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

annotate liboctave/util/lo-regexp.cc @ 20955:77f5591878bf

maint: Use '! expr' rather than '!expr' to conform to coding guidelines. * dialog.h, documentation-dock-widget.cc, files-dock-widget.cc, find-files-dialog.cc, file-editor-tab.cc, file-editor.cc, find-dialog.cc, octave-qscintilla.cc, main-window.cc, parser.cc, resource-manager.cc, workspace-view.cc, data.cc, dlmread.cc, gl-render.cc, gl2ps-renderer.cc, graphics.cc, graphics.in.h, ls-hdf5.cc, ls-mat5.cc, ls-oct-binary.cc, lsode.cc, mappers.cc, pt-jit.cc, regexp.cc, spparms.cc, symtab.h, utils.cc, zfstream.cc, __eigs__.cc, __glpk__.cc, __init_fltk__.cc, ccolamd.cc, colamd.cc, ov-base-diag.cc, ov-base-int.cc, ov-base-sparse.cc, ov-bool-mat.cc, ov-bool-sparse.cc, ov-bool.cc, ov-class.cc, ov-cx-sparse.cc, ov-fcn-handle.cc, ov-fcn-inline.cc, ov-java.cc, ov-perm.cc, ov-re-sparse.cc, ov-str-mat.cc, ov-struct.cc, ov.cc, pt-mat.cc, Array.cc, Array.h, CMatrix.cc, CSparse.cc, MatrixType.cc, PermMatrix.cc, Sparse.h, dMatrix.cc, dSparse.cc, fCMatrix.cc, fMatrix.cc, idx-vector.cc, CollocWt.h, SparseCmplxLU.cc, SparseCmplxQR.cc, SparseQR.cc, SparsedbleLU.cc, base-qr.cc, eigs-base.cc, oct-fftw.cc, randmtzig.c, sparse-dmsolve.cc, kpse.cc, lo-regexp.cc, oct-locbuf.h, url-transfer.cc, url-transfer.h, bitset.m, interp2.m, __isequal__.m, inpolygon.m, questdlg.m, help.m, compare_versions.m, substruct.m, configure_make.m, whitebg.m, __marching_cube__.m, struct2hdl.m, polyfit.m, spline.m, unique.m, svds.m, ellipke.m, binoinv.m, hygepdf.m, nbininv.m, poissinv.m, tcdf.m, unidcdf.m, unidpdf.m, dec2base.m, assert.m, weekday.m, mkoctfile.in.cc: maint: Use '! expr' rather than '!expr' to conform to coding guidelines.

author	Rik <rik@octave.org>
date	Sun, 20 Dec 2015 10:15:02 -0800
parents	a9574e3c6e9e
children	7cac4e7458f2

rev	line source
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	1 /*
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	2
14138 72c96de7a403 maint: update copyright notices for 2012 John W. Eaton <jwe@octave.org> parents: 14057 diff changeset	3 Copyright (C) 2012 John W. Eaton
19697 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 19410 diff changeset	4 Copyright (C) 2005-2015 David Bateman
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	5 Copyright (C) 2002-2005 Paul Kienzle
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	6
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	7 This file is part of Octave.
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	8
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	9 Octave is free software; you can redistribute it and/or modify it
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	10 under the terms of the GNU General Public License as published by the
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	11 Free Software Foundation; either version 3 of the License, or (at your
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	12 option) any later version.
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	13
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	14 Octave is distributed in the hope that it will be useful, but WITHOUT
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	17 for more details.
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	18
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	19 You should have received a copy of the GNU General Public License
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	20 along with Octave; see the file COPYING. If not, see
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	21 <http://www.gnu.org/licenses/>.
