1 2 /* 3 * Copyright (C) Igor Sysoev 4 * Copyright (C) NGINX, Inc. 5 */ 6 7 #ifndef _NXT_STRING_H_INCLUDED_ 8 #define _NXT_STRING_H_INCLUDED_ 9 10 11 #define nxt_lowcase(c) \ 12 (u_char) ((c >= 'A' && c <= 'Z') ? c | 0x20 : c) 13 14 #define nxt_upcase(c) \ 15 (u_char) ((c >= 'a' && c <= 'z') ? c & ~0x20 : c) 16 17 #define nxt_isdigit(c) \ 18 ((u_char) ((c) - '0') <= 9) 19 20 #define nxt_strtod(s, endptr) \ 21 strtod((char *) s, (char **) endptr) 22 23 24 #define nxt_strlen(s) \ 25 strlen((char *) s) 26 27 28 #define nxt_strdup(s) \ 29 strdup((char *) s) 30 31 32 #define nxt_strchr(buf, delim) \ 33 (u_char *) strchr((char *) buf, delim) 34 35 36 #define nxt_memzero(buf, length) \ 37 (void) memset(buf, 0, length) 38 39 40 #define nxt_memset(buf, c, length) \ 41 (void) memset(buf, c, length) 42 43 44 #define nxt_memcpy(dst, src, length) \ 45 (void) memcpy(dst, src, length) 46 47 48 NXT_EXPORT void nxt_memcpy_lowcase(u_char *dst, const u_char *src, 49 size_t length); 50 NXT_EXPORT void nxt_memcpy_upcase(u_char *dst, const u_char *src, 51 size_t length); 52 53 54 /* 55 * nxt_cpymem() is an inline function but not a macro to 56 * eliminate possible double evaluation of length "length". 57 */ 58 nxt_inline void * 59 nxt_cpymem(void *dst, const void *src, size_t length) 60 { 61 return ((u_char *) memcpy(dst, src, length)) + length; 62 } 63 64 65 #define nxt_memmove(dst, src, length) \ 66 (void) memmove(dst, src, length) 67 68 69 #define nxt_memcmp(s1, s2, length) \ 70 memcmp((char *) s1, (char *) s2, length) 71 72 73 #define nxt_memchr(s, c, length) \ 74 memchr((char *) s, c, length) 75 76 77 #define nxt_strcmp(s1, s2) \ 78 strcmp((char *) s1, (char *) s2) 79 80 81 #define nxt_strncmp(s1, s2, length) \ 82 strncmp((char *) s1, (char *) s2, length) 83 84 85 NXT_EXPORT u_char *nxt_cpystr(u_char *dst, const u_char *src); 86 NXT_EXPORT u_char *nxt_cpystrn(u_char *dst, const u_char *src, size_t length); 87 NXT_EXPORT nxt_int_t nxt_strcasecmp(const u_char *s1, const u_char *s2); 88 NXT_EXPORT nxt_int_t nxt_strncasecmp(const u_char *s1, const u_char *s2, 89 size_t length); 90 NXT_EXPORT nxt_int_t nxt_memcasecmp(const void *p1, const void *p2, 91 size_t length); 92 93 NXT_EXPORT u_char *nxt_memstrn(const u_char *s, const u_char *end, 94 const char *ss, size_t length); 95 NXT_EXPORT u_char *nxt_memcasestrn(const u_char *s, const u_char *end, 96 const char *ss, size_t length); 97 NXT_EXPORT u_char *nxt_rmemstrn(const u_char *s, const u_char *end, 98 const char *ss, size_t length); 99 NXT_EXPORT size_t nxt_str_strip(const u_char *start, u_char *end); 100 101 102 typedef struct { 103 size_t length; 104 u_char *start; 105 } nxt_str_t; 106 107 108 #define nxt_string(str) { nxt_length(str), (u_char *) str } 109 #define nxt_string_zero(str) { sizeof(str), (u_char *) str } 110 #define nxt_null_string { 0, NULL } 111 112 113 #define nxt_str_set(str, text) \ 114 do { \ 115 (str)->length = nxt_length(text); \ 116 (str)->start = (u_char *) text; \ 117 } while (0) 118 119 120 #define nxt_str_null(str) \ 121 do { \ 122 (str)->length = 0; \ 123 (str)->start = NULL; \ 124 } while (0) 125 126 127 NXT_EXPORT nxt_str_t *nxt_str_alloc(nxt_mp_t *mp, size_t length); 128 NXT_EXPORT nxt_str_t *nxt_str_dup(nxt_mp_t *mp, nxt_str_t *dst, 129 const nxt_str_t *src); 130 NXT_EXPORT char *nxt_str_cstrz(nxt_mp_t *mp, const nxt_str_t *src); 131 132 133 #define nxt_strstr_eq(s1, s2) \ 134 (((s1)->length == (s2)->length) \ 135 && (nxt_memcmp((s1)->start, (s2)->start, (s1)->length) == 0)) 136 137 138 #define nxt_strcasestr_eq(s1, s2) \ 139 (((s1)->length == (s2)->length) \ 140 && (nxt_memcasecmp((s1)->start, (s2)->start, (s1)->length) == 0)) 141 142 143 #define nxt_str_eq(s, p, _length) \ 144 (((s)->length == _length) && (nxt_memcmp((s)->start, p, _length) == 0)) 145 146 147 #define nxt_str_start(s, p, _length) \ 148 (((s)->length >= _length) && (nxt_memcmp((s)->start, p, _length) == 0)) 149 150 151 #define nxt_strchr_eq(s, c) \ 152 (((s)->length == 1) && ((s)->start[0] == c)) 153 154 155 #define nxt_strchr_start(s, c) \ 156 (((s)->length != 0) && ((s)->start[0] == c)) 157 158 159 NXT_EXPORT nxt_int_t nxt_strverscmp(const u_char *s1, const u_char *s2); 160 NXT_EXPORT nxt_bool_t nxt_strvers_match(u_char *version, u_char *prefix, 161 size_t length); 162 163 NXT_EXPORT u_char *nxt_decode_uri(u_char *dst, u_char *src, size_t length); 164 NXT_EXPORT u_char *nxt_decode_uri_plus(u_char *dst, u_char *src, size_t length); 165 NXT_EXPORT uintptr_t nxt_encode_uri(u_char *dst, u_char *src, size_t length); 166 NXT_EXPORT uintptr_t nxt_encode_complex_uri(u_char *dst, u_char *src, 167 size_t length); 168 NXT_EXPORT nxt_bool_t nxt_is_complex_uri_encoded(u_char *s, size_t length); 169 170 NXT_EXPORT ssize_t nxt_base64_decode(u_char *dst, u_char *src, size_t length); 171 172 extern const uint8_t nxt_hex2int[256]; 173 174 175 #endif /* _NXT_STRING_H_INCLUDED_ */ 176