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annotate src/core/ngx_regex.c @ 3325:42c16d8bddbe

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regex named captures
author Igor Sysoev <igor@sysoev.ru>
date Mon, 16 Nov 2009 12:19:02 +0000
parents be47fe127f8c
children 169d84ff4064
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
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11 static void * ngx_libc_cdecl ngx_regex_malloc(size_t size);
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12 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 static ngx_pool_t *ngx_pcre_pool;
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17
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18 void
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19 ngx_regex_init(void)
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20 {
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21 pcre_malloc = ngx_regex_malloc;
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22 pcre_free = ngx_regex_free;
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23 }
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25
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26 static ngx_inline void
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27 ngx_regex_malloc_init(ngx_pool_t *pool)
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28 {
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29 #if (NGX_THREADS)
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30 ngx_core_tls_t *tls;
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31
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32 if (ngx_threaded) {
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33 tls = ngx_thread_get_tls(ngx_core_tls_key);
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34 tls->pool = pool;
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35 return;
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36 }
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37
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38 #else
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39
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40 ngx_pcre_pool = pool;
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41
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42 #endif
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43 }
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44
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45
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46 static ngx_inline void
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47 ngx_regex_malloc_done(void)
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48 {
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49 #if (NGX_THREADS)
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50 ngx_core_tls_t *tls;
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51
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52 if (ngx_threaded) {
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53 tls = ngx_thread_get_tls(ngx_core_tls_key);
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54 tls->pool = NULL;
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55 return;
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56 }
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57
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58 #else
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59
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60 ngx_pcre_pool = NULL;
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61
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62 #endif
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63 }
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64
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65
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66 ngx_int_t
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67 ngx_regex_compile(ngx_regex_compile_t *rc)
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68 {
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69 int n, erroff;
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70 char *p;
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71 const char *errstr;
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72 ngx_regex_t *re;
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73
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74 ngx_regex_malloc_init(rc->pool);
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75
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76 re = pcre_compile((const char *) rc->pattern.data, (int) rc->options,
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77 &errstr, &erroff, NULL);
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78
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79 /* ensure that there is no current pool */
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80 ngx_regex_malloc_done();
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81
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82 if (re == NULL) {
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83 if ((size_t) erroff == rc->pattern.len) {
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84 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len,
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85 "pcre_compile() failed: %s in \"%V\"",
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86 errstr, &rc->pattern)
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87 - rc->err.data;
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88
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89 } else {
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90 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len,
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91 "pcre_compile() failed: %s in \"%V\" at \"%s\"",
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92 errstr, &rc->pattern, rc->pattern.data + erroff)
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93 - rc->err.data;
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94 }
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95
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96 return NGX_ERROR;
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97 }
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98
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99 rc->regex = re;
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100
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101 n = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &rc->captures);
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102 if (n < 0) {
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103 p = "pcre_fullinfo(\"%V\", PCRE_INFO_CAPTURECOUNT) failed: %d";
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104 goto failed;
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105 }
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106
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107 if (rc->captures == 0) {
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108 return NGX_OK;
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109 }
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110
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111 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMECOUNT, &rc->named_captures);
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112 if (n < 0) {
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113 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMECOUNT) failed: %d";
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114 goto failed;
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115 }
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116
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117 if (rc->named_captures == 0) {
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118 return NGX_OK;
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119 }
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120
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121 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMEENTRYSIZE, &rc->name_size);
