octave: liboctave/util/lo-regexp.cc annotate

annotate liboctave/util/lo-regexp.cc @ 29358:0a5b15007766 stable

update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021.

author	John W. Eaton <jwe@octave.org>
date	Wed, 10 Feb 2021 09:52:15 -0500
parents	863ae57eee69
children	7854d5752dd2 d13d090cb03a

rev	line source
27923 bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	1 ////////////////////////////////////////////////////////////////////////
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	2 //
29358 0a5b15007766 update Octave Project Developers copyright for the new year John W. Eaton <jwe@octave.org> parents: 27933 diff changeset	3 // Copyright (C) 2002-2021 The Octave Project Developers
27923 bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	4 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	5 // See the file COPYRIGHT.md in the top-level directory of this
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	6 // distribution or <https://octave.org/copyright/>.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	7 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	8 // This file is part of Octave.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	9 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	10 // Octave is free software: you can redistribute it and/or modify it
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	11 // under the terms of the GNU General Public License as published by
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	12 // the Free Software Foundation, either version 3 of the License, or
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	13 // (at your option) any later version.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	14 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	15 // Octave is distributed in the hope that it will be useful, but
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	16 // WITHOUT ANY WARRANTY; without even the implied warranty of
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	18 // GNU General Public License for more details.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	19 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	20 // You should have received a copy of the GNU General Public License
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	21 // along with Octave; see the file COPYING. If not, see
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	22 // <https://www.gnu.org/licenses/>.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	23 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	24 ////////////////////////////////////////////////////////////////////////
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	25
21724 aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef" John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	26 #if defined (HAVE_CONFIG_H)
21301 40de9f8f23a6 Use '#include "config.h"' rather than <config.h>. Rik <rik@octave.org> parents: 21202 diff changeset	27 # include "config.h"
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	28 #endif
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	29
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	30 #include <list>
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	31 #include <sstream>
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	32 #include <string>
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	33 #include <vector>
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	34
14025 9867be070ee1 use pcre/pcre.h if it is present John W. Eaton <jwe@octave.org> parents: 14024 diff changeset	35 #if defined (HAVE_PCRE_H)
21202 f7121e111991 maint: indent #ifdef blocks in liboctave and src directories. Rik <rik@octave.org> parents: 21136 diff changeset	36 # include <pcre.h>
14025 9867be070ee1 use pcre/pcre.h if it is present John W. Eaton <jwe@octave.org> parents: 14024 diff changeset	37 #elif defined (HAVE_PCRE_PCRE_H)
21202 f7121e111991 maint: indent #ifdef blocks in liboctave and src directories. Rik <rik@octave.org> parents: 21136 diff changeset	38 # include <pcre/pcre.h>
14025 9867be070ee1 use pcre/pcre.h if it is present John W. Eaton <jwe@octave.org> parents: 14024 diff changeset	39 #endif
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	40
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	41 #include "Matrix.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	42 #include "base-list.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	43 #include "lo-error.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	44 #include "oct-locbuf.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	45 #include "quit.h"
16940 99122191d3dd maint: Rename regexp.h to lo-regexp.h, regexp.cc to lo-regexp.cc in liboctave. Rik <rik@octave.org> parents: 15819 diff changeset	46 #include "lo-regexp.h"
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	47 #include "str-vec.h"
27523 19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	48 #include "unistr-wrappers.h"
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	49
27101 097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	50 namespace octave
097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	51 {
097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	52 // Define the maximum number of retries for a pattern
097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	53 // that possibly results in an infinite recursion.
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	54 #define PCRE_MATCHLIMIT_MAX 10
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	55
27101 097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	56 // FIXME: should this be configurable?
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	57 #define MAXLOOKBEHIND 10
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	58
27101 097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	59 static bool lookbehind_warned = false;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	60
27101 097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	61 // FIXME: don't bother collecting and composing return values
097774bed4ed move some static functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	62 // the user doesn't want.
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	63
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	64 void
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	65 regexp::free (void)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	66 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	67 if (m_data)
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	68 pcre_free (static_cast<pcre *> (m_data));
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	69 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	70
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	71 void
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	72 regexp::compile_internal (void)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	73 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	74 // If we had a previously compiled pattern, release it.
