gnulib: lib/regcomp.c annotate

annotate lib/regcomp.c @ 5968:541fed6ae301

* modules/regex (Files): Add lib/regex_internal.c, lib/regex_internal.h, lib/regexec.c, lib/regcomp.c, m4/codeset.m4. (Depends-on): Add extensions. (Makefile.am): Remove lib_SOURCES; now done by m4 code. * config/srclist.txt: Add regcomp.c, regex.c, regex.h, regex_internal.c, regexec.c. Add regex_internal.h too, but as a comment, since the libc version is currently broken in gnulib mode. * lib/regex.c, lib/regex.h: Sync from libc. * lib/regcomp.c, lib/regexec_internal.c, lib/regex_internal.h, lib/regexec.c: New files, synced from libc, except that regex_internal.h currently has a small porting fix. * m4/regex.m4: Adjust to new libc regex implementation. (gl_INCLUDED_REGEX): Add AC_LIBSOURCES for all the .c and .h parts of (the new) regex. Quote the m4 stuff better. Check for RE_ICASE bug of old gnulib. Check for REG_STARTEND of recent libc. Rename local variables from jm_* to gl_*. Quote operand of "test -f". Say "recent enough" version of libc, not "version 2". (gl_PREREQ_REGEX): Remove AC_FUNC_ALLOCA, since alloca is a prerequisite module. Remove AC_HEADER_STDC; no longer needed. Check for locale.h, isblank, mbrtowc, wcrtomb, wcscoll. Remove check for btowc, isascii. Require AM_LANGINFO_CODESET.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Thu, 07 Jul 2005 08:08:39 +0000
parents
children	aa260da0bbbe

rev	line source
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1 /* Extended regular expression matching and search library.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2 Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3 This file is part of the GNU C Library.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	5
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	6 This program is free software; you can redistribute it and/or modify
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	7 it under the terms of the GNU General Public License as published by
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	8 the Free Software Foundation; either version 2, or (at your option)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	9 any later version.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	10
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	11 This program is distributed in the hope that it will be useful,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	12 but WITHOUT ANY WARRANTY; without even the implied warranty of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	14 GNU General Public License for more details.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	15
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	16 You should have received a copy of the GNU General Public License along
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	17 with this program; if not, write to the Free Software Foundation,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	19
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	20 static reg_errcode_t re_compile_internal (regex_t preg, const char pattern,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	21 int length, reg_syntax_t syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	22 static void re_compile_fastmap_iter (regex_t *bufp,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	23 const re_dfastate_t *init_state,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	24 char *fastmap);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	25 static reg_errcode_t init_dfa (re_dfa_t *dfa, int pat_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	26 static void init_word_char (re_dfa_t *dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	27 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	28 static void free_charset (re_charset_t *cset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	29 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	30 static void free_workarea_compile (regex_t *preg);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	31 static reg_errcode_t create_initial_state (re_dfa_t *dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	32 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	33 static void optimize_utf8 (re_dfa_t *dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	34 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	35 static reg_errcode_t analyze (regex_t *preg);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	36 static reg_errcode_t create_initial_state (re_dfa_t *dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	37 static reg_errcode_t preorder (bin_tree_t *root,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	38 reg_errcode_t (fn (void , bin_tree_t )),
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	39 void *extra);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	40 static reg_errcode_t postorder (bin_tree_t *root,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	41 reg_errcode_t (fn (void , bin_tree_t )),
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	42 void *extra);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	43 static reg_errcode_t optimize_subexps (void extra, bin_tree_t node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	44 static reg_errcode_t lower_subexps (void extra, bin_tree_t node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	45 static bin_tree_t lower_subexp (reg_errcode_t err, regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	46 bin_tree_t *node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	47 static reg_errcode_t calc_first (void extra, bin_tree_t node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	48 static reg_errcode_t calc_next (void extra, bin_tree_t node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	49 static reg_errcode_t link_nfa_nodes (void extra, bin_tree_t node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	50 static reg_errcode_t duplicate_node_closure (re_dfa_t *dfa, int top_org_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	51 int top_clone_node, int root_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	52 unsigned int constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	53 static reg_errcode_t duplicate_node (int new_idx, re_dfa_t dfa, int org_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	54 unsigned int constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	55 static int search_duplicated_node (re_dfa_t *dfa, int org_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	56 unsigned int constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	57 static reg_errcode_t calc_eclosure (re_dfa_t *dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	58 static reg_errcode_t calc_eclosure_iter (re_node_set new_set, re_dfa_t dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	59 int node, int root);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	60 static reg_errcode_t calc_inveclosure (re_dfa_t *dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	61 static int fetch_number (re_string_t input, re_token_t token,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	62 reg_syntax_t syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	63 static void fetch_token (re_token_t result, re_string_t input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	64 reg_syntax_t syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	65 static int peek_token (re_token_t token, re_string_t input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	66 reg_syntax_t syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	67 static int peek_token_bracket (re_token_t token, re_string_t input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	68 reg_syntax_t syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	69 static bin_tree_t parse (re_string_t regexp, regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	70 reg_syntax_t syntax, reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	71 static bin_tree_t parse_reg_exp (re_string_t regexp, regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	72 re_token_t *token, reg_syntax_t syntax,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	73 int nest, reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	74 static bin_tree_t parse_branch (re_string_t regexp, regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	75 re_token_t *token, reg_syntax_t syntax,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	76 int nest, reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	77 static bin_tree_t parse_expression (re_string_t regexp, regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	78 re_token_t *token, reg_syntax_t syntax,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	79 int nest, reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	80 static bin_tree_t parse_sub_exp (re_string_t regexp, regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	81 re_token_t *token, reg_syntax_t syntax,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	82 int nest, reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	83 static bin_tree_t parse_dup_op (bin_tree_t dup_elem, re_string_t *regexp,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	84 re_dfa_t dfa, re_token_t token,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	85 reg_syntax_t syntax, reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	86 static bin_tree_t parse_bracket_exp (re_string_t regexp, re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	87 re_token_t *token, reg_syntax_t syntax,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	88 reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	89 static reg_errcode_t parse_bracket_element (bracket_elem_t *elem,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	90 re_string_t *regexp,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	91 re_token_t *token, int token_len,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	92 re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	93 reg_syntax_t syntax,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	94 int accept_hyphen);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	95 static reg_errcode_t parse_bracket_symbol (bracket_elem_t *elem,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	96 re_string_t *regexp,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	97 re_token_t *token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	98 #ifndef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	99 # ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	100 static reg_errcode_t build_range_exp (re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	101 re_charset_t mbcset, int range_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	102 bracket_elem_t *start_elem,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	103 bracket_elem_t *end_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	104 static reg_errcode_t build_collating_symbol (re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	105 re_charset_t *mbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	106 int *coll_sym_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	107 const unsigned char *name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	108 # else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	109 static reg_errcode_t build_range_exp (re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	110 bracket_elem_t *start_elem,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	111 bracket_elem_t *end_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	112 static reg_errcode_t build_collating_symbol (re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	113 const unsigned char *name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	114 # endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	115 #endif /* not _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	116 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	117 static reg_errcode_t build_equiv_class (re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	118 re_charset_t *mbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	119 int *equiv_class_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	120 const unsigned char *name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	121 static reg_errcode_t build_charclass (unsigned RE_TRANSLATE_TYPE trans,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	122 re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	123 re_charset_t *mbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	124 int *char_class_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	125 const unsigned char *class_name,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	126 reg_syntax_t syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	127 #else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	128 static reg_errcode_t build_equiv_class (re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	129 const unsigned char *name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	130 static reg_errcode_t build_charclass (unsigned RE_TRANSLATE_TYPE trans,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	131 re_bitset_ptr_t sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	132 const unsigned char *class_name,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	133 reg_syntax_t syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	134 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	135 static bin_tree_t build_charclass_op (re_dfa_t dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	136 unsigned RE_TRANSLATE_TYPE trans,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	137 const unsigned char *class_name,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	138 const unsigned char *extra,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	139 int non_match, reg_errcode_t *err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	140 static bin_tree_t create_tree (re_dfa_t dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	141 bin_tree_t left, bin_tree_t right,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	142 re_token_type_t type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	143 static bin_tree_t create_token_tree (re_dfa_t dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	144 bin_tree_t left, bin_tree_t right,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	145 const re_token_t *token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	146 static bin_tree_t duplicate_tree (const bin_tree_t src, re_dfa_t *dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	147 static void free_token (re_token_t *node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	148 static reg_errcode_t free_tree (void extra, bin_tree_t node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	149 static reg_errcode_t mark_opt_subexp (void extra, bin_tree_t node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	150
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	151 /* This table gives an error message for each of the error codes listed
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	152 in regex.h. Obviously the order here has to be same as there.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	153 POSIX doesn't require that we do anything for REG_NOERROR,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	154 but why not be nice? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	155
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	156 const char __re_error_msgid[] attribute_hidden =
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	157 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	158 #define REG_NOERROR_IDX 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	159 gettext_noop ("Success") /* REG_NOERROR */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	160 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	161 #define REG_NOMATCH_IDX (REG_NOERROR_IDX + sizeof "Success")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	162 gettext_noop ("No match") /* REG_NOMATCH */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	163 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	164 #define REG_BADPAT_IDX (REG_NOMATCH_IDX + sizeof "No match")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	165 gettext_noop ("Invalid regular expression") /* REG_BADPAT */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	166 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	167 #define REG_ECOLLATE_IDX (REG_BADPAT_IDX + sizeof "Invalid regular expression")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	168 gettext_noop ("Invalid collation character") /* REG_ECOLLATE */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	169 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	170 #define REG_ECTYPE_IDX (REG_ECOLLATE_IDX + sizeof "Invalid collation character")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	171 gettext_noop ("Invalid character class name") /* REG_ECTYPE */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	172 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	173 #define REG_EESCAPE_IDX (REG_ECTYPE_IDX + sizeof "Invalid character class name")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	174 gettext_noop ("Trailing backslash") /* REG_EESCAPE */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	175 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	176 #define REG_ESUBREG_IDX (REG_EESCAPE_IDX + sizeof "Trailing backslash")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	177 gettext_noop ("Invalid back reference") /* REG_ESUBREG */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	178 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	179 #define REG_EBRACK_IDX (REG_ESUBREG_IDX + sizeof "Invalid back reference")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	180 gettext_noop ("Unmatched [ or [^") /* REG_EBRACK */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	181 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	182 #define REG_EPAREN_IDX (REG_EBRACK_IDX + sizeof "Unmatched [ or [^")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	183 gettext_noop ("Unmatched ( or \\(") /* REG_EPAREN */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	184 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	185 #define REG_EBRACE_IDX (REG_EPAREN_IDX + sizeof "Unmatched ( or \\(")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	186 gettext_noop ("Unmatched \\{") /* REG_EBRACE */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	187 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	188 #define REG_BADBR_IDX (REG_EBRACE_IDX + sizeof "Unmatched \\{")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	189 gettext_noop ("Invalid content of \\{\\}") /* REG_BADBR */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	190 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	191 #define REG_ERANGE_IDX (REG_BADBR_IDX + sizeof "Invalid content of \\{\\}")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	192 gettext_noop ("Invalid range end") /* REG_ERANGE */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	193 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	194 #define REG_ESPACE_IDX (REG_ERANGE_IDX + sizeof "Invalid range end")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	195 gettext_noop ("Memory exhausted") /* REG_ESPACE */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	196 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	197 #define REG_BADRPT_IDX (REG_ESPACE_IDX + sizeof "Memory exhausted")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	198 gettext_noop ("Invalid preceding regular expression") /* REG_BADRPT */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	199 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	200 #define REG_EEND_IDX (REG_BADRPT_IDX + sizeof "Invalid preceding regular expression")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	201 gettext_noop ("Premature end of regular expression") /* REG_EEND */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	202 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	203 #define REG_ESIZE_IDX (REG_EEND_IDX + sizeof "Premature end of regular expression")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	204 gettext_noop ("Regular expression too big") /* REG_ESIZE */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	205 "\0"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	206 #define REG_ERPAREN_IDX (REG_ESIZE_IDX + sizeof "Regular expression too big")
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	207 gettext_noop ("Unmatched ) or \\)") /* REG_ERPAREN */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	208 };
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	209
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	210 const size_t __re_error_msgid_idx[] attribute_hidden =
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	211 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	212 REG_NOERROR_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	213 REG_NOMATCH_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	214 REG_BADPAT_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	215 REG_ECOLLATE_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	216 REG_ECTYPE_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	217 REG_EESCAPE_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	218 REG_ESUBREG_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	219 REG_EBRACK_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	220 REG_EPAREN_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	221 REG_EBRACE_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	222 REG_BADBR_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	223 REG_ERANGE_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	224 REG_ESPACE_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	225 REG_BADRPT_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	226 REG_EEND_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	227 REG_ESIZE_IDX,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	228 REG_ERPAREN_IDX
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	229 };
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	230
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	231 /* Entry points for GNU code. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	232
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	233 /* re_compile_pattern is the GNU regular expression compiler: it
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	234 compiles PATTERN (of length LENGTH) and puts the result in BUFP.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	235 Returns 0 if the pattern was valid, otherwise an error string.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	236
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	237 Assumes the `allocated' (and perhaps `buffer') and `translate' fields
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	238 are set in BUFP on entry. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	239
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	240 const char *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	241 re_compile_pattern (pattern, length, bufp)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	242 const char *pattern;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	243 size_t length;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	244 struct re_pattern_buffer *bufp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	245 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	246 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	247
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	248 /* And GNU code determines whether or not to get register information
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	249 by passing null for the REGS argument to re_match, etc., not by
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	250 setting no_sub, unless RE_NO_SUB is set. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	251 bufp->no_sub = !!(re_syntax_options & RE_NO_SUB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	252
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	253 /* Match anchors at newline. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	254 bufp->newline_anchor = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	255
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	256 ret = re_compile_internal (bufp, pattern, length, re_syntax_options);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	257
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	258 if (!ret)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	259 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	260 return gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	261 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	262 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	263 weak_alias (__re_compile_pattern, re_compile_pattern)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	264 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	265
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	266 /* Set by `re_set_syntax' to the current regexp syntax to recognize. Can
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	267 also be assigned to arbitrarily: each pattern buffer stores its own
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	268 syntax, so it can be changed between regex compilations. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	269 /* This has no initializer because initialized variables in Emacs
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	270 become read-only after dumping. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	271 reg_syntax_t re_syntax_options;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	272
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	273
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	274 /* Specify the precise syntax of regexps for compilation. This provides
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	275 for compatibility for various utilities which historically have
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	276 different, incompatible syntaxes.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	277
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	278 The argument SYNTAX is a bit mask comprised of the various bits
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	279 defined in regex.h. We return the old syntax. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	280
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	281 reg_syntax_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	282 re_set_syntax (syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	283 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	284 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	285 reg_syntax_t ret = re_syntax_options;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	286
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	287 re_syntax_options = syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	288 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	289 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	290 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	291 weak_alias (__re_set_syntax, re_set_syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	292 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	293
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	294 int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	295 re_compile_fastmap (bufp)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	296 struct re_pattern_buffer *bufp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	297 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	298 re_dfa_t dfa = (re_dfa_t ) bufp->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	299 char *fastmap = bufp->fastmap;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	300
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	301 memset (fastmap, '\0', sizeof (char) * SBC_MAX);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	302 re_compile_fastmap_iter (bufp, dfa->init_state, fastmap);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	303 if (dfa->init_state != dfa->init_state_word)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	304 re_compile_fastmap_iter (bufp, dfa->init_state_word, fastmap);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	305 if (dfa->init_state != dfa->init_state_nl)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	306 re_compile_fastmap_iter (bufp, dfa->init_state_nl, fastmap);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	307 if (dfa->init_state != dfa->init_state_begbuf)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	308 re_compile_fastmap_iter (bufp, dfa->init_state_begbuf, fastmap);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	309 bufp->fastmap_accurate = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	310 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	311 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	312 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	313 weak_alias (__re_compile_fastmap, re_compile_fastmap)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	314 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	315
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	316 static inline void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	317 __attribute ((always_inline))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	318 re_set_fastmap (char *fastmap, int icase, int ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	319 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	320 fastmap[ch] = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	321 if (icase)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	322 fastmap[tolower (ch)] = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	323 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	324
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	325 /* Helper function for re_compile_fastmap.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	326 Compile fastmap for the initial_state INIT_STATE. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	327
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	328 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	329 re_compile_fastmap_iter (bufp, init_state, fastmap)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	330 regex_t *bufp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	331 const re_dfastate_t *init_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	332 char *fastmap;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	333 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	334 re_dfa_t dfa = (re_dfa_t ) bufp->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	335 int node_cnt;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	336 int icase = (dfa->mb_cur_max == 1 && (bufp->syntax & RE_ICASE));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	337 for (node_cnt = 0; node_cnt < init_state->nodes.nelem; ++node_cnt)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	338 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	339 int node = init_state->nodes.elems[node_cnt];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	340 re_token_type_t type = dfa->nodes[node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	341
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	342 if (type == CHARACTER)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	343 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	344 re_set_fastmap (fastmap, icase, dfa->nodes[node].opr.c);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	345 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	346 if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	347 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	348 unsigned char buf = alloca (dfa->mb_cur_max), p;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	349 wchar_t wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	350 mbstate_t state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	351
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	352 p = buf;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	353 *p++ = dfa->nodes[node].opr.c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	354 while (++node < dfa->nodes_len
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	355 && dfa->nodes[node].type == CHARACTER
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	356 && dfa->nodes[node].mb_partial)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	357 *p++ = dfa->nodes[node].opr.c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	358 memset (&state, 0, sizeof (state));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	359 if (mbrtowc (&wc, (const char *) buf, p - buf,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	360 &state) == p - buf
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	361 && (__wcrtomb ((char *) buf, towlower (wc), &state)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	362 != (size_t) -1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	363 re_set_fastmap (fastmap, 0, buf[0]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	364 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	365 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	366 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	367 else if (type == SIMPLE_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	368 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	369 int i, j, ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	370 for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	371 for (j = 0; j < UINT_BITS; ++j, ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	372 if (dfa->nodes[node].opr.sbcset[i] & (1 << j))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	373 re_set_fastmap (fastmap, icase, ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	374 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	375 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	376 else if (type == COMPLEX_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	377 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	378 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	379 re_charset_t *cset = dfa->nodes[node].opr.mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	380 if (cset->non_match \|\| cset->ncoll_syms \|\| cset->nequiv_classes
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	381 \|\| cset->nranges \|\| cset->nchar_classes)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	382 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	383 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	384 if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	385 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	386 /* In this case we want to catch the bytes which are
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	387 the first byte of any collation elements.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	388 e.g. In da_DK, we want to catch 'a' since "aa"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	389 is a valid collation element, and don't catch
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	390 'b' since 'b' is the only collation element
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	391 which starts from 'b'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	392 int j, ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	393 const int32_t table = (const int32_t )
