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annotate liboctave/regex-match.cc @ 7955:645ced9fa838

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regex-match.cc (regex_match::init): initialize err to 0
author John W. Eaton <jwe@octave.org>
date Mon, 21 Jul 2008 13:10:48 -0400
parents d3a7882fa0b3
children 25bc2d31e1bf
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rev   line source
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1 /*
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2
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3 Copyright (C) 2008 David Bateman
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <vector>
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28 #include <iostream>
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29 #include <string>
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30
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31 #include "regex-match.h"
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32 #include "str-vec.h"
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33
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34 regex_match&
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35 regex_match::operator = (const regex_match& gm)
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36 {
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37 if (this != &gm)
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38 {
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39 #if HAVE_REGEX
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40 for (int i = 0; i < pat.length (); i++)
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41 regfree (compiled +i);
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42 delete [] compiled;
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43 #endif
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44 pat = gm.pat;
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45 case_insen = gm.case_insen;
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46 init ();
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47 }
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48 return *this;
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49 }
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50
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51 regex_match::~regex_match (void)
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52 {
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53 #if HAVE_REGEX
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54 for (int i = 0; i < pat.length (); i++)
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55 regfree (compiled +i);
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56 delete [] compiled;
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57 #endif
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58 }
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59
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60
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61 void
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62 regex_match::set_pattern (const std::string& p)
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63 {
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64 #if HAVE_REGEX
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65 for (int i = 0; i < pat.length (); i++)
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66 regfree (compiled +i);
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67 delete [] compiled;
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68 #endif
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69 pat = p;
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70 init ();
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71 }
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72
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73 void
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74 regex_match::set_pattern (const string_vector& p)
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75 {
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76 #if HAVE_REGEX
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77 for (int i = 0; i < pat.length (); i++)
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78 regfree (compiled +i);
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79 delete [] compiled;
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80 #endif
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81 pat = p;
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82 init ();
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83 }
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84
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85 void
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86 regex_match::init (void)
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87 {
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88 #ifdef HAVE_REGEX
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89 int npat = pat.length ();
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90 int err = 0;
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91 int i;
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92
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93 compiled = new regex_t [npat];
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94
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95 for (i = 0; i < npat; i++)
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96 {
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97 err = regcomp (compiled + i, pat(i).c_str (),
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98 (REG_NOSUB | REG_EXTENDED |
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99 (case_insen ? REG_ICASE : 0)));
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100 if (err)
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101 break;
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102 }
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103
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104 if (err)
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105 {
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106 int len = regerror (err, compiled + i, 0, 0);
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107 OCTAVE_LOCAL_BUFFER (char, errmsg, len);
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108 regerror(err, compiled + i, errmsg, len);
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109 (*current_liboctave_error_handler) ("%s in pattern (%s)", errmsg,
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110 pat(i).c_str());
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111
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112 for (int j = 0; j < i + 1; j++)
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113 regfree (compiled + j);
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114 }
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115 #else
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116 (*current_liboctave_error_handler)
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117 ("regex not available in this version of Octave");
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118 #endif
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119 }
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120
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121 bool
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122 regex_match::match (const std::string& s)
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123 {
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124 #if HAVE_REGEX
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125 int npat = pat.length ();
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126
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127 const char *str = s.c_str ();
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128
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129 for (int i = 0; i < npat; i++)
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130 if (regexec (compiled + i, str, 0, 0, 0) == 0)
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131 return true;
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132 #endif
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133
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134 return false;
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135 }
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136
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137 Array<bool>
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138 regex_match::match (const string_vector& s)
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139 {
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140 int n = s.length ();
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141
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142 Array<bool> retval (n);
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143
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144 for (int i = 0; i < n; i++)
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145 retval(i) = match (s[i]);
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146
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147 return retval;
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148 }
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149
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150
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151 /*
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152 ;;; Local Variables: ***
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153 ;;; mode: C++ ***
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154 ;;; End: ***
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155 */
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156