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	75 free ();
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	76
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	77 size_t max_length = MAXLOOKBEHIND;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	78
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	79 size_t pos = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	80 size_t new_pos;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	81 int inames = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	82 std::ostringstream buf;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	83
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	84 while ((new_pos = m_pattern.find ("(?", pos)) != std::string::npos)
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	85 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	86 if (m_pattern.at (new_pos + 2) == '<'
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	87 && !(m_pattern.at (new_pos + 3) == '='
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	88 \|\| m_pattern.at (new_pos + 3) == '!'))
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	89 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	90 // The syntax of named tokens in pcre is "(?P<name>...)" while
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	91 // we need a syntax "(?<name>...)", so fix that here. Also an
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	92 // expression like
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	93 // "(?<first>\w+)\s+(?<last>\w+)\|(?<last>\w+),\s+(?<first>\w+)"
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	94 // should be perfectly legal, while pcre does not allow the same
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	95 // named token name on both sides of the alternative. Also fix
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	96 // that here by replacing name tokens by dummy names, and dealing
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	97 // with the dummy names later.
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	98
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	99 size_t tmp_pos = m_pattern.find_first_of ('>', new_pos);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	100
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	101 if (tmp_pos == std::string::npos)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	102 (*current_liboctave_error_handler)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	103 ("regexp: syntax error in pattern");
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	104
27277 db687716fed6 style fixes: generally aim to break long lines before operators, not after John W. Eaton <jwe@octave.org> parents: 27101 diff changeset	105 std::string tmp_name
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	106 = m_pattern.substr (new_pos+3, tmp_pos-new_pos-3);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	107
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	108 bool found = false;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	109
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	110 for (int i = 0; i < m_names; i++)
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	111 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	112 if (m_named_pats(i) == tmp_name)
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	113 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	114 m_named_idx.resize (dim_vector (inames+1, 1));
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	115 m_named_idx(inames) = i;
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	116 found = true;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	117 break;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	118 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	119 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	120
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	121 if (! found)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	122 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	123 m_named_idx.resize (dim_vector (inames+1, 1));
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	124 m_named_idx(inames) = m_names;
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	125 m_named_pats.append (tmp_name);
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	126 m_names++;
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	127 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	128
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	129 if (new_pos - pos > 0)
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	130 buf << m_pattern.substr (pos, new_pos-pos);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	131 if (inames < 10)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	132 buf << "(?P<n00" << inames++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	133 else if (inames < 100)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	134 buf << "(?P<n0" << inames++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	135 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	136 buf << "(?P<n" << inames++;
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	137
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	138 pos = tmp_pos;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	139 }
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	140 else if (m_pattern.at (new_pos + 2) == '<')
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	141 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	142 // Find lookbehind operators of arbitrary length (ie like
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	143 // "(?<=[a-z]*)") and replace with a maximum length operator
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	144 // as PCRE can not yet handle arbitrary length lookahead
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	145 // operators. Use the string length as the maximum length to
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	146 // avoid issues.
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	147
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	148 int brackets = 1;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	149 size_t tmp_pos1 = new_pos + 2;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	150 size_t tmp_pos2 = tmp_pos1;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	151
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	152 while (tmp_pos1 < m_pattern.length () && brackets > 0)
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	153 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	154 char ch = m_pattern.at (tmp_pos1);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	155
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	156 if (ch == '(')
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	157 brackets++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	158 else if (ch == ')')
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	159 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	160 if (brackets > 1)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	161 tmp_pos2 = tmp_pos1;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	162
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	163 brackets--;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	164 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	165
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	166 tmp_pos1++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	167 }
