src/ucx/string.c

Fri, 20 Sep 2024 20:04:35 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Fri, 20 Sep 2024 20:04:35 +0200
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parent 490
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permissions
-rw-r--r--

fix trace log use after free

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "cx/string.h"
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30 #include "cx/utils.h"
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31
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32 #include <string.h>
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33 #include <stdarg.h>
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34 #include <ctype.h>
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35
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36 #ifndef _WIN32
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37
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38 #include <strings.h> // for strncasecmp()
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39
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40 #endif // _WIN32
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41
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42 cxmutstr cx_mutstr(char *cstring) {
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43 return (cxmutstr) {cstring, strlen(cstring)};
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44 }
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45
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46 cxmutstr cx_mutstrn(
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47 char *cstring,
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48 size_t length
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49 ) {
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50 return (cxmutstr) {cstring, length};
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51 }
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52
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53 cxstring cx_str(const char *cstring) {
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54 return (cxstring) {cstring, strlen(cstring)};
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55 }
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56
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57 cxstring cx_strn(
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58 const char *cstring,
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59 size_t length
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60 ) {
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61 return (cxstring) {cstring, length};
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62 }
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63
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64 cxstring cx_strcast(cxmutstr str) {
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65 return (cxstring) {str.ptr, str.length};
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66 }
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67
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68 void cx_strfree(cxmutstr *str) {
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69 free(str->ptr);
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70 str->ptr = NULL;
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71 str->length = 0;
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72 }
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73
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74 void cx_strfree_a(
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75 CxAllocator const *alloc,
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76 cxmutstr *str
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77 ) {
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78 cxFree(alloc, str->ptr);
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79 str->ptr = NULL;
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80 str->length = 0;
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81 }
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82
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83 size_t cx_strlen(
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84 size_t count,
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85 ...
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86 ) {
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87 if (count == 0) return 0;
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88
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89 va_list ap;
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90 va_start(ap, count);
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91 size_t size = 0;
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92 cx_for_n(i, count) {
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93 cxstring str = va_arg(ap, cxstring);
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94 size += str.length;
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95 }
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96 va_end(ap);
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97
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98 return size;
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99 }
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100
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101 cxmutstr cx_strcat_ma(
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102 CxAllocator const *alloc,
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103 cxmutstr str,
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104 size_t count,
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105 ...
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106 ) {
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107 if (count == 0) return str;
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108
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109 cxstring *strings = calloc(count, sizeof(cxstring));
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110 if (!strings) abort();
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111
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112 va_list ap;
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113 va_start(ap, count);
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114
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115 // get all args and overall length
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116 size_t slen = str.length;
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117 cx_for_n(i, count) {
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118 cxstring s = va_arg (ap, cxstring);
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119 strings[i] = s;
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120 slen += s.length;
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121 }
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122 va_end(ap);
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123
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124 // reallocate or create new string
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125 if (str.ptr == NULL) {
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126 str.ptr = cxMalloc(alloc, slen + 1);
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127 } else {
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128 str.ptr = cxRealloc(alloc, str.ptr, slen + 1);
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129 }
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130 if (str.ptr == NULL) abort();
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131
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132 // concatenate strings
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133 size_t pos = str.length;
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134 str.length = slen;
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135 cx_for_n(i, count) {
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136 cxstring s = strings[i];
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137 memcpy(str.ptr + pos, s.ptr, s.length);
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138 pos += s.length;
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139 }
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140
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141 // terminate string
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142 str.ptr[str.length] = '\0';
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143
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144 // free temporary array