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122 if (n < 0) {
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123 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMEENTRYSIZE) failed: %d";
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124 goto failed;
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125 }
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126
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127 n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMETABLE, &rc->names);
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128 if (n < 0) {
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129 p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMETABLE) failed: %d";
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130 goto failed;
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131 }
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132
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133 return NGX_OK;
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134
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135 failed:
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136
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137 rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, p, &rc->pattern, n)
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138 - rc->err.data;
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139 return NGX_OK;
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140 }
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diff changeset
141
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
142
503
b1648294f693 nginx-0.1.26-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
143 ngx_int_t
b1648294f693 nginx-0.1.26-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
144 ngx_regex_capture_count(ngx_regex_t *re)
481
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
145 {
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
146 int rc, n;
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
147
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
148 n = 0;
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
149
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
150 rc = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &n);
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
151
501
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
152 if (rc < 0) {
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
153 return (ngx_int_t) rc;
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
154 }
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
155
d4ea69372b94 nginx-0.1.25-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 499
diff changeset
156 return (ngx_int_t) n;
481
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
157 }
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
158
fd661d14a7fa nginx-0.1.15-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
159
503
b1648294f693 nginx-0.1.26-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
160 ngx_int_t
1784
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
161 ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log)
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
162 {
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
163 ngx_int_t n;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
164 ngx_uint_t i;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
165 ngx_regex_elt_t *re;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
166
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
167 re = a->elts;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
168
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
169 for (i = 0; i < a->nelts; i++) {
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
170
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
171 n = ngx_regex_exec(re[i].regex, s, NULL, 0);
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
172
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
173 if (n == NGX_REGEX_NO_MATCHED) {
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
174 continue;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
175 }
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
176
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
177 if (n < 0) {
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
178 ngx_log_error(NGX_LOG_ALERT, log, 0,
3325
42c16d8bddbe regex named captures
Igor Sysoev <igor@sysoev.ru>
parents: 3319
diff changeset
179 ngx_regex_exec_n " failed: %i on \"%V\" using \"%s\"",
1784
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
180 n, s, re[i].name);
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
181 return NGX_ERROR;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
182 }
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
183
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
184 /* match */
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
185
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
186 return NGX_OK;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
187 }
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
188
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
189 return NGX_DECLINED;
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
190 }
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
191
7d313324d874 ngx_regex_exec_array()
Igor Sysoev <igor@sysoev.ru>
parents: 503
diff changeset
192
503
b1648294f693 nginx-0.1.26-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
193 static void * ngx_libc_cdecl
b1648294f693 nginx-0.1.26-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
194 ngx_regex_malloc(size_t size)
195
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
195 {
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
196 ngx_pool_t *pool;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
197 #if (NGX_THREADS)
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
198 ngx_core_tls_t *tls;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
199
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
200 if (ngx_threaded) {
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
201 tls = ngx_thread_get_tls(ngx_core_tls_key);
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
202 pool = tls->pool;
3325
42c16d8bddbe regex named captures
Igor Sysoev <igor@sysoev.ru>
parents: 3319
diff changeset
203
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
204 } else {
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
205 pool = ngx_pcre_pool;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
206 }
3325
42c16d8bddbe regex named captures
Igor Sysoev <igor@sysoev.ru>
parents: 3319
diff changeset
207
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
208 #else
3325
42c16d8bddbe regex named captures
Igor Sysoev <igor@sysoev.ru>
parents: 3319
diff changeset
209
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
210 pool = ngx_pcre_pool;
3325
42c16d8bddbe regex named captures
Igor Sysoev <igor@sysoev.ru>
parents: 3319
diff changeset
211
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
212 #endif
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
213
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
214 if (pool) {
2049
2a92804f4109 *) back out r2040
Igor Sysoev <igor@sysoev.ru>
parents: 2039
diff changeset
215 return ngx_palloc(pool, size);
294
5cfd65b8b0a7 nginx-0.0.3-2004-03-23-09:01:52 import
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
216 }
5cfd65b8b0a7 nginx-0.0.3-2004-03-23-09:01:52 import
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
217
5cfd65b8b0a7 nginx-0.0.3-2004-03-23-09:01:52 import
Igor Sysoev <igor@sysoev.ru>
parents: 290
diff changeset
218 return NULL;
195
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
219 }
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
220
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
221
503
b1648294f693 nginx-0.1.26-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
222 static void ngx_libc_cdecl
b1648294f693 nginx-0.1.26-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
223 ngx_regex_free(void *p)
195
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
224 {
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
225 return;
8dee38ea9117 nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
226 }