1 | /**********************************************************************
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2 | reggnu.c - Onigmo (Oniguruma-mod) (regular expression library)
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3 | **********************************************************************/
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4 | /*-
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5 | * Copyright (c) 2002-2008 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
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6 | * Copyright (c) 2011 K.Takata <kentkt AT csc DOT jp>
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7 | * All rights reserved.
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8 | *
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9 | * Redistribution and use in source and binary forms, with or without
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10 | * modification, are permitted provided that the following conditions
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11 | * are met:
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12 | * 1. Redistributions of source code must retain the above copyright
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13 | * notice, this list of conditions and the following disclaimer.
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14 | * 2. Redistributions in binary form must reproduce the above copyright
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15 | * notice, this list of conditions and the following disclaimer in the
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16 | * documentation and/or other materials provided with the distribution.
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17 | *
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18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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28 | * SUCH DAMAGE.
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29 | */
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30 |
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31 | #include "regint.h"
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32 |
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33 | #ifndef ONIGGNU_H
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34 | #include "oniggnu.h"
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35 | #endif
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36 |
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37 | extern void
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38 | re_free_registers(OnigRegion* r)
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39 | {
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40 | /* 0: don't free self */
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41 | onig_region_free(r, 0);
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42 | }
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43 |
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44 | extern int
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45 | re_adjust_startpos(regex_t* reg, const char* string, int size,
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46 | int startpos, int range)
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47 | {
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48 | if (startpos > 0 && ONIGENC_MBC_MAXLEN(reg->enc) != 1 && startpos < size) {
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49 | UChar *p;
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50 | UChar *s = (UChar* )string + startpos;
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51 |
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52 | if (range > 0) {
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53 | p = onigenc_get_right_adjust_char_head(reg->enc, (UChar* )string, s);
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54 | }
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55 | else {
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56 | p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, (UChar* )string, s);
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57 | }
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58 | return (int )(p - (UChar* )string);
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59 | }
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60 |
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61 | return startpos;
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62 | }
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63 |
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64 | extern int
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65 | re_match(regex_t* reg, const char* str, int size, int pos,
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66 | struct re_registers* regs)
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67 | {
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68 | return (int )onig_match(reg, (UChar* )str, (UChar* )(str + size),
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69 | (UChar* )(str + pos), regs, ONIG_OPTION_NONE);
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70 | }
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71 |
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72 | extern int
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73 | re_search(regex_t* bufp, const char* string, int size, int startpos, int range,
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74 | struct re_registers* regs)
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75 | {
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76 | return (int )onig_search(bufp, (UChar* )string, (UChar* )(string + size),
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77 | (UChar* )(string + startpos),
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78 | (UChar* )(string + startpos + range),
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79 | regs, ONIG_OPTION_NONE);
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80 | }
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81 |
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82 | extern int
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83 | re_compile_pattern(const char* pattern, int size, regex_t* reg, char* ebuf)
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84 | {
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85 | int r;
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86 | OnigErrorInfo einfo;
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87 |
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88 | r = onig_compile(reg, (UChar* )pattern, (UChar* )(pattern + size), &einfo);
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89 | if (r != ONIG_NORMAL) {
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90 | if (IS_NOT_NULL(ebuf))
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91 | (void )onig_error_code_to_str((UChar* )ebuf, r, &einfo);
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92 | }
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93 |
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94 | return r;
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95 | }
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96 |
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97 | #ifdef USE_RECOMPILE_API
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98 | extern int
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99 | re_recompile_pattern(const char* pattern, int size, regex_t* reg, char* ebuf)
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100 | {
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101 | int r;
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102 | OnigErrorInfo einfo;
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103 | OnigEncoding enc;
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104 |
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105 | /* I think encoding and options should be arguments of this function.
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106 | But this is adapted to present re.c. (2002/11/29)
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107 | */
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108 | enc = OnigEncDefaultCharEncoding;
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109 |
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110 | r = onig_recompile(reg, (UChar* )pattern, (UChar* )(pattern + size),
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111 | reg->options, enc, OnigDefaultSyntax, &einfo);
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112 | if (r != ONIG_NORMAL) {
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113 | if (IS_NOT_NULL(ebuf))
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114 | (void )onig_error_code_to_str((UChar* )ebuf, r, &einfo);
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115 | }
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116 | return r;
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117 | }
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118 | #endif
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119 |
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120 | extern void
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121 | re_free_pattern(regex_t* reg)
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122 | {
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123 | onig_free(reg);
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124 | }
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125 |
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126 | extern int
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127 | re_alloc_pattern(regex_t** reg)
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128 | {
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129 | *reg = (regex_t* )xmalloc(sizeof(regex_t));
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130 | if (IS_NULL(*reg)) return ONIGERR_MEMORY;
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131 |
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132 | return onig_reg_init(*reg, ONIG_OPTION_DEFAULT,
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133 | ONIGENC_CASE_FOLD_DEFAULT,
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134 | OnigEncDefaultCharEncoding,
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135 | OnigDefaultSyntax);
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136 | }
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137 |
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138 | extern void
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139 | re_set_casetable(const char* table)
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140 | {
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141 | onigenc_set_default_caseconv_table((UChar* )table);
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142 | }
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143 |
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144 | extern void
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145 | re_mbcinit(int mb_code)
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146 | {
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147 | OnigEncoding enc;
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148 |
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149 | switch (mb_code) {
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150 | case RE_MBCTYPE_ASCII:
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151 | enc = ONIG_ENCODING_ASCII;
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152 | break;
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153 | #if 0
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154 | case RE_MBCTYPE_EUC:
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155 | enc = ONIG_ENCODING_EUC_JP;
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156 | break;
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157 | case RE_MBCTYPE_SJIS:
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158 | enc = ONIG_ENCODING_SJIS;
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159 | break;
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160 | #endif
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161 | case RE_MBCTYPE_UTF8:
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162 | enc = ONIG_ENCODING_UTF8;
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163 | break;
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164 | default:
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165 | return ;
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166 | break;
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167 | }
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168 |
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169 | onigenc_set_default_encoding(enc);
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170 | }
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