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	394 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	395 for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	396 for (j = 0; j < UINT_BITS; ++j, ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	397 if (table[ch] < 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	398 re_set_fastmap (fastmap, icase, ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	399 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	400 # else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	401 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	402 for (i = 0; i < SBC_MAX; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	403 if (__btowc (i) == WEOF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	404 re_set_fastmap (fastmap, icase, i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	405 # endif /* not _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	406 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	407 for (i = 0; i < cset->nmbchars; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	408 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	409 char buf[256];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	410 mbstate_t state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	411 memset (&state, '\0', sizeof (state));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	412 if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	413 re_set_fastmap (fastmap, icase, (unsigned char ) buf);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	414 if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	415 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	416 if (__wcrtomb (buf, towlower (cset->mbchars[i]), &state)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	417 != (size_t) -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	418 re_set_fastmap (fastmap, 0, (unsigned char ) buf);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	419 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	420 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	421 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	422 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	423 else if (type == OP_PERIOD
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	424 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	425 \|\| type == OP_UTF8_PERIOD
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	426 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	427 \|\| type == END_OF_RE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	428 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	429 memset (fastmap, '\1', sizeof (char) * SBC_MAX);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	430 if (type == END_OF_RE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	431 bufp->can_be_null = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	432 return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	433 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	434 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	435 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	436
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	437 /* Entry point for POSIX code. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	438 /* regcomp takes a regular expression as a string and compiles it.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	439
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	440 PREG is a regex_t *. We do not expect any fields to be initialized,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	441 since POSIX says we shouldn't. Thus, we set
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	442
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	443 `buffer' to the compiled pattern;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	444 `used' to the length of the compiled pattern;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	445 `syntax' to RE_SYNTAX_POSIX_EXTENDED if the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	446 REG_EXTENDED bit in CFLAGS is set; otherwise, to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	447 RE_SYNTAX_POSIX_BASIC;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	448 `newline_anchor' to REG_NEWLINE being set in CFLAGS;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	449 `fastmap' to an allocated space for the fastmap;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	450 `fastmap_accurate' to zero;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	451 `re_nsub' to the number of subexpressions in PATTERN.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	452
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	453 PATTERN is the address of the pattern string.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	454
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	455 CFLAGS is a series of bits which affect compilation.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	456
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	457 If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	458 use POSIX basic syntax.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	459
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	460 If REG_NEWLINE is set, then . and [^...] don't match newline.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	461 Also, regexec will try a match beginning after every newline.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	462
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	463 If REG_ICASE is set, then we considers upper- and lowercase
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	464 versions of letters to be equivalent when matching.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	465
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	466 If REG_NOSUB is set, then when PREG is passed to regexec, that
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	467 routine will report only success or failure, and nothing about the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	468 registers.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	469
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	470 It returns 0 if it succeeds, nonzero if it doesn't. (See regex.h for
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	471 the return codes and their meanings.) */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	472
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	473 int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	474 regcomp (preg, pattern, cflags)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	475 regex_t *__restrict preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	476 const char *__restrict pattern;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	477 int cflags;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	478 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	479 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	480 reg_syntax_t syntax = ((cflags & REG_EXTENDED) ? RE_SYNTAX_POSIX_EXTENDED
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	481 : RE_SYNTAX_POSIX_BASIC);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	482
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	483 preg->buffer = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	484 preg->allocated = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	485 preg->used = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	486
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	487 /* Try to allocate space for the fastmap. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	488 preg->fastmap = re_malloc (char, SBC_MAX);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	489 if (BE (preg->fastmap == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	490 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	491
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	492 syntax \|= (cflags & REG_ICASE) ? RE_ICASE : 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	493
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	494 /* If REG_NEWLINE is set, newlines are treated differently. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	495 if (cflags & REG_NEWLINE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	496 { /* REG_NEWLINE implies neither . nor [^...] match newline. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	497 syntax &= ~RE_DOT_NEWLINE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	498 syntax \|= RE_HAT_LISTS_NOT_NEWLINE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	499 /* It also changes the matching behavior. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	500 preg->newline_anchor = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	501 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	502 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	503 preg->newline_anchor = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	504 preg->no_sub = !!(cflags & REG_NOSUB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	505 preg->translate = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	506
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	507 ret = re_compile_internal (preg, pattern, strlen (pattern), syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	508
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	509 /* POSIX doesn't distinguish between an unmatched open-group and an
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	510 unmatched close-group: both are REG_EPAREN. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	511 if (ret == REG_ERPAREN)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	512 ret = REG_EPAREN;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	513
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	514 /* We have already checked preg->fastmap != NULL. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	515 if (BE (ret == REG_NOERROR, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	516 /* Compute the fastmap now, since regexec cannot modify the pattern
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	517 buffer. This function never fails in this implementation. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	518 (void) re_compile_fastmap (preg);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	519 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	520 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	521 /* Some error occurred while compiling the expression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	522 re_free (preg->fastmap);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	523 preg->fastmap = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	524 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	525
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	526 return (int) ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	527 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	528 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	529 weak_alias (__regcomp, regcomp)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	530 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	531
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	532 /* Returns a message corresponding to an error code, ERRCODE, returned
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	533 from either regcomp or regexec. We don't use PREG here. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	534
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	535 size_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	536 regerror (errcode, preg, errbuf, errbuf_size)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	537 int errcode;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	538 const regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	539 char *errbuf;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	540 size_t errbuf_size;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	541 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	542 const char *msg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	543 size_t msg_size;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	544
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	545 if (BE (errcode < 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	546 \|\| errcode >= (int) (sizeof (__re_error_msgid_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	547 / sizeof (__re_error_msgid_idx[0])), 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	548 /* Only error codes returned by the rest of the code should be passed
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	549 to this routine. If we are given anything else, or if other regex
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	550 code generates an invalid error code, then the program has a bug.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	551 Dump core so we can fix it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	552 abort ();
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	553
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	554 msg = gettext (__re_error_msgid + __re_error_msgid_idx[errcode]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	555
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	556 msg_size = strlen (msg) + 1; /* Includes the null. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	557
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	558 if (BE (errbuf_size != 0, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	559 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	560 if (BE (msg_size > errbuf_size, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	561 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	562 #if defined HAVE_MEMPCPY \|\| defined _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	563 ((char ) __mempcpy (errbuf, msg, errbuf_size - 1)) = '\0';
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	564 #else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	565 memcpy (errbuf, msg, errbuf_size - 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	566 errbuf[errbuf_size - 1] = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	567 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	568 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	569 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	570 memcpy (errbuf, msg, msg_size);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	571 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	572
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	573 return msg_size;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	574 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	575 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	576 weak_alias (__regerror, regerror)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	577 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	578
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	579
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	580 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	581 /* This static array is used for the map to single-byte characters when
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	582 UTF-8 is used. Otherwise we would allocate memory just to initialize
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	583 it the same all the time. UTF-8 is the preferred encoding so this is
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	584 a worthwhile optimization. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	585 static const bitset utf8_sb_map =
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	586 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	587 /* Set the first 128 bits. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	588 # if UINT_MAX == 0xffffffff
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	589 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	590 # else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	591 # error "Add case for new unsigned int size"
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	592 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	593 };
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	594 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	595
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	596
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	597 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	598 free_dfa_content (re_dfa_t *dfa)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	599 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	600 int i, j;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	601
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	602 if (dfa->nodes)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	603 for (i = 0; i < dfa->nodes_len; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	604 free_token (dfa->nodes + i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	605 re_free (dfa->nexts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	606 for (i = 0; i < dfa->nodes_len; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	607 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	608 if (dfa->eclosures != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	609 re_node_set_free (dfa->eclosures + i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	610 if (dfa->inveclosures != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	611 re_node_set_free (dfa->inveclosures + i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	612 if (dfa->edests != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	613 re_node_set_free (dfa->edests + i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	614 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	615 re_free (dfa->edests);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	616 re_free (dfa->eclosures);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	617 re_free (dfa->inveclosures);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	618 re_free (dfa->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	619
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	620 if (dfa->state_table)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	621 for (i = 0; i <= dfa->state_hash_mask; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	622 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	623 struct re_state_table_entry *entry = dfa->state_table + i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	624 for (j = 0; j < entry->num; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	625 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	626 re_dfastate_t *state = entry->array[j];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	627 free_state (state);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	628 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	629 re_free (entry->array);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	630 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	631 re_free (dfa->state_table);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	632 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	633 if (dfa->sb_char != utf8_sb_map)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	634 re_free (dfa->sb_char);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	635 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	636 re_free (dfa->subexp_map);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	637 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	638 re_free (dfa->re_str);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	639 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	640
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	641 re_free (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	642 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	643
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	644
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	645 /* Free dynamically allocated space used by PREG. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	646
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	647 void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	648 regfree (preg)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	649 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	650 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	651 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	652 if (BE (dfa != NULL, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	653 free_dfa_content (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	654 preg->buffer = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	655 preg->allocated = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	656
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	657 re_free (preg->fastmap);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	658 preg->fastmap = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	659
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	660 re_free (preg->translate);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	661 preg->translate = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	662 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	663 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	664 weak_alias (__regfree, regfree)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	665 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	666
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	667 /* Entry points compatible with 4.2 BSD regex library. We don't define
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	668 them unless specifically requested. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	669
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	670 #if defined _REGEX_RE_COMP \|\| defined _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	671
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	672 /* BSD has one and only one pattern buffer. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	673 static struct re_pattern_buffer re_comp_buf;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	674
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	675 char *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	676 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	677 /* Make these definitions weak in libc, so POSIX programs can redefine
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	678 these names if they don't use our functions, and still use
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	679 regcomp/regexec above without link errors. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	680 weak_function
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	681 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	682 re_comp (s)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	683 const char *s;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	684 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	685 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	686 char *fastmap;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	687
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	688 if (!s)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	689 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	690 if (!re_comp_buf.buffer)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	691 return gettext ("No previous regular expression");
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	692 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	693 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	694
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	695 if (re_comp_buf.buffer)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	696 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	697 fastmap = re_comp_buf.fastmap;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	698 re_comp_buf.fastmap = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	699 __regfree (&re_comp_buf);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	700 memset (&re_comp_buf, '\0', sizeof (re_comp_buf));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	701 re_comp_buf.fastmap = fastmap;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	702 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	703
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	704 if (re_comp_buf.fastmap == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	705 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	706 re_comp_buf.fastmap = (char *) malloc (SBC_MAX);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	707 if (re_comp_buf.fastmap == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	708 return (char *) gettext (__re_error_msgid
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	709 + __re_error_msgid_idx[(int) REG_ESPACE]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	710 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	711
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	712 /* Since `re_exec' always passes NULL for the `regs' argument, we
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	713 don't need to initialize the pattern buffer fields which affect it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	714
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	715 /* Match anchors at newlines. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	716 re_comp_buf.newline_anchor = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	717
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	718 ret = re_compile_internal (&re_comp_buf, s, strlen (s), re_syntax_options);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	719
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	720 if (!ret)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	721 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	722
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	723 /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	724 return (char *) gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	725 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	726
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	727 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	728 libc_freeres_fn (free_mem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	729 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	730 __regfree (&re_comp_buf);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	731 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	732 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	733
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	734 #endif /* _REGEX_RE_COMP */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	735
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	736 /* Internal entry point.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	737 Compile the regular expression PATTERN, whose length is LENGTH.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	738 SYNTAX indicate regular expression's syntax. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	739
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	740 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	741 re_compile_internal (preg, pattern, length, syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	742 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	743 const char * pattern;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	744 int length;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	745 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	746 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	747 reg_errcode_t err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	748 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	749 re_string_t regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	750
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	751 /* Initialize the pattern buffer. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	752 preg->fastmap_accurate = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	753 preg->syntax = syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	754 preg->not_bol = preg->not_eol = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	755 preg->used = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	756 preg->re_nsub = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	757 preg->can_be_null = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	758 preg->regs_allocated = REGS_UNALLOCATED;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	759
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	760 /* Initialize the dfa. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	761 dfa = (re_dfa_t *) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	762 if (BE (preg->allocated < sizeof (re_dfa_t), 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	763 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	764 /* If zero allocated, but buffer is non-null, try to realloc
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	765 enough space. This loses if buffer's address is bogus, but
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	766 that is the user's responsibility. If ->buffer is NULL this
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	767 is a simple allocation. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	768 dfa = re_realloc (preg->buffer, re_dfa_t, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	769 if (dfa == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	770 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	771 preg->allocated = sizeof (re_dfa_t);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	772 preg->buffer = (unsigned char *) dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	773 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	774 preg->used = sizeof (re_dfa_t);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	775
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	776 __libc_lock_init (dfa->lock);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	777
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	778 err = init_dfa (dfa, length);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	779 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	780 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	781 free_dfa_content (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	782 preg->buffer = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	783 preg->allocated = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	784 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	785 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	786 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	787 dfa->re_str = re_malloc (char, length + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	788 strncpy (dfa->re_str, pattern, length + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	789 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	790
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	791 err = re_string_construct (&regexp, pattern, length, preg->translate,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	792 syntax & RE_ICASE, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	793 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	794 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	795 re_compile_internal_free_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	796 free_workarea_compile (preg);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	797 re_string_destruct (&regexp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	798 free_dfa_content (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	799 preg->buffer = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	800 preg->allocated = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	801 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	802 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	803
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	804 /* Parse the regular expression, and build a structure tree. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	805 preg->re_nsub = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	806 dfa->str_tree = parse (&regexp, preg, syntax, &err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	807 if (BE (dfa->str_tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	808 goto re_compile_internal_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	809
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	810 /* Analyze the tree and create the nfa. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	811 err = analyze (preg);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	812 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	813 goto re_compile_internal_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	814
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	815 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	816 /* If possible, do searching in single byte encoding to speed things up. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	817 if (dfa->is_utf8 && !(syntax & RE_ICASE) && preg->translate == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	818 optimize_utf8 (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	819 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	820
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	821 /* Then create the initial state of the dfa. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	822 err = create_initial_state (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	823
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	824 /* Release work areas. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	825 free_workarea_compile (preg);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	826 re_string_destruct (&regexp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	827
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	828 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	829 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	830 free_dfa_content (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	831 preg->buffer = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	832 preg->allocated = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	833 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	834
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	835 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	836 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	837
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	838 /* Initialize DFA. We use the length of the regular expression PAT_LEN
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	839 as the initial length of some arrays. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	840
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	841 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	842 init_dfa (dfa, pat_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	843 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	844 int pat_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	845 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	846 int table_size;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	847 #ifndef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	848 char *codeset_name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	849 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	850
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	851 memset (dfa, '\0', sizeof (re_dfa_t));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	852
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	853 /* Force allocation of str_tree_storage the first time. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	854 dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	855
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	856 dfa->nodes_alloc = pat_len + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	857 dfa->nodes = re_malloc (re_token_t, dfa->nodes_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	858
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	859 dfa->states_alloc = pat_len + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	860
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	861 /* table_size = 2 ^ ceil(log pat_len) */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	862 for (table_size = 1; table_size > 0; table_size <<= 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	863 if (table_size > pat_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	864 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	865