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	22
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	23 */
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	24
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	25 #ifdef HAVE_CONFIG_H
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	26 #include <config.h>
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	27 #endif
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	28
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	29 #include <list>
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	30 #include <sstream>
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	31 #include <string>
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	32 #include <vector>
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	33
14025 9867be070ee1 use pcre/pcre.h if it is present John W. Eaton <jwe@octave.org> parents: 14024 diff changeset	34 #if defined (HAVE_PCRE_H)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	35 #include <pcre.h>
14025 9867be070ee1 use pcre/pcre.h if it is present John W. Eaton <jwe@octave.org> parents: 14024 diff changeset	36 #elif defined (HAVE_PCRE_PCRE_H)
9867be070ee1 use pcre/pcre.h if it is present John W. Eaton <jwe@octave.org> parents: 14024 diff changeset	37 #include <pcre/pcre.h>
9867be070ee1 use pcre/pcre.h if it is present John W. Eaton <jwe@octave.org> parents: 14024 diff changeset	38 #endif
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	39
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	40 #include "Matrix.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	41 #include "base-list.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	42 #include "lo-error.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	43 #include "oct-locbuf.h"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	44 #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	45 #include "lo-regexp.h"
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	46 #include "str-vec.h"
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	47
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	48 // Define the maximum number of retries for a pattern
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	49 // that possibly results in an infinite recursion.
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	50 #define PCRE_MATCHLIMIT_MAX 10
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	51
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	52 // FIXME: should this be configurable?
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	53 #define MAXLOOKBEHIND 10
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	54
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	55 static bool lookbehind_warned = false;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	56
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	57 // FIXME: don't bother collecting and composing return values
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	58 // the user doesn't want.
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	59
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	60 void
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	61 regexp::free (void)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	62 {
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	63 if (data)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	64 pcre_free (static_cast<pcre *> (data));
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	65 }
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	66
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	67 void
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	68 regexp::compile_internal (void)
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	69 {
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	70 // If we had a previously compiled pattern, release it.
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	71 free ();
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	72
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	73 size_t max_length = MAXLOOKBEHIND;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	74
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	75 size_t pos = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	76 size_t new_pos;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	77 int inames = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	78 std::ostringstream buf;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	79
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	80 while ((new_pos = pattern.find ("(?", pos)) != std::string::npos)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	81 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	82 if (pattern.at (new_pos + 2) == '<'
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	83 && !(pattern.at (new_pos + 3) == '='
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	84 \|\| pattern.at (new_pos + 3) == '!'))
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	85 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	86 // The syntax of named tokens in pcre is "(?P<name>...)" while
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	87 // we need a syntax "(?<name>...)", so fix that here. Also an
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	88 // expression like
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	89 // "(?<first>\w+)\s+(?<last>\w+)\|(?<last>\w+),\s+(?<first>\w+)"
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	90 // should be perfectly legal, while pcre does not allow the same
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	91 // named token name on both sides of the alternative. Also fix
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	92 // that here by replacing name tokens by dummy names, and dealing
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	93 // with the dummy names later.
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	94
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	95 size_t tmp_pos = pattern.find_first_of ('>', new_pos);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	96
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	97 if (tmp_pos == std::string::npos)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	98 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	99 (*current_liboctave_error_handler)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	100 ("regexp: syntax error in pattern");
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	101 return;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	102 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	103
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	104 std::string tmp_name =
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	105 pattern.substr (new_pos+3, tmp_pos-new_pos-3);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	106
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	107 bool found = false;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	108
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	109 for (int i = 0; i < nnames; i++)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	110 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	111 if (named_pats(i) == tmp_name)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	112 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	113 named_idx.resize (dim_vector (inames+1, 1));
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	114 named_idx(inames) = i;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	115 found = true;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	116 break;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	117 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	118 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	119
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	120 if (! found)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	121 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	122 named_idx.resize (dim_vector (inames+1, 1));
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	123 named_idx(inames) = nnames;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	124 named_pats.append (tmp_name);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	125 nnames++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	126 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	127
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	128 if (new_pos - pos > 0)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	129 buf << pattern.substr (pos, new_pos-pos);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	130 if (inames < 10)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	131 buf << "(?P<n00" << inames++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	132 else if (inames < 100)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	133 buf << "(?P<n0" << inames++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	134 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	135 buf << "(?P<n" << inames++;
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	136
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	137 pos = tmp_pos;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	138 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	139 else if (pattern.at (new_pos + 2) == '<')
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	140 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	141 // Find lookbehind operators of arbitrary length (ie like
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	142 // "(?<=[a-z]*)") and replace with a maximum length operator
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	143 // as PCRE can not yet handle arbitrary length lookahead
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	144 // operators. Use the string length as the maximum length to
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	145 // avoid issues.
