Mercurial > hg > nginx
annotate src/core/ngx_string.h @ 5742:c45c9812cf11
Core: removed meaningless check from ngx_palloc_block().
The check became meaningless after refactoring in 2a92804f4109.
With the loop currently in place, "current" can't be NULL, hence
the check can be dropped.
Additionally, the local variable "current" was removed to
simplify code, and pool->current now used directly instead.
Found by Coverity (CID 714236).
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Thu, 26 Jun 2014 03:34:19 +0400 |
| parents | a602e1006579 |
| children | 33c08d7e2915 |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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6 |
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8 #ifndef _NGX_STRING_H_INCLUDED_ |
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9 #define _NGX_STRING_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 |
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15 |
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16 typedef struct { |
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17 size_t len; |
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18 u_char *data; |
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19 } ngx_str_t; |
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20 |
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21 |
| 649 | 22 typedef struct { |
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23 ngx_str_t key; |
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24 ngx_str_t value; |
| 649 | 25 } ngx_keyval_t; |
| 26 | |
| 27 | |
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28 typedef struct { |
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29 unsigned len:28; |
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30 |
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31 unsigned valid:1; |
| 1565 | 32 unsigned no_cacheable:1; |
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33 unsigned not_found:1; |
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34 unsigned escape:1; |
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35 |
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36 u_char *data; |
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37 } ngx_variable_value_t; |
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38 |
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39 |
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40 #define ngx_string(str) { sizeof(str) - 1, (u_char *) str } |
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41 #define ngx_null_string { 0, NULL } |
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42 #define ngx_str_set(str, text) \ |
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43 (str)->len = sizeof(text) - 1; (str)->data = (u_char *) text |
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44 #define ngx_str_null(str) (str)->len = 0; (str)->data = NULL |
| 477 | 45 |
| 46 | |
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47 #define ngx_tolower(c) (u_char) ((c >= 'A' && c <= 'Z') ? (c | 0x20) : c) |
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48 #define ngx_toupper(c) (u_char) ((c >= 'a' && c <= 'z') ? (c & ~0x20) : c) |
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49 |
| 2135 | 50 void ngx_strlow(u_char *dst, u_char *src, size_t n); |
| 51 | |
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52 |
| 461 | 53 #define ngx_strncmp(s1, s2, n) strncmp((const char *) s1, (const char *) s2, n) |
| 54 | |
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55 |
| 573 | 56 /* msvc and icc7 compile strcmp() to inline loop */ |
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57 #define ngx_strcmp(s1, s2) strcmp((const char *) s1, (const char *) s2) |
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58 |
| 461 | 59 |
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60 #define ngx_strstr(s1, s2) strstr((const char *) s1, (const char *) s2) |
| 2201 | 61 #define ngx_strlen(s) strlen((const char *) s) |
| 62 | |
| 1157 | 63 #define ngx_strchr(s1, c) strchr((const char *) s1, (int) c) |
| 2201 | 64 |
| 65 static ngx_inline u_char * | |
| 66 ngx_strlchr(u_char *p, u_char *last, u_char c) | |
| 67 { | |
| 68 while (p < last) { | |
| 69 | |
| 70 if (*p == c) { | |
| 71 return p; | |
| 72 } | |
| 73 | |
| 74 p++; | |
| 75 } | |
| 76 | |
| 77 return NULL; | |
| 78 } | |
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79 |
| 461 | 80 |
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81 /* |
| 573 | 82 * msvc and icc7 compile memset() to the inline "rep stos" |
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83 * while ZeroMemory() and bzero() are the calls. |
| 573 | 84 * icc7 may also inline several mov's of a zeroed register for small blocks. |
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85 */ |
| 515 | 86 #define ngx_memzero(buf, n) (void) memset(buf, 0, n) |
| 87 #define ngx_memset(buf, c, n) (void) memset(buf, c, n) | |
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88 |
| 461 | 89 |
| 583 | 90 #if (NGX_MEMCPY_LIMIT) |
| 91 | |
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92 void *ngx_memcpy(void *dst, const void *src, size_t n); |
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93 #define ngx_cpymem(dst, src, n) (((u_char *) ngx_memcpy(dst, src, n)) + (n)) |
| 583 | 94 |
| 95 #else | |
| 96 | |
| 573 | 97 /* |
| 98 * gcc3, msvc, and icc7 compile memcpy() to the inline "rep movs". | |
| 99 * gcc3 compiles memcpy(d, s, 4) to the inline "mov"es. | |
| 100 * icc8 compile memcpy(d, s, 4) to the inline "mov"es or XMM moves. | |
| 101 */ | |
| 515 | 102 #define ngx_memcpy(dst, src, n) (void) memcpy(dst, src, n) |
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103 #define ngx_cpymem(dst, src, n) (((u_char *) memcpy(dst, src, n)) + (n)) |
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104 |
| 583 | 105 #endif |
| 106 | |
| 461 | 107 |
| 573 | 108 #if ( __INTEL_COMPILER >= 800 ) |
| 109 | |
| 110 /* | |
| 111 * the simple inline cycle copies the variable length strings up to 16 | |
| 112 * bytes faster than icc8 autodetecting _intel_fast_memcpy() | |
| 113 */ | |
| 114 | |
| 115 static ngx_inline u_char * | |
| 116 ngx_copy(u_char *dst, u_char *src, size_t len) | |
| 117 { | |
| 118 if (len < 17) { | |
| 119 | |
| 120 while (len) { | |
| 121 *dst++ = *src++; | |
| 122 len--; | |
| 123 } | |
| 124 | |
| 125 return dst; | |
| 126 | |
| 127 } else { | |
| 128 return ngx_cpymem(dst, src, len); | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 #else | |
| 133 | |
| 134 #define ngx_copy ngx_cpymem | |
| 135 | |
| 136 #endif | |
| 137 | |
| 138 | |
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139 #define ngx_memmove(dst, src, n) (void) memmove(dst, src, n) |
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140 #define ngx_movemem(dst, src, n) (((u_char *) memmove(dst, src, n)) + (n)) |
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141 |
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142 |
| 573 | 143 /* msvc and icc7 compile memcmp() to the inline loop */ |