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	866 dfa->state_table = calloc (sizeof (struct re_state_table_entry), table_size);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	867 dfa->state_hash_mask = table_size - 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	868
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	869 dfa->mb_cur_max = MB_CUR_MAX;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	870 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	871 if (dfa->mb_cur_max == 6
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	872 && strcmp (_NL_CURRENT (LC_CTYPE, _NL_CTYPE_CODESET_NAME), "UTF-8") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	873 dfa->is_utf8 = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	874 dfa->map_notascii = (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_TO_NONASCII)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	875 != 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	876 #else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	877 # ifdef HAVE_LANGINFO_CODESET
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	878 codeset_name = nl_langinfo (CODESET);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	879 # else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	880 codeset_name = getenv ("LC_ALL");
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	881 if (codeset_name == NULL \|\| codeset_name[0] == '\0')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	882 codeset_name = getenv ("LC_CTYPE");
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	883 if (codeset_name == NULL \|\| codeset_name[0] == '\0')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	884 codeset_name = getenv ("LANG");
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	885 if (codeset_name == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	886 codeset_name = "";
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	887 else if (strchr (codeset_name, '.') != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	888 codeset_name = strchr (codeset_name, '.') + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	889 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	890
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	891 if (strcasecmp (codeset_name, "UTF-8") == 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	892 \|\| strcasecmp (codeset_name, "UTF8") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	893 dfa->is_utf8 = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	894
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	895 /* We check exhaustively in the loop below if this charset is a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	896 superset of ASCII. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	897 dfa->map_notascii = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	898 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	899
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	900 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	901 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	902 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	903 if (dfa->is_utf8)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	904 dfa->sb_char = (re_bitset_ptr_t) utf8_sb_map;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	905 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	906 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	907 int i, j, ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	908
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	909 dfa->sb_char = (re_bitset_ptr_t) calloc (sizeof (bitset), 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	910 if (BE (dfa->sb_char == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	911 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	912
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	913 /* Clear all bits by, then set those corresponding to single
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	914 byte chars. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	915 bitset_empty (dfa->sb_char);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	916
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	917 for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	918 for (j = 0; j < UINT_BITS; ++j, ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	919 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	920 wchar_t wch = __btowc (ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	921 if (wch != WEOF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	922 dfa->sb_char[i] \|= 1 << j;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	923 # ifndef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	924 if (isascii (ch) && wch != (wchar_t) ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	925 dfa->map_notascii = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	926 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	927 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	928 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	929 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	930 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	931
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	932 if (BE (dfa->nodes == NULL \|\| dfa->state_table == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	933 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	934 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	935 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	936
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	937 /* Initialize WORD_CHAR table, which indicate which character is
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	938 "word". In this case "word" means that it is the word construction
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	939 character used by some operators like "\<", "\>", etc. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	940
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	941 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	942 init_word_char (dfa)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	943 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	944 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	945 int i, j, ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	946 dfa->word_ops_used = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	947 for (i = 0, ch = 0; i < BITSET_UINTS; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	948 for (j = 0; j < UINT_BITS; ++j, ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	949 if (isalnum (ch) \|\| ch == '_')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	950 dfa->word_char[i] \|= 1 << j;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	951 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	952
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	953 /* Free the work area which are only used while compiling. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	954
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	955 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	956 free_workarea_compile (preg)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	957 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	958 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	959 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	960 bin_tree_storage_t storage, next;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	961 for (storage = dfa->str_tree_storage; storage; storage = next)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	962 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	963 next = storage->next;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	964 re_free (storage);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	965 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	966 dfa->str_tree_storage = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	967 dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	968 dfa->str_tree = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	969 re_free (dfa->org_indices);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	970 dfa->org_indices = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	971 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	972
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	973 /* Create initial states for all contexts. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	974
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	975 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	976 create_initial_state (dfa)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	977 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	978 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	979 int first, i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	980 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	981 re_node_set init_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	982
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	983 /* Initial states have the epsilon closure of the node which is
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	984 the first node of the regular expression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	985 first = dfa->str_tree->first->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	986 dfa->init_node = first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	987 err = re_node_set_init_copy (&init_nodes, dfa->eclosures + first);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	988 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	989 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	990
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	991 /* The back-references which are in initial states can epsilon transit,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	992 since in this case all of the subexpressions can be null.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	993 Then we add epsilon closures of the nodes which are the next nodes of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	994 the back-references. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	995 if (dfa->nbackref > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	996 for (i = 0; i < init_nodes.nelem; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	997 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	998 int node_idx = init_nodes.elems[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	999 re_token_type_t type = dfa->nodes[node_idx].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1000
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1001 int clexp_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1002 if (type != OP_BACK_REF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1003 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1004 for (clexp_idx = 0; clexp_idx < init_nodes.nelem; ++clexp_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1005 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1006 re_token_t *clexp_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1007 clexp_node = dfa->nodes + init_nodes.elems[clexp_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1008 if (clexp_node->type == OP_CLOSE_SUBEXP
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1009 && clexp_node->opr.idx == dfa->nodes[node_idx].opr.idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1010 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1011 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1012 if (clexp_idx == init_nodes.nelem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1013 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1014
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1015 if (type == OP_BACK_REF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1016 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1017 int dest_idx = dfa->edests[node_idx].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1018 if (!re_node_set_contains (&init_nodes, dest_idx))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1019 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1020 re_node_set_merge (&init_nodes, dfa->eclosures + dest_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1021 i = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1022 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1023 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1024 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1025
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1026 /* It must be the first time to invoke acquire_state. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1027 dfa->init_state = re_acquire_state_context (&err, dfa, &init_nodes, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1028 /* We don't check ERR here, since the initial state must not be NULL. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1029 if (BE (dfa->init_state == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1030 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1031 if (dfa->init_state->has_constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1032 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1033 dfa->init_state_word = re_acquire_state_context (&err, dfa, &init_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1034 CONTEXT_WORD);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1035 dfa->init_state_nl = re_acquire_state_context (&err, dfa, &init_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1036 CONTEXT_NEWLINE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1037 dfa->init_state_begbuf = re_acquire_state_context (&err, dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1038 &init_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1039 CONTEXT_NEWLINE
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1040 \| CONTEXT_BEGBUF);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1041 if (BE (dfa->init_state_word == NULL \|\| dfa->init_state_nl == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1042 \|\| dfa->init_state_begbuf == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1043 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1044 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1045 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1046 dfa->init_state_word = dfa->init_state_nl
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1047 = dfa->init_state_begbuf = dfa->init_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1048
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1049 re_node_set_free (&init_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1050 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1051 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1052
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1053 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1054 /* If it is possible to do searching in single byte encoding instead of UTF-8
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1055 to speed things up, set dfa->mb_cur_max to 1, clear is_utf8 and change
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1056 DFA nodes where needed. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1057
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1058 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1059 optimize_utf8 (dfa)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1060 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1061 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1062 int node, i, mb_chars = 0, has_period = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1063
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1064 for (node = 0; node < dfa->nodes_len; ++node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1065 switch (dfa->nodes[node].type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1066 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1067 case CHARACTER:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1068 if (dfa->nodes[node].opr.c >= 0x80)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1069 mb_chars = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1070 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1071 case ANCHOR:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1072 switch (dfa->nodes[node].opr.idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1073 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1074 case LINE_FIRST:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1075 case LINE_LAST:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1076 case BUF_FIRST:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1077 case BUF_LAST:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1078 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1079 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1080 /* Word anchors etc. cannot be handled. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1081 return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1082 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1083 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1084 case OP_PERIOD:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1085 has_period = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1086 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1087 case OP_BACK_REF:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1088 case OP_ALT:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1089 case END_OF_RE:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1090 case OP_DUP_ASTERISK:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1091 case OP_OPEN_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1092 case OP_CLOSE_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1093 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1094 case COMPLEX_BRACKET:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1095 return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1096 case SIMPLE_BRACKET:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1097 /* Just double check. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1098 for (i = 0x80 / UINT_BITS; i < BITSET_UINTS; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1099 if (dfa->nodes[node].opr.sbcset[i])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1100 return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1101 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1102 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1103 abort ();
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1104 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1105
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1106 if (mb_chars \|\| has_period)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1107 for (node = 0; node < dfa->nodes_len; ++node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1108 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1109 if (dfa->nodes[node].type == CHARACTER
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1110 && dfa->nodes[node].opr.c >= 0x80)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1111 dfa->nodes[node].mb_partial = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1112 else if (dfa->nodes[node].type == OP_PERIOD)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1113 dfa->nodes[node].type = OP_UTF8_PERIOD;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1114 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1115
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1116 /* The search can be in single byte locale. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1117 dfa->mb_cur_max = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1118 dfa->is_utf8 = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1119 dfa->has_mb_node = dfa->nbackref > 0 \|\| has_period;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1120 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1121 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1122
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1123 /* Analyze the structure tree, and calculate "first", "next", "edest",
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1124 "eclosure", and "inveclosure". */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1125
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1126 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1127 analyze (preg)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1128 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1129 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1130 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1131 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1132
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1133 /* Allocate arrays. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1134 dfa->nexts = re_malloc (int, dfa->nodes_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1135 dfa->org_indices = re_malloc (int, dfa->nodes_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1136 dfa->edests = re_malloc (re_node_set, dfa->nodes_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1137 dfa->eclosures = re_malloc (re_node_set, dfa->nodes_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1138 if (BE (dfa->nexts == NULL \|\| dfa->org_indices == NULL \|\| dfa->edests == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1139 \|\| dfa->eclosures == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1140 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1141
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1142 dfa->subexp_map = re_malloc (int, preg->re_nsub);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1143 if (dfa->subexp_map != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1144 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1145 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1146 for (i = 0; i < preg->re_nsub; i++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1147 dfa->subexp_map[i] = i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1148 preorder (dfa->str_tree, optimize_subexps, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1149 for (i = 0; i < preg->re_nsub; i++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1150 if (dfa->subexp_map[i] != i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1151 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1152 if (i == preg->re_nsub)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1153 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1154 free (dfa->subexp_map);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1155 dfa->subexp_map = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1156 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1157 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1158
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1159 ret = postorder (dfa->str_tree, lower_subexps, preg);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1160 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1161 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1162 ret = postorder (dfa->str_tree, calc_first, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1163 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1164 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1165 preorder (dfa->str_tree, calc_next, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1166 ret = preorder (dfa->str_tree, link_nfa_nodes, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1167 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1168 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1169 ret = calc_eclosure (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1170 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1171 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1172
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1173 /* We only need this during the prune_impossible_nodes pass in regexec.c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1174 skip it if p_i_n will not run, as calc_inveclosure can be quadratic. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1175 if ((!preg->no_sub && preg->re_nsub > 0 && dfa->has_plural_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1176 \|\| dfa->nbackref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1177 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1178 dfa->inveclosures = re_malloc (re_node_set, dfa->nodes_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1179 if (BE (dfa->inveclosures == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1180 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1181 ret = calc_inveclosure (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1182 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1183
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1184 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1185 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1186
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1187 /* Our parse trees are very unbalanced, so we cannot use a stack to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1188 implement parse tree visits. Instead, we use parent pointers and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1189 some hairy code in these two functions. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1190 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1191 postorder (root, fn, extra)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1192 bin_tree_t *root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1193 reg_errcode_t (fn (void , bin_tree_t ));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1194 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1195 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1196 bin_tree_t node, prev;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1197
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1198 for (node = root; ; )
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1199 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1200 /* Descend down the tree, preferably to the left (or to the right
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1201 if that's the only child). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1202 while (node->left \|\| node->right)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1203 if (node->left)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1204 node = node->left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1205 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1206 node = node->right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1207
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1208 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1209 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1210 reg_errcode_t err = fn (extra, node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1211 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1212 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1213 if (node->parent == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1214 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1215 prev = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1216 node = node->parent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1217 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1218 /* Go up while we have a node that is reached from the right. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1219 while (node->right == prev \|\| node->right == NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1220 node = node->right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1221 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1222 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1223
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1224 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1225 preorder (root, fn, extra)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1226 bin_tree_t *root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1227 reg_errcode_t (fn (void , bin_tree_t ));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1228 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1229 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1230 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1231
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1232 for (node = root; ; )
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1233 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1234 reg_errcode_t err = fn (extra, node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1235 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1236 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1237
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1238 /* Go to the left node, or up and to the right. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1239 if (node->left)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1240 node = node->left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1241 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1242 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1243 bin_tree_t *prev = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1244 while (node->right == prev \|\| node->right == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1245 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1246 prev = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1247 node = node->parent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1248 if (!node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1249 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1250 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1251 node = node->right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1252 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1253 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1254 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1255
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1256 /* Optimization pass: if a SUBEXP is entirely contained, strip it and tell
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1257 re_search_internal to map the inner one's opr.idx to this one's. Adjust
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1258 backreferences as well. Requires a preorder visit. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1259 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1260 optimize_subexps (extra, node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1261 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1262 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1263 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1264 re_dfa_t dfa = (re_dfa_t ) extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1265
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1266 if (node->token.type == OP_BACK_REF && dfa->subexp_map)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1267 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1268 int idx = node->token.opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1269 node->token.opr.idx = dfa->subexp_map[idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1270 dfa->used_bkref_map \|= 1 << node->token.opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1271 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1272
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1273 else if (node->token.type == SUBEXP
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1274 && node->left && node->left->token.type == SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1275 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1276 int other_idx = node->left->token.opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1277
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1278 node->left = node->left->left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1279 if (node->left)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1280 node->left->parent = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1281
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1282 dfa->subexp_map[other_idx] = dfa->subexp_map[node->token.opr.idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1283 if (other_idx < 8 * sizeof (dfa->used_bkref_map))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1284 dfa->used_bkref_map &= ~(1 << other_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1285 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1286
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1287 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1288 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1289
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1290 /* Lowering pass: Turn each SUBEXP node into the appropriate concatenation
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1291 of OP_OPEN_SUBEXP, the body of the SUBEXP (if any) and OP_CLOSE_SUBEXP. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1292 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1293 lower_subexps (extra, node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1294 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1295 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1296 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1297 regex_t preg = (regex_t ) extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1298 reg_errcode_t err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1299
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1300 if (node->left && node->left->token.type == SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1301 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1302 node->left = lower_subexp (&err, preg, node->left);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1303 if (node->left)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1304 node->left->parent = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1305 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1306 if (node->right && node->right->token.type == SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1307 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1308 node->right = lower_subexp (&err, preg, node->right);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1309 if (node->right)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1310 node->right->parent = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1311 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1312
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1313 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1314 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1315
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1316 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1317 lower_subexp (err, preg, node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1318 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1319 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1320 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1321 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1322 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1323 bin_tree_t *body = node->left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1324 bin_tree_t op, cls, tree1, tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1325
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1326 if (preg->no_sub
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1327 /* We do not optimize empty subexpressions, because otherwise we may
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1328 have bad CONCAT nodes with NULL children. This is obviously not
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1329 very common, so we do not lose much. An example that triggers