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	146
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	147 int brackets = 1;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	148 size_t tmp_pos1 = new_pos + 2;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	149 size_t tmp_pos2 = tmp_pos1;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	150
14494 b472596cd7b9 Stop segfault when regular expression contains malformed lookbehind atom (bug #35961) Rik <octave@nomad.inbox5.com> parents: 14452 diff changeset	151 while (tmp_pos1 < pattern.length () && brackets > 0)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	152 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	153 char ch = pattern.at (tmp_pos1);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	154
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	155 if (ch == '(')
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	156 brackets++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	157 else if (ch == ')')
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	158 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	159 if (brackets > 1)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	160 tmp_pos2 = tmp_pos1;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	161
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	162 brackets--;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	163 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	164
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	165 tmp_pos1++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	166 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	167
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	168 if (brackets != 0)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	169 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	170 buf << pattern.substr (pos, new_pos - pos) << "(?";
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	171 pos = new_pos + 2;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	172 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	173 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	174 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	175 size_t tmp_pos3 = pattern.find_first_of ("*+", tmp_pos2);
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	176
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	177 if (tmp_pos3 != std::string::npos && tmp_pos3 < tmp_pos1)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	178 {
20955 77f5591878bf maint: Use '! expr' rather than '!expr' to conform to coding guidelines. Rik <rik@octave.org> parents: 20232 diff changeset	179 if (! lookbehind_warned)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	180 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	181 lookbehind_warned = true;
19410 95c533ed464b use warning IDs for all warnings in liboctave John W. Eaton <jwe@octave.org> parents: 17769 diff changeset	182 (*current_liboctave_warning_with_id_handler)
95c533ed464b use warning IDs for all warnings in liboctave John W. Eaton <jwe@octave.org> parents: 17769 diff changeset	183 ("Octave:regexp-lookbehind-limit",
95c533ed464b use warning IDs for all warnings in liboctave John W. Eaton <jwe@octave.org> parents: 17769 diff changeset	184 "%s: arbitrary length lookbehind patterns are only supported up to length %d",
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	185 who.c_str (), MAXLOOKBEHIND);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	186 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	187
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	188 buf << pattern.substr (pos, new_pos - pos) << "(";
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	189
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	190 size_t i;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	191
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	192 if (pattern.at (tmp_pos3) == '*')
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	193 i = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	194 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	195 i = 1;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	196
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	197 for (; i < max_length + 1; i++)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	198 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	199 buf << pattern.substr (new_pos, tmp_pos3 - new_pos)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	200 << "{" << i << "}";
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	201 buf << pattern.substr (tmp_pos3 + 1,
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	202 tmp_pos1 - tmp_pos3 - 1);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	203 if (i != max_length)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	204 buf << "\|";
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	205 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	206 buf << ")";
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	207 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	208 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	209 buf << pattern.substr (pos, tmp_pos1 - pos);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	210
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	211 pos = tmp_pos1;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	212 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	213 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	214 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	215 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	216 buf << pattern.substr (pos, new_pos - pos) << "(?";
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	217 pos = new_pos + 2;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	218 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	219
7784 d3a7882fa0b3 style fixes John W. Eaton <jwe@octave.org> parents: 7779 diff changeset	220 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	221
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	222 buf << pattern.substr (pos);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	223
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	224 const char *err;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	225 int erroffset;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	226 std::string buf_str = buf.str ();
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	227
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	228 int pcre_options
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	229 = ((options.case_insensitive () ? PCRE_CASELESS : 0)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	230 \| (options.dotexceptnewline () ? 0 : PCRE_DOTALL)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	231 \| (options.lineanchors () ? PCRE_MULTILINE : 0)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	232 \| (options.freespacing () ? PCRE_EXTENDED : 0));
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	233
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	234 data = pcre_compile (buf_str.c_str (), pcre_options, &err, &erroffset, 0);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	235
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	236 if (! data)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	237 (*current_liboctave_error_handler)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	238 ("%s: %s at position %d of expression", who.c_str (),
