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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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6
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7 #ifndef _NGX_STRING_H_INCLUDED_
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8 #define _NGX_STRING_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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15 typedef struct {
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320
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16 size_t len;
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17 u_char *data;
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0
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18 } ngx_str_t;
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19
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20
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198
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21 typedef struct {
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320
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22 ngx_str_t key;
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23 ngx_str_t value;
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198
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24 } ngx_keyval_t;
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25
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26
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320
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27 typedef struct {
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376
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28 unsigned len:28;
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320
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29
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30 unsigned valid:1;
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340
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31 unsigned no_cacheable:1;
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320
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32 unsigned not_found:1;
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376
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33 unsigned escape:1;
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320
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34
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35 u_char *data;
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36 } ngx_variable_value_t;
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37
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38
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286
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39 #define ngx_string(str) { sizeof(str) - 1, (u_char *) str }
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40 #define ngx_null_string { 0, NULL }
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26
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41
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42
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286
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43 #define ngx_tolower(c) (u_char) ((c >= 'A' && c <= 'Z') ? (c | 0x20) : c)
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44 #define ngx_toupper(c) (u_char) ((c >= 'a' && c <= 'z') ? (c & ~0x20) : c)
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0
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45
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392
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46 void ngx_strlow(u_char *dst, u_char *src, size_t n);
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47
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0
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48
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10
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49 #define ngx_strncmp(s1, s2, n) strncmp((const char *) s1, (const char *) s2, n)
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50
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0
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51
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122
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52 /* msvc and icc7 compile strcmp() to inline loop */
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0
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53 #define ngx_strcmp(s1, s2) strcmp((const char *) s1, (const char *) s2)
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54
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10
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55
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0
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56 #define ngx_strstr(s1, s2) strstr((const char *) s1, (const char *) s2)
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400
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57 #define ngx_strlen(s) strlen((const char *) s)
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58
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294
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59 #define ngx_strchr(s1, c) strchr((const char *) s1, (int) c)
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400
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60
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61 static ngx_inline u_char *
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62 ngx_strlchr(u_char *p, u_char *last, u_char c)
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63 {
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64 while (p < last) {
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65
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66 if (*p == c) {
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67 return p;
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68 }
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69
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70 p++;
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71 }
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72
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73 return NULL;
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74 }
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0
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75
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10
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76
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0
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77 /*
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122
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78 * msvc and icc7 compile memset() to the inline "rep stos"
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0
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79 * while ZeroMemory() and bzero() are the calls.
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122
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80 * icc7 may also inline several mov's of a zeroed register for small blocks.
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81 */
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64
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82 #define ngx_memzero(buf, n) (void) memset(buf, 0, n)
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83 #define ngx_memset(buf, c, n) (void) memset(buf, c, n)
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0
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84
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10
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85
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132
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86 #if (NGX_MEMCPY_LIMIT)
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87
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88 void *ngx_memcpy(void *dst, void *src, size_t n);
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89 #define ngx_cpymem(dst, src, n) ((u_char *) ngx_memcpy(dst, src, n)) + (n)
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90
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91 #else
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92
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122
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93 /*
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94 * gcc3, msvc, and icc7 compile memcpy() to the inline "rep movs".
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95 * gcc3 compiles memcpy(d, s, 4) to the inline "mov"es.
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96 * icc8 compile memcpy(d, s, 4) to the inline "mov"es or XMM moves.