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	168
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	169 if (brackets != 0)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	170 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	171 buf << m_pattern.substr (pos, new_pos - pos) << "(?";
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	172 pos = new_pos + 2;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	173 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	174 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	175 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	176 size_t tmp_pos3 = m_pattern.find_first_of ("*+", tmp_pos2);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	177
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	178 if (tmp_pos3 != std::string::npos && tmp_pos3 < tmp_pos1)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	179 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	180 if (! lookbehind_warned)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	181 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	182 lookbehind_warned = true;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	183 (*current_liboctave_warning_with_id_handler)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	184 ("Octave:regexp-lookbehind-limit",
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	185 "%s: arbitrary length lookbehind patterns are only supported up to length %d",
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	186 m_who.c_str (), MAXLOOKBEHIND);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	187 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	188
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	189 buf << m_pattern.substr (pos, new_pos - pos) << '(';
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	190
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	191 size_t i;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	192
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	193 if (m_pattern.at (tmp_pos3) == '*')
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	194 i = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	195 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	196 i = 1;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	197
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	198 for (; i < max_length + 1; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	199 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	200 buf << m_pattern.substr (new_pos, tmp_pos3 - new_pos)
23807 336f89b6208b Use character literals 'c' rather than string literals "c" when possible. Rik <rik@octave.org> parents: 23795 diff changeset	201 << '{' << i << '}';
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	202 buf << m_pattern.substr (tmp_pos3 + 1,
27933 863ae57eee69 maint: Use Octave coding conventions in liboctave/ Rik <rik@octave.org> parents: 27923 diff changeset	203 tmp_pos1 - tmp_pos3 - 1);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	204 if (i != max_length)
23807 336f89b6208b Use character literals 'c' rather than string literals "c" when possible. Rik <rik@octave.org> parents: 23795 diff changeset	205 buf << '\|';
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	206 }
23807 336f89b6208b Use character literals 'c' rather than string literals "c" when possible. Rik <rik@octave.org> parents: 23795 diff changeset	207 buf << ')';
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	208 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	209 else
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	210 buf << m_pattern.substr (pos, tmp_pos1 - pos);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	211
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	212 pos = tmp_pos1;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	213 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	214 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	215 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	216 {
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	217 buf << m_pattern.substr (pos, new_pos - pos) << "(?";
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	218 pos = new_pos + 2;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	219 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	220
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	221 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	222
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	223 buf << m_pattern.substr (pos);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	224
25103 078b795c5219 maint: style check C++ ahead of 4.4 release. Rik <rik@octave.org> parents: 25054 diff changeset	225 // Replace NULLs with escape sequence because conversion function c_str()
24741 00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	226 // will terminate string early at embedded NULLs.
00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	227 std::string buf_str = buf.str ();
00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	228 while ((pos = buf_str.find ('\0')) != std::string::npos)
00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	229 buf_str.replace (pos, 1, "\\000");
00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	230
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	231 const char *err;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	232 int erroffset;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	233
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	234 int pcre_options
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	235 = ( (m_options.case_insensitive () ? PCRE_CASELESS : 0)
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	236 \| (m_options.dotexceptnewline () ? 0 : PCRE_DOTALL)
3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	237 \| (m_options.lineanchors () ? PCRE_MULTILINE : 0)
27565 74173f04d2a3 Use syntax for UTF-8 mode with PCRE that is used in the configure test (bug #35910). Markus Mützel <markus.muetzel@gmx.de> parents: 27523 diff changeset	238 \| (m_options.freespacing () ? PCRE_EXTENDED : 0)
74173f04d2a3 Use syntax for UTF-8 mode with PCRE that is used in the configure test (bug #35910). Markus Mützel <markus.muetzel@gmx.de> parents: 27523 diff changeset	239 \| PCRE_UTF8);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	240
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	241 m_data = pcre_compile (buf_str.c_str (), pcre_options,
27933 863ae57eee69 maint: Use Octave coding conventions in liboctave/ Rik <rik@octave.org> parents: 27923 diff changeset	242 &err, &erroffset, nullptr);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	243
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	244 if (! m_data)
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	245 (*current_liboctave_error_handler)
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	246 ("%s: %s at position %d of expression", m_who.c_str (), err, erroffset);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	247 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	248
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	249 regexp::match_data
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	250 regexp::match (const std::string& buffer)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	251 {
27523 19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	252 // check if input is valid utf-8
19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	253 const uint8_t buf_str = reinterpret_cast<const uint8_t > (buffer.c_str ());
