Mercurial > octave
annotate libinterp/corefcn/regexp.cc @ 25337:3ff9192b676e
use auto keyword to declare iterator variables where possible
* dialog.cc, files-dock-widget.cc, history-dock-widget.cc,
file-editor.cc, octave-qt-link.cc, call-stack.cc, debug.cc,
dynamic-ld.cc, fcn-info.cc, fcn-info.h, genprops.awk, graphics.cc,
gtk-manager.cc, gtk-manager.h, hook-fcn.h, load-path.cc, load-save.cc,
ls-mat5.cc, mex.cc, oct-map.cc, oct-stream.cc, octave-link.cc,
regexp.cc, symscope.h, symtab.h, txt-eng.h, url-handle-manager.cc,
variables.cc, ov-base.cc, ov-class.cc, ov-classdef.cc,
ov-fcn-handle.cc, ov-java.cc, ov-struct.cc, bp-table.cc, jit-ir.cc,
jit-typeinfo.cc, pt-arg-list.cc, pt-arg-list.h, pt-array-list.cc,
pt-check.cc, pt-classdef.cc, pt-decl.h, pt-eval.cc, pt-idx.cc,
pt-jit.cc, pt-misc.cc, pt-pr-code.cc, pt-select.h, pt-stmt.h,
caseless-str.h, lo-regexp.cc:
Use auto keyword to declare iterator variables where possible.
Style fixes.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 02 May 2018 01:36:20 -0400 |
parents | 6652d3823428 |
children | 416856765a55 |
rev | line source |
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5582 | 1 /* |
2 | |
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3 Copyright (C) 2005-2018 David Bateman |
11523 | 4 Copyright (C) 2002-2005 Paul Kienzle |
7016 | 5 |
6 This file is part of Octave. | |
5582 | 7 |
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8 Octave is free software: you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by |
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10 the Free Software Foundation, either version 3 of the License, or |
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11 (at your option) any later version. |
5582 | 12 |
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13 Octave is distributed in the hope that it will be useful, but |
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14 WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
5582 | 17 |
18 You should have received a copy of the GNU General Public License | |
7016 | 19 along with Octave; see the file COPYING. If not, see |
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20 <https://www.gnu.org/licenses/>. |
5582 | 21 |
22 */ | |
23 | |
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24 #if defined (HAVE_CONFIG_H) |
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25 # include "config.h" |
5582 | 26 #endif |
27 | |
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28 #include <list> |
5765 | 29 #include <sstream> |
30 | |
5582 | 31 #include <pcre.h> |
32 | |
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33 #include "base-list.h" |
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34 #include "oct-locbuf.h" |
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35 #include "quit.h" |
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36 #include "lo-regexp.h" |
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37 #include "str-vec.h" |
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38 |
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39 #include "defun.h" |
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40 #include "Cell.h" |
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41 #include "error.h" |
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42 #include "errwarn.h" |
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43 #include "oct-map.h" |
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44 #include "ovl.h" |
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45 #include "utils.h" |
5785 | 46 |
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47 // Replace backslash escapes in a string with the real values. We need |
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48 // two special functions instead of the one in utils.cc because the set |
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49 // of escape sequences used for regexp patterns and replacement strings |
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50 // is different from those used in the *printf functions. |
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51 |
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52 static std::string |
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53 do_regexp_ptn_string_escapes (const std::string& s, bool is_sq_str) |
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54 { |
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55 std::string retval; |
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56 |
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57 size_t i = 0; |
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58 size_t j = 0; |
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59 size_t len = s.length (); |
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60 |
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61 retval.resize (len); |
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62 |
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63 while (j < len) |
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64 { |
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65 if (s[j] == '\\' && j+1 < len) |
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66 { |
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67 switch (s[++j]) |
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68 { |
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69 case 'b': // backspace |
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70 if (is_sq_str) |
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71 retval[i] = '\b'; |
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72 else |
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73 { |
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74 // Pass escape sequence through |
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75 retval[i] = '\\'; |
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76 retval[++i] = 'b'; |
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77 } |
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78 break; |
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79 |
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80 // Translate \< and \> to PCRE word boundary |
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81 case '<': // begin word boundary |
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82 case '>': // end word boundary |
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83 retval[i] = '\\'; |
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84 retval[++i] = 'b'; |
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85 break; |
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86 |
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87 case 'o': // octal input |
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88 { |
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89 bool bad_esc_seq = (j+1 >= len); |
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90 |
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91 bool brace = false; |
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92 if (! bad_esc_seq && s[++j] == '{') |
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93 { |
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94 brace = true; |
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95 j++; |
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96 } |
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97 |
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98 int tmpi = 0; |
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99 size_t k; |
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100 for (k = j; k < std::min (j+3+brace, len); k++) |
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101 { |
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102 int digit = s[k] - '0'; |
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103 if (digit < 0 || digit > 7) |
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104 break; |
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105 tmpi <<= 3; |
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106 tmpi += digit; |
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107 } |
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108 if (bad_esc_seq || (brace && s[k++] != '}')) |
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109 { |
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110 bad_esc_seq = true; |
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111 tmpi = 0; |
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112 warning (R"(malformed octal escape sequence '\o' -- converting to '\0')"); |
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113 } |
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114 retval[i] = tmpi; |
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115 j = k - 1; |
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116 break; |
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117 } |
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118 |
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119 default: // pass escape sequence through |
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120 retval[i] = '\\'; |
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121 retval[++i] = s[j]; |
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122 break; |
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123 } |
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124 } |
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125 else |
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126 { |
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127 retval[i] = s[j]; |
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128 } |
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129 |
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130 i++; |
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131 j++; |
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132 } |
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133 |
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134 retval.resize (i); |
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135 |
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136 return retval; |
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137 } |
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138 |
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139 static std::string |
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140 do_regexp_rep_string_escapes (const std::string& s) |
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141 { |
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142 std::string retval; |
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143 |
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144 size_t i = 0; |
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145 size_t j = 0; |
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146 size_t len = s.length (); |
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147 |
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148 retval.resize (len); |
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149 |
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150 while (j < len) |
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151 { |
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152 if (s[j] == '\\' && j+1 < len) |
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153 { |
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154 switch (s[++j]) |
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155 { |
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156 case 'a': // alarm |
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157 retval[i] = '\a'; |
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158 break; |
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159 |
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160 case 'b': // backspace |
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161 retval[i] = '\b'; |
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162 break; |
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163 |
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164 case 'f': // formfeed |
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165 retval[i] = '\f'; |
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166 break; |
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167 |
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168 case 'n': // newline |
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169 retval[i] = '\n'; |
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170 break; |
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171 |
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172 case 'r': // carriage return |
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173 retval[i] = '\r'; |
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174 break; |
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175 |
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176 case 't': // horizontal tab |
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177 retval[i] = '\t'; |
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178 break; |
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179 |
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180 case 'v': // vertical tab |
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181 retval[i] = '\v'; |
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182 break; |
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183 |
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184 case '0': |
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185 case '1': |
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186 case '2': |
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187 case '3': |
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188 case '4': |
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189 case '5': |
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190 case '6': |
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191 case '7': // octal input |
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192 { |
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193 size_t k; |
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194 int tmpi = s[j] - '0'; |
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195 for (k = j+1; k < std::min (j+3, len); k++) |
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196 { |
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197 int digit = s[k] - '0'; |
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198 if (digit < 0 || digit > 7) |
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199 break; |
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200 tmpi <<= 3; |
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201 tmpi += digit; |
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202 } |
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203 retval[i] = tmpi; |
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204 j = k - 1; |
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205 break; |
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206 } |
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207 |
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208 case 'o': // octal input |
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209 { |
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210 bool bad_esc_seq = (j+1 >= len); |
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211 |
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212 bool brace = false; |
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213 if (! bad_esc_seq && s[++j] == '{') |
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214 { |
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215 brace = true; |
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216 j++; |
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217 } |
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218 |
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219 int tmpi = 0; |
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220 size_t k; |
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221 for (k = j; k < std::min (j+3+brace, len); k++) |
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222 { |
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223 int digit = s[k] - '0'; |
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224 if (digit < 0 || digit > 7) |
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225 break; |
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226 tmpi <<= 3; |
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227 tmpi += digit; |
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228 } |
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229 if (bad_esc_seq || (brace && s[k++] != '}')) |
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230 { |
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231 warning (R"(malformed octal escape sequence '\o' -- converting to '\0')"); |
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232 tmpi = 0; |
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233 } |
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234 retval[i] = tmpi; |
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235 j = k - 1; |
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236 break; |
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237 } |
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238 |
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239 case 'x': // hex input |
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240 { |
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241 bool bad_esc_seq = (j+1 >= len); |
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242 |
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243 bool brace = false; |
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244 if (! bad_esc_seq && s[++j] == '{') |
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245 { |
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246 brace = true; |
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247 j++; |
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248 } |
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249 |
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250 int tmpi = 0; |
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251 size_t k; |
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252 for (k = j; k < std::min (j+2+brace, len); k++) |
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253 { |
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254 if (! isxdigit (s[k])) |
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255 break; |
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256 |
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257 tmpi <<= 4; |
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258 int digit = s[k]; |
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259 if (digit >= 'a') |
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260 tmpi += digit - 'a' + 10; |
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261 else if (digit >= 'A') |
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262 tmpi += digit - 'A' + 10; |
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263 else |
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264 tmpi += digit - '0'; |
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265 } |
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266 if (bad_esc_seq || (brace && s[k++] != '}')) |
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267 { |