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145 free(strings);
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146
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147 return str;
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148 }
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149
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150 cxstring cx_strsubs(
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151 cxstring string,
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152 size_t start
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153 ) {
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154 return cx_strsubsl(string, start, string.length - start);
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155 }
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156
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157 cxmutstr cx_strsubs_m(
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158 cxmutstr string,
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159 size_t start
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160 ) {
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161 return cx_strsubsl_m(string, start, string.length - start);
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162 }
91
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163
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164 cxstring cx_strsubsl(
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165 cxstring string,
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166 size_t start,
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167 size_t length
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168 ) {
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169 if (start > string.length) {
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170 return (cxstring) {NULL, 0};
254
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171 }
415
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172
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173 size_t rem_len = string.length - start;
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174 if (length > rem_len) {
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175 length = rem_len;
254
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176 }
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177
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178 return (cxstring) {string.ptr + start, length};
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179 }
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180
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181 cxmutstr cx_strsubsl_m(
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182 cxmutstr string,
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183 size_t start,
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184 size_t length
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185 ) {
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186 cxstring result = cx_strsubsl(cx_strcast(string), start, length);
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187 return (cxmutstr) {(char *) result.ptr, result.length};
254
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188 }
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189
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190 cxstring cx_strchr(
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191 cxstring string,
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192 int chr
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193 ) {
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194 chr = 0xFF & chr;
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195 // TODO: improve by comparing multiple bytes at once
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196 cx_for_n(i, string.length) {
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197 if (string.ptr[i] == chr) {
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198 return cx_strsubs(string, i);
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199 }
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200 }
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201 return (cxstring) {NULL, 0};
254
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202 }
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203
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204 cxmutstr cx_strchr_m(
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205 cxmutstr string,
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206 int chr
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207 ) {
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208 cxstring result = cx_strchr(cx_strcast(string), chr);
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209 return (cxmutstr) {(char *) result.ptr, result.length};
254
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210 }
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211
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212 cxstring cx_strrchr(
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213 cxstring string,
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214 int chr
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215 ) {
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216 chr = 0xFF & chr;
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217 size_t i = string.length;
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218 while (i > 0) {
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219 i--;
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220 // TODO: improve by comparing multiple bytes at once
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221 if (string.ptr[i] == chr) {
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222 return cx_strsubs(string, i);
254
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223 }
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224 }
415
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225 return (cxstring) {NULL, 0};
91
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226 }
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227
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228 cxmutstr cx_strrchr_m(
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229 cxmutstr string,
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230 int chr
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231 ) {
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232 cxstring result = cx_strrchr(cx_strcast(string), chr);
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233 return (cxmutstr) {(char *) result.ptr, result.length};
91
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234 }
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235
490
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236 #ifndef CX_STRSTR_SBO_SIZE
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237 #define CX_STRSTR_SBO_SIZE 512
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238 #endif
254
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239
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240 cxstring cx_strstr(
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241 cxstring haystack,
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242 cxstring needle
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243 ) {
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244 if (needle.length == 0) {
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245 return haystack;
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246 }
254
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247
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248 // optimize for single-char needles
415
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249 if (needle.length == 1) {
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250 return cx_strchr(haystack, *needle.ptr);
135
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251 }
415
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252
254
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253 /*
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254 * IMPORTANT:
415
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255 * Our prefix table contains the prefix length PLUS ONE
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256 * this is our decision, because we want to use the full range of size_t.
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257 * The original algorithm needs a (-1) at one single place,
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258 * and we want to avoid that.