19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	254 if (octave_u8_check_wrapper (buf_str, buffer.length ()))
19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	255 (*current_liboctave_error_handler)
19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	256 ("%s: the input string is invalid UTF-8", m_who.c_str ());
19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	257
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	258 regexp::match_data retval;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	259
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	260 std::list<regexp::match_element> lst;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	261
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	262 int subpatterns;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	263 int namecount;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	264 int nameentrysize;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	265 char *nametable;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	266 size_t idx = 0;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	267
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	268 pcre re = static_cast<pcre > (m_data);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	269
23795 980f39c3ab90 Use C++11 nullptr rather than 0 in code (bug #51565). Rik <rik@octave.org> parents: 23302 diff changeset	270 pcre_fullinfo (re, nullptr, PCRE_INFO_CAPTURECOUNT, &subpatterns);
980f39c3ab90 Use C++11 nullptr rather than 0 in code (bug #51565). Rik <rik@octave.org> parents: 23302 diff changeset	271 pcre_fullinfo (re, nullptr, PCRE_INFO_NAMECOUNT, &namecount);
980f39c3ab90 Use C++11 nullptr rather than 0 in code (bug #51565). Rik <rik@octave.org> parents: 23302 diff changeset	272 pcre_fullinfo (re, nullptr, PCRE_INFO_NAMEENTRYSIZE, &nameentrysize);
980f39c3ab90 Use C++11 nullptr rather than 0 in code (bug #51565). Rik <rik@octave.org> parents: 23302 diff changeset	273 pcre_fullinfo (re, nullptr, PCRE_INFO_NAMETABLE, &nametable);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	274
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	275 OCTAVE_LOCAL_BUFFER (int, ovector, (subpatterns+1)*3);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	276 OCTAVE_LOCAL_BUFFER (int, nidx, namecount);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	277
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	278 for (int i = 0; i < namecount; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	279 {
23302 78cf75ffd382 maint: tweak readability of code in lo-regexp.cc. Rik <rik@octave.org> parents: 23084 diff changeset	280 // Index of subpattern in first two bytes of name (MSB first).
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	281 // Extract index.
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	282 nidx[i] = (static_cast<int> (nametable[i*nameentrysize])) << 8
22402 4caa7b28d183 maint: Style check C++ code in liboctave/ Rik <rik@octave.org> parents: 22333 diff changeset	283 \| static_cast<int> (nametable[i*nameentrysize+1]);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	284 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	285
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	286 while (true)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	287 {
22860 0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	288 octave_quit ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	289
23795 980f39c3ab90 Use C++11 nullptr rather than 0 in code (bug #51565). Rik <rik@octave.org> parents: 23302 diff changeset	290 int matches = pcre_exec (re, nullptr, buffer.c_str (),
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	291 buffer.length (), idx,
27523 19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	292 PCRE_NO_UTF8_CHECK \| (idx ? PCRE_NOTBOL : 0),
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	293 ovector, (subpatterns+1)*3);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	294
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	295 if (matches == PCRE_ERROR_MATCHLIMIT)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	296 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	297 // Try harder; start with default value for MATCH_LIMIT
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	298 // and increase it.
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	299 (*current_liboctave_warning_with_id_handler)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	300 ("Octave:regexp-match-limit",
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	301 "your pattern caused PCRE to hit its MATCH_LIMIT; trying harder now, but this will be slow");
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	302
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	303 pcre_extra pe;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	304
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	305 pcre_config (PCRE_CONFIG_MATCH_LIMIT,
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	306 static_cast<void *> (&pe.match_limit));
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	307
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	308 pe.flags = PCRE_EXTRA_MATCH_LIMIT;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	309
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	310 int i = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	311 while (matches == PCRE_ERROR_MATCHLIMIT
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	312 && i++ < PCRE_MATCHLIMIT_MAX)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	313 {
22860 0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	314 octave_quit ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	315
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	316 pe.match_limit *= 10;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	317 matches = pcre_exec (re, &pe, buffer.c_str (),
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	318 buffer.length (), idx,
27523 19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	319 PCRE_NO_UTF8_CHECK
19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	320 \| (idx ? PCRE_NOTBOL : 0),
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	321 ovector, (subpatterns+1)*3);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	322 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	323 }
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	324
27523 19ad9150dd69 Check if input to regexp is valid UTF-8 is faster than PCRE's checks (bug #57064). Markus Mützel <markus.muetzel@gmx.de> parents: 27379 diff changeset	325 if (matches < 0 && matches != PCRE_ERROR_NOMATCH)
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	326 (*current_liboctave_error_handler)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	327 ("%s: internal error calling pcre_exec; "
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	328 "error code from pcre_exec is %i", m_who.c_str (), matches);
21136 7cac4e7458f2 maint: clean up code around calls to current_liboctave_error_handler. Rik <rik@octave.org> parents: 20955 diff changeset	329
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	330 if (matches == PCRE_ERROR_NOMATCH)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	331 break;
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	332 else if (ovector[0] >= ovector[1] && ! m_options.emptymatch ())
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	333 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	334 // Zero length match. Skip to next char.