| 1648 | 144 #define ngx_memcmp(s1, s2, n) memcmp((const char *) s1, (const char *) s2, n) |
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145 |
| 461 | 146 |
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147 u_char *ngx_cpystrn(u_char *dst, u_char *src, size_t n); |
| 485 | 148 u_char *ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src); |
| 503 | 149 u_char * ngx_cdecl ngx_sprintf(u_char *buf, const char *fmt, ...); |
| 150 u_char * ngx_cdecl ngx_snprintf(u_char *buf, size_t max, const char *fmt, ...); | |
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151 u_char * ngx_cdecl ngx_slprintf(u_char *buf, u_char *last, const char *fmt, |
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152 ...); |
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153 u_char *ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args); |
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154 #define ngx_vsnprintf(buf, max, fmt, args) \ |
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155 ngx_vslprintf(buf, buf + (max), fmt, args) |
| 455 | 156 |
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157 ngx_int_t ngx_strcasecmp(u_char *s1, u_char *s2); |
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158 ngx_int_t ngx_strncasecmp(u_char *s1, u_char *s2, size_t n); |
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159 |
| 1552 | 160 u_char *ngx_strnstr(u_char *s1, char *s2, size_t n); |
| 161 | |
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162 u_char *ngx_strstrn(u_char *s1, char *s2, size_t n); |
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163 u_char *ngx_strcasestrn(u_char *s1, char *s2, size_t n); |
| 2668 | 164 u_char *ngx_strlcasestrn(u_char *s1, u_char *last, u_char *s2, size_t n); |
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165 |
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166 ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n); |
| 455 | 167 ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n); |
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168 ngx_int_t ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2); |
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169 ngx_int_t ngx_dns_strcmp(u_char *s1, u_char *s2); |
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170 ngx_int_t ngx_filename_cmp(u_char *s1, u_char *s2, size_t n); |
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171 |
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172 ngx_int_t ngx_atoi(u_char *line, size_t n); |
| 3512 | 173 ngx_int_t ngx_atofp(u_char *line, size_t n, size_t point); |
| 501 | 174 ssize_t ngx_atosz(u_char *line, size_t n); |
| 175 off_t ngx_atoof(u_char *line, size_t n); | |
| 176 time_t ngx_atotm(u_char *line, size_t n); | |
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177 ngx_int_t ngx_hextoi(u_char *line, size_t n); |
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178 |
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179 u_char *ngx_hex_dump(u_char *dst, u_char *src, size_t len); |
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174
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180 |
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181 |
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182 #define ngx_base64_encoded_length(len) (((len + 2) / 3) * 4) |
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183 #define ngx_base64_decoded_length(len) (((len + 3) / 4) * 3) |
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184 |
| 452 | 185 void ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src); |
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186 void ngx_encode_base64url(ngx_str_t *dst, ngx_str_t *src); |
| 452 | 187 ngx_int_t ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src); |
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188 ngx_int_t ngx_decode_base64url(ngx_str_t *dst, ngx_str_t *src); |
| 461 | 189 |
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190 uint32_t ngx_utf8_decode(u_char **p, size_t n); |
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191 size_t ngx_utf8_length(u_char *p, size_t n); |
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192 u_char *ngx_utf8_cpystrn(u_char *dst, u_char *src, size_t n, size_t len); |
| 527 | 193 |
| 461 | 194 |
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195 #define NGX_ESCAPE_URI 0 |
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196 #define NGX_ESCAPE_ARGS 1 |
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197 #define NGX_ESCAPE_URI_COMPONENT 2 |
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198 #define NGX_ESCAPE_HTML 3 |
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199 #define NGX_ESCAPE_REFRESH 4 |
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200 #define NGX_ESCAPE_MEMCACHED 5 |
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201 #define NGX_ESCAPE_MAIL_AUTH 6 |
| 601 | 202 |
| 1593 | 203 #define NGX_UNESCAPE_URI 1 |
| 204 #define NGX_UNESCAPE_REDIRECT 2 | |
| 461 | 205 |
| 485 | 206 uintptr_t ngx_escape_uri(u_char *dst, u_char *src, size_t size, |
| 493 | 207 ngx_uint_t type); |
| 601 | 208 void ngx_unescape_uri(u_char **dst, u_char **src, size_t size, ngx_uint_t type); |
| 1544 | 209 uintptr_t ngx_escape_html(u_char *dst, u_char *src, size_t size); |
| 210 | |
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211 |
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212 typedef struct { |
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213 ngx_rbtree_node_t node; |
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214 ngx_str_t str; |
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215 } ngx_str_node_t; |
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216 |
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217 |
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218 void ngx_str_rbtree_insert_value(ngx_rbtree_node_t *temp, |
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219 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
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220 ngx_str_node_t *ngx_str_rbtree_lookup(ngx_rbtree_t *rbtree, ngx_str_t *name, |
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221 uint32_t hash); |
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222 |
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223 |
| 1208 | 224 void ngx_sort(void *base, size_t n, size_t size, |
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225 ngx_int_t (*cmp)(const void *, const void *)); |
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226 #define ngx_qsort qsort |
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227 |
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228 |
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229 #define ngx_value_helper(n) #n |
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230 #define ngx_value(n) ngx_value_helper(n) |
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231 |
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232 |
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233 #endif /* _NGX_STRING_H_INCLUDED_ */ |