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	239 err, erroffset);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	240 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	241
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	242 regexp::match_data
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	243 regexp::match (const std::string& buffer)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	244 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	245 regexp::match_data retval;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	246
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	247 std::list<regexp::match_element> lst;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	248
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	249 int subpatterns;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	250 int namecount;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	251 int nameentrysize;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	252 char *nametable;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	253 size_t idx = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	254
19739 3fa35defe495 Adjust spacing of static_cast<> calls to follow Octave coding conventions. Rik <rik@octave.org> parents: 19697 diff changeset	255 pcre re = static_cast<pcre > (data);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	256
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	257 pcre_fullinfo (re, 0, PCRE_INFO_CAPTURECOUNT, &subpatterns);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	258 pcre_fullinfo (re, 0, PCRE_INFO_NAMECOUNT, &namecount);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	259 pcre_fullinfo (re, 0, PCRE_INFO_NAMEENTRYSIZE, &nameentrysize);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	260 pcre_fullinfo (re, 0, PCRE_INFO_NAMETABLE, &nametable);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	261
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	262 OCTAVE_LOCAL_BUFFER (int, ovector, (subpatterns+1)*3);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	263 OCTAVE_LOCAL_BUFFER (int, nidx, namecount);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	264
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	265 for (int i = 0; i < namecount; i++)
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	266 {
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	267 // Index of subpattern in first two bytes MSB first of name.
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	268 // Extract index.
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	269 nidx[i] = (static_cast<int> (nametable[i*nameentrysize])) << 8
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	270 \| static_cast<int> (nametable[i*nameentrysize+1]);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	271 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	272
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	273 while (true)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	274 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	275 OCTAVE_QUIT;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	276
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	277 int matches = pcre_exec (re, 0, buffer.c_str (),
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	278 buffer.length (), idx,
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	279 (idx ? PCRE_NOTBOL : 0),
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	280 ovector, (subpatterns+1)*3);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	281
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	282 if (matches == PCRE_ERROR_MATCHLIMIT)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	283 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	284 // Try harder; start with default value for MATCH_LIMIT
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	285 // and increase it.
19410 95c533ed464b use warning IDs for all warnings in liboctave John W. Eaton <jwe@octave.org> parents: 17769 diff changeset	286 (*current_liboctave_warning_with_id_handler)
95c533ed464b use warning IDs for all warnings in liboctave John W. Eaton <jwe@octave.org> parents: 17769 diff changeset	287 ("Octave:regexp-match-limit",
95c533ed464b use warning IDs for all warnings in liboctave John W. Eaton <jwe@octave.org> parents: 17769 diff changeset	288 "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	289
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	290 pcre_extra pe;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	291
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	292 pcre_config (PCRE_CONFIG_MATCH_LIMIT,
19739 3fa35defe495 Adjust spacing of static_cast<> calls to follow Octave coding conventions. Rik <rik@octave.org> parents: 19697 diff changeset	293 static_cast<void *> (&pe.match_limit));
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	294
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	295 pe.flags = PCRE_EXTRA_MATCH_LIMIT;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	296
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	297 int i = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	298 while (matches == PCRE_ERROR_MATCHLIMIT
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	299 && i++ < PCRE_MATCHLIMIT_MAX)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	300 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	301 OCTAVE_QUIT;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	302
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	303 pe.match_limit *= 10;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	304 matches = pcre_exec (re, &pe, buffer.c_str (),
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	305 buffer.length (), idx,
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	306 (idx ? PCRE_NOTBOL : 0),
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	307 ovector, (subpatterns+1)*3);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	308 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	309 }
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	310
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	311 if (matches < 0 && matches != PCRE_ERROR_NOMATCH)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	312 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	313 (*current_liboctave_error_handler)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	314 ("%s: internal error calling pcre_exec; error code from pcre_exec is %i",
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	315 who.c_str (), matches);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	316 return retval;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	317 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	318 else if (matches == PCRE_ERROR_NOMATCH)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	319 break;
14536 6d5c951ec520 Add 'emptymatch', 'noemptymatch' options to regular expressions. Rik <octave@nomad.inbox5.com> parents: 14506 diff changeset	320 else if (ovector[1] <= ovector[0] && ! options.emptymatch ())
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	321 {
14536 6d5c951ec520 Add 'emptymatch', 'noemptymatch' options to regular expressions. Rik <octave@nomad.inbox5.com> parents: 14506 diff changeset	322 // Zero length match. Skip to next char.