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97 */
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64
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98 #define ngx_memcpy(dst, src, n) (void) memcpy(dst, src, n)
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28
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99 #define ngx_cpymem(dst, src, n) ((u_char *) memcpy(dst, src, n)) + (n)
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0
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100
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132
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101 #endif
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102
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10
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103
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122
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104 #if ( __INTEL_COMPILER >= 800 )
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105
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106 /*
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107 * the simple inline cycle copies the variable length strings up to 16
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108 * bytes faster than icc8 autodetecting _intel_fast_memcpy()
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109 */
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110
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111 static ngx_inline u_char *
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112 ngx_copy(u_char *dst, u_char *src, size_t len)
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113 {
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114 if (len < 17) {
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115
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116 while (len) {
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117 *dst++ = *src++;
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118 len--;
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119 }
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120
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121 return dst;
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122
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123 } else {
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124 return ngx_cpymem(dst, src, len);
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125 }
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126 }
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127
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128 #else
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129
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130 #define ngx_copy ngx_cpymem
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131
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132 #endif
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133
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134
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135 /* msvc and icc7 compile memcmp() to the inline loop */
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348
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136 #define ngx_memcmp(s1, s2, n) memcmp((const char *) s1, (const char *) s2, n)
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0
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137
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10
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138
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0
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139 u_char *ngx_cpystrn(u_char *dst, u_char *src, size_t n);
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34
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140 u_char *ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src);
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52
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141 u_char * ngx_cdecl ngx_sprintf(u_char *buf, const char *fmt, ...);
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142 u_char * ngx_cdecl ngx_snprintf(u_char *buf, size_t max, const char *fmt, ...);
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484
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143 u_char * ngx_cdecl ngx_slprintf(u_char *buf, u_char *last, const char *fmt,
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144 ...);
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145 u_char *ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args);
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146 #define ngx_vsnprintf(buf, max, fmt, args) \
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147 ngx_vslprintf(buf, buf + (max), fmt, args)
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4
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148
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286
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149 ngx_int_t ngx_strcasecmp(u_char *s1, u_char *s2);
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150 ngx_int_t ngx_strncasecmp(u_char *s1, u_char *s2, size_t n);
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151
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340
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152 u_char *ngx_strnstr(u_char *s1, char *s2, size_t n);
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153
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154 u_char *ngx_strstrn(u_char *s1, char *s2, size_t n);
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155 u_char *ngx_strcasestrn(u_char *s1, char *s2, size_t n);
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472
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156 u_char *ngx_strlcasestrn(u_char *s1, u_char *last, u_char *s2, size_t n);
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340
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157
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0
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158 ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n);
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4
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159 ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n);
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274
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160 ngx_int_t ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2);
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526
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161 ngx_int_t ngx_dns_strcmp(u_char *s1, u_char *s2);
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0
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162
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163 ngx_int_t ngx_atoi(u_char *line, size_t n);
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50
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164 ssize_t ngx_atosz(u_char *line, size_t n);
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165 off_t ngx_atoof(u_char *line, size_t n);
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166 time_t ngx_atotm(u_char *line, size_t n);
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0
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167 ngx_int_t ngx_hextoi(u_char *line, size_t n);
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168
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356
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169 u_char *ngx_hex_dump(u_char *dst, u_char *src, size_t len);
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0
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170
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171
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172 #define ngx_base64_encoded_length(len) (((len + 2) / 3) * 4)
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173 #define ngx_base64_decoded_length(len) (((len + 3) / 4) * 3)
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174
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2
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175 void ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src);
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176 ngx_int_t ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src);
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10
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177
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390
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178 uint32_t ngx_utf8_decode(u_char **p, size_t n);
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179 size_t ngx_utf8_length(u_char *p, size_t n);
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180 u_char *ngx_utf8_cpystrn(u_char *dst, u_char *src, size_t n, size_t len);
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76
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181
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10
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182
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342
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183 #define NGX_ESCAPE_URI 0
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184 #define NGX_ESCAPE_ARGS 1
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185 #define NGX_ESCAPE_HTML 2
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186 #define NGX_ESCAPE_REFRESH 3
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187 #define NGX_ESCAPE_MEMCACHED 4
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188 #define NGX_ESCAPE_MAIL_AUTH 5
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150
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189
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342
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190 #define NGX_UNESCAPE_URI 1
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191 #define NGX_UNESCAPE_REDIRECT 2
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10
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192
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193 uintptr_t ngx_escape_uri(u_char *dst, u_char *src, size_t size,
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42
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194 ngx_uint_t type);
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150
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195 void ngx_unescape_uri(u_char **dst, u_char **src, size_t size, ngx_uint_t type);
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340
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196 uintptr_t ngx_escape_html(u_char *dst, u_char *src, size_t size);
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197
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0
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198
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199
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302
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200 void ngx_sort(void *base, size_t n, size_t size,
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372
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201 ngx_int_t (*cmp)(const void *, const void *));
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322
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202 #define ngx_qsort qsort
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0
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203
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204
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322
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205 #define ngx_value_helper(n) #n
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206 #define ngx_value(n) ngx_value_helper(n)
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0
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207
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208
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209 #endif /* _NGX_STRING_H_INCLUDED_ */
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