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1330 this case is the sed "script" //x. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1331 && node->left != NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1332 && (node->token.opr.idx >= 8 * sizeof (dfa->used_bkref_map)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1333 \|\| !(dfa->used_bkref_map & (1 << node->token.opr.idx))))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1334 return node->left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1335
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1336 /* Convert the SUBEXP node to the concatenation of an
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1337 OP_OPEN_SUBEXP, the contents, and an OP_CLOSE_SUBEXP. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1338 op = create_tree (dfa, NULL, NULL, OP_OPEN_SUBEXP);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1339 cls = create_tree (dfa, NULL, NULL, OP_CLOSE_SUBEXP);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1340 tree1 = body ? create_tree (dfa, body, cls, CONCAT) : cls;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1341 tree = create_tree (dfa, op, tree1, CONCAT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1342 if (BE (tree == NULL \|\| tree1 == NULL \|\| op == NULL \|\| cls == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1343 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1344 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1345 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1346 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1347
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1348 op->token.opr.idx = cls->token.opr.idx = node->token.opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1349 op->token.opt_subexp = cls->token.opt_subexp = node->token.opt_subexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1350 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1351 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1352
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1353 /* Pass 1 in building the NFA: compute FIRST and create unlinked automaton
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1354 nodes. Requires a postorder visit. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1355 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1356 calc_first (extra, node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1357 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1358 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1359 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1360 re_dfa_t dfa = (re_dfa_t ) extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1361 if (node->token.type == CONCAT)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1362 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1363 node->first = node->left->first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1364 node->node_idx = node->left->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1365 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1366 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1367 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1368 node->first = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1369 node->node_idx = re_dfa_add_node (dfa, node->token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1370 if (BE (node->node_idx == -1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1371 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1372 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1373 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1374 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1375
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1376 /* Pass 2: compute NEXT on the tree. Preorder visit. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1377 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1378 calc_next (extra, node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1379 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1380 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1381 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1382 switch (node->token.type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1383 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1384 case OP_DUP_ASTERISK:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1385 node->left->next = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1386 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1387 case CONCAT:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1388 node->left->next = node->right->first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1389 node->right->next = node->next;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1390 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1391 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1392 if (node->left)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1393 node->left->next = node->next;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1394 if (node->right)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1395 node->right->next = node->next;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1396 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1397 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1398 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1399 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1400
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1401 /* Pass 3: link all DFA nodes to their NEXT node (any order will do). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1402 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1403 link_nfa_nodes (extra, node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1404 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1405 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1406 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1407 re_dfa_t dfa = (re_dfa_t ) extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1408 int idx = node->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1409 reg_errcode_t err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1410
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1411 switch (node->token.type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1412 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1413 case CONCAT:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1414 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1415
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1416 case END_OF_RE:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1417 assert (node->next == NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1418 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1419
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1420 case OP_DUP_ASTERISK:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1421 case OP_ALT:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1422 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1423 int left, right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1424 dfa->has_plural_match = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1425 if (node->left != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1426 left = node->left->first->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1427 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1428 left = node->next->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1429 if (node->right != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1430 right = node->right->first->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1431 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1432 right = node->next->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1433 assert (left > -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1434 assert (right > -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1435 err = re_node_set_init_2 (dfa->edests + idx, left, right);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1436 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1437 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1438
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1439 case ANCHOR:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1440 case OP_OPEN_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1441 case OP_CLOSE_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1442 err = re_node_set_init_1 (dfa->edests + idx, node->next->node_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1443 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1444
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1445 case OP_BACK_REF:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1446 dfa->nexts[idx] = node->next->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1447 if (node->token.type == OP_BACK_REF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1448 re_node_set_init_1 (dfa->edests + idx, dfa->nexts[idx]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1449 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1450
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1451 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1452 assert (!IS_EPSILON_NODE (node->token.type));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1453 dfa->nexts[idx] = node->next->node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1454 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1455 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1456
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1457 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1458 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1459
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1460 /* Duplicate the epsilon closure of the node ROOT_NODE.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1461 Note that duplicated nodes have constraint INIT_CONSTRAINT in addition
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1462 to their own constraint. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1463
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1464 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1465 duplicate_node_closure (dfa, top_org_node, top_clone_node, root_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1466 init_constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1467 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1468 int top_org_node, top_clone_node, root_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1469 unsigned int init_constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1470 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1471 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1472 int org_node, clone_node, ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1473 unsigned int constraint = init_constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1474 for (org_node = top_org_node, clone_node = top_clone_node;;)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1475 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1476 int org_dest, clone_dest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1477 if (dfa->nodes[org_node].type == OP_BACK_REF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1478 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1479 /* If the back reference epsilon-transit, its destination must
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1480 also have the constraint. Then duplicate the epsilon closure
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1481 of the destination of the back reference, and store it in
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1482 edests of the back reference. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1483 org_dest = dfa->nexts[org_node];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1484 re_node_set_empty (dfa->edests + clone_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1485 err = duplicate_node (&clone_dest, dfa, org_dest, constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1486 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1487 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1488 dfa->nexts[clone_node] = dfa->nexts[org_node];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1489 ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1490 if (BE (ret < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1491 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1492 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1493 else if (dfa->edests[org_node].nelem == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1494 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1495 /* In case of the node can't epsilon-transit, don't duplicate the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1496 destination and store the original destination as the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1497 destination of the node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1498 dfa->nexts[clone_node] = dfa->nexts[org_node];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1499 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1500 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1501 else if (dfa->edests[org_node].nelem == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1502 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1503 /* In case of the node can epsilon-transit, and it has only one
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1504 destination. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1505 org_dest = dfa->edests[org_node].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1506 re_node_set_empty (dfa->edests + clone_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1507 if (dfa->nodes[org_node].type == ANCHOR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1508 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1509 /* In case of the node has another constraint, append it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1510 if (org_node == root_node && clone_node != org_node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1511 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1512 /* ...but if the node is root_node itself, it means the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1513 epsilon closure have a loop, then tie it to the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1514 destination of the root_node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1515 ret = re_node_set_insert (dfa->edests + clone_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1516 org_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1517 if (BE (ret < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1518 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1519 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1520 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1521 constraint \|= dfa->nodes[org_node].opr.ctx_type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1522 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1523 err = duplicate_node (&clone_dest, dfa, org_dest, constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1524 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1525 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1526 ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1527 if (BE (ret < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1528 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1529 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1530 else /* dfa->edests[org_node].nelem == 2 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1531 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1532 /* In case of the node can epsilon-transit, and it has two
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1533 destinations. In the bin_tree_t and DFA, that's '\|' and ''. /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1534 org_dest = dfa->edests[org_node].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1535 re_node_set_empty (dfa->edests + clone_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1536 /* Search for a duplicated node which satisfies the constraint. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1537 clone_dest = search_duplicated_node (dfa, org_dest, constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1538 if (clone_dest == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1539 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1540 /* There are no such a duplicated node, create a new one. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1541 err = duplicate_node (&clone_dest, dfa, org_dest, constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1542 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1543 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1544 ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1545 if (BE (ret < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1546 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1547 err = duplicate_node_closure (dfa, org_dest, clone_dest,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1548 root_node, constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1549 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1550 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1551 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1552 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1553 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1554 /* There are a duplicated node which satisfy the constraint,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1555 use it to avoid infinite loop. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1556 ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1557 if (BE (ret < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1558 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1559 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1560
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1561 org_dest = dfa->edests[org_node].elems[1];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1562 err = duplicate_node (&clone_dest, dfa, org_dest, constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1563 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1564 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1565 ret = re_node_set_insert (dfa->edests + clone_node, clone_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1566 if (BE (ret < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1567 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1568 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1569 org_node = org_dest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1570 clone_node = clone_dest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1571 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1572 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1573 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1574
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1575 /* Search for a node which is duplicated from the node ORG_NODE, and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1576 satisfies the constraint CONSTRAINT. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1577
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1578 static int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1579 search_duplicated_node (dfa, org_node, constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1580 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1581 int org_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1582 unsigned int constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1583 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1584 int idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1585 for (idx = dfa->nodes_len - 1; dfa->nodes[idx].duplicated && idx > 0; --idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1586 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1587 if (org_node == dfa->org_indices[idx]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1588 && constraint == dfa->nodes[idx].constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1589 return idx; /* Found. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1590 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1591 return -1; /* Not found. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1592 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1593
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1594 /* Duplicate the node whose index is ORG_IDX and set the constraint CONSTRAINT.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1595 The new index will be stored in NEW_IDX and return REG_NOERROR if succeeded,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1596 otherwise return the error code. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1597
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1598 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1599 duplicate_node (new_idx, dfa, org_idx, constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1600 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1601 int *new_idx, org_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1602 unsigned int constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1603 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1604 int dup_idx = re_dfa_add_node (dfa, dfa->nodes[org_idx]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1605 if (BE (dup_idx == -1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1606 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1607 dfa->nodes[dup_idx].constraint = constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1608 if (dfa->nodes[org_idx].type == ANCHOR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1609 dfa->nodes[dup_idx].constraint \|= dfa->nodes[org_idx].opr.ctx_type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1610 dfa->nodes[dup_idx].duplicated = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1611
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1612 /* Store the index of the original node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1613 dfa->org_indices[dup_idx] = org_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1614 *new_idx = dup_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1615 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1616 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1617
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1618 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1619 calc_inveclosure (dfa)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1620 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1621 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1622 int src, idx, ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1623 for (idx = 0; idx < dfa->nodes_len; ++idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1624 re_node_set_init_empty (dfa->inveclosures + idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1625
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1626 for (src = 0; src < dfa->nodes_len; ++src)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1627 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1628 int *elems = dfa->eclosures[src].elems;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1629 for (idx = 0; idx < dfa->eclosures[src].nelem; ++idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1630 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1631 ret = re_node_set_insert_last (dfa->inveclosures + elems[idx], src);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1632 if (BE (ret == -1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1633 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1634 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1635 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1636
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1637 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1638 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1639
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1640 /* Calculate "eclosure" for all the node in DFA. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1641
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1642 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1643 calc_eclosure (dfa)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1644 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1645 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1646 int node_idx, incomplete;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1647 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1648 assert (dfa->nodes_len > 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1649 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1650 incomplete = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1651 /* For each nodes, calculate epsilon closure. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1652 for (node_idx = 0; ; ++node_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1653 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1654 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1655 re_node_set eclosure_elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1656 if (node_idx == dfa->nodes_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1657 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1658 if (!incomplete)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1659 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1660 incomplete = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1661 node_idx = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1662 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1663
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1664 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1665 assert (dfa->eclosures[node_idx].nelem != -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1666 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1667
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1668 /* If we have already calculated, skip it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1669 if (dfa->eclosures[node_idx].nelem != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1670 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1671 /* Calculate epsilon closure of `node_idx'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1672 err = calc_eclosure_iter (&eclosure_elem, dfa, node_idx, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1673 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1674 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1675
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1676 if (dfa->eclosures[node_idx].nelem == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1677 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1678 incomplete = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1679 re_node_set_free (&eclosure_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1680 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1681 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1682 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1683 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1684
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1685 /* Calculate epsilon closure of NODE. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1686
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1687 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1688 calc_eclosure_iter (new_set, dfa, node, root)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1689 re_node_set *new_set;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1690 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1691 int node, root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1692 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1693 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1694 unsigned int constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1695 int i, incomplete;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1696 re_node_set eclosure;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1697 incomplete = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1698 err = re_node_set_alloc (&eclosure, dfa->edests[node].nelem + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1699 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1700 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1701
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1702 /* This indicates that we are calculating this node now.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1703 We reference this value to avoid infinite loop. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1704 dfa->eclosures[node].nelem = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1705
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1706 constraint = ((dfa->nodes[node].type == ANCHOR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1707 ? dfa->nodes[node].opr.ctx_type : 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1708 /* If the current node has constraints, duplicate all nodes.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1709 Since they must inherit the constraints. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1710 if (constraint
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1711 && dfa->edests[node].nelem
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1712 && !dfa->nodes[dfa->edests[node].elems[0]].duplicated)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1713 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1714 int org_node, cur_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1715 org_node = cur_node = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1716 err = duplicate_node_closure (dfa, node, node, node, constraint);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1717 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1718 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1719 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1720
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1721 /* Expand each epsilon destination nodes. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1722 if (IS_EPSILON_NODE(dfa->nodes[node].type))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1723 for (i = 0; i < dfa->edests[node].nelem; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1724 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1725 re_node_set eclosure_elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1726 int edest = dfa->edests[node].elems[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1727 /* If calculating the epsilon closure of `edest' is in progress,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1728 return intermediate result. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1729 if (dfa->eclosures[edest].nelem == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1730 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1731 incomplete = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1732 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1733 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1734 /* If we haven't calculated the epsilon closure of `edest' yet,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1735 calculate now. Otherwise use calculated epsilon closure. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1736 if (dfa->eclosures[edest].nelem == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1737 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1738 err = calc_eclosure_iter (&eclosure_elem, dfa, edest, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1739 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1740 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1741 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1742 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1743 eclosure_elem = dfa->eclosures[edest];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1744 /* Merge the epsilon closure of `edest'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1745 re_node_set_merge (&eclosure, &eclosure_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1746 /* If the epsilon closure of `edest' is incomplete,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1747 the epsilon closure of this node is also incomplete. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1748 if (dfa->eclosures[edest].nelem == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1749 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1750 incomplete = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1751 re_node_set_free (&eclosure_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1752 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1753 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1754
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1755 /* Epsilon closures include itself. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1756 re_node_set_insert (&eclosure, node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1757 if (incomplete && !root)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1758 dfa->eclosures[node].nelem = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1759 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1760 dfa->eclosures[node] = eclosure;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1761 *new_set = eclosure;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1762 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1763 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1764
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1765 /* Functions for token which are used in the parser. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1766
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1767 /* Fetch a token from INPUT.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1768 We must not use this function inside bracket expressions. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1769
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1770 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1771 fetch_token (result, input, syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1772 re_token_t *result;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1773 re_string_t *input;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1774 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1775 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1776 re_string_skip_bytes (input, peek_token (result, input, syntax));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1777 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1778
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1779 /* Peek a token from INPUT, and return the length of the token.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1780 We must not use this function inside bracket expressions. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1781
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1782 static int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1783 peek_token (token, input, syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1784 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1785 re_string_t *input;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1786 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1787 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1788 unsigned char c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1789
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1790 if (re_string_eoi (input))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1791 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1792 token->type = END_OF_RE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1793 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1794 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1795
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1796 c = re_string_peek_byte (input, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1797 token->opr.c = c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1798