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	323 idx = ovector[0] + 1;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	324 if (idx < buffer.length ())
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	325 continue;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	326 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	327 break;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	328 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	329 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	330 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	331 int pos_match = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	332 Matrix token_extents (matches-1, 2);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	333
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	334 for (int i = 1; i < matches; i++)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	335 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	336 if (ovector[2i] >= 0 && ovector[2i+1] > 0
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	337 && (i == 1 \|\| ovector[2i] != ovector[2i-2]
14455 c57f9c911053 regexp.cc: Remove redundant condition in if statement Rik <octave@nomad.inbox5.com> parents: 14452 diff changeset	338 \|\| ovector[2i-1] != ovector[2i+1]))
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	339 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	340 token_extents(pos_match,0) = double (ovector[2*i]+1);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	341 token_extents(pos_match++,1) = double (ovector[2*i+1]);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	342 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	343 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	344
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	345 token_extents.resize (pos_match, 2);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	346
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	347 double start = double (ovector[0]+1);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	348 double end = double (ovector[1]);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	349
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	350 const char **listptr;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	351 int status = pcre_get_substring_list (buffer.c_str (), ovector,
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	352 matches, &listptr);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	353
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	354 if (status == PCRE_ERROR_NOMEMORY)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	355 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	356 (*current_liboctave_error_handler)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	357 ("%s: cannot allocate memory in pcre_get_substring_list",
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	358 who.c_str ());
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	359 return retval;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	360 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	361
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	362 string_vector tokens (pos_match);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	363 string_vector named_tokens (nnames);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	364 int pos_offset = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	365 pos_match = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	366
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	367 for (int i = 1; i < matches; i++)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	368 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	369 if (ovector[2i] >= 0 && ovector[2i+1] > 0)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	370 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	371 if (i == 1 \|\| ovector[2i] != ovector[2i-2]
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	372 \|\| ovector[2i-1] != ovector[2i+1])
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	373 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	374 if (namecount > 0)
14452 721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	375 {
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	376 // FIXME: Should probably do this with a map()
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	377 // rather than a linear search. However,
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	378 // the number of captured, named expressions
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	379 // is usually pretty small (< 4)
14452 721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	380 for (int j = 0; j < namecount; j++)
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	381 {
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	382 if (nidx[j] == i)
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	383 {
14452 721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	384 named_tokens(named_idx(j)) =
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	385 std::string (*(listptr+i-pos_offset));
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	386 break;
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	387 }
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	388 }
721be41ea988 Stop segfault when using regular expressions with named capture buffers (bug #35683). Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	389 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	390
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	391 tokens(pos_match++) = std::string (*(listptr+i));
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	392 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	393 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	394 pos_offset++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	395 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	396 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	397
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	398 std::string match_string = std::string (*listptr);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	399
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	400 pcre_free_substring_list (listptr);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	401
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	402 regexp::match_element new_elem (named_tokens, tokens, match_string,
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	403 token_extents, start, end);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	404 lst.push_back (new_elem);
14536 6d5c951ec520 Add 'emptymatch', 'noemptymatch' options to regular expressions. Rik <octave@nomad.inbox5.com> parents: 14506 diff changeset	405
6d5c951ec520 Add 'emptymatch', 'noemptymatch' options to regular expressions. Rik <octave@nomad.inbox5.com> parents: 14506 diff changeset	406 if (ovector[1] <= ovector[0])
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	407 {
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	408 // Zero length match. Skip to next char.