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268 warning (R"(malformed hex escape sequence '\x' -- converting to '\0')"); |
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269 tmpi = 0; |
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270 } |
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271 retval[i] = tmpi; |
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272 j = k - 1; |
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273 break; |
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274 } |
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275 |
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276 // Both dollar sign (for capture buffer) and backslash are |
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277 // passed through with their escape backslash. The processing |
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278 // for these must occur during the actual replacement operation |
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279 // in lo-regexp.cc. |
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280 case '$': // pass dollar sign through with escape |
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281 retval[i] = '\\'; retval[++i] = '$'; |
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282 break; |
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283 |
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284 case '\\': // pass backslash through with escape |
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285 retval[i] = '\\'; retval[++i] = '\\'; |
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286 break; |
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287 |
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288 default: // convert escaped character to unescaped char |
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289 retval[i] = s[j]; |
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290 break; |
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291 } |
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292 } |
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293 else |
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294 { |
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295 retval[i] = s[j]; |
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296 } |
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297 |
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298 i++; |
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299 j++; |
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300 } |
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301 |
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302 retval.resize (i); |
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303 |
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304 return retval; |
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305 } |
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306 |
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307 static void |
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308 parse_options (octave::regexp::opts& options, const octave_value_list& args, |
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309 const std::string& who, int skip, bool& extra_args) |
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310 { |
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311 extra_args = false; |
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312 |
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313 for (int i = skip; i < args.length (); i++) |
5582 | 314 { |
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315 std::string str; |
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316 |
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317 str = args(i).xstring_value ("%s: optional arguments must be strings", who.c_str ()); |
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318 |
5582 | 319 std::transform (str.begin (), str.end (), str.begin (), tolower); |
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320 |
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321 if (str.find ("once", 0) == 0) |
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322 options.once (true); |
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323 else if (str.find ("matchcase", 0) == 0) |
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324 options.case_insensitive (false); |
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325 else if (str.find ("ignorecase", 0) == 0) |
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326 options.case_insensitive (true); |
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327 else if (str.find ("dotall", 0) == 0) |
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328 options.dotexceptnewline (false); |
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329 else if (str.find ("stringanchors", 0) == 0) |
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330 options.lineanchors (false); |
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331 else if (str.find ("literalspacing", 0) == 0) |
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332 options.freespacing (false); |
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333 else if (str.find ("noemptymatch", 0) == 0) |
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334 options.emptymatch (false); |
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335 else if (str.find ("dotexceptnewline", 0) == 0) |
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336 options.dotexceptnewline (true); |
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337 else if (str.find ("lineanchors", 0) == 0) |
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338 options.lineanchors (true); |
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339 else if (str.find ("freespacing", 0) == 0) |
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340 options.freespacing (true); |
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341 else if (str.find ("emptymatch", 0) == 0) |
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342 options.emptymatch (true); |
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343 else if (str.find ("start", 0) == 0 |
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344 || str.find ("end", 0) == 0 |
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345 || str.find ("tokenextents", 0) == 0 |
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346 || str.find ("match", 0) == 0 |
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347 || str.find ("tokens", 0) == 0 |
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348 || str.find ("names", 0) == 0 |
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349 || str.find ("split", 0) == 0) |
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350 extra_args = true; |
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351 else |
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352 error ("%s: unrecognized option", who.c_str ()); |
5582 | 353 } |
5785 | 354 } |
5582 | 355 |
5785 | 356 static octave_value_list |
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357 octregexp (const octave_value_list& args, int nargout, |
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358 const std::string& who, bool case_insensitive = false) |
5785 | 359 { |
360 octave_value_list retval; | |
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361 |
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362 int nargin = args.length (); |
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363 |
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364 // Make sure we have string, pattern |
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365 const std::string buffer = args(0).string_value (); |
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366 |
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367 std::string pattern = args(1).string_value (); |
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368 |
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369 // Rewrite pattern for PCRE |
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370 pattern = do_regexp_ptn_string_escapes (pattern, args(1).is_sq_string ()); |
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371 |
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372 octave::regexp::opts options; |
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373 options.case_insensitive (case_insensitive); |
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374 bool extra_options = false; |
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375 parse_options (options, args, who, 2, extra_options); |
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376 |
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377 octave::regexp::match_data rx_lst |
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378 = octave::regexp::match (pattern, buffer, options, who); |
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379 |
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380 string_vector named_pats = rx_lst.named_patterns (); |
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381 |
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382 size_t sz = rx_lst.size (); |
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384 // Converted the linked list in the correct form for the return values |
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385 |
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386 octave_map nmap (dim_vector ((sz == 0 ? 0 : 1), sz), named_pats); |
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387 |
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388 retval.resize (7); |
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389 |
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390 if (sz != 0) |
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391 { |
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392 for (int j = 0; j < named_pats.numel (); j++) |
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393 { |
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394 Cell ctmp (dim_vector (1, sz)); |
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395 octave_idx_type i = 0; |
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396 |
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397 for (const auto& match_data : rx_lst) |
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398 { |
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399 string_vector named_tokens = match_data.named_tokens (); |
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400 |
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401 ctmp(i++) = named_tokens(j); |
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402 } |
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403 |
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404 nmap.assign (named_pats(j), ctmp); |
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405 } |
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406 } |
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407 retval(5) = nmap; |
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408 |
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409 if (options.once ()) |
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410 { |
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411 auto p = rx_lst.begin (); |
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412 |
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413 retval(4) = (sz ? p->tokens () : Cell ()); |
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414 retval(3) = (sz ? p->match_string () : ""); |
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415 retval(2) = (sz ? p->token_extents () : Matrix ()); |
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416 |
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417 if (sz) |
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418 { |
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419 double start = p->start (); |
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420 double end = p->end (); |
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421 |
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422 Cell split (dim_vector (1, 2)); |
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423 split(0) = buffer.substr (0, start-1); |
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424 split(1) = buffer.substr (end); |
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426 retval(6) = split; |
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427 retval(1) = end; |
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428 retval(0) = start; |
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429 } |
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430 else |
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431 { |
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432 retval(6) = buffer; |
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433 retval(1) = Matrix (); |
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434 retval(0) = Matrix (); |
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435 } |
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436 } |
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437 else |
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438 { |
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439 Cell tokens (dim_vector (1, sz)); |
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440 Cell match_string (dim_vector (1, sz)); |
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441 Cell token_extents (dim_vector (1, sz)); |
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442 NDArray end (dim_vector (1, sz)); |
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443 NDArray start (dim_vector (1, sz)); |
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444 Cell split (dim_vector (1, sz+1)); |
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445 size_t sp_start = 0; |
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446 |
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447 octave_idx_type i = 0; |
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448 for (const auto& match_data : rx_lst) |
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449 { |
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450 double s = match_data.start (); |
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451 double e = match_data.end (); |
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453 string_vector tmp = match_data.tokens (); |
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454 tokens(i) = Cell (dim_vector (1, tmp.numel ()), tmp); |
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455 match_string(i) = match_data.match_string (); |
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456 token_extents(i) = match_data.token_extents (); |
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457 end(i) = e; |
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458 start(i) = s; |
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459 split(i) = buffer.substr (sp_start, s-sp_start-1); |
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460 sp_start = e; |
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461 i++; |
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462 } |
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463 |
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464 split(i) = buffer.substr (sp_start); |
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465 |
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466 retval(6) = split; |
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467 retval(4) = tokens; |
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468 retval(3) = match_string; |
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469 retval(2) = token_extents; |
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470 retval(1) = end; |
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471 retval(0) = start; |
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472 } |
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473 |
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474 // Alter the order of the output arguments |
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475 |
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476 if (extra_options) |
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477 { |
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478 int n = 0; |
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479 octave_value_list new_retval; |
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480 new_retval.resize (nargout); |
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481 |
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482 int arg_used[7] {}; |
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483 |
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484 for (int j = 2; j < nargin; j++) |
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485 { |
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486 int k = 0; |
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487 std::string str = args(j).string_value (); |
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488 std::transform (str.begin (), str.end (), str.begin (), tolower); |
5582 | 489 |
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490 if (str.find ("once", 0) == 0 |
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491 || str.find ("stringanchors", 0) == 0 |
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492 || str.find ("lineanchors", 0) == 0 |
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493 || str.find ("matchcase", 0) == 0 |
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494 || str.find ("ignorecase", 0) == 0 |
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495 || str.find ("dotall", 0) == 0 |
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496 || str.find ("dotexceptnewline", 0) == 0 |
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497 || str.find ("literalspacing", 0) == 0 |
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498 || str.find ("freespacing", 0) == 0 |
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499 || str.find ("noemptymatch", 0) == 0 |
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500 || str.find ("emptymatch", 0) == 0) |
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501 continue; |
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502 else if (str.find ("start", 0) == 0) |
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503 k = 0; |
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504 else if (str.find ("end", 0) == 0) |
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505 k = 1; |
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506 else if (str.find ("tokenextents", 0) == 0) |
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507 k = 2; |
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508 else if (str.find ("match", 0) == 0) |
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509 k = 3; |
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510 else if (str.find ("tokens", 0) == 0) |
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511 k = 4; |
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512 else if (str.find ("names", 0) == 0) |
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513 k = 5; |
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514 else if (str.find ("split", 0) == 0) |
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515 k = 6; |
5582 | 516 |
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517 new_retval(n++) = retval(k); |
