octave: libinterp/corefcn/strfind.cc annotate

annotate libinterp/corefcn/strfind.cc @ 17744:d63878346099

maint: Update copyright notices for release.

author	John W. Eaton <jwe@octave.org>
date	Wed, 23 Oct 2013 22:09:27 -0400
parents	67c6fc2b9f63
children	175b392e91fe

rev	line source
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	1 /*
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	2
17744 d63878346099 maint: Update copyright notices for release. John W. Eaton <jwe@octave.org> parents: 17398 diff changeset	3 Copyright (C) 2009-2013 Jaroslav Hajek
11523 fd0a3ac60b0e update copyright notices John W. Eaton <jwe@octave.org> parents: 10840 diff changeset	4 Copyright (C) 2009-2010 VZLU Prague
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	5
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	6 This file is part of Octave.
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	7
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	8 Octave is free software; you can redistribute it and/or modify it
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	9 under the terms of the GNU General Public License as published by the
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	10 Free Software Foundation; either version 3 of the License, or (at your
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	11 option) any later version.
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	12
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	13 Octave is distributed in the hope that it will be useful, but WITHOUT
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	16 for more details.
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	17
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	18 You should have received a copy of the GNU General Public License
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	19 along with Octave; see the file COPYING. If not, see
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	20 <http://www.gnu.org/licenses/>.
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	21
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	22 */
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	23
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	24 #ifdef HAVE_CONFIG_H
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	25 #include <config.h>
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	26 #endif
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	27
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	28 #include <algorithm>
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	29 #include <deque>
15215 9020dddc925a use std::numeric_limits for integer max and min values John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	30 #include <limits>
9020dddc925a use std::numeric_limits for integer max and min values John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	31 #include <string>
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	32
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	33 #include "Cell.h"
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	34 #include "ov.h"
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	35 #include "defun.h"
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	36 #include "unwind-prot.h"
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	37 #include "gripes.h"
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	38 #include "utils.h"
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	39
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	40 // This allows safe indexing with char. In C++, char may be (and often is) signed!
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	41 #define ORD(ch) static_cast<unsigned char>(ch)
15215 9020dddc925a use std::numeric_limits for integer max and min values John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	42 #define TABSIZE (std::numeric_limits<unsigned char>::max () + 1)
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	43
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	44 // This is the quick search algorithm, as described at
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	45 // http://www-igm.univ-mlv.fr/~lecroq/string/node19.html
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	46 static void
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	47 qs_preprocess (const Array<char>& needle,
15215 9020dddc925a use std::numeric_limits for integer max and min values John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	48 octave_idx_type *table)
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	49 {
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	50 const char *x = needle.data ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	51 octave_idx_type m = needle.numel ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	52
12786 4e70c4e61c24 strfind.cc: Fix infinite loop when pattern contains 255 (Bug #33670). Rik <octave@nomad.inbox5.com> parents: 12483 diff changeset	53 for (octave_idx_type i = 0; i < TABSIZE; i++)
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	54 table[i] = m + 1;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	55 for (octave_idx_type i = 0; i < m; i++)
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	56 table[ORD(x[i])] = m - i;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	57 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	58
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	59
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	60 static Array<octave_idx_type>
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	61 qs_search (const Array<char>& needle,
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	62 const Array<char>& haystack,
15215 9020dddc925a use std::numeric_limits for integer max and min values John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	63 const octave_idx_type *table,
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	64 bool overlaps = true)
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	65 {
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	66 const char *x = needle.data ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	67 octave_idx_type m = needle.numel ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	68 const char *y = haystack.data ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	69 octave_idx_type n = haystack.numel ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	70
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	71 // We'll use deque because it typically has the most favorable properties for
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	72 // the operation we need.
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	73 std::deque<octave_idx_type> accum;
10133 2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	74 if (m == 1)
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	75 {
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	76 // Looking for a single character.