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	409 idx = ovector[0] + 1;
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	410 if (idx <= buffer.length ())
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	411 continue;
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	412 }
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	413 else
14536 6d5c951ec520 Add 'emptymatch', 'noemptymatch' options to regular expressions. Rik <octave@nomad.inbox5.com> parents: 14506 diff changeset	414 idx = ovector[1];
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	415
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	416 if (options.once () \|\| idx >= buffer.length ())
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	417 break;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	418 }
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	419 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	420
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	421 retval = regexp::match_data (lst, named_pats);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	422
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	423 return retval;
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	424 }
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	425
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	426 bool
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	427 regexp::is_match (const std::string& buffer)
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	428 {
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	429 regexp::match_data rx_lst = match (buffer);
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	430
15819 1e9a6285acc4 Fix segfault with clear -regexp (bug #37924) Rik <rik@octave.org> parents: 15541 diff changeset	431 return rx_lst.size () > 0;
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	432 }
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	433
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	434 Array<bool>
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	435 regexp::is_match (const string_vector& buffer)
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	436 {
20232 a9574e3c6e9e Deprecate Array::length() and Sparse::length() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19739 diff changeset	437 octave_idx_type len = buffer.numel ();
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	438
14057 7e60182e6a1c avoid deprecated Array constructor John W. Eaton <jwe@octave.org> parents: 14025 diff changeset	439 Array<bool> retval (dim_vector (len, 1));
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	440
20232 a9574e3c6e9e Deprecate Array::length() and Sparse::length() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 19739 diff changeset	441 for (octave_idx_type i = 0; i < buffer.numel (); i++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	442 retval(i) = is_match (buffer(i));
7779 791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	443
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	444 return retval;
791231dac333 Add regexp matching to Fwho and Fclear David Bateman <dbateman@free.fr> parents: diff changeset	445 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	446
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	447 // Declare rep_token_t used in processing replacement string
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	448 typedef struct
17769 49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	449 {
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	450 size_t pos;
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	451 int num;
49a5a4be04a1 maint: Use GNU style coding conventions for code in liboctave/ Rik <rik@octave.org> parents: 17744 diff changeset	452 } rep_token_t;
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	453
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	454
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	455 std::string
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	456 regexp::replace (const std::string& buffer, const std::string& replacement)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	457 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	458 std::string retval;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	459
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	460 regexp::match_data rx_lst = match (buffer);
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	461
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	462 size_t num_matches = rx_lst.size ();
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	463
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	464 if (num_matches == 0)
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	465 {
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	466 retval = buffer;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	467 return retval;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	468 }
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	469
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	470 // Identify replacement tokens; build a vector of group numbers in
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	471 // the replacement string so that we can quickly calculate the size
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	472 // of the replacement.
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	473
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	474 // FIXME: All code assumes that only 10 tokens ($0-$9) exist.
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	475 // $11 represents $1 followed by the character '1' rather than
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	476 // the eleventh capture buffer.
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	477
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	478 std::string repstr = replacement;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	479 std::vector<rep_token_t> tokens;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	480 tokens.reserve (5); // Reserve memory for 5 pattern replacements
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	481
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	482 for (size_t i=0; i < repstr.size (); i++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	483 {
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	484 if (repstr[i] == '\\')
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	485 {
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	486 if (i < repstr.size () - 1 && repstr[i+1] == '$')
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	487 {
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	488 repstr.erase (i,1); // erase backslash
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	489 i++; // skip over '$'
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	490 continue;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	491 }
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	492 if (i < repstr.size () - 1 && repstr[i+1] == '\\')
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	493 {
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	494 repstr.erase (i,1); // erase 1st backslash
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	495 continue;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	496 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	497 }
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	498 else if (repstr[i] == '$')
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	499 {
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	500 if (i < repstr.size () - 1 && isdigit (repstr[i+1]))
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	501 {
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	502 rep_token_t tmp_token;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	503
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	504 tmp_token.pos = i;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	505 tmp_token.num = repstr[i+1]-'0';
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	506 tokens.push_back (tmp_token);
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	507 }
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	508 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	509 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	510
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	511 std::string rep;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	512 int num_tokens = tokens.size ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	513
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	514 if (num_tokens > 0)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	515 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	516 // Determine replacement length