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518 arg_used[k] = true; |
5582 | 519 |
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520 if (n == nargout) |
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521 break; |
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522 } |
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523 |
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524 // Fill in the rest of the arguments |
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525 if (n < nargout) |
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526 { |
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527 for (int j = 0; j < 7; j++) |
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528 { |
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529 if (! arg_used[j]) |
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530 new_retval(n++) = retval(j); |
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531 } |
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532 } |
5582 | 533 |
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534 retval = new_retval; |
5582 | 535 } |
536 | |
537 return retval; | |
538 } | |
539 | |
6361 | 540 static octave_value_list |
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541 octcellregexp (const octave_value_list& args, int nargout, |
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542 const std::string& who, bool case_insensitive = false) |
6361 | 543 { |
544 octave_value_list retval; | |
545 | |
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546 if (args(0).iscell ()) |
6361 | 547 { |
548 OCTAVE_LOCAL_BUFFER (Cell, newretval, nargout); | |
549 octave_value_list new_args = args; | |
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550 Cell cellstr = args(0).cell_value (); |
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551 if (args(1).iscell ()) |
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552 { |
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553 Cell cellpat = args(1).cell_value (); |
6361 | 554 |
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555 if (cellpat.numel () == 1) |
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556 { |
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557 for (int j = 0; j < nargout; j++) |
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558 newretval[j].resize (cellstr.dims ()); |
6361 | 559 |
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560 new_args(1) = cellpat(0); |
6361 | 561 |
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562 for (octave_idx_type i = 0; i < cellstr.numel (); i++) |
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563 { |
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564 new_args(0) = cellstr(i); |
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565 octave_value_list tmp = octregexp (new_args, nargout, who, |
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566 case_insensitive); |
6361 | 567 |
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568 for (int j = 0; j < nargout; j++) |
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569 newretval[j](i) = tmp(j); |
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570 } |
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571 } |
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572 else if (cellstr.numel () == 1) |
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573 { |
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574 for (int j = 0; j < nargout; j++) |
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575 newretval[j].resize (cellpat.dims ()); |
6361 | 576 |
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577 new_args(0) = cellstr(0); |
6361 | 578 |
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579 for (octave_idx_type i = 0; i < cellpat.numel (); i++) |
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580 { |
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581 new_args(1) = cellpat(i); |
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582 octave_value_list tmp = octregexp (new_args, nargout, who, |
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583 case_insensitive); |
6361 | 584 |
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585 for (int j = 0; j < nargout; j++) |
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586 newretval[j](i) = tmp(j); |
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587 } |
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588 } |
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589 else if (cellstr.numel () == cellpat.numel ()) |
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590 { |
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591 if (cellstr.dims () != cellpat.dims ()) |
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592 error ("%s: inconsistent cell array dimensions", who.c_str ()); |
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593 |
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594 for (int j = 0; j < nargout; j++) |
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595 newretval[j].resize (cellstr.dims ()); |
6361 | 596 |
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597 for (octave_idx_type i = 0; i < cellstr.numel (); i++) |
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598 { |
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599 new_args(0) = cellstr(i); |
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600 new_args(1) = cellpat(i); |
6361 | 601 |
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602 octave_value_list tmp = octregexp (new_args, nargout, who, |
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603 case_insensitive); |
6361 | 604 |
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605 for (int j = 0; j < nargout; j++) |
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606 newretval[j](i) = tmp(j); |
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607 } |
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608 } |
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609 else |
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610 error ("regexp: cell array arguments must be scalar or equal size"); |
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611 } |
6361 | 612 else |
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613 { |
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614 for (int j = 0; j < nargout; j++) |
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615 newretval[j].resize (cellstr.dims ()); |
6361 | 616 |
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617 for (octave_idx_type i = 0; i < cellstr.numel (); i++) |
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618 { |
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619 new_args(0) = cellstr(i); |
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620 octave_value_list tmp = octregexp (new_args, nargout, who, |
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621 case_insensitive); |
6361 | 622 |
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623 for (int j = 0; j < nargout; j++) |
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624 newretval[j](i) = tmp(j); |
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625 } |
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626 } |
6361 | 627 |
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628 for (int j = 0; j < nargout; j++) |
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629 retval(j) = octave_value (newretval[j]); |
6361 | 630 } |
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631 else if (args(1).iscell ()) |
6361 | 632 { |
633 OCTAVE_LOCAL_BUFFER (Cell, newretval, nargout); | |
634 octave_value_list new_args = args; | |
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635 Cell cellpat = args(1).cell_value (); |
6361 | 636 |
637 for (int j = 0; j < nargout; j++) | |
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638 newretval[j].resize (cellpat.dims ()); |
6361 | 639 |
640 for (octave_idx_type i = 0; i < cellpat.numel (); i++) | |
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641 { |
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642 new_args(1) = cellpat(i); |
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643 octave_value_list tmp = octregexp (new_args, nargout, who, |
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644 case_insensitive); |
6361 | 645 |
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646 for (int j = 0; j < nargout; j++) |
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647 newretval[j](i) = tmp(j); |
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648 } |
6361 | 649 |
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650 for (int j = 0; j < nargout; j++) |
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651 retval(j) = octave_value (newretval[j]); |
6361 | 652 } |
653 else | |
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654 retval = octregexp (args, nargout, who, case_insensitive); |
6361 | 655 |
656 return retval; | |
657 | |
658 } | |
659 | |
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660 DEFUN (regexp, args, nargout, |
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661 doc: /* -*- texinfo -*- |
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662 @deftypefn {} {[@var{s}, @var{e}, @var{te}, @var{m}, @var{t}, @var{nm}, @var{sp}] =} regexp (@var{str}, @var{pat}) |
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663 @deftypefnx {} {[@dots{}] =} regexp (@var{str}, @var{pat}, "@var{opt1}", @dots{}) |
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664 Regular expression string matching. |
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665 |
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666 Search for @var{pat} in @var{str} and return the positions and substrings of |
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667 any matches, or empty values if there are none. |
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668 |
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669 The matched pattern @var{pat} can include any of the standard regex |
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670 operators, including: |
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671 |
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672 @table @code |
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673 @item . |
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674 Match any character |
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675 |
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676 @item * + ? @{@} |
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677 Repetition operators, representing |
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678 |
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679 @table @code |
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680 @item * |
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681 Match zero or more times |
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682 |
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683 @item + |
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684 Match one or more times |
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685 |
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686 @item ? |
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687 Match zero or one times |
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688 |
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689 @item @{@var{n}@} |
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690 Match exactly @var{n} times |
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691 |
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692 @item @{@var{n},@} |
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693 Match @var{n} or more times |
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694 |
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695 @item @{@var{m},@var{n}@} |
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696 Match between @var{m} and @var{n} times |
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697 @end table |
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698 |
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699 @item [@dots{}] [^@dots{}] |
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700 |
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701 List operators. The pattern will match any character listed between |
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702 @qcode{"["} and @qcode{"]"}. If the first character is @qcode{"^"} then the |
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703 pattern is inverted and any character except those listed between brackets |
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704 will match. |
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705 |
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706 Escape sequences defined below can also be used inside list operators. For |
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707 example, a template for a floating point number might be @code{[-+.\d]+}. |
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708 |
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709 @item () (?:) |
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710 Grouping operator. The first form, parentheses only, also creates a token. |
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711 |
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712 @item | |
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713 Alternation operator. Match one of a choice of regular expressions. The |
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714 alternatives must be delimited by the grouping operator @code{()} above. |
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715 |
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716 @item ^ $ |
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717 Anchoring operators. Requires pattern to occur at the start (@code{^}) or |
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718 end (@code{$}) of the string. |
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719 @end table |
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720 |
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721 In addition, the following escaped characters have special meaning. |
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722 |
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723 @table @code |
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724 |
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725 @item \d |
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726 Match any digit |
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727 |
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728 @item \D |
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729 Match any non-digit |
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730 |
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731 @item \s |
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732 Match any whitespace character |
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733 |
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734 @item \S |
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735 Match any non-whitespace character |
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736 |
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737 @item \w |
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738 Match any word character |
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739 |
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740 @item \W |
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741 Match any non-word character |
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742 |
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743 @item \< |
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744 Match the beginning of a word |
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745 |
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746 @item \> |
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747 Match the end of a word |
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748 |
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749 @item \B |
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750 Match within a word |
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751 @end table |
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752 |
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753 Implementation Note: For compatibility with @sc{matlab}, escape sequences |
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754 in @var{pat} (e.g., @qcode{"@xbackslashchar{}n"} => newline) are expanded |
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755 even when @var{pat} has been defined with single quotes. To disable |
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756 expansion use a second backslash before the escape sequence (e.g., |
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757 "@xbackslashchar{}@xbackslashchar{}n") or use the @code{regexptranslate} |
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758 function. |
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759 |
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760 The outputs of @code{regexp} default to the order given below |
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761 |
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762 @table @var |
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763 @item s |
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764 The start indices of each matching substring |
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765 |
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766 @item e |
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767 The end indices of each matching substring |
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768 |
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769 @item te |
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770 The extents of each matched token surrounded by @code{(@dots{})} in |
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771 @var{pat} |
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772 |
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773 @item m |
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774 A cell array of the text of each match |
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775 |
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776 @item t |
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777 A cell array of the text of each token matched |
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778 |
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779 @item nm |
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780 A structure containing the text of each matched named token, with the name |
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781 being used as the fieldname. A named token is denoted by |
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782 @code{(?<name>@dots{})}. |
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783 |
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784 @item sp |
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785 A cell array of the text not returned by match, i.e., what remains if you |
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786 split the string based on @var{pat}. |
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787 @end table |
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788 |
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789 Particular output arguments, or the order of the output arguments, can be |