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	77 for (octave_idx_type i = 0; i < n; i++)
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	78 {
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	79 if (y[i] == x[0])
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	80 accum.push_back (i);
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	81 }
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	82 }
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	83 else if (m == 2)
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	84 {
10133 2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	85 // Two characters.
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	86 if (overlaps)
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	87 {
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	88 for (octave_idx_type i = 0; i < n-1; i++)
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	89 {
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	90 if (y[i] == x[0] && y[i+1] == x[1])
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	91 accum.push_back (i);
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	92 }
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	93 }
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	94 else
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	95 {
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	96 for (octave_idx_type i = 0; i < n-1; i++)
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	97 {
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	98 if (y[i] == x[0] && y[i+1] == x[1])
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	99 accum.push_back (i++);
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	100 }
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	101 }
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	102 }
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	103 else if (n >= m)
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	104 {
2e4fc7fdba15 optimize strfind with 1 or 2 characters Jaroslav Hajek <highegg@gmail.com> parents: 10086 diff changeset	105 // General case.
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	106 octave_idx_type j = 0;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	107
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	108 if (overlaps)
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	109 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	110 while (j < n - m)
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	111 {
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	112 if (std::equal (x, x + m, y + j))
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	113 accum.push_back (j);
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	114 j += table[ORD(y[j + m])];
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	115 }
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	116 }
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	117 else
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	118 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	119 while (j < n - m)
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	120 {
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	121 if (std::equal (x, x + m, y + j))
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	122 {
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	123 accum.push_back (j);
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	124 j += m;
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	125 }
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	126 else
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	127 j += table[ORD(y[j + m])];
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	128 }
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	129 }
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	130
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	131 if (j == n - m && std::equal (x, x + m, y + j))
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	132 accum.push_back (j);
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	133 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	134
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	135 octave_idx_type nmatch = accum.size ();
10258 e317791645c4 64-bit fixes John W. Eaton <jwe@octave.org> parents: 10133 diff changeset	136 octave_idx_type one = 1;
e317791645c4 64-bit fixes John W. Eaton <jwe@octave.org> parents: 10133 diff changeset	137 Array<octave_idx_type> result (dim_vector (std::min (one, nmatch), nmatch));
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	138 octave_idx_type k = 0;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	139 for (std::deque<octave_idx_type>::const_iterator iter = accum.begin ();
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	140 iter != accum.end (); iter++)
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	141 {
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	142 result.xelem (k++) = *iter;
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	143 }
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	144
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	145 return result;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	146 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	147
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	148 DEFUN (strfind, args, ,
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	149 "-- texinfo --\n\
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	150 @deftypefn {Built-in Function} {@var{idx} =} strfind (@var{str}, @var{pattern})\n\
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	151 @deftypefnx {Built-in Function} {@var{idx} =} strfind (@var{cellstr}, @var{pattern})\n\
17398 67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	152 @deftypefnx {Built-in Function} {@var{idx} =} strfind (@dots{}, \"overlaps\", @var{val})\n\
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	153 Search for @var{pattern} in the string @var{str} and return the\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	154 starting index of every such occurrence in the vector @var{idx}.\n\
17398 67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	155 \n\
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	156 If there is no such occurrence, or if @var{pattern} is longer\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	157 than @var{str}, then @var{idx} is the empty array @code{[]}.\n\
17398 67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	158 The optional argument @qcode{\"overlaps\"} determines whether the pattern\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	159 can match at every position in @var{str} (true), or only for unique\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	160 occurrences of the complete pattern (false). The default is true.\n\
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	161 \n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	162 If a cell array of strings @var{cellstr} is specified\n\
17398 67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	163 then @var{idx} is a cell array of vectors, as specified above.\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	164 \n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	165 Examples:\n\
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	166 \n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	167 @example\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	168 @group\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	169 strfind (\"abababa\", \"aba\")\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	170 @result{} [1, 3, 5]\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	171 \n\
17398 67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	172 strfind (\"abababa\", \"aba\", \"overlaps\", false)\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	173 @result{} [1, 5]\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	174 \n\
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	175 strfind (@{\"abababa\", \"bebebe\", \"ab\"@}, \"aba\")\n\
14360 97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	176 @result{}\n\
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	177 @{\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	178 [1,1] =\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	179 \n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	180 1 3 5\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	181 \n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	182 [1,2] = [](1x0)\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	183 [1,3] = [](1x0)\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	184 @}\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	185 @end group\n\