254
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259 */
415
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260
438
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261 // local prefix table
490
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262 size_t s_prefix_table[CX_STRSTR_SBO_SIZE];
415
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263
438
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264 // check needle length and use appropriate prefix table
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265 // if the pattern exceeds static prefix table, allocate on the heap
490
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diff changeset
266 bool useheap = needle.length >= CX_STRSTR_SBO_SIZE;
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267 register size_t *ptable = useheap ? calloc(needle.length + 1,
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diff changeset
268 sizeof(size_t)) : s_prefix_table;
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269
438
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270 // keep counter in registers
254
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diff changeset
271 register size_t i, j;
415
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272
438
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273 // fill prefix table
415
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274 i = 0;
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275 j = 0;
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276 ptable[i] = j;
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diff changeset
277 while (i < needle.length) {
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278 while (j >= 1 && needle.ptr[j - 1] != needle.ptr[i]) {
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279 j = ptable[j - 1];
135
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280 }
415
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281 i++;
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282 j++;
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diff changeset
283 ptable[i] = j;
254
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284 }
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285
438
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286 // search
415
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diff changeset
287 cxstring result = {NULL, 0};
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288 i = 0;
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289 j = 1;
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diff changeset
290 while (i < haystack.length) {
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diff changeset
291 while (j >= 1 && haystack.ptr[i] != needle.ptr[j - 1]) {
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diff changeset
292 j = ptable[j - 1];
254
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diff changeset
293 }
415
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diff changeset
294 i++;
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diff changeset
295 j++;
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diff changeset
296 if (j - 1 == needle.length) {
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297 size_t start = i - needle.length;
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diff changeset
298 result.ptr = haystack.ptr + start;
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299 result.length = haystack.length - start;
254
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diff changeset
300 break;
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diff changeset
301 }
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diff changeset
302 }
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diff changeset
303
438
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diff changeset
304 // if prefix table was allocated on the heap, free it
254
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diff changeset
305 if (ptable != s_prefix_table) {
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diff changeset
306 free(ptable);
135
471e28cca288 ucx update
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diff changeset
307 }
91
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parents:
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308
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309 return result;
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parents:
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310 }
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parents:
diff changeset
311
415
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parents: 260
diff changeset
312 cxmutstr cx_strstr_m(
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diff changeset
313 cxmutstr haystack,
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diff changeset
314 cxstring needle
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parents: 260
diff changeset
315 ) {
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diff changeset
316 cxstring result = cx_strstr(cx_strcast(haystack), needle);
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diff changeset
317 return (cxmutstr) {(char *) result.ptr, result.length};
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diff changeset
318 }
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parents: 260
diff changeset
319
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parents: 260
diff changeset
320 size_t cx_strsplit(
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diff changeset
321 cxstring string,
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parents: 260
diff changeset
322 cxstring delim,
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parents: 260
diff changeset
323 size_t limit,
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parents: 260
diff changeset
324 cxstring *output
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parents: 260
diff changeset
325 ) {
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
326 // special case: output limit is zero
415
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parents: 260
diff changeset
327 if (limit == 0) return 0;
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parents: 260
diff changeset
328
438
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diff changeset
329 // special case: delimiter is empty
415
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parents: 260
diff changeset
330 if (delim.length == 0) {
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parents: 260
diff changeset
331 output[0] = string;
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parents: 260
diff changeset
332 return 1;
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parents: 260
diff changeset
333 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
334
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
335 // special cases: delimiter is at least as large as the string
415
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parents: 260
diff changeset
336 if (delim.length >= string.length) {
438
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parents: 415
diff changeset
337 // exact match
415
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parents: 260
diff changeset
338 if (cx_strcmp(string, delim) == 0) {
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diff changeset
339 output[0] = cx_strn(string.ptr, 0);
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diff changeset
340 output[1] = cx_strn(string.ptr + string.length, 0);
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parents: 260
diff changeset
341 return 2;
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
342 } else {
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parents: 415
diff changeset
343 // no match possible
415
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parents: 260
diff changeset
344 output[0] = string;
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345 return 1;
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parents: 260
diff changeset
346 }
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parents: 260
diff changeset
347 }
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parents: 260
diff changeset
348
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diff changeset
349 size_t n = 0;
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diff changeset
350 cxstring curpos = string;
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parents: 260
diff changeset
351 while (1) {
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diff changeset
352 ++n;
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diff changeset
353 cxstring match = cx_strstr(curpos, delim);
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diff changeset
354 if (match.length > 0) {
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
355 // is the limit reached?