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790 selected by additional @var{opt} arguments. These are strings and the |
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791 correspondence between the output arguments and the optional argument |
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792 are |
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793 |
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794 @multitable @columnfractions 0.2 0.3 0.3 0.2 |
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795 @item @tab @qcode{'start'} @tab @var{s} @tab |
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796 @item @tab @qcode{'end'} @tab @var{e} @tab |
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797 @item @tab @qcode{'tokenExtents'} @tab @var{te} @tab |
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798 @item @tab @qcode{'match'} @tab @var{m} @tab |
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799 @item @tab @qcode{'tokens'} @tab @var{t} @tab |
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800 @item @tab @qcode{'names'} @tab @var{nm} @tab |
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801 @item @tab @qcode{'split'} @tab @var{sp} @tab |
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802 @end multitable |
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803 |
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804 Additional arguments are summarized below. |
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805 |
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806 @table @samp |
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807 @item once |
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808 Return only the first occurrence of the pattern. |
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809 |
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810 @item matchcase |
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811 Make the matching case sensitive. (default) |
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812 |
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813 Alternatively, use (?-i) in the pattern. |
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814 |
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815 @item ignorecase |
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816 Ignore case when matching the pattern to the string. |
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817 |
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818 Alternatively, use (?i) in the pattern. |
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819 |
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820 @item stringanchors |
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821 Match the anchor characters at the beginning and end of the string. |
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822 (default) |
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823 |
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824 Alternatively, use (?-m) in the pattern. |
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825 |
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826 @item lineanchors |
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827 Match the anchor characters at the beginning and end of the line. |
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828 |
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829 Alternatively, use (?m) in the pattern. |
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830 |
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831 @item dotall |
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832 The pattern @code{.} matches all characters including the newline character. |
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833 (default) |
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834 |
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835 Alternatively, use (?s) in the pattern. |
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836 |
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837 @item dotexceptnewline |
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838 The pattern @code{.} matches all characters except the newline character. |
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839 |
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840 Alternatively, use (?-s) in the pattern. |
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841 |
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842 @item literalspacing |
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843 All characters in the pattern, including whitespace, are significant and are |
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844 used in pattern matching. (default) |
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845 |
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846 Alternatively, use (?-x) in the pattern. |
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847 |
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848 @item freespacing |
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849 The pattern may include arbitrary whitespace and also comments beginning |
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850 with the character @samp{#}. |
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851 |
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852 Alternatively, use (?x) in the pattern. |
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853 |
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854 @item noemptymatch |
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855 Zero-length matches are not returned. (default) |
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856 |
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857 @item emptymatch |
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858 Return zero-length matches. |
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859 |
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860 @code{regexp ('a', 'b*', 'emptymatch')} returns @code{[1 2]} because there |
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861 are zero or more @qcode{'b'} characters at positions 1 and end-of-string. |
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862 |
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863 @end table |
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864 |
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865 Stack Limitation Note: Pattern searches are done with a recursive function |
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866 which can overflow the program stack when there are a high number of matches. |
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867 For example, |
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868 |
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869 @example |
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870 @code{regexp (repmat ('a', 1, 1e5), '(a)+')} |
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871 @end example |
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872 |
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873 @noindent |
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874 may lead to a segfault. As an alternative, consider constructing pattern |
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875 searches that reduce the number of matches (e.g., by creatively using set |
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876 complement), and then further processing the return variables (now reduced in |
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877 size) with successive @code{regexp} searches. |
21966
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878 @seealso{regexpi, strfind, regexprep} |
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move docstrings in C++ files out of C strings and into comments
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879 @end deftypefn */) |
5582 | 880 { |
20821
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881 if (args.length () < 2) |
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|
882 print_usage (); |
13227
9559417aa965
maint: regexp.cc style fixes
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|
883 |
20821
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|
884 octave_value_list retval; |
20801
a542a9bf177e
eliminate return statements after calls to print_usage
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|
885 |
23576
00e518162fda
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|
886 if (args(0).iscell () || args(1).iscell ()) |
23450
855122b993da
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887 retval = (octcellregexp (args, (nargout > 0 ? nargout : 1), "regexp")); |
6361 | 888 else |
14024
fc9f204faea0
refactor regexp (bug #34440)
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|
889 retval = octregexp (args, nargout, "regexp"); |
6361 | 890 |
891 return retval; | |
5582 | 892 } |
893 | |
894 /* | |
8140
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Increase pcre's match_limit for difficult regexps
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|
895 ## PCRE_ERROR_MATCHLIMIT test |
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896 %!test |
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897 %! s = sprintf ('\t4\n0000\t-0.00\t-0.0000\t4\t-0.00\t-0.0000\t4\n0000\t-0.00\t-0.0000\t0\t-0.00\t-'); |
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898 %! ws = warning ("query"); |
8140
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899 %! unwind_protect |
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900 %! warning ("off"); |
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901 %! regexp (s, '(\s*-*\d+[.]*\d*\s*)+\n'); |
8140
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902 %! unwind_protect_cleanup |
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903 %! warning (ws); |
8140
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|
904 %! end_unwind_protect |
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905 |
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906 ## segfault test |
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907 %!assert (regexp ("abcde", "."), [1,2,3,4,5]) |
13759
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908 ## Infinite loop test |
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909 %!assert (isempty (regexp ("abcde", ""))) |
5582 | 910 |
911 ## Check that anchoring of pattern works correctly | |
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912 %!assert (regexp ('abcabc', '^abc'), 1) |
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913 %!assert (regexp ('abcabc', 'abc$'), 4) |
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914 %!assert (regexp ('abcabc', '^abc$'), zeros (1,0)) |
5582 | 915 |
916 %!test | |
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917 %! [s, e, te, m, t] = regexp (' No Match ', 'f(.*)uck'); |
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918 %! assert (s, zeros (1,0)); |
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919 %! assert (e, zeros (1,0)); |
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920 %! assert (te, cell (1,0)); |
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921 %! assert (m, cell (1,0)); |
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922 %! assert (t, cell (1,0)); |
5582 | 923 |
924 %!test | |
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925 %! [s, e, te, m, t] = regexp (' FiRetrUck ', 'f(.*)uck'); |
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|
926 %! assert (s, zeros (1,0)); |
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|
927 %! assert (e, zeros (1,0)); |
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|
928 %! assert (te, cell (1,0)); |
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|
929 %! assert (m, cell (1,0)); |
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930 %! assert (t, cell (1,0)); |
5582 | 931 |
932 %!test | |
14501
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|
933 %! [s, e, te, m, t] = regexp (' firetruck ', 'f(.*)uck'); |
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|
934 %! assert (s, 2); |
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|
935 %! assert (e, 10); |
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|
936 %! assert (te{1}, [3, 7]); |
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937 %! assert (m{1}, 'firetruck'); |
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|
938 %! assert (t{1}{1}, 'iretr'); |
5582 | 939 |
940 %!test | |
14501
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|
941 %! [s, e, te, m, t] = regexp ('short test string', '\w*r\w*'); |
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|
942 %! assert (s, [1, 12]); |
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|
943 %! assert (e, [5, 17]); |
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|
944 %! assert (size (te), [1, 2]); |
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|
945 %! assert (isempty (te{1})); |
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|
946 %! assert (isempty (te{2})); |
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|
947 %! assert (m{1}, 'short'); |
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|
948 %! assert (m{2}, 'string'); |
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|
949 %! assert (size (t), [1, 2]); |
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|
950 %! assert (isempty (t{1})); |
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|
951 %! assert (isempty (t{2})); |
5582 | 952 |
953 %!test | |
14501
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|
954 %! [s, e, te, m, t] = regexp ('short test string', '\w*r\w*', 'once'); |
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|
955 %! assert (s, 1); |
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|
956 %! assert (e, 5); |
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|
957 %! assert (isempty (te)); |
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958 %! assert (m, 'short'); |
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|
959 %! assert (isempty (t)); |
5582 | 960 |
961 %!test | |
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|
962 %! [m, te, e, s, t] = regexp ('short test string', '\w*r\w*', 'once', 'match', 'tokenExtents', 'end', 'start', 'tokens'); |
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963 %! assert (s, 1); |
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|
964 %! assert (e, 5); |
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|
965 %! assert (isempty (te)); |
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|
966 %! assert (m, 'short'); |
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|
967 %! assert (isempty (t)); |
5582 | 968 |
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|
969 %!test |
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970 %! [s, e, te, m, t, nm] = regexp ('short test string', '(?<word1>\w*t)\s*(?<word2>\w*t)'); |
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|
971 %! assert (s, 1); |
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|
972 %! assert (e, 10); |
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|
973 %! assert (size (te), [1, 1]); |
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974 %! assert (te{1}, [1,5; 7,10]); |
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|
975 %! assert (m{1}, 'short test'); |
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|
976 %! assert (size (t), [1, 1]); |
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|
977 %! assert (t{1}{1}, 'short'); |
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978 %! assert (t{1}{2}, 'test'); |
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|
979 %! assert (size (nm), [1, 1]); |
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980 %! assert (! isempty (fieldnames (nm))); |
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981 %! assert (sort (fieldnames (nm)), {'word1';'word2'}); |
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|
982 %! assert (nm.word1, 'short'); |
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983 %! assert (nm.word2, 'test'); |
5582 | 984 |
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|
985 %!test |
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986 %! [nm, m, te, e, s, t] = regexp ('short test string', '(?<word1>\w*t)\s*(?<word2>\w*t)', 'names', 'match', 'tokenExtents', 'end', 'start', 'tokens'); |
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987 %! assert (s, 1); |
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988 %! assert (e, 10); |
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989 %! assert (size (te), [1, 1]); |
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990 %! assert (te{1}, [1,5; 7,10]); |
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991 %! assert (m{1}, 'short test'); |
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992 %! assert (size (t), [1, 1]); |
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993 %! assert (t{1}{1}, 'short'); |
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994 %! assert (t{1}{2}, 'test'); |
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995 %! assert (size (nm), [1, 1]); |
20955
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996 %! assert (! isempty (fieldnames (nm))); |
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997 %! assert (sort (fieldnames (nm)), {'word1';'word2'}); |
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998 %! assert (nm.word1, 'short'); |
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|
999 %! assert (nm.word2, 'test'); |
5619 | 1000 |
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e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
Rik <octave@nomad.inbox5.com>
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diff
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|
1001 %!test |
14501
60e5cf354d80
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Rik <octave@nomad.inbox5.com>
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diff
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|
1002 %! [t, nm] = regexp ("John Davis\nRogers, James", '(?<first>\w+)\s+(?<last>\w+)|(?<last>\w+),\s+(?<first>\w+)', 'tokens', 'names'); |
60e5cf354d80
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Rik <octave@nomad.inbox5.com>
parents:
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diff
changeset
|
1003 %! assert (size (t), [1, 2]); |
23019
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
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22862
diff
changeset
|
1004 %! assert (t{1}{1}, "John"); |
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
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22862
diff
changeset
|
1005 %! assert (t{1}{2}, "Davis"); |
cb09392b5b1c
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Rik <rik@octave.org>
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22862
diff
changeset
|
1006 %! assert (t{2}{1}, "Rogers"); |
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
parents:
22862
diff
changeset
|
1007 %! assert (t{2}{2}, "James"); |
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
parents:
22862
diff
changeset
|
1008 %! assert (size (nm), [1, 2]); |
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
parents:
22862
diff
changeset
|
1009 %! assert (nm(1).first, "John"); |
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
parents:
22862
diff
changeset
|
1010 %! assert (nm(1).last, "Davis"); |
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
parents:
22862
diff
changeset
|
1011 %! assert (nm(2).first, "James"); |
cb09392b5b1c
Return struct array for 'names' option of regexp (bug #49659).