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	186 @end example\n\
11572 7d6d8c1e471f Grammarcheck Texinfo for files in src directory. Rik <octave@nomad.inbox5.com> parents: 11553 diff changeset	187 @seealso{findstr, strmatch, regexp, regexpi, find}\n\
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	188 @end deftypefn")
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	189 {
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	190 octave_value retval;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	191 int nargin = args.length ();
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	192 bool overlaps = true;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	193
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	194 if (nargin == 4 && args(2).is_string () && args(3).is_scalar_type ())
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	195 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	196 std::string opt = args(2).string_value ();
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	197 if (opt == "overlaps")
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	198 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	199 overlaps = args(3).bool_value ();
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	200 nargin = 2;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	201 }
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	202 else
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	203 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	204 error ("strfind: unknown option: %s", opt.c_str ());
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	205 return retval;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	206 }
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	207 }
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	208
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	209 if (nargin == 2)
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	210 {
10086 76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	211 octave_value argstr = args(0), argpat = args(1);
76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	212 if (argpat.is_string ())
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	213 {
10086 76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	214 Array<char> needle = argpat.char_array_value ();
12786 4e70c4e61c24 strfind.cc: Fix infinite loop when pattern contains 255 (Bug #33670). Rik <octave@nomad.inbox5.com> parents: 12483 diff changeset	215 OCTAVE_LOCAL_BUFFER (octave_idx_type, table, TABSIZE);
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	216 qs_preprocess (needle, table);
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	217
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	218 if (argstr.is_string ())
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	219 retval = octave_value (qs_search (needle, argstr.char_array_value (),
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	220 table, overlaps),
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	221 true, true);
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	222 else if (argstr.is_cell ())
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	223 {
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	224 const Cell argsc = argstr.cell_value ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	225 Cell retc (argsc.dims ());
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	226 octave_idx_type ns = argsc.numel ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	227
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	228 for (octave_idx_type i = 0; i < ns; i++)
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	229 {
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	230 octave_value argse = argsc(i);
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	231 if (argse.is_string ())
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	232 retc(i) = octave_value (qs_search (needle, argse.char_array_value (),
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	233 table, overlaps),
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	234 true, true);
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	235 else
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	236 {
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	237 error ("strfind: each element of CELLSTR must be a string");
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	238 break;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	239 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	240 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	241
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	242 retval = retc;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	243 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	244 else
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	245 error ("strfind: first argument must be a string or cell array of strings");
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	246 }
10086 76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	247 else if (argpat.is_cell ())
76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	248 retval = do_simple_cellfun (Fstrfind, "strfind", args);
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	249 else
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	250 error ("strfind: PATTERN must be a string or cell array of strings");
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	251 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	252 else
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	253 print_usage ();
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	254
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	255 return retval;
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	256 }
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	257
a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	258 /*
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	259 %!assert (strfind ("abababa", "aba"), [1, 3, 5])
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	260 %!assert (strfind ("abababa", "aba", "overlaps", false), [1, 5])
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	261 %!assert (strfind ({"abababa", "bla", "bla"}, "a"), {[1, 3, 5, 7], 3, 3})
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	262 %!assert (strfind ("Linux _is_ user-friendly. It just isn't ignorant-friendly or idiot-friendly.", "friendly"), [17, 50, 68])
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	263
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	264 %!error strfind ()
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	265 %!error strfind ("foo", "bar", 1)
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	266 %!error <PATTERN must be a string> strfind ("foo", 100)
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	267 %!error <first argument must be a string> strfind (100, "foo")
10022 a14dc255427f omitted file in last patch Jaroslav Hajek <highegg@gmail.com> parents: diff changeset	268 */
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	269
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	270 static Array<char>
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	271 qs_replace (const Array<char>& str, const Array<char>& pat,
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11572 diff changeset	272 const Array<char>& rep,
15215 9020dddc925a use std::numeric_limits for integer max and min values John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	273 const octave_idx_type *table,
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	274 bool overlaps = true)
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	275 {
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	276 Array<char> ret = str;
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	277
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	278 octave_idx_type siz = str.numel (), psiz = pat.numel (), rsiz = rep.numel ();
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	279
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	280 if (psiz != 0)
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	281 {
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	282 // Look up matches, without overlaps.