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1799 token->word_char = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1800 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1801 token->mb_partial = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1802 if (input->mb_cur_max > 1 &&
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1803 !re_string_first_byte (input, re_string_cur_idx (input)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1804 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1805 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1806 token->mb_partial = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1807 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1808 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1809 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1810 if (c == '\\')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1811 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1812 unsigned char c2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1813 if (re_string_cur_idx (input) + 1 >= re_string_length (input))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1814 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1815 token->type = BACK_SLASH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1816 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1817 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1818
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1819 c2 = re_string_peek_byte_case (input, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1820 token->opr.c = c2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1821 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1822 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1823 if (input->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1824 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1825 wint_t wc = re_string_wchar_at (input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1826 re_string_cur_idx (input) + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1827 token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1828 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1829 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1830 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1831 token->word_char = IS_WORD_CHAR (c2) != 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1832
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1833 switch (c2)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1834 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1835 case '\|':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1836 if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_NO_BK_VBAR))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1837 token->type = OP_ALT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1838 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1839 case '1': case '2': case '3': case '4': case '5':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1840 case '6': case '7': case '8': case '9':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1841 if (!(syntax & RE_NO_BK_REFS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1842 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1843 token->type = OP_BACK_REF;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1844 token->opr.idx = c2 - '1';
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1845 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1846 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1847 case '<':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1848 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1849 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1850 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1851 token->opr.ctx_type = WORD_FIRST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1852 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1853 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1854 case '>':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1855 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1856 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1857 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1858 token->opr.ctx_type = WORD_LAST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1859 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1860 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1861 case 'b':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1862 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1863 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1864 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1865 token->opr.ctx_type = WORD_DELIM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1866 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1867 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1868 case 'B':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1869 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1870 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1871 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1872 token->opr.ctx_type = NOT_WORD_DELIM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1873 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1874 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1875 case 'w':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1876 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1877 token->type = OP_WORD;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1878 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1879 case 'W':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1880 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1881 token->type = OP_NOTWORD;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1882 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1883 case 's':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1884 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1885 token->type = OP_SPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1886 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1887 case 'S':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1888 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1889 token->type = OP_NOTSPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1890 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1891 case '`':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1892 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1893 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1894 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1895 token->opr.ctx_type = BUF_FIRST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1896 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1897 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1898 case '\'':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1899 if (!(syntax & RE_NO_GNU_OPS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1900 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1901 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1902 token->opr.ctx_type = BUF_LAST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1903 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1904 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1905 case '(':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1906 if (!(syntax & RE_NO_BK_PARENS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1907 token->type = OP_OPEN_SUBEXP;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1908 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1909 case ')':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1910 if (!(syntax & RE_NO_BK_PARENS))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1911 token->type = OP_CLOSE_SUBEXP;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1912 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1913 case '+':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1914 if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_BK_PLUS_QM))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1915 token->type = OP_DUP_PLUS;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1916 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1917 case '?':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1918 if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_BK_PLUS_QM))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1919 token->type = OP_DUP_QUESTION;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1920 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1921 case '{':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1922 if ((syntax & RE_INTERVALS) && (!(syntax & RE_NO_BK_BRACES)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1923 token->type = OP_OPEN_DUP_NUM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1924 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1925 case '}':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1926 if ((syntax & RE_INTERVALS) && (!(syntax & RE_NO_BK_BRACES)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1927 token->type = OP_CLOSE_DUP_NUM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1928 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1929 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1930 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1931 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1932 return 2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1933 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1934
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1935 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1936 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1937 if (input->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1938 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1939 wint_t wc = re_string_wchar_at (input, re_string_cur_idx (input));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1940 token->word_char = IS_WIDE_WORD_CHAR (wc) != 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1941 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1942 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1943 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1944 token->word_char = IS_WORD_CHAR (token->opr.c);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1945
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1946 switch (c)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1947 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1948 case '\n':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1949 if (syntax & RE_NEWLINE_ALT)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1950 token->type = OP_ALT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1951 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1952 case '\|':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1953 if (!(syntax & RE_LIMITED_OPS) && (syntax & RE_NO_BK_VBAR))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1954 token->type = OP_ALT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1955 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1956 case '*':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1957 token->type = OP_DUP_ASTERISK;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1958 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1959 case '+':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1960 if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_BK_PLUS_QM))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1961 token->type = OP_DUP_PLUS;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1962 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1963 case '?':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1964 if (!(syntax & RE_LIMITED_OPS) && !(syntax & RE_BK_PLUS_QM))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1965 token->type = OP_DUP_QUESTION;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1966 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1967 case '{':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1968 if ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1969 token->type = OP_OPEN_DUP_NUM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1970 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1971 case '}':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1972 if ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1973 token->type = OP_CLOSE_DUP_NUM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1974 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1975 case '(':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1976 if (syntax & RE_NO_BK_PARENS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1977 token->type = OP_OPEN_SUBEXP;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1978 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1979 case ')':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1980 if (syntax & RE_NO_BK_PARENS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1981 token->type = OP_CLOSE_SUBEXP;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1982 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1983 case '[':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1984 token->type = OP_OPEN_BRACKET;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1985 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1986 case '.':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1987 token->type = OP_PERIOD;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1988 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1989 case '^':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1990 if (!(syntax & (RE_CONTEXT_INDEP_ANCHORS \| RE_CARET_ANCHORS_HERE)) &&
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1991 re_string_cur_idx (input) != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1992 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1993 char prev = re_string_peek_byte (input, -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1994 if (!(syntax & RE_NEWLINE_ALT) \|\| prev != '\n')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1995 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1996 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1997 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1998 token->opr.ctx_type = LINE_FIRST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1999 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2000 case '$':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2001 if (!(syntax & RE_CONTEXT_INDEP_ANCHORS) &&
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2002 re_string_cur_idx (input) + 1 != re_string_length (input))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2003 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2004 re_token_t next;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2005 re_string_skip_bytes (input, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2006 peek_token (&next, input, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2007 re_string_skip_bytes (input, -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2008 if (next.type != OP_ALT && next.type != OP_CLOSE_SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2009 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2010 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2011 token->type = ANCHOR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2012 token->opr.ctx_type = LINE_LAST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2013 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2014 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2015 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2016 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2017 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2018 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2019
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2020 /* Peek a token from INPUT, and return the length of the token.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2021 We must not use this function out of bracket expressions. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2022
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2023 static int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2024 peek_token_bracket (token, input, syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2025 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2026 re_string_t *input;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2027 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2028 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2029 unsigned char c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2030 if (re_string_eoi (input))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2031 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2032 token->type = END_OF_RE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2033 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2034 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2035 c = re_string_peek_byte (input, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2036 token->opr.c = c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2037
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2038 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2039 if (input->mb_cur_max > 1 &&
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2040 !re_string_first_byte (input, re_string_cur_idx (input)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2041 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2042 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2043 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2044 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2045 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2046
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2047 if (c == '\\' && (syntax & RE_BACKSLASH_ESCAPE_IN_LISTS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2048 && re_string_cur_idx (input) + 1 < re_string_length (input))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2049 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2050 /* In this case, '\' escape a character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2051 unsigned char c2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2052 re_string_skip_bytes (input, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2053 c2 = re_string_peek_byte (input, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2054 token->opr.c = c2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2055 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2056 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2057 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2058 if (c == '[') /* '[' is a special char in a bracket exps. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2059 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2060 unsigned char c2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2061 int token_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2062 if (re_string_cur_idx (input) + 1 < re_string_length (input))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2063 c2 = re_string_peek_byte (input, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2064 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2065 c2 = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2066 token->opr.c = c2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2067 token_len = 2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2068 switch (c2)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2069 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2070 case '.':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2071 token->type = OP_OPEN_COLL_ELEM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2072 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2073 case '=':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2074 token->type = OP_OPEN_EQUIV_CLASS;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2075 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2076 case ':':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2077 if (syntax & RE_CHAR_CLASSES)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2078 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2079 token->type = OP_OPEN_CHAR_CLASS;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2080 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2081 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2082 /* else fall through. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2083 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2084 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2085 token->opr.c = c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2086 token_len = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2087 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2088 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2089 return token_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2090 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2091 switch (c)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2092 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2093 case '-':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2094 token->type = OP_CHARSET_RANGE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2095 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2096 case ']':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2097 token->type = OP_CLOSE_BRACKET;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2098 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2099 case '^':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2100 token->type = OP_NON_MATCH_LIST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2101 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2102 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2103 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2104 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2105 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2106 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2107
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2108 /* Functions for parser. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2109
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2110 /* Entry point of the parser.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2111 Parse the regular expression REGEXP and return the structure tree.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2112 If an error is occured, ERR is set by error code, and return NULL.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2113 This function build the following tree, from regular expression <reg_exp>:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2114 CAT
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2115 / \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2116 / \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2117 <reg_exp> EOR
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2118
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2119 CAT means concatenation.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2120 EOR means end of regular expression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2121
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2122 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2123 parse (regexp, preg, syntax, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2124 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2125 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2126 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2127 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2128 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2129 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2130 bin_tree_t tree, eor, *root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2131 re_token_t current_token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2132 dfa->syntax = syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2133 fetch_token (&current_token, regexp, syntax \| RE_CARET_ANCHORS_HERE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2134 tree = parse_reg_exp (regexp, preg, &current_token, syntax, 0, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2135 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2136 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2137 eor = create_tree (dfa, NULL, NULL, END_OF_RE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2138 if (tree != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2139 root = create_tree (dfa, tree, eor, CONCAT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2140 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2141 root = eor;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2142 if (BE (eor == NULL \|\| root == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2143 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2144 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2145 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2146 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2147 return root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2148 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2149
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2150 /* This function build the following tree, from regular expression
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2151 <branch1>\|<branch2>:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2152 ALT
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2153 / \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2154 / \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2155 <branch1> <branch2>
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2156
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2157 ALT means alternative, which represents the operator `\|'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2158
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2159 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2160 parse_reg_exp (regexp, preg, token, syntax, nest, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2161 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2162 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2163 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2164 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2165 int nest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2166 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2167 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2168 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2169 bin_tree_t tree, branch = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2170 tree = parse_branch (regexp, preg, token, syntax, nest, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2171 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2172 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2173
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2174 while (token->type == OP_ALT)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2175 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2176 fetch_token (token, regexp, syntax \| RE_CARET_ANCHORS_HERE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2177 if (token->type != OP_ALT && token->type != END_OF_RE
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2178 && (nest == 0 \|\| token->type != OP_CLOSE_SUBEXP))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2179 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2180 branch = parse_branch (regexp, preg, token, syntax, nest, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2181 if (BE (*err != REG_NOERROR && branch == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2182 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2183 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2184 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2185 branch = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2186 tree = create_tree (dfa, tree, branch, OP_ALT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2187 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2188 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2189 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2190 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2191 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2192 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2193 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2194 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2195
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2196 /* This function build the following tree, from regular expression
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2197 <exp1><exp2>:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2198 CAT
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2199 / \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2200 / \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2201 <exp1> <exp2>
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2202
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2203 CAT means concatenation. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2204
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2205 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2206 parse_branch (regexp, preg, token, syntax, nest, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2207 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2208 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2209 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2210 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2211 int nest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2212 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2213 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2214 bin_tree_t tree, exp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2215 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2216 tree = parse_expression (regexp, preg, token, syntax, nest, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2217 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2218 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2219
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2220 while (token->type != OP_ALT && token->type != END_OF_RE
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2221 && (nest == 0 \|\| token->type != OP_CLOSE_SUBEXP))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2222 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2223 exp = parse_expression (regexp, preg, token, syntax, nest, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2224 if (BE (*err != REG_NOERROR && exp == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2225 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2226 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2227 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2228 if (tree != NULL && exp != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2229 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2230 tree = create_tree (dfa, tree, exp, CONCAT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2231 if (tree == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2232 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2233 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2234 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2235 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2236 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2237 else if (tree == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2238 tree = exp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2239 /* Otherwise exp == NULL, we don't need to create new tree. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2240 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2241 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2242 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2243
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2244 /* This function build the following tree, from regular expression a*:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2245 *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2246 \|
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2247 a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2248 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2249
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2250 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2251 parse_expression (regexp, preg, token, syntax, nest, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2252 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2253 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2254 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2255 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2256 int nest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2257 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2258 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2259 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2260 bin_tree_t *tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2261 switch (token->type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2262 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2263 case CHARACTER:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2264 tree = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2265 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2266 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2267 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2268 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2269 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2270 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2271 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2272 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2273 while (!re_string_eoi (regexp)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2274 && !re_string_first_byte (regexp, re_string_cur_idx (regexp)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2275 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2276 bin_tree_t *mbc_remain;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2277 fetch_token (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2278 mbc_remain = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2279 tree = create_tree (dfa, tree, mbc_remain, CONCAT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2280 if (BE (mbc_remain == NULL \|\| tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2281 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2282 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2283 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2284 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2285 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2286 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2287 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2288 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2289 case OP_OPEN_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2290 tree = parse_sub_exp (regexp, preg, token, syntax, nest + 1, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2291 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2292 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2293 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2294 case OP_OPEN_BRACKET:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2295 tree = parse_bracket_exp (regexp, dfa, token, syntax, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2296 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2297 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2298 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2299 case OP_BACK_REF:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2300 if (!BE (dfa->completed_bkref_map & (1 << token->opr.idx), 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2301 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2302 *err = REG_ESUBREG;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2303 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2304 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2305 dfa->used_bkref_map \|= 1 << token->opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2306 tree = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2307 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2308 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2309 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2310 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2311 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2312 ++dfa->nbackref;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2313 dfa->has_mb_node = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2314 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2315 case OP_OPEN_DUP_NUM:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2316 if (syntax & RE_CONTEXT_INVALID_DUP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2317 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2318 *err = REG_BADRPT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2319 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2320 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2321 /* FALLTHROUGH */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2322 case OP_DUP_ASTERISK:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2323 case OP_DUP_PLUS:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2324 case OP_DUP_QUESTION:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2325 if (syntax & RE_CONTEXT_INVALID_OPS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2326 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2327 *err = REG_BADRPT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2328 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2329 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2330 else if (syntax & RE_CONTEXT_INDEP_OPS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2331 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2332 fetch_token (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2333 return parse_expression (regexp, preg, token, syntax, nest, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2334 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2335 /* else fall through */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2336 case OP_CLOSE_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2337 if ((token->type == OP_CLOSE_SUBEXP) &&