Rik <rik@octave.org>
parents:
22862
diff
changeset
|
1012 %! assert (nm(2).last, "Rogers"); |
5582 | 1013 |
24741
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1014 ## Tests for nulls in strings properly matching |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1015 %!test |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1016 %! str = "A\0B\0\0C"; |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1017 %! ptn = '(\0+)'; # also test null in single-quote pattern |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1018 %! M = regexp (str, ptn, "match"); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1019 %! assert (size (M), [1, 2]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1020 %! assert (double (M{1}), [0]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1021 %! assert (double (M{2}), [0, 0]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1022 |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1023 %!test |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1024 %! str = "A\0B\0\0C"; |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1025 %! ptn = "(\0+)"; # also test null in double-quote pattern |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1026 %! T = regexp (str, ptn, "tokens"); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1027 %! assert (size (T), [1, 2]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1028 %! assert (double (T{1}{1}), [0]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1029 %! assert (double (T{2}{1}), [0, 0]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1030 |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1031 %!test |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1032 %! str = "A\0B\0\0C"; |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1033 %! ptn = '(?<namedtoken>\0+)'; |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1034 %! NT = regexp (str, ptn, "names"); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1035 %! assert (size (NT), [1, 2]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1036 %! assert (double (NT(1).namedtoken), [0]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1037 %! assert (double (NT(2).namedtoken), [0, 0]); |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1038 |
14452
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1039 ## Tests for named tokens |
12462
e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
Rik <octave@nomad.inbox5.com>
parents:
12433
diff
changeset
|
1040 %!test |
17336
b81b9d079515
Use '##' for comments which stand alone on a line.
Rik <rik@octave.org>
parents:
17281
diff
changeset
|
1041 %! ## Parenthesis in named token (ie (int)) causes a problem |
24741
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1042 %! assert (regexp ('qwe int asd', ['(?<typestr>(int))'], 'names'), |
00dfa167c1fe
Fix handling of NULL character in regular expressions for Matlab compatibility.
Rik <rik@octave.org>
parents:
24607
diff
changeset
|
1043 %! struct ('typestr', 'int')); |
10518
fcafe0e9bd58
Handle repeated matches in matches returned by pcre
David Bateman <dbateman@free.fr>
parents:
10504
diff
changeset
|
1044 |
23573
1b4f4ec53b4a
use new script to tag fixed bugs in tests
John W. Eaton <jwe@octave.org>
parents:
23572
diff
changeset
|
1045 %!test <*35683> |
22489
93ea313301f9
test: Add bug ids (<#####>) to BIST tests.
Rik <rik@octave.org>
parents:
22407
diff
changeset
|
1046 %! ## Mix of named and unnamed tokens can cause segfault |
14452
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1047 %! str = "abcde"; |
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1048 %! ptn = '(?<T1>a)(\w+)(?<T2>d\w+)'; |
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1049 %! tokens = regexp (str, ptn, "names"); |
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1050 %! assert (isstruct (tokens) && numel (tokens) == 1); |
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1051 %! assert (tokens.T1, "a"); |
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1052 %! assert (tokens.T2, "de"); |
721be41ea988
Stop segfault when using regular expressions with named capture buffers (bug #35683).
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
1053 |
24751
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
Rik <rik@octave.org>
parents:
24741
diff
changeset
|
1054 ## Test options to regexp |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1055 %!assert (regexp ("abc\nabc", '.'), [1:7]) |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1056 %!assert (regexp ("abc\nabc", '.', 'dotall'), [1:7]) |
12462
e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
Rik <octave@nomad.inbox5.com>
parents:
12433
diff
changeset
|
1057 %!test |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1058 %! assert (regexp ("abc\nabc", '(?s).'), [1:7]); |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1059 %! assert (regexp ("abc\nabc", '.', 'dotexceptnewline'), [1,2,3,5,6,7]); |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1060 %! assert (regexp ("abc\nabc", '(?-s).'), [1,2,3,5,6,7]); |
5779 | 1061 |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1062 %!assert (regexp ("caseCaSe", 'case'), 1) |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1063 %!assert (regexp ("caseCaSe", 'case', "matchcase"), 1) |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1064 %!assert (regexp ("caseCaSe", 'case', "ignorecase"), [1,5]) |
12462
e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
Rik <octave@nomad.inbox5.com>
parents:
12433
diff
changeset
|
1065 %!test |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1066 %! assert (regexp ("caseCaSe", '(?-i)case'), 1); |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1067 %! assert (regexp ("caseCaSe", '(?i)case'), [1, 5]); |
5779 | 1068 |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1069 %!assert (regexp ("abc\nabc", 'c$'), 7) |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1070 %!assert (regexp ("abc\nabc", 'c$', "stringanchors"), 7) |
12462
e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
Rik <octave@nomad.inbox5.com>
parents:
12433
diff
changeset
|
1071 %!test |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1072 %! assert (regexp ("abc\nabc", '(?-m)c$'), 7); |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1073 %! assert (regexp ("abc\nabc", 'c$',"lineanchors"), [3, 7]); |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1074 %! assert (regexp ("abc\nabc", '(?m)c$'), [3,7]); |
5779 | 1075 |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1076 %!assert (regexp ("this word", 's w'), 4) |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1077 %!assert (regexp ("this word", 's w', 'literalspacing'), 4) |
12462
e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
Rik <octave@nomad.inbox5.com>
parents:
12433
diff
changeset
|
1078 %!test |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1079 %! assert (regexp ("this word", '(?-x)s w', 'literalspacing'), 4); |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1080 %! assert (regexp ("this word", 's w', 'freespacing'), zeros (1,0)); |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14496
diff
changeset
|
1081 %! assert (regexp ("this word", '(?x)s w'), zeros (1,0)); |
5779 | 1082 |
14536
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1083 %!test |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1084 %! [s, e, te, m, t, nm, sp] = regexp ('OCTAVE', '[VOCT]*', 'noemptymatch'); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1085 %! assert (s, [1 5]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1086 %! assert (e, [3 5]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1087 %! assert (te, { zeros(0,2), zeros(0,2) }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1088 %! assert (m, { "OCT", "V" }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1089 %! assert (t, { cell(1,0), cell(1,0) }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1090 %! assert (isempty (fieldnames (nm))); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1091 %! assert (sp, { "", "A", "E" }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1092 |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1093 %!test |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1094 %! [s, e, te, m, t, nm, sp] = regexp ('OCTAVE', '([VOCT]*)', 'noemptymatch'); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1095 %! assert (s, [1 5]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1096 %! assert (e, [3 5]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1097 %! assert (te, { [1 3], [5 5] }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1098 %! assert (m, { "OCT", "V" }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1099 %! assert (t, { {"OCT"}, {"V"} }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1100 %! assert (isempty (fieldnames (nm))); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1101 %! assert (sp, { "", "A", "E" }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1102 |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1103 %!test |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1104 %! [s, e, te, m, t, nm, sp] = regexp ('OCTAVE', '[VOCT]*', 'emptymatch'); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
14501
diff
changeset
|
1105 %! assert (s, [1 4 5 6 7]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
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|
1106 %! assert (e, [3 3 5 5 6]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
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|
1107 %! assert (te, repmat ({zeros(0,2)}, [1, 5])); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
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|
1108 %! assert (m, { "OCT", "", "V", "", "" }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
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parents:
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changeset
|
1109 %! assert (t, repmat({cell(1,0)}, [1, 5])); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
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|
1110 %! assert (isempty (fieldnames (nm))); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
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|
1111 %! assert (sp, { "", "", "A", "", "E", "" }); |
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|
1112 |
6d5c951ec520
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|
1113 %!test |
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Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
parents:
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|
1114 %! [s, e, te, m, t, nm, sp] = regexp ('OCTAVE', '([VOCT]*)', 'emptymatch'); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
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parents:
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|
1115 %! assert (s, [1 4 5 6 7]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
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|
1116 %! assert (e, [3 3 5 5 6]); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
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|
1117 %! assert (te, { [1 3], [4 3], [5 5], [6 5], [7 6] }); |
6d5c951ec520
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|
1118 %! assert (m, { "OCT", "", "V", "", "" }); |
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Add 'emptymatch', 'noemptymatch' options to regular expressions.
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|
1119 %! assert (t, { {"OCT"}, {""}, {"V"}, {""}, {""} }); |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
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|
1120 %! assert (isempty (fieldnames (nm))); |
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|
1121 %! assert (sp, { "", "", "A", "", "E", "" }); |
6d5c951ec520
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|
1122 |
14501
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1123 %!assert (regexp ({'asdfg-dfd';'-dfd-dfd-';'qasfdfdaq'}, '-'), {6;[1,5,9];zeros(1,0)}) |
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|
1124 %!assert (regexp ({'asdfg-dfd';'-dfd-dfd-';'qasfdfdaq'}, {'-';'f';'q'}), {6;[3,7];[1,9]}) |
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1125 %!assert (regexp ('Strings', {'t','s'}), {2, 7}) |
6361 | 1126 |
8093
dcc31f473596
Treat PCRE lookbehind operators in a manner that is approximately correct
David Bateman <dbateman@free.fr>
parents:
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|
1127 ## Test case for lookaround operators |
12462
e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
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|
1128 %!test |
14501
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1129 %! assert (regexp ('Iraq', 'q(?!u)'), 4); |
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|
1130 %! assert (regexp ('quit', 'q(?!u)'), zeros (1, 0)); |
60e5cf354d80
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|
1131 %! assert (regexp ('quit', 'q(?=u)' , 'match'), {'q'}); |
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|
1132 %! assert (regexp ("quit", 'q(?=u+)', 'match'), {'q'}); |
60e5cf354d80
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|
1133 %! assert (regexp ("qit", 'q(?=u+)', 'match'), cell (1, 0)); |
60e5cf354d80
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|
1134 %! assert (regexp ("qit", 'q(?=u*)', 'match'), {'q'}); |
60e5cf354d80
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|
1135 %! assert (regexp ('thingamabob', '(?<=a)b'), 9); |
8093
dcc31f473596
Treat PCRE lookbehind operators in a manner that is approximately correct
David Bateman <dbateman@free.fr>
parents:
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|
1136 |
13310
583940a28bfd
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|
1137 ## Tests for split option. |
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|
1138 %!shared str |
583940a28bfd
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|
1139 %! str = "foo bar foo"; |
583940a28bfd
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diff
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|
1140 %!test |
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|
1141 %! [a, b] = regexp (str, "f..", "match", "split"); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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|
1142 %! assert (a, {"foo", "foo"}); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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diff
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|
1143 %! assert (b, {"", " bar ", ""}); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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|
1144 %!test |
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John W. Eaton <jwe@octave.org>
parents:
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diff
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|
1145 %! [a, b] = regexp (str, "f..", "match", "split", "once"); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
parents:
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|
1146 %! assert (a, "foo"); |
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|
1147 %! assert (b, {"", " bar foo"}); |
583940a28bfd
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diff
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|
1148 %!test |
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John W. Eaton <jwe@octave.org>
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|
1149 %! [a, b] = regexp (str, "fx.", "match", "split"); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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|
1150 %! assert (a, cell (1, 0)); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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|
1151 %! assert (b, {"foo bar foo"}); |
583940a28bfd
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diff
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|
1152 %!test |
583940a28bfd
handle "split" option for regexp
John W. Eaton <jwe@octave.org>
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diff
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|
1153 %! [a, b] = regexp (str, "fx.", "match", "split", "once"); |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
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|
1154 %! assert (a, "");; |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
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|
1155 %! assert (b, "foo bar foo"); |
13310
583940a28bfd
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John W. Eaton <jwe@octave.org>
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diff
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|
1156 |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
1157 %!shared str |
583940a28bfd
handle "split" option for regexp
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|
1158 %! str = "foo bar"; |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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|
1159 %!test |
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John W. Eaton <jwe@octave.org>
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|
1160 %! [a, b] = regexp (str, "f..", "match", "split"); |
583940a28bfd
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|
1161 %! assert (a, {"foo"}); |
583940a28bfd
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|
1162 %! assert (b, {"", " bar"}); |
583940a28bfd
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diff
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|
1163 %!test |
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John W. Eaton <jwe@octave.org>
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|
1164 %! [a, b] = regexp (str, "b..", "match", "split"); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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|
1165 %! assert (a, {"bar"}); |
583940a28bfd
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|
1166 %! assert (b, {"foo ", ""}); |
583940a28bfd
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|
1167 %!test |
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|
1168 %! [a, b] = regexp (str, "x", "match", "split"); |
583940a28bfd
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|
1169 %! assert (a, cell (1, 0)); |
583940a28bfd
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John W. Eaton <jwe@octave.org>
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|
1170 %! assert (b, {"foo bar"}); |
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|
1171 %!test |
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|
1172 %! [a, b] = regexp (str, "[o]+", "match", "split"); |
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|
1173 %! assert (a, {"oo"}); |
583940a28bfd
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|
1174 %! assert (b, {"f", " bar"}); |
14543
e47d929fde8f
process backslash string escapes in regexp pattern and regexprep replacement (bug #35911)
John W. Eaton <jwe@octave.org>
parents:
14536
diff
changeset
|
1175 |
24751
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
Rik <rik@octave.org>
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24741
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|
1176 ## Test escape sequences are expanded even in single-quoted strings |
21317
a4faec57f4c8
maint: remove semicolon after %!assert tests to follow Octave conventions.