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	335 idx = ovector[0] + 1;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	336 if (idx < buffer.length ())
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	337 continue;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	338 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	339 break;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	340 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	341 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	342 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	343 int pos_match = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	344 Matrix token_extents (matches-1, 2);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	345
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	346 for (int i = 1; i < matches; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	347 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	348 if (ovector[2i] >= 0 && ovector[2i+1] > 0
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	349 && (i == 1 \|\| ovector[2i] != ovector[2i-2]
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	350 \|\| ovector[2i-1] != ovector[2i+1]))
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	351 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	352 token_extents(pos_match,0) = double (ovector[2*i]+1);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	353 token_extents(pos_match++,1) = double (ovector[2*i+1]);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	354 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	355 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	356
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	357 token_extents.resize (pos_match, 2);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	358
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	359 double start = double (ovector[0]+1);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	360 double end = double (ovector[1]);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	361
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	362 const char **listptr;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	363 int status = pcre_get_substring_list (buffer.c_str (), ovector,
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	364 matches, &listptr);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	365
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	366 if (status == PCRE_ERROR_NOMEMORY)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	367 (*current_liboctave_error_handler)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	368 ("%s: cannot allocate memory in pcre_get_substring_list",
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	369 m_who.c_str ());
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	370
24741 00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	371 // Must use explicit length constructor as match can contain '\0'.
00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	372 std::string match_string = std::string (*listptr, end - start + 1);
00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	373
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	374 string_vector tokens (pos_match);
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	375 string_vector named_tokens (m_names);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	376 int pos_offset = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	377 pos_match = 0;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	378
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	379 for (int i = 1; i < matches; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	380 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	381 if (ovector[2i] >= 0 && ovector[2i+1] > 0)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	382 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	383 if (i == 1 \|\| ovector[2i] != ovector[2i-2]
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	384 \|\| ovector[2i-1] != ovector[2i+1])
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	385 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	386 if (namecount > 0)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	387 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	388 // FIXME: Should probably do this with a map()
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	389 // rather than a linear search. However,
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	390 // the number of captured, named expressions
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	391 // is usually pretty small (< 4)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	392 for (int j = 0; j < namecount; j++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	393 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	394 if (nidx[j] == i)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	395 {
24741 00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	396 size_t len = ovector[2i+1] - ovector[2i];
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	397 named_tokens(m_named_idx(j))
27277 db687716fed6 style fixes: generally aim to break long lines before operators, not after John W. Eaton <jwe@octave.org> parents: 27101 diff changeset	398 = std::string (*(listptr+i-pos_offset),
db687716fed6 style fixes: generally aim to break long lines before operators, not after John W. Eaton <jwe@octave.org> parents: 27101 diff changeset	399 len);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	400 break;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	401 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	402 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	403 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	404
24741 00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	405 size_t len = ovector[2i+1] - ovector[2i];
00dfa167c1fe Fix handling of NULL character in regular expressions for Matlab compatibility. Rik <rik@octave.org> parents: 24607 diff changeset	406 tokens(pos_match++) = std::string (*(listptr+i), len);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	407 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	408 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	409 pos_offset++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	410 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	411 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	412
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	413 pcre_free_substring_list (listptr);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	414
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	415 regexp::match_element new_elem (named_tokens, tokens, match_string,
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	416 token_extents, start, end);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	417 lst.push_back (new_elem);
14536 6d5c951ec520 Add 'emptymatch', 'noemptymatch' options to regular expressions. Rik <octave@nomad.inbox5.com> parents: 14506 diff changeset	418
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	419 if (ovector[1] <= ovector[0])
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	420 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	421 // Zero length match. Skip to next char.
