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annotate src/core/ngx_regex.c @ 4450:4919fb357a5d stable-1.0

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Merge of r4406, r4413: copyrights updated.
author Maxim Dounin <mdounin@mdounin.ru>
date Sun, 05 Feb 2012 20:02:59 +0000
parents 66ccd4ae6625
children
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2 /*
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3 * Copyright (C) Igor Sysoev
4450
4919fb357a5d Merge of r4406, r4413: copyrights updated.
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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11
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12 static void * ngx_libc_cdecl ngx_regex_malloc(size_t size);
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13 static void ngx_libc_cdecl ngx_regex_free(void *p);
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14
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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15
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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16 static ngx_pool_t *ngx_pcre_pool;
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8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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18
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19 void
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20 ngx_regex_init(void)
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21 {
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22 pcre_malloc = ngx_regex_malloc;
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23 pcre_free = ngx_regex_free;
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24 }
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26
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27 static ngx_inline void
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28 ngx_regex_malloc_init(ngx_pool_t *pool)
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29 {
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30 #if (NGX_THREADS)
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31 ngx_core_tls_t *tls;
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32
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33 if (ngx_threaded) {
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34 tls = ngx_thread_get_tls(ngx_core_tls_key);
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35 tls->pool = pool;
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36 return;
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37 }
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38
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39 #endif
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40
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41 ngx_pcre_pool = pool;
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42 }
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43
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44
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45 static ngx_inline void
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46 ngx_regex_malloc_done(void)
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47 {
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48 #if (NGX_THREADS)
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49 ngx_core_tls_t *tls;
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50
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51 if (ngx_threaded) {
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52 tls = ngx_thread_get_tls(ngx_core_tls_key);
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53 tls->pool = NULL;
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54 return;
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55 }
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56
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57 #endif
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58
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59 ngx_pcre_pool = NULL;
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60 }
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61
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62
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63 ngx_int_t
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64 ngx_regex_compile(ngx_regex_compile_t *rc)
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65 {
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66 int n, erroff;
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67 char *p;
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68 const char *errstr;
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69 ngx_regex_t *re;
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70
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71 ngx_regex_malloc_init(rc->pool);
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72
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73 re = pcre_compile((const char *) rc->pattern.data, (int) rc->options,
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74 &errstr, &erroff, NULL);
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75
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76 /* ensure that there is no current pool */
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77 ngx_regex_malloc_done();
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78
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79 if (re == NULL) {
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80 if ((size_t) erroff == rc->pattern.len) {
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81 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len,
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82 "pcre_compile() failed: %s in \"%V\"",
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83 errstr, &rc->pattern)
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84 - rc->err.data;
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85
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86 } else {
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87 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len,
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88 "pcre_compile() failed: %s in \"%V\" at \"%s\"",
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89 errstr, &rc->pattern, rc->pattern.data + erroff)
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90 - rc->err.data;
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91 }
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92
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93 return NGX_ERROR;
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94 }
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95
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96 rc->regex = re;
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97
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98 n = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &rc->captures);
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99 if (n < 0) {
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100 p = "pcre_fullinfo(\"%V\", PCRE_INFO_CAPTURECOUNT) failed: %d";
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101 goto failed;
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102 }
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103
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104 if (rc->captures == 0) {
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105 return NGX_OK;
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106 }
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107
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108 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMECOUNT, &rc->named_captures);
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109 if (n < 0) {
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110 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMECOUNT) failed: %d";
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111 goto failed;
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112 }
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113
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114 if (rc->named_captures == 0) {
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115 return NGX_OK;
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116 }
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117
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118 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMEENTRYSIZE, &rc->name_size);
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119 if (n < 0) {
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120 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMEENTRYSIZE) failed: %d";
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121 goto failed;
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122 }
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123
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124 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMETABLE, &rc->names);
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125 if (n < 0) {
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126 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMETABLE) failed: %d";
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127 goto failed;
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128 }
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129
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130 return NGX_OK;
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131
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132 failed:
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133
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134 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, p, &rc->pattern, n)
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135 - rc->err.data;
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136 return NGX_OK;
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137 }
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139
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140 ngx_int_t
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141 ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log)
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142 {
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143 ngx_int_t n;
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144 ngx_uint_t i;
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145 ngx_regex_elt_t *re;
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146
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147 re = a->elts;
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148
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149 for (i = 0; i < a->nelts; i++) {
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150
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151 n = ngx_regex_exec(re[i].regex, s, NULL, 0);
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152
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153 if (n == NGX_REGEX_NO_MATCHED) {
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154 continue;
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155 }
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156
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157 if (n < 0) {
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158 ngx_log_error(NGX_LOG_ALERT, log, 0,
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159 ngx_regex_exec_n " failed: %i on \"%V\" using \"%s\"",
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160 n, s, re[i].name);
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161 return NGX_ERROR;
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162 }
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163
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164 /* match */
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165
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166 return NGX_OK;
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167 }
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168
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169 return NGX_DECLINED;
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170 }
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171
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172
503
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173 static void * ngx_libc_cdecl
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174 ngx_regex_malloc(size_t size)
195
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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175 {
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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176 ngx_pool_t *pool;
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177 #if (NGX_THREADS)
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178 ngx_core_tls_t *tls;
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179
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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180 if (ngx_threaded) {
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181 tls = ngx_thread_get_tls(ngx_core_tls_key);
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182 pool = tls->pool;
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183
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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184 } else {
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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185 pool = ngx_pcre_pool;
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186 }
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187
381
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188 #else
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189
381
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190 pool = ngx_pcre_pool;
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191
381
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192 #endif
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193
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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194 if (pool) {
2049
2a92804f4109 *) back out r2040
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195 return ngx_palloc(pool, size);
294
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diff changeset
196 }
5cfd65b8b0a7 nginx-0.0.3-2004-03-23-09:01:52 import
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diff changeset
197
5cfd65b8b0a7 nginx-0.0.3-2004-03-23-09:01:52 import
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198 return NULL;
195
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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parents:
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199 }
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parents:
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200
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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diff changeset
201
503
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diff changeset
202 static void ngx_libc_cdecl
b1648294f693 nginx-0.1.26-RELEASE import
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diff changeset
203 ngx_regex_free(void *p)
195
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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204 {
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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parents:
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205 return;
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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206 }