Rik <rik@octave.org>
parents:
21301
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|
1177 %!assert (regexp ("\n", '\n'), 1) |
a4faec57f4c8
maint: remove semicolon after %!assert tests to follow Octave conventions.
Rik <rik@octave.org>
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21301
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|
1178 %!assert (regexp ("\n", "\n"), 1) |
20290
b6a59cc96bfa
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Rik <rik@octave.org>
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20232
diff
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|
1179 |
22489
93ea313301f9
test: Add bug ids (<#####>) to BIST tests.
Rik <rik@octave.org>
parents:
22407
diff
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|
1180 # Test escape sequences are silently converted |
23573
1b4f4ec53b4a
use new script to tag fixed bugs in tests
John W. Eaton <jwe@octave.org>
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23572
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|
1181 %!test <*45407> |
20290
b6a59cc96bfa
Process backslashes in regexprep replacement strings in Matlab compatible fashion (bug #45407).
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|
1182 %! assert (regexprep ('s', 's', 'x\.y'), 'x.y'); |
b6a59cc96bfa
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|
1183 %! assert (regexprep ('s', '(s)', 'x\$1y'), 'x$1y'); |
b6a59cc96bfa
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|
1184 %! assert (regexprep ('s', '(s)', 'x\\$1y'), 'x\sy'); |
b6a59cc96bfa
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Rik <rik@octave.org>
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|
1185 |
24751
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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|
1186 ## Test input validation |
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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|
1187 %!error regexp ('string', 'tri', 'BadArg') |
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Expand octal sequences in regexprep replacement string for Matlab compatibility.
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|
1188 %!error regexp ('string') |
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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|
1189 |
5582 | 1190 */ |
1191 | |
15039
e753177cde93
maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
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14854
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|
1192 DEFUN (regexpi, args, nargout, |
21966
112b20240c87
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|
1193 doc: /* -*- texinfo -*- |
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|
1194 @deftypefn {} {[@var{s}, @var{e}, @var{te}, @var{m}, @var{t}, @var{nm}, @var{sp}] =} regexpi (@var{str}, @var{pat}) |
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|
1195 @deftypefnx {} {[@dots{}] =} regexpi (@var{str}, @var{pat}, "@var{opt1}", @dots{}) |
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|
1196 |
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|
1197 Case insensitive regular expression string matching. |
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|
1198 |
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|
1199 Search for @var{pat} in @var{str} and return the positions and substrings of |
112b20240c87
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|
1200 any matches, or empty values if there are none. @xref{XREFregexp,,regexp}, |
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|
1201 for details on the syntax of the search pattern. |
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|
1202 @seealso{regexp} |
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|
1203 @end deftypefn */) |
5582 | 1204 { |
20821
b169da150702
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20819
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|
1205 if (args.length () < 2) |
b169da150702
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|
1206 print_usage (); |
13227
9559417aa965
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John W. Eaton <jwe@octave.org>
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|
1207 |
23576
00e518162fda
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Rik <rik@octave.org>
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23573
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|
1208 if (args(0).iscell () || args(1).iscell ()) |
20939
b17fda023ca6
maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
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|
1209 return octcellregexp (args, (nargout > 0 ? nargout : 1), "regexpi", true); |
6361 | 1210 else |
20939
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|
1211 return octregexp (args, nargout, "regexpi", true); |
5582 | 1212 } |
1213 | |
1214 /* | |
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|
1215 ## segfault test |
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|
1216 %!assert (regexpi ("abcde", "."), [1,2,3,4,5]) |
5582 | 1217 |
1218 ## Check that anchoring of pattern works correctly | |
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|
1219 %!assert (regexpi ('abcabc', '^ABC'), 1) |
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1220 %!assert (regexpi ('abcabc', 'ABC$'), 4) |
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1221 %!assert (regexpi ('abcabc', '^ABC$'), zeros (1,0)) |
5582 | 1222 |
1223 %!test | |
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1224 %! [s, e, te, m, t] = regexpi (' No Match ', 'f(.*)uck'); |
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1225 %! assert (s, zeros (1,0)); |
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1226 %! assert (e, zeros (1,0)); |
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1227 %! assert (te, cell (1,0)); |
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1228 %! assert (m, cell (1,0)); |
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1229 %! assert (t, cell (1,0)); |
5582 | 1230 |
1231 %!test | |
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1232 %! [s, e, te, m, t] = regexpi (' FiRetrUck ', 'f(.*)uck'); |
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1233 %! assert (s, 2); |
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1234 %! assert (e, 10); |
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1235 %! assert (te{1}, [3, 7]); |
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1236 %! assert (m{1}, 'FiRetrUck'); |
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1237 %! assert (t{1}{1}, 'iRetr'); |
5582 | 1238 |
1239 %!test | |
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1240 %! [s, e, te, m, t] = regexpi (' firetruck ', 'f(.*)uck'); |
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1241 %! assert (s, 2); |
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1242 %! assert (e, 10); |
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1243 %! assert (te{1}, [3, 7]); |
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1244 %! assert (m{1}, 'firetruck'); |
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1245 %! assert (t{1}{1}, 'iretr'); |
5582 | 1246 |
1247 %!test | |
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1248 %! [s, e, te, m, t] = regexpi ('ShoRt Test String', '\w*r\w*'); |
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1249 %! assert (s, [1, 12]); |
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1250 %! assert (e, [5, 17]); |
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1251 %! assert (size (te), [1, 2]); |
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1252 %! assert (isempty (te{1})); |
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1253 %! assert (isempty (te{2})); |
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1254 %! assert (m{1}, 'ShoRt'); |
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1255 %! assert (m{2}, 'String'); |
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1256 %! assert (size (t), [1, 2]); |
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1257 %! assert (isempty (t{1})); |
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1258 %! assert (isempty (t{2})); |
5582 | 1259 |
1260 %!test | |
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1261 %! [s, e, te, m, t] = regexpi ('ShoRt Test String', '\w*r\w*', 'once'); |
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1262 %! assert (s, 1); |
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1263 %! assert (e, 5); |
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1264 %! assert (isempty (te)); |
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1265 %! assert (m, 'ShoRt'); |
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1266 %! assert (isempty (t)); |
5582 | 1267 |
1268 %!test | |
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1269 %! [m, te, e, s, t] = regexpi ('ShoRt Test String', '\w*r\w*', 'once', 'match', 'tokenExtents', 'end', 'start', 'tokens'); |
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1270 %! assert (s, 1); |
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1271 %! assert (e, 5); |
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1272 %! assert (isempty (te)); |
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1273 %! assert (m, 'ShoRt'); |
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1274 %! assert (isempty (t)); |
5582 | 1275 |
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1276 %!test |
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1277 %! [s, e, te, m, t, nm] = regexpi ('ShoRt Test String', '(?<word1>\w*t)\s*(?<word2>\w*t)'); |
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1278 %! assert (s, 1); |
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1279 %! assert (e, 10); |
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1280 %! assert (size (te), [1, 1]); |
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1281 %! assert (te{1}, [1,5; 7,10]); |
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1282 %! assert (m{1}, 'ShoRt Test'); |
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1283 %! assert (size (t), [1, 1]); |
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1284 %! assert (t{1}{1}, 'ShoRt'); |
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1285 %! assert (t{1}{2}, 'Test'); |
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1286 %! assert (size (nm), [1, 1]); |
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1287 %! assert (! isempty (fieldnames (nm))); |
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1288 %! assert (sort (fieldnames (nm)), {'word1';'word2'}); |
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1289 %! assert (nm.word1, 'ShoRt'); |
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1290 %! assert (nm.word2, 'Test'); |
5582 | 1291 |
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1292 %!test |
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1293 %! [nm, m, te, e, s, t] = regexpi ('ShoRt Test String', '(?<word1>\w*t)\s*(?<word2>\w*t)', 'names', 'match', 'tokenExtents', 'end', 'start', 'tokens'); |
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1294 %! assert (s, 1); |
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1295 %! assert (e, 10); |
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|
1296 %! assert (size (te), [1, 1]); |
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1297 %! assert (te{1}, [1,5; 7,10]); |
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1298 %! assert (m{1}, 'ShoRt Test'); |
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1299 %! assert (size (t), [1, 1]); |
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1300 %! assert (t{1}{1}, 'ShoRt'); |
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1301 %! assert (t{1}{2}, 'Test'); |
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|
1302 %! assert (size (nm), [1, 1]); |
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1303 %! assert (! isempty (fieldnames (nm))); |
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1304 %! assert (sort (fieldnames (nm)), {'word1';'word2'}); |