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2338 !(syntax & RE_UNMATCHED_RIGHT_PAREN_ORD))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2339 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2340 *err = REG_ERPAREN;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2341 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2342 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2343 /* else fall through */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2344 case OP_CLOSE_DUP_NUM:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2345 /* We treat it as a normal character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2346
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2347 /* Then we can these characters as normal characters. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2348 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2349 /* mb_partial and word_char bits should be initialized already
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2350 by peek_token. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2351 tree = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2352 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2353 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2354 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2355 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2356 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2357 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2358 case ANCHOR:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2359 if ((token->opr.ctx_type
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2360 & (WORD_DELIM \| NOT_WORD_DELIM \| WORD_FIRST \| WORD_LAST))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2361 && dfa->word_ops_used == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2362 init_word_char (dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2363 if (token->opr.ctx_type == WORD_DELIM
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2364 \|\| token->opr.ctx_type == NOT_WORD_DELIM)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2365 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2366 bin_tree_t tree_first, tree_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2367 if (token->opr.ctx_type == WORD_DELIM)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2368 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2369 token->opr.ctx_type = WORD_FIRST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2370 tree_first = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2371 token->opr.ctx_type = WORD_LAST;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2372 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2373 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2374 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2375 token->opr.ctx_type = INSIDE_WORD;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2376 tree_first = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2377 token->opr.ctx_type = INSIDE_NOTWORD;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2378 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2379 tree_last = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2380 tree = create_tree (dfa, tree_first, tree_last, OP_ALT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2381 if (BE (tree_first == NULL \|\| tree_last == NULL \|\| tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2382 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2383 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2384 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2385 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2386 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2387 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2388 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2389 tree = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2390 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2391 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2392 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2393 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2394 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2395 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2396 /* We must return here, since ANCHORs can't be followed
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2397 by repetition operators.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2398 eg. RE"^" is invalid or "<ANCHOR(^)><CHAR()>",
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2399 it must not be "<ANCHOR(^)><REPEAT()>". /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2400 fetch_token (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2401 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2402 case OP_PERIOD:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2403 tree = create_token_tree (dfa, NULL, NULL, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2404 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2405 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2406 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2407 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2408 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2409 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2410 dfa->has_mb_node = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2411 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2412 case OP_WORD:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2413 case OP_NOTWORD:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2414 tree = build_charclass_op (dfa, regexp->trans,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2415 (const unsigned char *) "alnum",
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2416 (const unsigned char *) "_",
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2417 token->type == OP_NOTWORD, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2418 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2419 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2420 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2421 case OP_SPACE:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2422 case OP_NOTSPACE:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2423 tree = build_charclass_op (dfa, regexp->trans,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2424 (const unsigned char *) "space",
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2425 (const unsigned char *) "",
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2426 token->type == OP_NOTSPACE, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2427 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2428 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2429 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2430 case OP_ALT:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2431 case END_OF_RE:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2432 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2433 case BACK_SLASH:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2434 *err = REG_EESCAPE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2435 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2436 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2437 /* Must not happen? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2438 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2439 assert (0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2440 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2441 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2442 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2443 fetch_token (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2444
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2445 while (token->type == OP_DUP_ASTERISK \|\| token->type == OP_DUP_PLUS
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2446 \|\| token->type == OP_DUP_QUESTION \|\| token->type == OP_OPEN_DUP_NUM)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2447 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2448 tree = parse_dup_op (tree, regexp, dfa, token, syntax, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2449 if (BE (*err != REG_NOERROR && tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2450 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2451 /* In BRE consecutive duplications are not allowed. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2452 if ((syntax & RE_CONTEXT_INVALID_DUP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2453 && (token->type == OP_DUP_ASTERISK
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2454 \|\| token->type == OP_OPEN_DUP_NUM))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2455 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2456 *err = REG_BADRPT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2457 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2458 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2459 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2460
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2461 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2462 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2463
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2464 /* This function build the following tree, from regular expression
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2465 (<reg_exp>):
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2466 SUBEXP
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2467 \|
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2468 <reg_exp>
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2469 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2470
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2471 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2472 parse_sub_exp (regexp, preg, token, syntax, nest, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2473 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2474 regex_t *preg;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2475 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2476 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2477 int nest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2478 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2479 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2480 re_dfa_t dfa = (re_dfa_t ) preg->buffer;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2481 bin_tree_t *tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2482 size_t cur_nsub;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2483 cur_nsub = preg->re_nsub++;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2484
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2485 fetch_token (token, regexp, syntax \| RE_CARET_ANCHORS_HERE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2486
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2487 /* The subexpression may be a null string. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2488 if (token->type == OP_CLOSE_SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2489 tree = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2490 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2491 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2492 tree = parse_reg_exp (regexp, preg, token, syntax, nest, err);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2493 if (BE (*err == REG_NOERROR && token->type != OP_CLOSE_SUBEXP, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2494 *err = REG_EPAREN;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2495 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2496 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2497 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2498 dfa->completed_bkref_map \|= 1 << cur_nsub;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2499
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2500 tree = create_tree (dfa, tree, NULL, SUBEXP);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2501 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2502 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2503 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2504 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2505 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2506 tree->token.opr.idx = cur_nsub;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2507 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2508 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2509
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2510 /* This function parse repetition operators like "", "+", "{1,3}" etc. /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2511
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2512 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2513 parse_dup_op (elem, regexp, dfa, token, syntax, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2514 bin_tree_t *elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2515 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2516 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2517 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2518 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2519 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2520 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2521 bin_tree_t tree = NULL, old_tree = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2522 int i, start, end, start_idx = re_string_cur_idx (regexp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2523 re_token_t start_token = *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2524
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2525 if (token->type == OP_OPEN_DUP_NUM)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2526 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2527 end = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2528 start = fetch_number (regexp, token, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2529 if (start == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2530 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2531 if (token->type == CHARACTER && token->opr.c == ',')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2532 start = 0; /* We treat "{,m}" as "{0,m}". */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2533 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2534 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2535 err = REG_BADBR; / <re>{} is invalid. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2536 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2537 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2538 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2539 if (BE (start != -2, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2540 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2541 /* We treat "{n}" as "{n,n}". */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2542 end = ((token->type == OP_CLOSE_DUP_NUM) ? start
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2543 : ((token->type == CHARACTER && token->opr.c == ',')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2544 ? fetch_number (regexp, token, syntax) : -2));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2545 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2546 if (BE (start == -2 \|\| end == -2, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2547 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2548 /* Invalid sequence. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2549 if (BE (!(syntax & RE_INVALID_INTERVAL_ORD), 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2550 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2551 if (token->type == END_OF_RE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2552 *err = REG_EBRACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2553 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2554 *err = REG_BADBR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2555
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2556 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2557 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2558
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2559 /* If the syntax bit is set, rollback. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2560 re_string_set_index (regexp, start_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2561 *token = start_token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2562 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2563 /* mb_partial and word_char bits should be already initialized by
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2564 peek_token. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2565 return elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2566 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2567
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2568 if (BE (end != -1 && start > end, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2569 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2570 /* First number greater than second. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2571 *err = REG_BADBR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2572 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2573 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2574 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2575 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2576 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2577 start = (token->type == OP_DUP_PLUS) ? 1 : 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2578 end = (token->type == OP_DUP_QUESTION) ? 1 : -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2579 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2580
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2581 fetch_token (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2582
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2583 if (BE (elem == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2584 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2585 if (BE (start == 0 && end == 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2586 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2587 postorder (elem, free_tree, NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2588 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2589 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2590
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2591 /* Extract "<re>{n,m}" to "<re><re>...<re><re>{0,<m-n>}". */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2592 if (BE (start > 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2593 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2594 tree = elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2595 for (i = 2; i <= start; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2596 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2597 elem = duplicate_tree (elem, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2598 tree = create_tree (dfa, tree, elem, CONCAT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2599 if (BE (elem == NULL \|\| tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2600 goto parse_dup_op_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2601 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2602
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2603 if (start == end)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2604 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2605
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2606 /* Duplicate ELEM before it is marked optional. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2607 elem = duplicate_tree (elem, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2608 old_tree = tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2609 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2610 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2611 old_tree = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2612
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2613 if (elem->token.type == SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2614 postorder (elem, mark_opt_subexp, (void *) (long) elem->token.opr.idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2615
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2616 tree = create_tree (dfa, elem, NULL, (end == -1 ? OP_DUP_ASTERISK : OP_ALT));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2617 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2618 goto parse_dup_op_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2619
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2620 /* This loop is actually executed only when end != -1,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2621 to rewrite <re>{0,n} as (<re>(<re>...<re>?)?)?... We have
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2622 already created the start+1-th copy. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2623 for (i = start + 2; i <= end; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2624 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2625 elem = duplicate_tree (elem, dfa);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2626 tree = create_tree (dfa, tree, elem, CONCAT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2627 if (BE (elem == NULL \|\| tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2628 goto parse_dup_op_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2629
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2630 tree = create_tree (dfa, tree, NULL, OP_ALT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2631 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2632 goto parse_dup_op_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2633 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2634
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2635 if (old_tree)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2636 tree = create_tree (dfa, old_tree, tree, CONCAT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2637
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2638 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2639
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2640 parse_dup_op_espace:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2641 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2642 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2643 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2644
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2645 /* Size of the names for collating symbol/equivalence_class/character_class.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2646 I'm not sure, but maybe enough. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2647 #define BRACKET_NAME_BUF_SIZE 32
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2648
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2649 #ifndef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2650 /* Local function for parse_bracket_exp only used in case of NOT _LIBC.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2651 Build the range expression which starts from START_ELEM, and ends
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2652 at END_ELEM. The result are written to MBCSET and SBCSET.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2653 RANGE_ALLOC is the allocated size of mbcset->range_starts, and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2654 mbcset->range_ends, is a pointer argument sinse we may
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2655 update it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2656
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2657 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2658 # ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2659 build_range_exp (sbcset, mbcset, range_alloc, start_elem, end_elem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2660 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2661 int *range_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2662 # else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2663 build_range_exp (sbcset, start_elem, end_elem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2664 # endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2665 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2666 bracket_elem_t start_elem, end_elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2667 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2668 unsigned int start_ch, end_ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2669 /* Equivalence Classes and Character Classes can't be a range start/end. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2670 if (BE (start_elem->type == EQUIV_CLASS \|\| start_elem->type == CHAR_CLASS
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2671 \|\| end_elem->type == EQUIV_CLASS \|\| end_elem->type == CHAR_CLASS,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2672 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2673 return REG_ERANGE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2674
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2675 /* We can handle no multi character collating elements without libc
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2676 support. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2677 if (BE ((start_elem->type == COLL_SYM
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2678 && strlen ((char *) start_elem->opr.name) > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2679 \|\| (end_elem->type == COLL_SYM
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2680 && strlen ((char *) end_elem->opr.name) > 1), 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2681 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2682
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2683 # ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2684 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2685 wchar_t wc, start_wc, end_wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2686 wchar_t cmp_buf[6] = {L'\0', L'\0', L'\0', L'\0', L'\0', L'\0'};
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2687
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2688 start_ch = ((start_elem->type == SB_CHAR) ? start_elem->opr.ch
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2689 : ((start_elem->type == COLL_SYM) ? start_elem->opr.name[0]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2690 : 0));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2691 end_ch = ((end_elem->type == SB_CHAR) ? end_elem->opr.ch
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2692 : ((end_elem->type == COLL_SYM) ? end_elem->opr.name[0]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2693 : 0));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2694 start_wc = ((start_elem->type == SB_CHAR \|\| start_elem->type == COLL_SYM)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2695 ? __btowc (start_ch) : start_elem->opr.wch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2696 end_wc = ((end_elem->type == SB_CHAR \|\| end_elem->type == COLL_SYM)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2697 ? __btowc (end_ch) : end_elem->opr.wch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2698 if (start_wc == WEOF \|\| end_wc == WEOF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2699 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2700 cmp_buf[0] = start_wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2701 cmp_buf[4] = end_wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2702 if (wcscoll (cmp_buf, cmp_buf + 4) > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2703 return REG_ERANGE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2704
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2705 /* Got valid collation sequence values, add them as a new entry.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2706 However, for !_LIBC we have no collation elements: if the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2707 character set is single byte, the single byte character set
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2708 that we build below suffices. parse_bracket_exp passes
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2709 no MBCSET if dfa->mb_cur_max == 1. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2710 if (mbcset)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2711 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2712 /* Check the space of the arrays. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2713 if (BE (*range_alloc == mbcset->nranges, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2714 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2715 /* There is not enough space, need realloc. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2716 wchar_t new_array_start, new_array_end;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2717 int new_nranges;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2718
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2719 /* +1 in case of mbcset->nranges is 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2720 new_nranges = 2 * mbcset->nranges + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2721 /* Use realloc since mbcset->range_starts and mbcset->range_ends
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2722 are NULL if range_alloc == 0. /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2723 new_array_start = re_realloc (mbcset->range_starts, wchar_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2724 new_nranges);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2725 new_array_end = re_realloc (mbcset->range_ends, wchar_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2726 new_nranges);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2727
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2728 if (BE (new_array_start == NULL \|\| new_array_end == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2729 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2730
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2731 mbcset->range_starts = new_array_start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2732 mbcset->range_ends = new_array_end;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2733 *range_alloc = new_nranges;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2734 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2735
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2736 mbcset->range_starts[mbcset->nranges] = start_wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2737 mbcset->range_ends[mbcset->nranges++] = end_wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2738 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2739
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2740 /* Build the table for single byte characters. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2741 for (wc = 0; wc < SBC_MAX; ++wc)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2742 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2743 cmp_buf[2] = wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2744 if (wcscoll (cmp_buf, cmp_buf + 2) <= 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2745 && wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2746 bitset_set (sbcset, wc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2747 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2748 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2749 # else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2750 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2751 unsigned int ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2752 start_ch = ((start_elem->type == SB_CHAR ) ? start_elem->opr.ch
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2753 : ((start_elem->type == COLL_SYM) ? start_elem->opr.name[0]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2754 : 0));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2755 end_ch = ((end_elem->type == SB_CHAR ) ? end_elem->opr.ch
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2756 : ((end_elem->type == COLL_SYM) ? end_elem->opr.name[0]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2757 : 0));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2758 if (start_ch > end_ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2759 return REG_ERANGE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2760 /* Build the table for single byte characters. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2761 for (ch = 0; ch < SBC_MAX; ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2762 if (start_ch <= ch && ch <= end_ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2763 bitset_set (sbcset, ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2764 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2765 # endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2766 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2767 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2768 #endif /* not _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2769
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2770 #ifndef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2771 /* Helper function for parse_bracket_exp only used in case of NOT _LIBC..