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	283 const Array<octave_idx_type> idx = qs_search (pat, str, table, overlaps);
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	284 octave_idx_type nidx = idx.numel ();
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	285
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	286 if (nidx)
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	287 {
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	288 // Compute result size.
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	289 octave_idx_type retsiz;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	290 if (overlaps)
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	291 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	292 retsiz = 0;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	293 // OMG. Is this the "right answer" MW always looks for, or
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	294 // someone was just lazy?
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	295 octave_idx_type k = 0;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	296 for (octave_idx_type i = 0; i < nidx; i++)
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	297 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	298 octave_idx_type j = idx(i);
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	299 if (j >= k)
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	300 retsiz += j - k;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	301 retsiz += rsiz;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	302 k = j + psiz;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	303 }
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	304
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	305 retsiz += siz - k;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	306 }
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	307 else
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	308 retsiz = siz + nidx * (rsiz - psiz);
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	309
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	310 ret.clear (dim_vector (1, retsiz));
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	311 const char src = str.data (), reps = rep.data ();
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	312 char *dest = ret.fortran_vec ();
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	313
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	314 octave_idx_type k = 0;
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	315 for (octave_idx_type i = 0; i < nidx; i++)
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	316 {
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	317 octave_idx_type j = idx(i);
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	318 if (j >= k)
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	319 dest = std::copy (src + k, src + j, dest);
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	320 dest = std::copy (reps, reps + rsiz, dest);
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	321 k = j + psiz;
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	322 }
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	323
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	324 std::copy (src + k, src + siz, dest);
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	325 }
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	326 }
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	327
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	328 return ret;
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	329 }
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	330
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	331 DEFUN (strrep, args, ,
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	332 "-- texinfo --\n\
17398 67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	333 @deftypefn {Built-in Function} {@var{newstr} =} strrep (@var{str}, @var{ptn}, @var{rep})\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	334 @deftypefnx {Built-in Function} {@var{newstr} =} strrep (@var{cellstr}, @var{ptn}, @var{rep})\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	335 @deftypefnx {Built-in Function} {@var{newstr} =} strrep (@dots{}, \"overlaps\", @var{val})\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	336 Replace all occurrences of the pattern @var{ptn} in the string @var{str}\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	337 with the string @var{rep} and return the result.\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	338 \n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	339 The optional argument @qcode{\"overlaps\"} determines whether the pattern\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	340 can match at every position in @var{str} (true), or only for unique\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	341 occurrences of the complete pattern (false). The default is true.\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	342 \n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	343 @var{s} may also be a cell array of strings, in which case the replacement is\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	344 done for each element and a cell array is returned.\n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	345 \n\
67c6fc2b9f63 doc: Add info about "overlaps" option to strfind, strrep. Rik <rik@octave.org> parents: 15215 diff changeset	346 Example:\n\
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	347 \n\
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	348 @example\n\
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	349 @group\n\
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	350 strrep (\"This is a test string\", \"is\", \"&%$\")\n\
14360 97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	351 @result{} \"Th&%$ &%$ a test string\"\n\
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	352 @end group\n\
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	353 @end example\n\
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	354 \n\
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	355 @seealso{regexprep, strfind, findstr}\n\
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	356 @end deftypefn")
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	357 {
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	358 octave_value retval;
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	359 int nargin = args.length ();
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	360 bool overlaps = true;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	361