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
356 if (n < limit) {
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
357 // copy the current string to the array
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
358 cxstring item = cx_strn(curpos.ptr, match.ptr - curpos.ptr);
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parents: 260
diff changeset
359 output[n - 1] = item;
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diff changeset
360 size_t processed = item.length + delim.length;
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diff changeset
361 curpos.ptr += processed;
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diff changeset
362 curpos.length -= processed;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
363 } else {
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
364 // limit reached, copy the _full_ remaining string
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
365 output[n - 1] = curpos;
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diff changeset
366 break;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
367 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
368 } else {
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
369 // no more matches, copy last string
415
d938228c382e switch from ucx 2 to 3
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diff changeset
370 output[n - 1] = curpos;
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diff changeset
371 break;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
372 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
373 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
374
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
375 return n;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
376 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
377
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
378 size_t cx_strsplit_a(
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
379 CxAllocator const *allocator,
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
380 cxstring string,
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
381 cxstring delim,
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
382 size_t limit,
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
383 cxstring **output
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
384 ) {
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
385 // find out how many splits we're going to make and allocate memory
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
386 size_t n = 0;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
387 cxstring curpos = string;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
388 while (1) {
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
389 ++n;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
390 cxstring match = cx_strstr(curpos, delim);
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
391 if (match.length > 0) {
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
392 // is the limit reached?
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
393 if (n < limit) {
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
394 size_t processed = match.ptr - curpos.ptr + delim.length;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
395 curpos.ptr += processed;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
396 curpos.length -= processed;
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
397 } else {
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
398 // limit reached
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
399 break;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
400 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
401 } else {
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
402 // no more matches
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
403 break;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
404 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
405 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
406 *output = cxCalloc(allocator, n, sizeof(cxstring));
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
407 return cx_strsplit(string, delim, n, *output);
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
408 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
409
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
410 size_t cx_strsplit_m(
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
411 cxmutstr string,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
412 cxstring delim,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
413 size_t limit,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
414 cxmutstr *output
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
415 ) {
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
416 return cx_strsplit(cx_strcast(string),
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
417 delim, limit, (cxstring *) output);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
418 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
419
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
420 size_t cx_strsplit_ma(
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
421 CxAllocator const *allocator,
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
422 cxmutstr string,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
423 cxstring delim,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
424 size_t limit,
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
425 cxmutstr **output
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
426 ) {
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
427 return cx_strsplit_a(allocator, cx_strcast(string),
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
428 delim, limit, (cxstring **) output);
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
429 }
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
430
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
431 int cx_strcmp(
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
432 cxstring s1,
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
433 cxstring s2
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
434 ) {
91
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
435 if (s1.length == s2.length) {
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
436 return memcmp(s1.ptr, s2.ptr, s1.length);
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
437 } else if (s1.length > s2.length) {
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
438 return 1;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
439 } else {
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
440 return -1;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
441 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
442 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
443
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
444 int cx_strcasecmp(
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
445 cxstring s1,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
446 cxstring s2
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 260
diff changeset
447 ) {
91
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
448 if (s1.length == s2.length) {
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
449 #ifdef _WIN32
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
450 return _strnicmp(s1.ptr, s2.ptr, s1.length);
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
451 #else
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