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2772 Build the collating element which is represented by NAME.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2773 The result are written to MBCSET and SBCSET.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2774 COLL_SYM_ALLOC is the allocated size of mbcset->coll_sym, is a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2775 pointer argument since we may update it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2776
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2777 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2778 # ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2779 build_collating_symbol (sbcset, mbcset, coll_sym_alloc, name)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2780 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2781 int *coll_sym_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2782 # else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2783 build_collating_symbol (sbcset, name)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2784 # endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2785 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2786 const unsigned char *name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2787 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2788 size_t name_len = strlen ((const char *) name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2789 if (BE (name_len != 1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2790 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2791 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2792 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2793 bitset_set (sbcset, name[0]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2794 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2795 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2796 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2797 #endif /* not _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2798
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2799 /* This function parse bracket expression like "[abc]", "[a-c]",
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2800 "[[.a-a.]]" etc. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2801
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2802 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2803 parse_bracket_exp (regexp, dfa, token, syntax, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2804 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2805 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2806 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2807 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2808 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2809 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2810 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2811 const unsigned char *collseqmb;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2812 const char *collseqwc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2813 uint32_t nrules;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2814 int32_t table_size;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2815 const int32_t *symb_table;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2816 const unsigned char *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2817
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2818 /* Local function for parse_bracket_exp used in _LIBC environement.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2819 Seek the collating symbol entry correspondings to NAME.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2820 Return the index of the symbol in the SYMB_TABLE. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2821
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2822 auto inline int32_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2823 __attribute ((always_inline))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2824 seek_collating_symbol_entry (name, name_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2825 const unsigned char *name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2826 size_t name_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2827 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2828 int32_t hash = elem_hash ((const char *) name, name_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2829 int32_t elem = hash % table_size;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2830 int32_t second = hash % (table_size - 2);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2831 while (symb_table[2 * elem] != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2832 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2833 /* First compare the hashing value. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2834 if (symb_table[2 * elem] == hash
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2835 /* Compare the length of the name. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2836 && name_len == extra[symb_table[2 * elem + 1]]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2837 /* Compare the name. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2838 && memcmp (name, &extra[symb_table[2 * elem + 1] + 1],
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2839 name_len) == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2840 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2841 /* Yep, this is the entry. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2842 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2843 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2844
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2845 /* Next entry. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2846 elem += second;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2847 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2848 return elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2849 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2850
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2851 /* Local function for parse_bracket_exp used in _LIBC environement.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2852 Look up the collation sequence value of BR_ELEM.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2853 Return the value if succeeded, UINT_MAX otherwise. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2854
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2855 auto inline unsigned int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2856 __attribute ((always_inline))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2857 lookup_collation_sequence_value (br_elem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2858 bracket_elem_t *br_elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2859 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2860 if (br_elem->type == SB_CHAR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2861 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2862 /*
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2863 if (MB_CUR_MAX == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2864 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2865 if (nrules == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2866 return collseqmb[br_elem->opr.ch];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2867 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2868 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2869 wint_t wc = __btowc (br_elem->opr.ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2870 return __collseq_table_lookup (collseqwc, wc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2871 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2872 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2873 else if (br_elem->type == MB_CHAR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2874 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2875 return __collseq_table_lookup (collseqwc, br_elem->opr.wch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2876 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2877 else if (br_elem->type == COLL_SYM)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2878 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2879 size_t sym_name_len = strlen ((char *) br_elem->opr.name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2880 if (nrules != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2881 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2882 int32_t elem, idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2883 elem = seek_collating_symbol_entry (br_elem->opr.name,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2884 sym_name_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2885 if (symb_table[2 * elem] != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2886 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2887 /* We found the entry. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2888 idx = symb_table[2 * elem + 1];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2889 /* Skip the name of collating element name. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2890 idx += 1 + extra[idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2891 /* Skip the byte sequence of the collating element. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2892 idx += 1 + extra[idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2893 /* Adjust for the alignment. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2894 idx = (idx + 3) & ~3;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2895 /* Skip the multibyte collation sequence value. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2896 idx += sizeof (unsigned int);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2897 /* Skip the wide char sequence of the collating element. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2898 idx += sizeof (unsigned int) *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2899 (1 + (unsigned int ) (extra + idx));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2900 /* Return the collation sequence value. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2901 return (unsigned int ) (extra + idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2902 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2903 else if (symb_table[2 * elem] == 0 && sym_name_len == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2904 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2905 /* No valid character. Match it as a single byte
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2906 character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2907 return collseqmb[br_elem->opr.name[0]];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2908 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2909 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2910 else if (sym_name_len == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2911 return collseqmb[br_elem->opr.name[0]];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2912 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2913 return UINT_MAX;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2914 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2915
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2916 /* Local function for parse_bracket_exp used in _LIBC environement.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2917 Build the range expression which starts from START_ELEM, and ends
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2918 at END_ELEM. The result are written to MBCSET and SBCSET.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2919 RANGE_ALLOC is the allocated size of mbcset->range_starts, and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2920 mbcset->range_ends, is a pointer argument sinse we may
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2921 update it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2922
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2923 auto inline reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2924 __attribute ((always_inline))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2925 build_range_exp (sbcset, mbcset, range_alloc, start_elem, end_elem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2926 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2927 int *range_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2928 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2929 bracket_elem_t start_elem, end_elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2930 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2931 unsigned int ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2932 uint32_t start_collseq;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2933 uint32_t end_collseq;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2934
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2935 /* Equivalence Classes and Character Classes can't be a range
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2936 start/end. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2937 if (BE (start_elem->type == EQUIV_CLASS \|\| start_elem->type == CHAR_CLASS
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2938 \|\| end_elem->type == EQUIV_CLASS \|\| end_elem->type == CHAR_CLASS,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2939 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2940 return REG_ERANGE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2941
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2942 start_collseq = lookup_collation_sequence_value (start_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2943 end_collseq = lookup_collation_sequence_value (end_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2944 /* Check start/end collation sequence values. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2945 if (BE (start_collseq == UINT_MAX \|\| end_collseq == UINT_MAX, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2946 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2947 if (BE ((syntax & RE_NO_EMPTY_RANGES) && start_collseq > end_collseq, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2948 return REG_ERANGE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2949
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2950 /* Got valid collation sequence values, add them as a new entry.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2951 However, if we have no collation elements, and the character set
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2952 is single byte, the single byte character set that we
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2953 build below suffices. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2954 if (nrules > 0 \|\| dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2955 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2956 /* Check the space of the arrays. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2957 if (BE (*range_alloc == mbcset->nranges, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2958 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2959 /* There is not enough space, need realloc. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2960 uint32_t *new_array_start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2961 uint32_t *new_array_end;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2962 int new_nranges;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2963
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2964 /* +1 in case of mbcset->nranges is 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2965 new_nranges = 2 * mbcset->nranges + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2966 new_array_start = re_realloc (mbcset->range_starts, uint32_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2967 new_nranges);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2968 new_array_end = re_realloc (mbcset->range_ends, uint32_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2969 new_nranges);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2970
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2971 if (BE (new_array_start == NULL \|\| new_array_end == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2972 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2973
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2974 mbcset->range_starts = new_array_start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2975 mbcset->range_ends = new_array_end;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2976 *range_alloc = new_nranges;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2977 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2978
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2979 mbcset->range_starts[mbcset->nranges] = start_collseq;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2980 mbcset->range_ends[mbcset->nranges++] = end_collseq;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2981 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2982
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2983 /* Build the table for single byte characters. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2984 for (ch = 0; ch < SBC_MAX; ch++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2985 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2986 uint32_t ch_collseq;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2987 /*
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2988 if (MB_CUR_MAX == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2989 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2990 if (nrules == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2991 ch_collseq = collseqmb[ch];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2992 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2993 ch_collseq = __collseq_table_lookup (collseqwc, __btowc (ch));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2994 if (start_collseq <= ch_collseq && ch_collseq <= end_collseq)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2995 bitset_set (sbcset, ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2996 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2997 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2998 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2999
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3000 /* Local function for parse_bracket_exp used in _LIBC environement.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3001 Build the collating element which is represented by NAME.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3002 The result are written to MBCSET and SBCSET.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3003 COLL_SYM_ALLOC is the allocated size of mbcset->coll_sym, is a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3004 pointer argument sinse we may update it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3005
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3006 auto inline reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3007 __attribute ((always_inline))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3008 build_collating_symbol (sbcset, mbcset, coll_sym_alloc, name)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3009 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3010 int *coll_sym_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3011 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3012 const unsigned char *name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3013 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3014 int32_t elem, idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3015 size_t name_len = strlen ((const char *) name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3016 if (nrules != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3017 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3018 elem = seek_collating_symbol_entry (name, name_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3019 if (symb_table[2 * elem] != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3020 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3021 /* We found the entry. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3022 idx = symb_table[2 * elem + 1];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3023 /* Skip the name of collating element name. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3024 idx += 1 + extra[idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3025 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3026 else if (symb_table[2 * elem] == 0 && name_len == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3027 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3028 /* No valid character, treat it as a normal
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3029 character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3030 bitset_set (sbcset, name[0]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3031 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3032 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3033 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3034 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3035
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3036 /* Got valid collation sequence, add it as a new entry. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3037 /* Check the space of the arrays. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3038 if (BE (*coll_sym_alloc == mbcset->ncoll_syms, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3039 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3040 /* Not enough, realloc it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3041 /* +1 in case of mbcset->ncoll_syms is 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3042 int new_coll_sym_alloc = 2 * mbcset->ncoll_syms + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3043 /* Use realloc since mbcset->coll_syms is NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3044 if alloc == 0. /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3045 int32_t *new_coll_syms = re_realloc (mbcset->coll_syms, int32_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3046 new_coll_sym_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3047 if (BE (new_coll_syms == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3048 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3049 mbcset->coll_syms = new_coll_syms;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3050 *coll_sym_alloc = new_coll_sym_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3051 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3052 mbcset->coll_syms[mbcset->ncoll_syms++] = idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3053 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3054 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3055 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3056 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3057 if (BE (name_len != 1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3058 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3059 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3060 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3061 bitset_set (sbcset, name[0]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3062 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3063 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3064 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3065 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3066 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3067
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3068 re_token_t br_token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3069 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3070 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3071 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3072 int coll_sym_alloc = 0, range_alloc = 0, mbchar_alloc = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3073 int equiv_class_alloc = 0, char_class_alloc = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3074 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3075 int non_match = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3076 bin_tree_t *work_tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3077 int token_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3078 int first_round = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3079 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3080 collseqmb = (const unsigned char *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3081 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3082 nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3083 if (nrules)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3084 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3085 /*
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3086 if (MB_CUR_MAX > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3087 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3088 collseqwc = _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQWC);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3089 table_size = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_SYMB_HASH_SIZEMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3090 symb_table = (const int32_t *) _NL_CURRENT (LC_COLLATE,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3091 _NL_COLLATE_SYMB_TABLEMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3092 extra = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3093 _NL_COLLATE_SYMB_EXTRAMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3094 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3095 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3096 sbcset = (re_bitset_ptr_t) calloc (sizeof (unsigned int), BITSET_UINTS);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3097 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3098 mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3099 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3100 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3101 if (BE (sbcset == NULL \|\| mbcset == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3102 #else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3103 if (BE (sbcset == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3104 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3105 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3106 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3107 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3108 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3109
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3110 token_len = peek_token_bracket (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3111 if (BE (token->type == END_OF_RE, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3112 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3113 *err = REG_BADPAT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3114 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3115 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3116 if (token->type == OP_NON_MATCH_LIST)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3117 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3118 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3119 mbcset->non_match = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3120 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3121 non_match = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3122 if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3123 bitset_set (sbcset, '\0');
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3124 re_string_skip_bytes (regexp, token_len); /* Skip a token. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3125 token_len = peek_token_bracket (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3126 if (BE (token->type == END_OF_RE, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3127 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3128 *err = REG_BADPAT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3129 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3130 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3131 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3132
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3133 /* We treat the first ']' as a normal character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3134 if (token->type == OP_CLOSE_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3135 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3136
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3137 while (1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3138 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3139 bracket_elem_t start_elem, end_elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3140 unsigned char start_name_buf[BRACKET_NAME_BUF_SIZE];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3141 unsigned char end_name_buf[BRACKET_NAME_BUF_SIZE];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3142 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3143 int token_len2 = 0, is_range_exp = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3144 re_token_t token2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3145
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3146 start_elem.opr.name = start_name_buf;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3147 ret = parse_bracket_element (&start_elem, regexp, token, token_len, dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3148 syntax, first_round);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3149 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3150 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3151 *err = ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3152 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3153 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3154 first_round = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3155
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3156 /* Get information about the next token. We need it in any case. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3157 token_len = peek_token_bracket (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3158
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3159 /* Do not check for ranges if we know they are not allowed. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3160 if (start_elem.type != CHAR_CLASS && start_elem.type != EQUIV_CLASS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3161 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3162 if (BE (token->type == END_OF_RE, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3163 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3164 *err = REG_EBRACK;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3165 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3166 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3167 if (token->type == OP_CHARSET_RANGE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3168 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3169 re_string_skip_bytes (regexp, token_len); /* Skip '-'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3170 token_len2 = peek_token_bracket (&token2, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3171 if (BE (token2.type == END_OF_RE, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3172 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3173 *err = REG_EBRACK;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3174 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3175 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3176 if (token2.type == OP_CLOSE_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3177 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3178 /* We treat the last '-' as a normal character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3179 re_string_skip_bytes (regexp, -token_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3180 token->type = CHARACTER;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3181 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3182 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3183 is_range_exp = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3184 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3185 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3186
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3187 if (is_range_exp == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3188 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3189 end_elem.opr.name = end_name_buf;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3190 ret = parse_bracket_element (&end_elem, regexp, &token2, token_len2,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3191 dfa, syntax, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3192 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3193 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3194 *err = ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3195 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3196 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3197
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3198 token_len = peek_token_bracket (token, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3199
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3200 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3201 *err = build_range_exp (sbcset, mbcset, &range_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3202 &start_elem, &end_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3203 #else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3204 # ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3205 *err = build_range_exp (sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3206 dfa->mb_cur_max > 1 ? mbcset : NULL,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3207 &range_alloc, &start_elem, &end_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3208 # else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3209 *err = build_range_exp (sbcset, &start_elem, &end_elem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3210 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3211 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3212 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3213 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3214 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3215 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3216 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3217 switch (start_elem.type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3218 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3219 case SB_CHAR:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3220 bitset_set (sbcset, start_elem.opr.ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3221 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3222 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3223 case MB_CHAR:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3224 /* Check whether the array has enough space. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3225 if (BE (mbchar_alloc == mbcset->nmbchars, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3226 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3227 wchar_t *new_mbchars;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3228 /* Not enough, realloc it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3229 /* +1 in case of mbcset->nmbchars is 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3230 mbchar_alloc = 2 * mbcset->nmbchars + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3231 /* Use realloc since array is NULL if alloc == 0. /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3232 new_mbchars = re_realloc (mbcset->mbchars, wchar_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3233 mbchar_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3234 if (BE (new_mbchars == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3235 goto parse_bracket_exp_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3236 mbcset->mbchars = new_mbchars;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3237 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3238 mbcset->mbchars[mbcset->nmbchars++] = start_elem.opr.wch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3239 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3240 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3241 case EQUIV_CLASS:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3242 *err = build_equiv_class (sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3243 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3244 mbcset, &equiv_class_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3245 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3246 start_elem.opr.name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3247 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3248 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3249 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3250 case COLL_SYM:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3251 *err = build_collating_symbol (sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3252 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3253 mbcset, &coll_sym_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3254 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3255 start_elem.opr.name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3256 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3257 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3258 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3259 case CHAR_CLASS:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3260 *err = build_charclass (regexp->trans, sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3261 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3262 mbcset, &char_class_alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3263 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3264 start_elem.opr.name, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3265 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3266 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3267 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3268 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3269 assert (0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3270 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3271 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3272 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3273 if (BE (token->type == END_OF_RE, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3274 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3275 *err = REG_EBRACK;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3276 goto parse_bracket_exp_free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3277 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3278 if (token->type == OP_CLOSE_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3279 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3280 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3281
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3282 re_string_skip_bytes (regexp, token_len); /* Skip a token. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3283
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3284 /* If it is non-matching list. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3285 if (non_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3286 bitset_not (sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3287
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3288 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3289 /* Ensure only single byte characters are set. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3290 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3291 bitset_mask (sbcset, dfa->sb_char);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3292
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3293 if (mbcset->nmbchars \|\| mbcset->ncoll_syms \|\| mbcset->nequiv_classes
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3294 \|\| mbcset->nranges \|\| (dfa->mb_cur_max > 1 && (mbcset->nchar_classes
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3295 \|\| mbcset->non_match)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3296 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3297 bin_tree_t *mbc_tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3298 int sbc_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3299 /* Build a tree for complex bracket. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3300 dfa->has_mb_node = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3301 br_token.type = COMPLEX_BRACKET;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3302 br_token.opr.mbcset = mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3303 mbc_tree = create_token_tree (dfa, NULL, NULL, &br_token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3304 if (BE (mbc_tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3305 goto parse_bracket_exp_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3306 for (sbc_idx = 0; sbc_idx < BITSET_UINTS; ++sbc_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3307 if (sbcset[sbc_idx])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3308 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3309 /* If there are no bits set in sbcset, there is no point
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3310 of having both SIMPLE_BRACKET and COMPLEX_BRACKET. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3311 if (sbc_idx < BITSET_UINTS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3312 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3313 /* Build a tree for simple bracket. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3314 br_token.type = SIMPLE_BRACKET;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3315 br_token.opr.sbcset = sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3316 work_tree = create_token_tree (dfa, NULL, NULL, &br_token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3317 if (BE (work_tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3318 goto parse_bracket_exp_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3319
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3320 /* Then join them by ALT node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3321 work_tree = create_tree (dfa, work_tree, mbc_tree, OP_ALT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3322 if (BE (work_tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3323 goto parse_bracket_exp_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3324 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3325 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3326 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3327 re_free (sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3328 work_tree = mbc_tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3329 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3330 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3331 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3332 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3333 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3334 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3335 free_charset (mbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3336 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3337 /* Build a tree for simple bracket. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3338 br_token.type = SIMPLE_BRACKET;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3339 br_token.opr.sbcset = sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3340 work_tree = create_token_tree (dfa, NULL, NULL, &br_token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3341 if (BE (work_tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3342 goto parse_bracket_exp_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3343 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3344 return work_tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3345