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	422 idx = ovector[0] + 1;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	423 if (idx <= buffer.length ())
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	424 continue;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	425 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	426 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	427 idx = ovector[1];
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	428
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	429 if (m_options.once () \|\| idx >= buffer.length ())
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	430 break;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	431 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	432 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	433
27379 3db033e86376 use m_ prefix for data members in most liboctave/util classes John W. Eaton <jwe@octave.org> parents: 27367 diff changeset	434 retval = regexp::match_data (lst, m_named_pats);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	435
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	436 return retval;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	437 }
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	438
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	439 bool
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	440 regexp::is_match (const std::string& buffer)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	441 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	442 regexp::match_data rx_lst = match (buffer);
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	443
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	444 return rx_lst.size () > 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	445 }
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	446
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	447 Array<bool>
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	448 regexp::is_match (const string_vector& buffer)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	449 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	450 octave_idx_type len = buffer.numel ();
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	451
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	452 Array<bool> retval (dim_vector (len, 1));
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	453
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	454 for (octave_idx_type i = 0; i < buffer.numel (); i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	455 retval(i) = is_match (buffer(i));
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	456
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	457 return retval;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	458 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	459
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	460 // Declare rep_token_t used in processing replacement string
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	461 typedef struct
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	462 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	463 size_t pos;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	464 int num;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	465 } rep_token_t;
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	466
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	467 std::string
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	468 regexp::replace (const std::string& buffer, const std::string& replacement)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	469 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	470 std::string retval;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	471
25342 416856765a55 be more careful with using auto in place of explicit const iterator decls John W. Eaton <jwe@octave.org> parents: 25337 diff changeset	472 const regexp::match_data rx_lst = match (buffer);
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	473
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	474 size_t num_matches = rx_lst.size ();
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	475
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	476 if (num_matches == 0)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	477 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	478 retval = buffer;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	479 return retval;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	480 }
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	481
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	482 // Identify replacement tokens; build a vector of group numbers in
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	483 // the replacement string so that we can quickly calculate the size
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	484 // of the replacement.
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	485
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	486 // FIXME: All code assumes that only 10 tokens ($0-$9) exist.
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	487 // $11 represents $1 followed by the character '1' rather than
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	488 // the eleventh capture buffer.
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	489
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	490 std::string repstr = replacement;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	491 std::vector<rep_token_t> tokens;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	492 tokens.reserve (5); // Reserve memory for 5 pattern replacements
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	493
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	494 for (size_t i=0; i < repstr.size (); i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	495 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	496 if (repstr[i] == '\\')
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	497 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	498 if (i < repstr.size () - 1 && repstr[i+1] == '$')
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	499 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	500 repstr.erase (i,1); // erase backslash
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	501 i++; // skip over '$'
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	502 continue;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	503 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	504 if (i < repstr.size () - 1 && repstr[i+1] == '\\')
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	505 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	506 repstr.erase (i,1); // erase 1st backslash
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	507 continue;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	508 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	509 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	510 else if (repstr[i] == '$')
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	511 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	512 if (i < repstr.size () - 1 && isdigit (repstr[i+1]))
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	513 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	514 rep_token_t tmp_token;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	515
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	516 tmp_token.pos = i;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	517 tmp_token.num = repstr[i+1]-'0';
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	518 tokens.push_back (tmp_token);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	519 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	520 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	521 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	522
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	523 std::string rep;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	524 int num_tokens = tokens.size ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	525
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	526 if (num_tokens > 0)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	527 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	528 // Determine replacement length
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	529 const size_t replen = repstr.size () - 2*num_tokens;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	530 int delta = 0;
25337 3ff9192b676e use auto keyword to declare iterator variables where possible John W. Eaton <jwe@octave.org> parents: 25166 diff changeset	531 auto p = rx_lst.begin ();
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	532 for (size_t i = 0; i < num_matches; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	533 {
22860 0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	534 octave_quit ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	535