452 return strncasecmp(s1.ptr, s2.ptr, s1.length);
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
453 #endif
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
454 } else if (s1.length > s2.length) {
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
455 return 1;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
456 } else {
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
457 return -1;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
458 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
459 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
460
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
461 int cx_strcmp_p(
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
462 void const *s1,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
463 void const *s2
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
464 ) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
465 cxstring const *left = s1;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
466 cxstring const *right = s2;
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467 return cx_strcmp(*left, *right);
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468 }
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diff changeset
469
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diff changeset
470 int cx_strcasecmp_p(
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diff changeset
471 void const *s1,
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diff changeset
472 void const *s2
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diff changeset
473 ) {
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diff changeset
474 cxstring const *left = s1;
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diff changeset
475 cxstring const *right = s2;
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476 return cx_strcasecmp(*left, *right);
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diff changeset
477 }
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diff changeset
478
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diff changeset
479 cxmutstr cx_strdup_a(
490
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diff changeset
480 CxAllocator const *allocator,
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diff changeset
481 cxstring string
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482 ) {
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diff changeset
483 cxmutstr result = {
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484 cxMalloc(allocator, string.length + 1),
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485 string.length
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486 };
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487 if (result.ptr == NULL) {
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488 result.length = 0;
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489 return result;
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490 }
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491 memcpy(result.ptr, string.ptr, string.length);
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492 result.ptr[string.length] = '\0';
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493 return result;
91
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494 }
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495
415
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496 cxstring cx_strtrim(cxstring string) {
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497 cxstring result = string;
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diff changeset
498 // TODO: optimize by comparing multiple bytes at once
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499 while (result.length > 0 && isspace(*result.ptr)) {
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500 result.ptr++;
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501 result.length--;
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502 }
415
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503 while (result.length > 0 && isspace(result.ptr[result.length - 1])) {
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504 result.length--;
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505 }
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diff changeset
506 return result;
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507 }
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diff changeset
508
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diff changeset
509 cxmutstr cx_strtrim_m(cxmutstr string) {
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510 cxstring result = cx_strtrim(cx_strcast(string));
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diff changeset
511 return (cxmutstr) {(char *) result.ptr, result.length};
91
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parents:
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512 }
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parents:
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513
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diff changeset
514 bool cx_strprefix(
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515 cxstring string,
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diff changeset
516 cxstring prefix
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517 ) {
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518 if (string.length < prefix.length) return false;
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diff changeset
519 return memcmp(string.ptr, prefix.ptr, prefix.length) == 0;
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diff changeset
520 }
254
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diff changeset
521
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diff changeset
522 bool cx_strsuffix(
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523 cxstring string,
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524 cxstring suffix
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525 ) {
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526 if (string.length < suffix.length) return false;
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diff changeset
527 return memcmp(string.ptr + string.length - suffix.length,
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diff changeset
528 suffix.ptr, suffix.length) == 0;
254
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diff changeset
529 }
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diff changeset
530
415
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diff changeset
531 bool cx_strcaseprefix(
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532 cxstring string,
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533 cxstring prefix
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534 ) {
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535 if (string.length < prefix.length) return false;
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diff changeset
536 #ifdef _WIN32
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537 return _strnicmp(string.ptr, prefix.ptr, prefix.length) == 0;
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diff changeset
538 #else
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diff changeset
539 return strncasecmp(string.ptr, prefix.ptr, prefix.length) == 0;
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diff changeset
540 #endif
91