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1305 %! assert (nm.word1, 'ShoRt'); |
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1306 %! assert (nm.word2, 'Test'); |
5582 | 1307 |
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1308 %!assert (regexpi ("abc\nabc", '.'), [1:7]) |
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1309 %!assert (regexpi ("abc\nabc", '.', 'dotall'), [1:7]) |
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1310 %!test |
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1311 %! assert (regexpi ("abc\nabc", '(?s).'), [1:7]); |
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1312 %! assert (regexpi ("abc\nabc", '.', 'dotexceptnewline'), [1,2,3,5,6,7]); |
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1313 %! assert (regexpi ("abc\nabc", '(?-s).'), [1,2,3,5,6,7]); |
5779 | 1314 |
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1315 %!assert (regexpi ("caseCaSe", 'case'), [1, 5]) |
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1316 %!assert (regexpi ("caseCaSe", 'case', "matchcase"), 1) |
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1317 %!assert (regexpi ("caseCaSe", 'case', "ignorecase"), [1, 5]) |
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1318 %!test |
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1319 %! assert (regexpi ("caseCaSe", '(?-i)case'), 1); |
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1320 %! assert (regexpi ("caseCaSe", '(?i)case'), [1, 5]); |
5779 | 1321 |
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1322 %!assert (regexpi ("abc\nabc", 'C$'), 7) |
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1323 %!assert (regexpi ("abc\nabc", 'C$', "stringanchors"), 7) |
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1324 %!test |
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1325 %! assert (regexpi ("abc\nabc", '(?-m)C$'), 7); |
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1326 %! assert (regexpi ("abc\nabc", 'C$', "lineanchors"), [3, 7]); |
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1327 %! assert (regexpi ("abc\nabc", '(?m)C$'), [3, 7]); |
5779 | 1328 |
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1329 %!assert (regexpi ("this word", 'S w'), 4) |
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1330 %!assert (regexpi ("this word", 'S w', 'literalspacing'), 4) |
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1331 %!test |
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1332 %! assert (regexpi ("this word", '(?-x)S w', 'literalspacing'), 4); |
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|
1333 %! assert (regexpi ("this word", 'S w', 'freespacing'), zeros (1,0)); |
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|
1334 %! assert (regexpi ("this word", '(?x)S w'), zeros (1,0)); |
5582 | 1335 |
14501
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|
1336 %!error regexpi ('string', 'tri', 'BadArg') |
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|
1337 %!error regexpi ('string') |
6361 | 1338 |
14501
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|
1339 %!assert (regexpi ({'asdfg-dfd';'-dfd-dfd-';'qasfdfdaq'}, '-'), {6;[1,5,9];zeros(1, 0)}) |
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|
1340 %!assert (regexpi ({'asdfg-dfd', '-dfd-dfd-', 'qasfdfdaq'}, '-'), {6, [1,5,9], zeros(1,0)}) |
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|
1341 %!assert (regexpi ({'asdfg-dfd';'-dfd-dfd-';'qasfdfdaq'}, {'-';'f';'q'}), {6;[3,7];[1,9]}) |
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|
1342 %!assert (regexpi ('Strings', {'t', 's'}), {2, [1, 7]}) |
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1343 |
21317
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maint: remove semicolon after %!assert tests to follow Octave conventions.
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|
1344 %!assert (regexpi ("\n", '\n'), 1) |
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Rik <rik@octave.org>
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|
1345 %!assert (regexpi ("\n", "\n"), 1) |
5582 | 1346 */ |
1347 | |
6361 | 1348 static octave_value |
23433
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|
1349 octregexprep (const octave_value_list& args, const std::string& who) |
5785 | 1350 { |
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1351 int nargin = args.length (); |
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1352 |
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|
1353 // Make sure we have string, pattern, replacement |
5785 | 1354 const std::string buffer = args(0).string_value (); |
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1355 |
14543
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|
1356 std::string pattern = args(1).string_value (); |
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1357 |
22722
e6fac42c8d56
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|
1358 // Rewrite pattern for PCRE |
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Fix regexp handling of beginning/end word match for double-quoted pattern strings (bug #49451).
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1359 pattern = do_regexp_ptn_string_escapes (pattern, args(1).is_sq_string ()); |
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1360 |
14543
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|
1361 std::string replacement = args(2).string_value (); |
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1362 |
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|
1363 // Matlab compatibility. |
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|
1364 if (args(2).is_sq_string ()) |
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Rik <rik@octave.org>
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|
1365 replacement = do_regexp_rep_string_escapes (replacement); |
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1366 |
5785 | 1367 // Pack options excluding 'tokenize' and various output |
1368 // reordering strings into regexp arg list | |
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1369 octave_value_list regexpargs (nargin-3, octave_value ()); |
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1370 |
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|
1371 int len = 0; |
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1372 for (int i = 3; i < nargin; i++) |
5785 | 1373 { |
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1374 const std::string opt = args(i).string_value (); |
5785 | 1375 if (opt != "tokenize" && opt != "start" && opt != "end" |
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|
1376 && opt != "tokenextents" && opt != "match" && opt != "tokens" |
13310
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1377 && opt != "names" && opt != "split" && opt != "warnings") |
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1378 { |
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|
1379 regexpargs(len++) = args(i); |
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1380 } |
5785 | 1381 } |
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1382 regexpargs.resize (len); |
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|
1383 |
22333
2758af148ced
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|
1384 octave::regexp::opts options; |
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|
1385 bool extra_args = false; |
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|
1386 parse_options (options, regexpargs, who, 0, extra_args); |
5785 | 1387 |
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1388 return octave::regexp::replace (pattern, buffer, replacement, options, who); |
6361 | 1389 } |
1390 | |
15039
e753177cde93
maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
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|
1391 DEFUN (regexprep, args, , |
21966
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1392 doc: /* -*- texinfo -*- |
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1393 @deftypefn {} {@var{outstr} =} regexprep (@var{string}, @var{pat}, @var{repstr}) |
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|
1394 @deftypefnx {} {@var{outstr} =} regexprep (@var{string}, @var{pat}, @var{repstr}, "@var{opt1}", @dots{}) |
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1395 Replace occurrences of pattern @var{pat} in @var{string} with @var{repstr}. |
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|
1396 |
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|
1397 The pattern is a regular expression as documented for @code{regexp}. |
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|
1398 @xref{XREFregexp,,regexp}. |
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|
1399 |
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|
1400 The replacement string may contain @code{$i}, which substitutes for the ith |
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|
1401 set of parentheses in the match string. For example, |
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|
1402 |
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|
1403 @example |
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move docstrings in C++ files out of C strings and into comments
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|
1404 regexprep ("Bill Dunn", '(\w+) (\w+)', '$2, $1') |
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|
1405 @end example |
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1406 |
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|
1407 @noindent |
22299
9fc91bb2aec3
doc: grammarcheck documentation for 4.2 release.
Rik <rik@octave.org>
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diff
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|
1408 returns @qcode{"Dunn, Bill"} |
21966
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|
1409 |
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|
1410 Options in addition to those of @code{regexp} are |
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1411 |
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1412 @table @samp |
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|
1413 |
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|
1414 @item once |
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1415 Replace only the first occurrence of @var{pat} in the result. |
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1416 |
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|
1417 @item warnings |
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|
1418 This option is present for compatibility but is ignored. |
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1419 |
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1420 @end table |
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1421 |
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|
1422 Implementation Note: For compatibility with @sc{matlab}, escape sequences |
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1423 in @var{pat} (e.g., @qcode{"@xbackslashchar{}n"} => newline) are expanded |
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1424 even when @var{pat} has been defined with single quotes. To disable |
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|
1425 expansion use a second backslash before the escape sequence (e.g., |
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|
1426 "@xbackslashchar{}@xbackslashchar{}n") or use the @code{regexptranslate} |
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|
1427 function. |
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|
1428 @seealso{regexp, regexpi, strrep} |
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|
1429 @end deftypefn */) |
6361 | 1430 { |
20821
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Eliminate unnecessary uses of nargin.
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|
1431 if (args.length () < 3) |
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|
1432 print_usage (); |
6361 | 1433 |
20821
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Eliminate unnecessary uses of nargin.