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3346 parse_bracket_exp_espace:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3347 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3348 parse_bracket_exp_free_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3349 re_free (sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3350 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3351 free_charset (mbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3352 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3353 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3354 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3355
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3356 /* Parse an element in the bracket expression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3357
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3358 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3359 parse_bracket_element (elem, regexp, token, token_len, dfa, syntax,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3360 accept_hyphen)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3361 bracket_elem_t *elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3362 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3363 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3364 int token_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3365 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3366 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3367 int accept_hyphen;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3368 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3369 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3370 int cur_char_size;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3371 cur_char_size = re_string_char_size_at (regexp, re_string_cur_idx (regexp));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3372 if (cur_char_size > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3373 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3374 elem->type = MB_CHAR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3375 elem->opr.wch = re_string_wchar_at (regexp, re_string_cur_idx (regexp));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3376 re_string_skip_bytes (regexp, cur_char_size);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3377 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3378 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3379 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3380 re_string_skip_bytes (regexp, token_len); /* Skip a token. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3381 if (token->type == OP_OPEN_COLL_ELEM \|\| token->type == OP_OPEN_CHAR_CLASS
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3382 \|\| token->type == OP_OPEN_EQUIV_CLASS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3383 return parse_bracket_symbol (elem, regexp, token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3384 if (BE (token->type == OP_CHARSET_RANGE, 0) && !accept_hyphen)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3385 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3386 /* A '-' must only appear as anything but a range indicator before
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3387 the closing bracket. Everything else is an error. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3388 re_token_t token2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3389 (void) peek_token_bracket (&token2, regexp, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3390 if (token2.type != OP_CLOSE_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3391 /* The actual error value is not standardized since this whole
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3392 case is undefined. But ERANGE makes good sense. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3393 return REG_ERANGE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3394 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3395 elem->type = SB_CHAR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3396 elem->opr.ch = token->opr.c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3397 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3398 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3399
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3400 /* Parse a bracket symbol in the bracket expression. Bracket symbols are
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3401 such as [:<character_class>:], [.<collating_element>.], and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3402 [=<equivalent_class>=]. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3403
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3404 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3405 parse_bracket_symbol (elem, regexp, token)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3406 bracket_elem_t *elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3407 re_string_t *regexp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3408 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3409 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3410 unsigned char ch, delim = token->opr.c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3411 int i = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3412 if (re_string_eoi(regexp))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3413 return REG_EBRACK;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3414 for (;; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3415 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3416 if (i >= BRACKET_NAME_BUF_SIZE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3417 return REG_EBRACK;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3418 if (token->type == OP_OPEN_CHAR_CLASS)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3419 ch = re_string_fetch_byte_case (regexp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3420 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3421 ch = re_string_fetch_byte (regexp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3422 if (re_string_eoi(regexp))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3423 return REG_EBRACK;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3424 if (ch == delim && re_string_peek_byte (regexp, 0) == ']')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3425 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3426 elem->opr.name[i] = ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3427 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3428 re_string_skip_bytes (regexp, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3429 elem->opr.name[i] = '\0';
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3430 switch (token->type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3431 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3432 case OP_OPEN_COLL_ELEM:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3433 elem->type = COLL_SYM;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3434 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3435 case OP_OPEN_EQUIV_CLASS:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3436 elem->type = EQUIV_CLASS;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3437 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3438 case OP_OPEN_CHAR_CLASS:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3439 elem->type = CHAR_CLASS;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3440 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3441 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3442 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3443 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3444 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3445 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3446
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3447 /* Helper function for parse_bracket_exp.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3448 Build the equivalence class which is represented by NAME.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3449 The result are written to MBCSET and SBCSET.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3450 EQUIV_CLASS_ALLOC is the allocated size of mbcset->equiv_classes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3451 is a pointer argument sinse we may update it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3452
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3453 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3454 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3455 build_equiv_class (sbcset, mbcset, equiv_class_alloc, name)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3456 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3457 int *equiv_class_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3458 #else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3459 build_equiv_class (sbcset, name)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3460 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3461 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3462 const unsigned char *name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3463 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3464 #if defined _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3465 uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3466 if (nrules != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3467 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3468 const int32_t table, indirect;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3469 const unsigned char weights, extra, *cp;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3470 unsigned char char_buf[2];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3471 int32_t idx1, idx2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3472 unsigned int ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3473 size_t len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3474 /* This #include defines a local function! */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3475 # include <locale/weight.h>
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3476 /* Calculate the index for equivalence class. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3477 cp = name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3478 table = (const int32_t *) _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3479 weights = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3480 _NL_COLLATE_WEIGHTMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3481 extra = (const unsigned char *) _NL_CURRENT (LC_COLLATE,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3482 _NL_COLLATE_EXTRAMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3483 indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3484 _NL_COLLATE_INDIRECTMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3485 idx1 = findidx (&cp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3486 if (BE (idx1 == 0 \|\| cp < name + strlen ((const char *) name), 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3487 /* This isn't a valid character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3488 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3489
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3490 /* Build single byte matcing table for this equivalence class. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3491 char_buf[1] = (unsigned char) '\0';
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3492 len = weights[idx1];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3493 for (ch = 0; ch < SBC_MAX; ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3494 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3495 char_buf[0] = ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3496 cp = char_buf;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3497 idx2 = findidx (&cp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3498 /*
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3499 idx2 = table[ch];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3500 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3501 if (idx2 == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3502 /* This isn't a valid character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3503 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3504 if (len == weights[idx2])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3505 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3506 int cnt = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3507 while (cnt <= len &&
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3508 weights[idx1 + 1 + cnt] == weights[idx2 + 1 + cnt])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3509 ++cnt;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3510
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3511 if (cnt > len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3512 bitset_set (sbcset, ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3513 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3514 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3515 /* Check whether the array has enough space. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3516 if (BE (*equiv_class_alloc == mbcset->nequiv_classes, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3517 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3518 /* Not enough, realloc it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3519 /* +1 in case of mbcset->nequiv_classes is 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3520 int new_equiv_class_alloc = 2 * mbcset->nequiv_classes + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3521 /* Use realloc since the array is NULL if alloc == 0. /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3522 int32_t *new_equiv_classes = re_realloc (mbcset->equiv_classes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3523 int32_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3524 new_equiv_class_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3525 if (BE (new_equiv_classes == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3526 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3527 mbcset->equiv_classes = new_equiv_classes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3528 *equiv_class_alloc = new_equiv_class_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3529 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3530 mbcset->equiv_classes[mbcset->nequiv_classes++] = idx1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3531 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3532 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3533 #endif /* _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3534 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3535 if (BE (strlen ((const char *) name) != 1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3536 return REG_ECOLLATE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3537 bitset_set (sbcset, *name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3538 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3539 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3540 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3541
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3542 /* Helper function for parse_bracket_exp.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3543 Build the character class which is represented by NAME.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3544 The result are written to MBCSET and SBCSET.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3545 CHAR_CLASS_ALLOC is the allocated size of mbcset->char_classes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3546 is a pointer argument sinse we may update it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3547
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3548 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3549 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3550 build_charclass (trans, sbcset, mbcset, char_class_alloc, class_name, syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3551 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3552 int *char_class_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3553 #else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3554 build_charclass (trans, sbcset, class_name, syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3555 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3556 unsigned RE_TRANSLATE_TYPE trans;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3557 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3558 const unsigned char *class_name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3559 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3560 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3561 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3562 const char name = (const char ) class_name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3563
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3564 /* In case of REG_ICASE "upper" and "lower" match the both of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3565 upper and lower cases. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3566 if ((syntax & RE_ICASE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3567 && (strcmp (name, "upper") == 0 \|\| strcmp (name, "lower") == 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3568 name = "alpha";
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3569
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3570 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3571 /* Check the space of the arrays. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3572 if (BE (*char_class_alloc == mbcset->nchar_classes, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3573 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3574 /* Not enough, realloc it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3575 /* +1 in case of mbcset->nchar_classes is 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3576 int new_char_class_alloc = 2 * mbcset->nchar_classes + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3577 /* Use realloc since array is NULL if alloc == 0. /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3578 wctype_t *new_char_classes = re_realloc (mbcset->char_classes, wctype_t,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3579 new_char_class_alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3580 if (BE (new_char_classes == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3581 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3582 mbcset->char_classes = new_char_classes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3583 *char_class_alloc = new_char_class_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3584 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3585 mbcset->char_classes[mbcset->nchar_classes++] = __wctype (name);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3586 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3587
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3588 #define BUILD_CHARCLASS_LOOP(ctype_func) \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3589 for (i = 0; i < SBC_MAX; ++i) \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3590 { \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3591 if (ctype_func (i)) \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3592 { \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3593 int ch = trans ? trans[i] : i; \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3594 bitset_set (sbcset, ch); \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3595 } \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3596 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3597
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3598 if (strcmp (name, "alnum") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3599 BUILD_CHARCLASS_LOOP (isalnum)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3600 else if (strcmp (name, "cntrl") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3601 BUILD_CHARCLASS_LOOP (iscntrl)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3602 else if (strcmp (name, "lower") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3603 BUILD_CHARCLASS_LOOP (islower)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3604 else if (strcmp (name, "space") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3605 BUILD_CHARCLASS_LOOP (isspace)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3606 else if (strcmp (name, "alpha") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3607 BUILD_CHARCLASS_LOOP (isalpha)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3608 else if (strcmp (name, "digit") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3609 BUILD_CHARCLASS_LOOP (isdigit)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3610 else if (strcmp (name, "print") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3611 BUILD_CHARCLASS_LOOP (isprint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3612 else if (strcmp (name, "upper") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3613 BUILD_CHARCLASS_LOOP (isupper)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3614 else if (strcmp (name, "blank") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3615 BUILD_CHARCLASS_LOOP (isblank)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3616 else if (strcmp (name, "graph") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3617 BUILD_CHARCLASS_LOOP (isgraph)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3618 else if (strcmp (name, "punct") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3619 BUILD_CHARCLASS_LOOP (ispunct)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3620 else if (strcmp (name, "xdigit") == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3621 BUILD_CHARCLASS_LOOP (isxdigit)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3622 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3623 return REG_ECTYPE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3624
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3625 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3626 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3627
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3628 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3629 build_charclass_op (dfa, trans, class_name, extra, non_match, err)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3630 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3631 unsigned RE_TRANSLATE_TYPE trans;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3632 const unsigned char *class_name;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3633 const unsigned char *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3634 int non_match;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3635 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3636 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3637 re_bitset_ptr_t sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3638 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3639 re_charset_t *mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3640 int alloc = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3641 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3642 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3643 re_token_t br_token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3644 bin_tree_t *tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3645
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3646 sbcset = (re_bitset_ptr_t) calloc (sizeof (unsigned int), BITSET_UINTS);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3647 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3648 mbcset = (re_charset_t *) calloc (sizeof (re_charset_t), 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3649 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3650
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3651 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3652 if (BE (sbcset == NULL \|\| mbcset == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3653 #else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3654 if (BE (sbcset == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3655 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3656 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3657 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3658 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3659 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3660
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3661 if (non_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3662 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3663 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3664 /*
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3665 if (syntax & RE_HAT_LISTS_NOT_NEWLINE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3666 bitset_set(cset->sbcset, '\0');
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3667 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3668 mbcset->non_match = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3669 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3670 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3671
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3672 /* We don't care the syntax in this case. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3673 ret = build_charclass (trans, sbcset,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3674 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3675 mbcset, &alloc,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3676 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3677 class_name, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3678
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3679 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3680 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3681 re_free (sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3682 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3683 free_charset (mbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3684 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3685 *err = ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3686 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3687 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3688 /* \w match '_' also. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3689 for (; *extra; extra++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3690 bitset_set (sbcset, *extra);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3691
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3692 /* If it is non-matching list. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3693 if (non_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3694 bitset_not (sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3695
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3696 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3697 /* Ensure only single byte characters are set. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3698 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3699 bitset_mask (sbcset, dfa->sb_char);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3700 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3701
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3702 /* Build a tree for simple bracket. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3703 br_token.type = SIMPLE_BRACKET;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3704 br_token.opr.sbcset = sbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3705 tree = create_token_tree (dfa, NULL, NULL, &br_token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3706 if (BE (tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3707 goto build_word_op_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3708
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3709 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3710 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3711 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3712 bin_tree_t *mbc_tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3713 /* Build a tree for complex bracket. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3714 br_token.type = COMPLEX_BRACKET;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3715 br_token.opr.mbcset = mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3716 dfa->has_mb_node = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3717 mbc_tree = create_token_tree (dfa, NULL, NULL, &br_token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3718 if (BE (mbc_tree == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3719 goto build_word_op_espace;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3720 /* Then join them by ALT node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3721 tree = create_tree (dfa, tree, mbc_tree, OP_ALT);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3722 if (BE (mbc_tree != NULL, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3723 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3724 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3725 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3726 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3727 free_charset (mbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3728 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3729 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3730 #else /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3731 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3732 #endif /* not RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3733
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3734 build_word_op_espace:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3735 re_free (sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3736 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3737 free_charset (mbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3738 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3739 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3740 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3741 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3742
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3743 /* This is intended for the expressions like "a{1,3}".
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3744 Fetch a number from `input', and return the number.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3745 Return -1, if the number field is empty like "{,1}".
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3746 Return -2, If an error is occured. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3747
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3748 static int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3749 fetch_number (input, token, syntax)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3750 re_string_t *input;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3751 re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3752 reg_syntax_t syntax;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3753 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3754 int num = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3755 unsigned char c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3756 while (1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3757 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3758 fetch_token (token, input, syntax);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3759 c = token->opr.c;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3760 if (BE (token->type == END_OF_RE, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3761 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3762 if (token->type == OP_CLOSE_DUP_NUM \|\| c == ',')
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3763 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3764 num = ((token->type != CHARACTER \|\| c < '0' \|\| '9' < c \|\| num == -2)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3765 ? -2 : ((num == -1) ? c - '0' : num * 10 + c - '0'));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3766 num = (num > RE_DUP_MAX) ? -2 : num;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3767 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3768 return num;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3769 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3770
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3771 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3772 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3773 free_charset (re_charset_t *cset)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3774 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3775 re_free (cset->mbchars);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3776 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3777 re_free (cset->coll_syms);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3778 re_free (cset->equiv_classes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3779 re_free (cset->range_starts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3780 re_free (cset->range_ends);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3781 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3782 re_free (cset->char_classes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3783 re_free (cset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3784 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3785 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3786
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3787 /* Functions for binary tree operation. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3788
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3789 /* Create a tree node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3790
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3791 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3792 create_tree (dfa, left, right, type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3793 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3794 bin_tree_t *left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3795 bin_tree_t *right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3796 re_token_type_t type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3797 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3798 re_token_t t;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3799 t.type = type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3800 return create_token_tree (dfa, left, right, &t);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3801 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3802
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3803 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3804 create_token_tree (dfa, left, right, token)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3805 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3806 bin_tree_t *left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3807 bin_tree_t *right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3808 const re_token_t *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3809 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3810 bin_tree_t *tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3811 if (BE (dfa->str_tree_storage_idx == BIN_TREE_STORAGE_SIZE, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3812 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3813 bin_tree_storage_t *storage = re_malloc (bin_tree_storage_t, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3814
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3815 if (storage == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3816 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3817 storage->next = dfa->str_tree_storage;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3818 dfa->str_tree_storage = storage;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3819 dfa->str_tree_storage_idx = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3820 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3821 tree = &dfa->str_tree_storage->data[dfa->str_tree_storage_idx++];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3822
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3823 tree->parent = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3824 tree->left = left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3825 tree->right = right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3826 tree->token = *token;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3827 tree->token.duplicated = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3828 tree->token.opt_subexp = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3829 tree->first = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3830 tree->next = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3831 tree->node_idx = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3832
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3833 if (left != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3834 left->parent = tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3835 if (right != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3836 right->parent = tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3837 return tree;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3838 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3839
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3840 /* Mark the tree SRC as an optional subexpression.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3841 To be called from preorder or postorder. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3842
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3843 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3844 mark_opt_subexp (extra, node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3845 void *extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3846 bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3847 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3848 int idx = (int) (long) extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3849 if (node->token.type == SUBEXP && node->token.opr.idx == idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3850 node->token.opt_subexp = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3851
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3852 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3853 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3854
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3855 /* Free the allocated memory inside NODE. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3856
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3857 static void
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3858 free_token (re_token_t *node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3859 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3860 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3861 if (node->type == COMPLEX_BRACKET && node->duplicated == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3862 free_charset (node->opr.mbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3863 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3864 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3865 if (node->type == SIMPLE_BRACKET && node->duplicated == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3866 re_free (node->opr.sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3867 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3868
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3869 /* Worker function for tree walking. Free the allocated memory inside NODE
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3870 and its children. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3871
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3872 static reg_errcode_t
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3873 free_tree (void extra, bin_tree_t node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3874 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3875 free_token (&node->token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3876 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3877 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3878
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3879
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3880 /* Duplicate the node SRC, and return new node. This is a preorder
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3881 visit similar to the one implemented by the generic visitor, but
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3882 we need more infrastructure to maintain two parallel trees --- so,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3883 it's easier to duplicate. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3884
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3885 static bin_tree_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3886 duplicate_tree (root, dfa)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3887 const bin_tree_t *root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3888 re_dfa_t *dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3889 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3890 const bin_tree_t *node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3891 bin_tree_t *dup_root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3892 bin_tree_t *p_new = &dup_root, dup_node = root->parent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3893
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3894 for (node = root; ; )
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3895 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3896 /* Create a new tree and link it back to the current parent. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3897 *p_new = create_token_tree (dfa, NULL, NULL, &node->token);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3898 if (*p_new == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3899 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3900 (*p_new)->parent = dup_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3901 (*p_new)->token.duplicated = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3902 dup_node = *p_new;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3903
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3904 /* Go to the left node, or up and to the right. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3905 if (node->left)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3906 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3907 node = node->left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3908 p_new = &dup_node->left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3909 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3910 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3911 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3912 const bin_tree_t *prev = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3913 while (node->right == prev \|\| node->right == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3914 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3915 prev = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3916 node = node->parent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3917 dup_node = dup_node->parent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3918 if (!node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3919 return dup_root;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3920 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3921 node = node->right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3922 p_new = &dup_node->right;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3923 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3924 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3925 }

Mercurial > gnulib

annotate lib/regcomp.c @ 5968:541fed6ae301