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parents:
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541 }
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parents:
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542
415
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diff changeset
543 bool cx_strcasesuffix(
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diff changeset
544 cxstring string,
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diff changeset
545 cxstring suffix
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diff changeset
546 ) {
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parents: 260
diff changeset
547 if (string.length < suffix.length) return false;
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parents: 260
diff changeset
548 #ifdef _WIN32
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diff changeset
549 return _strnicmp(string.ptr+string.length-suffix.length,
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parents: 260
diff changeset
550 suffix.ptr, suffix.length) == 0;
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diff changeset
551 #else
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diff changeset
552 return strncasecmp(string.ptr + string.length - suffix.length,
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parents: 260
diff changeset
553 suffix.ptr, suffix.length) == 0;
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parents: 260
diff changeset
554 #endif
254
4784c14aa639 ucx update
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diff changeset
555 }
4784c14aa639 ucx update
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diff changeset
556
415
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parents: 260
diff changeset
557 void cx_strlower(cxmutstr string) {
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parents: 260
diff changeset
558 cx_for_n(i, string.length) {
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parents: 260
diff changeset
559 string.ptr[i] = (char) tolower(string.ptr[i]);
91
fac51f87def0 ucx update
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parents:
diff changeset
560 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
561 }
fac51f87def0 ucx update
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parents:
diff changeset
562
415
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diff changeset
563 void cx_strupper(cxmutstr string) {
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parents: 260
diff changeset
564 cx_for_n(i, string.length) {
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diff changeset
565 string.ptr[i] = (char) toupper(string.ptr[i]);
254
4784c14aa639 ucx update
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parents: 135
diff changeset
566 }
99
b9a6af0ae41a ucx update
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parents: 91
diff changeset
567 }
254
4784c14aa639 ucx update
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parents: 135
diff changeset
568
490
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parents: 438
diff changeset
569 #ifndef CX_STRREPLACE_INDEX_BUFFER_SIZE
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parents: 438
diff changeset
570 #define CX_STRREPLACE_INDEX_BUFFER_SIZE 64
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parents: 438
diff changeset
571 #endif
260
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parents: 254
diff changeset
572
415
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parents: 260
diff changeset
573 struct cx_strreplace_ibuf {
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parents: 260
diff changeset
574 size_t *buf;
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diff changeset
575 struct cx_strreplace_ibuf *next;
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diff changeset
576 unsigned int len;
260
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diff changeset
577 };
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
578
415
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parents: 260
diff changeset
579 static void cx_strrepl_free_ibuf(struct cx_strreplace_ibuf *buf) {
260
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parents: 254
diff changeset
580 while (buf) {
415
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parents: 260
diff changeset
581 struct cx_strreplace_ibuf *next = buf->next;
260
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parents: 254
diff changeset
582 free(buf->buf);
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parents: 254
diff changeset
583 free(buf);
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parents: 254
diff changeset
584 buf = next;
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parents: 254
diff changeset
585 }
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parents: 254
diff changeset
586 }
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parents: 254
diff changeset
587
415
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parents: 260
diff changeset
588 cxmutstr cx_strreplacen_a(
490
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parents: 438
diff changeset
589 CxAllocator const *allocator,
415
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diff changeset
590 cxstring str,
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parents: 260
diff changeset
591 cxstring pattern,
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parents: 260
diff changeset
592 cxstring replacement,
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parents: 260
diff changeset
593 size_t replmax
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parents: 260
diff changeset
594 ) {
260
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diff changeset
595
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
596 if (pattern.length == 0 || pattern.length > str.length || replmax == 0)
415
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parents: 260
diff changeset
597 return cx_strdup_a(allocator, str);
260
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parents: 254
diff changeset
598
438
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parents: 415
diff changeset
599 // Compute expected buffer length
260
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parents: 254
diff changeset
600 size_t ibufmax = str.length / pattern.length;
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parents: 254
diff changeset
601 size_t ibuflen = replmax < ibufmax ? replmax : ibufmax;
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
602 if (ibuflen > CX_STRREPLACE_INDEX_BUFFER_SIZE) {
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parents: 438
diff changeset
603 ibuflen = CX_STRREPLACE_INDEX_BUFFER_SIZE;
260
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diff changeset
604 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
605
438
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parents: 415
diff changeset
606 // Allocate first index buffer
415
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parents: 260
diff changeset
607 struct cx_strreplace_ibuf *firstbuf, *curbuf;
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parents: 260
diff changeset
608 firstbuf = curbuf = calloc(1, sizeof(struct cx_strreplace_ibuf));
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parents: 260
diff changeset
609 if (!firstbuf) return cx_mutstrn(NULL, 0);
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
610 firstbuf->buf = calloc(ibuflen, sizeof(size_t));
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parents: 254
