Annotation of embedaddon/nginx/src/core/ngx_string.h, revision 1.1
1.1 ! misho 1:
! 2: /*
! 3: * Copyright (C) Igor Sysoev
! 4: * Copyright (C) Nginx, Inc.
! 5: */
! 6:
! 7:
! 8: #ifndef _NGX_STRING_H_INCLUDED_
! 9: #define _NGX_STRING_H_INCLUDED_
! 10:
! 11:
! 12: #include <ngx_config.h>
! 13: #include <ngx_core.h>
! 14:
! 15:
! 16: typedef struct {
! 17: size_t len;
! 18: u_char *data;
! 19: } ngx_str_t;
! 20:
! 21:
! 22: typedef struct {
! 23: ngx_str_t key;
! 24: ngx_str_t value;
! 25: } ngx_keyval_t;
! 26:
! 27:
! 28: typedef struct {
! 29: unsigned len:28;
! 30:
! 31: unsigned valid:1;
! 32: unsigned no_cacheable:1;
! 33: unsigned not_found:1;
! 34: unsigned escape:1;
! 35:
! 36: u_char *data;
! 37: } ngx_variable_value_t;
! 38:
! 39:
! 40: #define ngx_string(str) { sizeof(str) - 1, (u_char *) str }
! 41: #define ngx_null_string { 0, NULL }
! 42: #define ngx_str_set(str, text) \
! 43: (str)->len = sizeof(text) - 1; (str)->data = (u_char *) text
! 44: #define ngx_str_null(str) (str)->len = 0; (str)->data = NULL
! 45:
! 46:
! 47: #define ngx_tolower(c) (u_char) ((c >= 'A' && c <= 'Z') ? (c | 0x20) : c)
! 48: #define ngx_toupper(c) (u_char) ((c >= 'a' && c <= 'z') ? (c & ~0x20) : c)
! 49:
! 50: void ngx_strlow(u_char *dst, u_char *src, size_t n);
! 51:
! 52:
! 53: #define ngx_strncmp(s1, s2, n) strncmp((const char *) s1, (const char *) s2, n)
! 54:
! 55:
! 56: /* msvc and icc7 compile strcmp() to inline loop */
! 57: #define ngx_strcmp(s1, s2) strcmp((const char *) s1, (const char *) s2)
! 58:
! 59:
! 60: #define ngx_strstr(s1, s2) strstr((const char *) s1, (const char *) s2)
! 61: #define ngx_strlen(s) strlen((const char *) s)
! 62:
! 63: #define ngx_strchr(s1, c) strchr((const char *) s1, (int) c)
! 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: }
! 79:
! 80:
! 81: /*
! 82: * msvc and icc7 compile memset() to the inline "rep stos"
! 83: * while ZeroMemory() and bzero() are the calls.
! 84: * icc7 may also inline several mov's of a zeroed register for small blocks.
! 85: */
! 86: #define ngx_memzero(buf, n) (void) memset(buf, 0, n)
! 87: #define ngx_memset(buf, c, n) (void) memset(buf, c, n)
! 88:
! 89:
! 90: #if (NGX_MEMCPY_LIMIT)
! 91:
! 92: void *ngx_memcpy(void *dst, const void *src, size_t n);
! 93: #define ngx_cpymem(dst, src, n) (((u_char *) ngx_memcpy(dst, src, n)) + (n))
! 94:
! 95: #else
! 96:
! 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: */
! 102: #define ngx_memcpy(dst, src, n) (void) memcpy(dst, src, n)
! 103: #define ngx_cpymem(dst, src, n) (((u_char *) memcpy(dst, src, n)) + (n))
! 104:
! 105: #endif
! 106:
! 107:
! 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:
! 139: #define ngx_memmove(dst, src, n) (void) memmove(dst, src, n)
! 140: #define ngx_movemem(dst, src, n) (((u_char *) memmove(dst, src, n)) + (n))
! 141:
! 142:
! 143: /* msvc and icc7 compile memcmp() to the inline loop */
! 144: #define ngx_memcmp(s1, s2, n) memcmp((const char *) s1, (const char *) s2, n)
! 145:
! 146:
! 147: u_char *ngx_cpystrn(u_char *dst, u_char *src, size_t n);
! 148: u_char *ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src);
! 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, ...);