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	517 const size_t replen = repstr.size () - 2*num_tokens;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	518 int delta = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	519 regexp::match_data::const_iterator p = rx_lst.begin ();
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	520 for (size_t i = 0; i < num_matches; i++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	521 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	522 OCTAVE_QUIT;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	523
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	524 double start = p->start ();
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	525 double end = p->end ();
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	526
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	527 const Matrix pairs (p->token_extents ());
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	528 size_t pairlen = 0;
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	529 for (int j = 0; j < num_tokens; j++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	530 {
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	531 if (tokens[j].num == 0)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	532 pairlen += static_cast<size_t> (end - start) + 1;
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	533 else if (tokens[j].num <= pairs.rows ())
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	534 pairlen += static_cast<size_t> (pairs(tokens[j].num-1,1)
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	535 - pairs(tokens[j].num-1,0)) + 1;
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	536 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	537 delta += (static_cast<int> (replen + pairlen)
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	538 - static_cast<int> (end - start + 1));
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	539 p++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	540 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	541
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	542 // Build replacement string
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	543 rep.reserve (buffer.size () + delta);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	544 size_t from = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	545 p = rx_lst.begin ();
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	546 for (size_t i = 0; i < num_matches; i++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	547 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	548 OCTAVE_QUIT;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	549
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	550 double start = p->start ();
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	551 double end = p->end ();
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	552
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	553 const Matrix pairs (p->token_extents ());
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	554 rep.append (&buffer[from], static_cast<size_t> (start - 1) - from);
17205 334d8edd48bc lo-regexp.cc: prevent cast of negative floating point value to size_t. Philipp Kutin <philipp.kutin@gmail.com> parents: 16940 diff changeset	555 from = static_cast<size_t> (end);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	556
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	557 size_t cur_pos = 0;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	558
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	559 for (int j = 0; j < num_tokens; j++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	560 {
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	561 rep.append (&repstr[cur_pos], (tokens[j].pos) - cur_pos);
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	562 cur_pos = tokens[j].pos+2;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	563
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	564 int k = tokens[j].num;
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	565 if (k == 0)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	566 {
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	567 // replace with entire match
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	568 rep.append (&buffer[static_cast<size_t> (end - 1)],
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	569 static_cast<size_t> (end - start) + 1);
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	570 }
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	571 else if (k <= pairs.rows ())
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	572 {
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	573 // replace with group capture
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	574 rep.append (&buffer[static_cast<size_t> (pairs(k-1,0)-1)],
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	575 static_cast<size_t> (pairs(k-1,1)
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	576 - pairs(k-1,0)) + 1);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	577 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	578 else
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	579 {
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	580 // replace with nothing
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	581 }
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	582 }
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	583 if (cur_pos < repstr.size ())
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	584 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	585
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	586 p++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	587 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	588 rep.append (&buffer[from], buffer.size () - from);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	589 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	590 else
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	591 {
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	592 // Determine repstr length
9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	593 const size_t replen = repstr.size ();
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	594 int delta = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	595 regexp::match_data::const_iterator p = rx_lst.begin ();
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	596 for (size_t i = 0; i < num_matches; i++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	597 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	598 OCTAVE_QUIT;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	599 delta += static_cast<int> (replen)
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	600 - static_cast<int> (p->end () - p->start () + 1);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	601 p++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	602 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	603
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	604 // Build replacement string
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	605 rep.reserve (buffer.size () + delta);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	606 size_t from = 0;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	607 p = rx_lst.begin ();
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	608 for (size_t i = 0; i < num_matches; i++)
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	609 {
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	610 OCTAVE_QUIT;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	611 rep.append (&buffer[from],
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	612 static_cast<size_t> (p->start () - 1) - from);
17205 334d8edd48bc lo-regexp.cc: prevent cast of negative floating point value to size_t. Philipp Kutin <philipp.kutin@gmail.com> parents: 16940 diff changeset	613 from = static_cast<size_t> (p->end ());
15541 9db32cabeacf Fix backslash handling in regexp pattern (Bug #37092) Rik <rik@octave.org> parents: 15271 diff changeset	614 rep.append (repstr);
14024 fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	615 p++;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	616 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	617 rep.append (&buffer[from], buffer.size () - from);
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	618 }
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	619
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	620 retval = rep;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	621 return retval;
fc9f204faea0 refactor regexp (bug #34440) John W. Eaton <jwe@octave.org> parents: 11586 diff changeset	622 }

Mercurial > octave

annotate liboctave/util/lo-regexp.cc @ 20955:77f5591878bf