diff changeset
611 if (!firstbuf->buf) {
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parents: 254
diff changeset
612 free(firstbuf);
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
613 return cx_mutstrn(NULL, 0);
260
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parents: 254
diff changeset
614 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
615
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
616 // Search occurrences
415
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parents: 260
diff changeset
617 cxstring searchstr = str;
260
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parents: 254
diff changeset
618 size_t found = 0;
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diff changeset
619 do {
415
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diff changeset
620 cxstring match = cx_strstr(searchstr, pattern);
260
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diff changeset
621 if (match.length > 0) {
438
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diff changeset
622 // Allocate next buffer in chain, if required
260
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parents: 254
diff changeset
623 if (curbuf->len == ibuflen) {
415
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parents: 260
diff changeset
624 struct cx_strreplace_ibuf *nextbuf =
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diff changeset
625 calloc(1, sizeof(struct cx_strreplace_ibuf));
260
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diff changeset
626 if (!nextbuf) {
415
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diff changeset
627 cx_strrepl_free_ibuf(firstbuf);
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diff changeset
628 return cx_mutstrn(NULL, 0);
260
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diff changeset
629 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
630 nextbuf->buf = calloc(ibuflen, sizeof(size_t));
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parents: 254
diff changeset
631 if (!nextbuf->buf) {
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diff changeset
632 free(nextbuf);
415
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diff changeset
633 cx_strrepl_free_ibuf(firstbuf);
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diff changeset
634 return cx_mutstrn(NULL, 0);
260
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diff changeset
635 }
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parents: 254
diff changeset
636 curbuf->next = nextbuf;
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diff changeset
637 curbuf = nextbuf;
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parents: 254
diff changeset
638 }
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parents: 254
diff changeset
639
438
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diff changeset
640 // Record match index
260
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diff changeset
641 found++;
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diff changeset
642 size_t idx = match.ptr - str.ptr;
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diff changeset
643 curbuf->buf[curbuf->len++] = idx;
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diff changeset
644 searchstr.ptr = match.ptr + pattern.length;
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diff changeset
645 searchstr.length = str.length - idx - pattern.length;
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
646 } else {
4779a6fb4fbe fix freebsd build
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diff changeset
647 break;
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
648 }
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parents: 254
diff changeset
649 } while (searchstr.length > 0 && found < replmax);
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parents: 254
diff changeset
650
438
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diff changeset
651 // Allocate result string
415
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diff changeset
652 cxmutstr result;
260
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diff changeset
653 {
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diff changeset
654 ssize_t adjlen = (ssize_t) replacement.length - (ssize_t) pattern.length;
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diff changeset
655 size_t rcount = 0;
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parents: 254
diff changeset
656 curbuf = firstbuf;
4779a6fb4fbe fix freebsd build
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diff changeset
657 do {
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parents: 254
diff changeset
658 rcount += curbuf->len;
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parents: 254
diff changeset
659 curbuf = curbuf->next;
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parents: 254
diff changeset
660 } while (curbuf);
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parents: 254
diff changeset
661 result.length = str.length + rcount * adjlen;
415
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diff changeset
662 result.ptr = cxMalloc(allocator, result.length + 1);
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
663 if (!result.ptr) {
415
d938228c382e switch from ucx 2 to 3
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diff changeset
664 cx_strrepl_free_ibuf(firstbuf);
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parents: 260
diff changeset
665 return cx_mutstrn(NULL, 0);
260
4779a6fb4fbe fix freebsd build
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diff changeset
666 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
667 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
668
438
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diff changeset
669 // Build result string
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
670 curbuf = firstbuf;
4779a6fb4fbe fix freebsd build
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diff changeset
671 size_t srcidx = 0;
415
d938228c382e switch from ucx 2 to 3
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diff changeset
672 char *destptr = result.ptr;
260
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diff changeset
673 do {
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
674 for (size_t i = 0; i < curbuf->len; i++) {
438
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parents: 415
diff changeset
675 // Copy source part up to next match
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
676 size_t idx = curbuf->buf[i];
4779a6fb4fbe fix freebsd build
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diff changeset
677 size_t srclen = idx - srcidx;
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parents: 254
diff changeset
678 if (srclen > 0) {
415
d938228c382e switch from ucx 2 to 3
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parents: 260
diff changeset
679 memcpy(destptr, str.ptr + srcidx, srclen);
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
680 destptr += srclen;
4779a6fb4fbe fix freebsd build
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diff changeset
681 srcidx += srclen;
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diff changeset
682 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
683
438
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parents: 415
diff changeset
684 // Copy the replacement and skip the source pattern
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