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|
1434 octave_value_list retval; |
6361 | 1435 |
23576
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|
1436 if (args(0).iscell () || args(1).iscell () || args(2).iscell ()) |
6361 | 1437 { |
20821
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|
1438 Cell str, pat, rep; |
6495 | 1439 dim_vector dv0; |
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|
1440 dim_vector dv1 (1, 1); |
6361 | 1441 |
23576
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|
1442 if (args(0).iscell ()) |
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|
1443 str = args(0).cell_value (); |
6361 | 1444 else |
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|
1445 str = Cell (args(0)); |
6361 | 1446 |
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|
1447 if (args(1).iscell ()) |
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|
1448 pat = args(1).cell_value (); |
6361 | 1449 else |
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1450 pat = Cell (args(1)); |
6361 | 1451 |
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|
1452 if (args(2).iscell ()) |
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1453 rep = args(2).cell_value (); |
6361 | 1454 else |
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1455 rep = Cell (args(2)); |
6361 | 1456 |
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1457 dv0 = str.dims (); |
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|
1458 if (pat.numel () != 1) |
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1459 { |
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|
1460 dv1 = pat.dims (); |
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|
1461 if (rep.numel () != 1 && dv1 != rep.dims ()) |
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|
1462 error ("regexprep: inconsistent cell array dimensions"); |
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1463 } |
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|
1464 else if (rep.numel () != 1) |
9559417aa965
maint: regexp.cc style fixes
John W. Eaton <jwe@octave.org>
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|
1465 dv1 = rep.dims (); |
6361 | 1466 |
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1467 Cell ret (dv0); |
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eliminate more simple uses of error_state
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|
1468 octave_value_list new_args = args; |
13227
9559417aa965
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|
1469 |
20558
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John W. Eaton <jwe@octave.org>
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1470 for (octave_idx_type i = 0; i < dv0.numel (); i++) |
1a0a433c8263
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1471 { |
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|
1472 new_args(0) = str(i); |
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1473 if (pat.numel () == 1) |
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1474 new_args(1) = pat(0); |
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1475 if (rep.numel () == 1) |
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1476 new_args(2) = rep(0); |
6361 | 1477 |
20558
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|
1478 for (octave_idx_type j = 0; j < dv1.numel (); j++) |
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1479 { |
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1480 if (pat.numel () != 1) |
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1481 new_args(1) = pat(j); |
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1482 if (rep.numel () != 1) |
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|
1483 new_args(2) = rep(j); |
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1484 new_args(0) = octregexprep (new_args, "regexprep"); |
10154
40dfc0c99116
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John W. Eaton <jwe@octave.org>
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1485 } |
6361 | 1486 |
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1487 ret(i) = new_args(0); |
10154
40dfc0c99116
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1488 } |
20558
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|
1489 |
23576
00e518162fda
maint: Deprecate is_cell and replace with iscell.
Rik <rik@octave.org>
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23573
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|
1490 retval = (args(0).iscell () ? ovl (ret) : ovl (ret(0))); |
6361 | 1491 } |
1492 else | |
1493 retval = octregexprep (args, "regexprep"); | |
1494 | |
5785 | 1495 return retval; |
1496 } | |
1497 | |
1498 /* | |
1499 %!test # Replace with empty | |
1500 %! xml = '<!-- This is some XML --> <tag v="hello">some stuff<!-- sample tag--></tag>'; | |
14501
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1501 %! t = regexprep (xml, '<[!?][^>]*>', ''); |
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1502 %! assert (t, ' <tag v="hello">some stuff</tag>'); |
5785 | 1503 |
1504 %!test # Replace with non-empty | |
1505 %! xml = '<!-- This is some XML --> <tag v="hello">some stuff<!-- sample tag--></tag>'; | |
14501
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1506 %! t = regexprep (xml, '<[!?][^>]*>', '?'); |
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1507 %! assert (t, '? <tag v="hello">some stuff?</tag>'); |
5785 | 1508 |
1509 %!test # Check that 'tokenize' is ignored | |
1510 %! xml = '<!-- This is some XML --> <tag v="hello">some stuff<!-- sample tag--></tag>'; | |
14501
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1511 %! t = regexprep (xml, '<[!?][^>]*>', '', 'tokenize'); |
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|
1512 %! assert (t, ' <tag v="hello">some stuff</tag>'); |
5785 | 1513 |
11032
c9b0a75b02e8
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Rik <octave@nomad.inbox5.com>
parents:
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|
1514 ## Test capture replacement |
12462
e4dbfe3019b1
Use PCRE regular expressions throughout Octave.
Rik <octave@nomad.inbox5.com>
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12433
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|
1515 %!test |
7242 | 1516 %! data = "Bob Smith\nDavid Hollerith\nSam Jenkins"; |
1517 %! result = "Smith, Bob\nHollerith, David\nJenkins, Sam"; | |
14501
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1518 %! t = regexprep (data, '(?m)^(\w+)\s+(\w+)$', '$2, $1'); |
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1519 %! assert (t, result); |
5785 | 1520 |
11032
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11025
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|
1521 ## Return the original if no match |
14501
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1522 %!assert (regexprep ('hello', 'world', 'earth'), 'hello') |
5785 | 1523 |
24751
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|
1524 ## Test emptymatch option |
14536
6d5c951ec520
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|
1525 %!assert (regexprep ('World', '^', 'Hello '), 'World') |
6d5c951ec520
Add 'emptymatch', 'noemptymatch' options to regular expressions.
Rik <octave@nomad.inbox5.com>
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|
1526 %!assert (regexprep ('World', '^', 'Hello ', 'emptymatch'), 'Hello World') |
6d5c951ec520
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|
1527 |
5785 | 1528 ## Test a general replacement |
14501
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|
1529 %!assert (regexprep ("a[b]c{d}e-f=g", "[^A-Za-z0-9_]", "_"), "a_b_c_d_e_f_g") |
5785 | 1530 |
24751
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|
1531 ## Make sure replacements work at the beginning and end of string |
14501
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|
1532 %!assert (regexprep ("a[b]c{d}e-f=g", "a", "_"), "_[b]c{d}e-f=g") |
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|
1533 %!assert (regexprep ("a[b]c{d}e-f=g", "g", "_"), "a[b]c{d}e-f=_") |
5785 | 1534 |
24751
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|
1535 ## Test options "once" and "ignorecase" |
6e670c58c6f0
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|
1536 %!assert (regexprep ("a[b]c{d}e-f=g", "[^A-Za-z0-9_]", "_", "once"), |
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|
1537 %! "a_b]c{d}e-f=g") |
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|
1538 %!assert (regexprep ("a[b]c{d}e-f=g", "[^A-Z0-9_]", "_", "ignorecase"), |
6e670c58c6f0
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|
1539 %! "a_b_c_d_e_f_g") |
5785 | 1540 |
1541 ## Option combinations | |
24751
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|
1542 %!assert (regexprep ("a[b]c{d}e-f=g", "[^A-Z0-9_]", "_", "once", "ignorecase"), |
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|
1543 %! "a_b]c{d}e-f=g") |
5785 | 1544 |
1545 ## End conditions on replacement | |
21317
a4faec57f4c8
maint: remove semicolon after %!assert tests to follow Octave conventions.
Rik <rik@octave.org>
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21301
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|
1546 %!assert (regexprep ("abc", "(b)", ".$1"), "a.bc") |
a4faec57f4c8
maint: remove semicolon after %!assert tests to follow Octave conventions.
Rik <rik@octave.org>
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|
1547 %!assert (regexprep ("abc", "(b)", "$1"), "abc") |
a4faec57f4c8
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Rik <rik@octave.org>
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|
1548 %!assert (regexprep ("abc", "(b)", "$1."), "ab.c") |
a4faec57f4c8
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|
1549 %!assert (regexprep ("abc", "(b)", "$1.."), "ab..c") |
5785 | 1550 |
6361 | 1551 ## Test cell array arguments |
14501
60e5cf354d80
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|
1552 %!assert (regexprep ("abc", {"b","a"}, "?"), "??c") |
60e5cf354d80
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|
1553 %!assert (regexprep ({"abc","cba"}, "b", "?"), {"a?c","c?a"}) |
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|
1554 %!assert (regexprep ({"abc","cba"}, {"b","a"}, {"?","!"}), {"!?c","c?!"}) |
6361 | 1555 |
24751
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Expand octal sequences in regexprep replacement string for Matlab compatibility.
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changeset
|
1556 ## Nasty lookbehind expression |
21575
bc9aa534bc29
maint: Clean up BIST tests so they don't produce warnings.
Rik <rik@octave.org>
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21547
diff
changeset
|
1557 %!test |
bc9aa534bc29
maint: Clean up BIST tests so they don't produce warnings.
Rik <rik@octave.org>
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21547
diff
changeset
|
1558 %! warning ("off", "Octave:regexp-lookbehind-limit", "local"); |
24751
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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changeset
|
1559 %! assert (regexprep ('x^(-1)+y(-1)+z(-1)=0', '(?<=[a-z]+)\(\-[1-9]*\)', |
6e670c58c6f0
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24741
diff
changeset
|
1560 %! '_minus1'),'x^(-1)+y_minus1+z_minus1=0'); |
14543
e47d929fde8f
process backslash string escapes in regexp pattern and regexprep replacement (bug #35911)
John W. Eaton <jwe@octave.org>
parents:
14536
diff
changeset
|
1561 |
24751
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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changeset
|
1562 ## Verify escape sequences in pattern |
21317
a4faec57f4c8
maint: remove semicolon after %!assert tests to follow Octave conventions.
Rik <rik@octave.org>
parents:
21301
diff
changeset
|
1563 %!assert (regexprep ("\n", '\n', "X"), "X") |
a4faec57f4c8
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Rik <rik@octave.org>
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21301
diff
changeset
|
1564 %!assert (regexprep ("\n", "\n", "X"), "X") |
24606
4a4a8b2a5bf2
Test for incorrect regexprep on ARM platforms (bug #52810).
Colin Macdonald <cbm@m.fsf.org>
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23816
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changeset
|
1565 |
24751
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changeset
|
1566 ## Verify NULLs in pattern and replacement string |
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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24741
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changeset
|
1567 %!assert (regexprep ("A\0A", "\0", ","), "A,A") |
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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changeset
|
1568 %!assert (regexprep ("A\0A", '\0', ","), "A,A") |
6e670c58c6f0
Expand octal sequences in regexprep replacement string for Matlab compatibility.
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changeset
|
1569 %!assert (regexprep ("A,A", "A", "B\0B"), "B\0B,B\0B") |
6e670c58c6f0
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changeset
|
1570 %!assert (regexprep ("A,A", "A", 'B\0B'), "B\0B,B\0B") |
6e670c58c6f0
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Rik <rik@octave.org>
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|
1571 |
24606
4a4a8b2a5bf2
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Colin Macdonald <cbm@m.fsf.org>
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23816
diff
changeset
|
1572 ## Empty matches were broken on ARM architecture |
4a4a8b2a5bf2
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Colin Macdonald <cbm@m.fsf.org>
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23816
diff
changeset
|
1573 %!test <*52810> |
4a4a8b2a5bf2
Test for incorrect regexprep on ARM platforms (bug #52810).
Colin Macdonald <cbm@m.fsf.org>
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23816
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changeset
|
1574 %! assert (strcmp (regexprep ("\nabc", "^(\t*)(abc)$", "$1$2", "lineanchors"), "\nabc")) |
5785 | 1575 */ |