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	536 double start = p->start ();
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	537 double end = p->end ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	538
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	539 const Matrix pairs (p->token_extents ());
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	540 size_t pairlen = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	541 for (int j = 0; j < num_tokens; j++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	542 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	543 if (tokens[j].num == 0)
24605 3e17190dfaea Fix incorrect regexprep on ARM platforms (bug #52810). Rik <rik@octave.org> parents: 23083 diff changeset	544 pairlen += static_cast<size_t> (end - start + 1);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	545 else if (tokens[j].num <= pairs.rows ())
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	546 pairlen += static_cast<size_t> (pairs(tokens[j].num-1,1)
24605 3e17190dfaea Fix incorrect regexprep on ARM platforms (bug #52810). Rik <rik@octave.org> parents: 23083 diff changeset	547 - pairs(tokens[j].num-1,0)
3e17190dfaea Fix incorrect regexprep on ARM platforms (bug #52810). Rik <rik@octave.org> parents: 23083 diff changeset	548 + 1);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	549 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	550 delta += (static_cast<int> (replen + pairlen)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	551 - static_cast<int> (end - start + 1));
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	552 p++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	553 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	554
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	555 // Build replacement string
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	556 rep.reserve (buffer.size () + delta);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	557 size_t from = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	558 p = rx_lst.begin ();
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	559 for (size_t i = 0; i < num_matches; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	560 {
22860 0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	561 octave_quit ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	562
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	563 double start = p->start ();
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	564 double end = p->end ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	565
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	566 const Matrix pairs (p->token_extents ());
24605 3e17190dfaea Fix incorrect regexprep on ARM platforms (bug #52810). Rik <rik@octave.org> parents: 23083 diff changeset	567 rep.append (&buffer[from], static_cast<size_t> (start - 1 - from));
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	568 from = static_cast<size_t> (end);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	569
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	570 size_t cur_pos = 0;
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	571
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	572 for (int j = 0; j < num_tokens; j++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	573 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	574 rep.append (&repstr[cur_pos], (tokens[j].pos) - cur_pos);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	575 cur_pos = tokens[j].pos+2;
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	576
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	577 int k = tokens[j].num;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	578 if (k == 0)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	579 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	580 // replace with entire match
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	581 rep.append (&buffer[static_cast<size_t> (end - 1)],
24605 3e17190dfaea Fix incorrect regexprep on ARM platforms (bug #52810). Rik <rik@octave.org> parents: 23083 diff changeset	582 static_cast<size_t> (end - start + 1));
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	583 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	584 else if (k <= pairs.rows ())
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	585 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	586 // replace with group capture
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	587 rep.append (&buffer[static_cast<size_t> (pairs(k-1,0)-1)],
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	588 static_cast<size_t> (pairs(k-1,1)
24605 3e17190dfaea Fix incorrect regexprep on ARM platforms (bug #52810). Rik <rik@octave.org> parents: 23083 diff changeset	589 - pairs(k-1,0) + 1));
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	590 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	591 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	592 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	593 // replace with nothing
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	594 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	595 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	596 if (cur_pos < repstr.size ())
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	597 rep.append (&repstr[cur_pos], repstr.size () - cur_pos);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	598
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	599 p++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	600 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	601 rep.append (&buffer[from], buffer.size () - from);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	602 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	603 else
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	604 {
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	605 // Determine repstr length
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	606 const size_t replen = repstr.size ();
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	607 int delta = 0;
25337 3ff9192b676e use auto keyword to declare iterator variables where possible John W. Eaton <jwe@octave.org> parents: 25166 diff changeset	608 auto p = rx_lst.begin ();
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	609 for (size_t i = 0; i < num_matches; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	610 {
22860 0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	611 octave_quit ();
0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	612
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	613 delta += static_cast<int> (replen)
22402 4caa7b28d183 maint: Style check C++ code in liboctave/ Rik <rik@octave.org> parents: 22333 diff changeset	614 - static_cast<int> (p->end () - p->start () + 1);
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	615 p++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	616 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	617
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	618 // Build replacement string
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	619 rep.reserve (buffer.size () + delta);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	620 size_t from = 0;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	621 p = rx_lst.begin ();
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	622 for (size_t i = 0; i < num_matches; i++)
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	623 {
22860 0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	624 octave_quit ();
0b1e25cc4457 eliminate use of OCTAVE_QUIT macro in C++ sources John W. Eaton <jwe@octave.org> parents: 22755 diff changeset	625
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	626 rep.append (&buffer[from],
24605 3e17190dfaea Fix incorrect regexprep on ARM platforms (bug #52810). Rik <rik@octave.org> parents: 23083 diff changeset	627 static_cast<size_t> (p->start () - 1 - from));
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	628 from = static_cast<size_t> (p->end ());
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	629 rep.append (repstr);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	630 p++;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	631 }
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	632 rep.append (&buffer[from], buffer.size () - from);
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	633 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	634
22333 2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	635 retval = rep;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	636 return retval;
2758af148ced move base_list and regexp classes to octave namespace John W. Eaton <jwe@octave.org> parents: 22323 diff changeset	637 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	638 }

Mercurial > octave

annotate liboctave/util/lo-regexp.cc @ 29358:0a5b15007766 stable