! 151: u_char * ngx_cdecl ngx_slprintf(u_char *buf, u_char *last, const char *fmt,
! 152: ...);
! 153: u_char *ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args);
! 154: #define ngx_vsnprintf(buf, max, fmt, args) \
! 155: ngx_vslprintf(buf, buf + (max), fmt, args)
! 156:
! 157: ngx_int_t ngx_strcasecmp(u_char *s1, u_char *s2);
! 158: ngx_int_t ngx_strncasecmp(u_char *s1, u_char *s2, size_t n);
! 159:
! 160: u_char *ngx_strnstr(u_char *s1, char *s2, size_t n);
! 161:
! 162: u_char *ngx_strstrn(u_char *s1, char *s2, size_t n);
! 163: u_char *ngx_strcasestrn(u_char *s1, char *s2, size_t n);
! 164: u_char *ngx_strlcasestrn(u_char *s1, u_char *last, u_char *s2, size_t n);
! 165:
! 166: ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n);
! 167: ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n);
! 168: ngx_int_t ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2);
! 169: ngx_int_t ngx_dns_strcmp(u_char *s1, u_char *s2);
! 170:
! 171: ngx_int_t ngx_atoi(u_char *line, size_t n);
! 172: ngx_int_t ngx_atofp(u_char *line, size_t n, size_t point);
! 173: ssize_t ngx_atosz(u_char *line, size_t n);
! 174: off_t ngx_atoof(u_char *line, size_t n);
! 175: time_t ngx_atotm(u_char *line, size_t n);
! 176: ngx_int_t ngx_hextoi(u_char *line, size_t n);
! 177:
! 178: u_char *ngx_hex_dump(u_char *dst, u_char *src, size_t len);
! 179:
! 180:
! 181: #define ngx_base64_encoded_length(len) (((len + 2) / 3) * 4)
! 182: #define ngx_base64_decoded_length(len) (((len + 3) / 4) * 3)
! 183:
! 184: void ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src);
! 185: ngx_int_t ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src);
! 186: ngx_int_t ngx_decode_base64url(ngx_str_t *dst, ngx_str_t *src);
! 187:
! 188: uint32_t ngx_utf8_decode(u_char **p, size_t n);
! 189: size_t ngx_utf8_length(u_char *p, size_t n);
! 190: u_char *ngx_utf8_cpystrn(u_char *dst, u_char *src, size_t n, size_t len);
! 191:
! 192:
! 193: #define NGX_ESCAPE_URI 0
! 194: #define NGX_ESCAPE_ARGS 1
! 195: #define NGX_ESCAPE_URI_COMPONENT 2
! 196: #define NGX_ESCAPE_HTML 3
! 197: #define NGX_ESCAPE_REFRESH 4
! 198: #define NGX_ESCAPE_MEMCACHED 5
! 199: #define NGX_ESCAPE_MAIL_AUTH 6
! 200:
! 201: #define NGX_UNESCAPE_URI 1
! 202: #define NGX_UNESCAPE_REDIRECT 2
! 203:
! 204: uintptr_t ngx_escape_uri(u_char *dst, u_char *src, size_t size,
! 205: ngx_uint_t type);
! 206: void ngx_unescape_uri(u_char **dst, u_char **src, size_t size, ngx_uint_t type);
! 207: uintptr_t ngx_escape_html(u_char *dst, u_char *src, size_t size);
! 208:
! 209:
! 210: typedef struct {
! 211: ngx_rbtree_node_t node;
! 212: ngx_str_t str;
! 213: } ngx_str_node_t;
! 214:
! 215:
! 216: void ngx_str_rbtree_insert_value(ngx_rbtree_node_t *temp,
! 217: ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
! 218: ngx_str_node_t *ngx_str_rbtree_lookup(ngx_rbtree_t *rbtree, ngx_str_t *name,
! 219: uint32_t hash);
! 220:
! 221:
! 222: void ngx_sort(void *base, size_t n, size_t size,
! 223: ngx_int_t (*cmp)(const void *, const void *));
! 224: #define ngx_qsort qsort
! 225:
! 226:
! 227: #define ngx_value_helper(n) #n
! 228: #define ngx_value(n) ngx_value_helper(n)
! 229:
! 230:
! 231: #endif /* _NGX_STRING_H_INCLUDED_ */
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