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	362 if (nargin == 5 && args(3).is_string () && args(4).is_scalar_type ())
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	363 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	364 std::string opt = args(3).string_value ();
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	365 if (opt == "overlaps")
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	366 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	367 overlaps = args(4).bool_value ();
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	368 nargin = 3;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	369 }
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	370 else
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	371 {
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	372 error ("strrep: unknown option: %s", opt.c_str ());
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	373 return retval;
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	374 }
21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	375 }
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	376
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	377 if (nargin == 3)
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	378 {
10086 76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	379 octave_value argstr = args(0), argpat = args(1), argrep = args(2);
76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	380 if (argpat.is_string () && argrep.is_string ())
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	381 {
10086 76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	382 const Array<char> pat = argpat.char_array_value ();
76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	383 const Array<char> rep = argrep.char_array_value ();
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	384
12786 4e70c4e61c24 strfind.cc: Fix infinite loop when pattern contains 255 (Bug #33670). Rik <octave@nomad.inbox5.com> parents: 12483 diff changeset	385 OCTAVE_LOCAL_BUFFER (octave_idx_type, table, TABSIZE);
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	386 qs_preprocess (pat, table);
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	387
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	388 if (argstr.is_string ())
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	389 retval = qs_replace (argstr.char_array_value (), pat, rep, table, overlaps);
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	390 else if (argstr.is_cell ())
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	391 {
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	392 const Cell argsc = argstr.cell_value ();
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	393 Cell retc (argsc.dims ());
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	394 octave_idx_type ns = argsc.numel ();
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	395
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	396 for (octave_idx_type i = 0; i < ns; i++)
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	397 {
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	398 octave_value argse = argsc(i);
5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	399 if (argse.is_string ())
10677 21defab4207c make strrep not skipping overlaps by default, allow an option in both strfind/strrep Jaroslav Hajek <highegg@gmail.com> parents: 10521 diff changeset	400 retc(i) = qs_replace (argse.char_array_value (), pat, rep, table, overlaps);
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	401 else
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	402 {
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	403 error ("strrep: each element of S must be a string");
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	404 break;
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	405 }
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	406 }
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	407
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	408 retval = retc;
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	409 }
10074 5e2b4b7967cc allow array of strings in strrep Jaroslav Hajek <highegg@gmail.com> parents: 10053 diff changeset	410 else
12483 7a5aacf65f81 Rewrite error strings in src/ to use variables named in documentation. Rik <octave@nomad.inbox5.com> parents: 11586 diff changeset	411 error ("strrep: S must be a string or cell array of strings");
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	412 }
10086 76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	413 else if (argpat.is_cell () \|\| argrep.is_cell ())
76df75b10c80 allow more cells in strfind/strrep + supply a general mechanism Jaroslav Hajek <highegg@gmail.com> parents: 10074 diff changeset	414 retval = do_simple_cellfun (Fstrrep, "strrep", args);
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	415 else
12483 7a5aacf65f81 Rewrite error strings in src/ to use variables named in documentation. Rik <octave@nomad.inbox5.com> parents: 11586 diff changeset	416 error ("strrep: PTN and REP arguments must be strings or cell arrays of strings");
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	417 }
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	418 else
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	419 print_usage ();
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	420
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	421 return retval;
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	422 }
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	423
830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	424 /*
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	425 %!assert (strrep ("This is a test string", "is", "&%$"),
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	426 %! "Th&%$ &%$ a test string")
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	427 %!assert (strrep ("abababc", "abab", "xyz"), "xyzxyzc")
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	428 %!assert (strrep ("abababc", "abab", "xyz", "overlaps", false), "xyzabc")
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	429
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	430 %!error strrep ()
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	431 %!error strrep ("foo", "bar", 3, 4)
10053 830986c43dee implement compiled strrep Jaroslav Hajek <highegg@gmail.com> parents: 10022 diff changeset	432 */

Mercurial > octave

annotate libinterp/corefcn/strfind.cc @ 17744:d63878346099