685 srcidx += pattern.length;
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
686 memcpy(destptr, replacement.ptr, replacement.length);
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
687 destptr += replacement.length;
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parents: 254
diff changeset
688 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
689 curbuf = curbuf->next;
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parents: 254
diff changeset
690 } while (curbuf);
415
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parents: 260
diff changeset
691 memcpy(destptr, str.ptr + srcidx, str.length - srcidx);
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parents: 260
diff changeset
692
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
693 // Result is guaranteed to be zero-terminated
415
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parents: 260
diff changeset
694 result.ptr[result.length] = '\0';
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
695
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
696 // Free index buffer
415
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parents: 260
diff changeset
697 cx_strrepl_free_ibuf(firstbuf);
260
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
698
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
699 return result;
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
700 }
4779a6fb4fbe fix freebsd build
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parents: 254
diff changeset
701
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
702 CxStrtokCtx cx_strtok(
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
703 cxstring str,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
704 cxstring delim,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
705 size_t limit
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
706 ) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
707 CxStrtokCtx ctx;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
708 ctx.str = str;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
709 ctx.delim = delim;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
710 ctx.limit = limit;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
711 ctx.pos = 0;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
712 ctx.next_pos = 0;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
713 ctx.delim_pos = 0;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
714 ctx.found = 0;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
715 ctx.delim_more = NULL;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
716 ctx.delim_more_count = 0;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
717 return ctx;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
718 }
260
4779a6fb4fbe fix freebsd build
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 254
diff changeset
719
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
720 CxStrtokCtx cx_strtok_m(
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
721 cxmutstr str,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
722 cxstring delim,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
723 size_t limit
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
724 ) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
725 return cx_strtok(cx_strcast(str), delim, limit);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
726 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
727
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
728 bool cx_strtok_next(
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
729 CxStrtokCtx *ctx,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
730 cxstring *token
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
731 ) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
732 // abortion criteria
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
733 if (ctx->found >= ctx->limit || ctx->delim_pos >= ctx->str.length) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
734 return false;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
735 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
736
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
737 // determine the search start
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
738 cxstring haystack = cx_strsubs(ctx->str, ctx->next_pos);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
739
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
740 // search the next delimiter
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
741 cxstring delim = cx_strstr(haystack, ctx->delim);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
742
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
743 // if found, make delim capture exactly the delimiter
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
744 if (delim.length > 0) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
745 delim.length = ctx->delim.length;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
746 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
747
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
748 // if more delimiters are specified, check them now
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
749 if (ctx->delim_more_count > 0) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
750 cx_for_n(i, ctx->delim_more_count) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
751 cxstring d = cx_strstr(haystack, ctx->delim_more[i]);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
752 if (d.length > 0 && (delim.length == 0 || d.ptr < delim.ptr)) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
753 delim.ptr = d.ptr;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
754 delim.length = ctx->delim_more[i].length;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
755 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
756 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
757 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
758
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
759 // store the token information and adjust the context
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
760 ctx->found++;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
761 ctx->pos = ctx->next_pos;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
762 token->ptr = &ctx->str.ptr[ctx->pos];
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
763 ctx->delim_pos = delim.length == 0 ?
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
764 ctx->str.length : (size_t) (delim.ptr - ctx->str.ptr);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
765 token->length = ctx->delim_pos - ctx->pos;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
766 ctx->next_pos = ctx->delim_pos + delim.length;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
767
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
768 return true;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
769 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
770
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
771 bool cx_strtok_next_m(
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
772 CxStrtokCtx *ctx,
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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773 cxmutstr *token
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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774 ) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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775 return cx_strtok_next(ctx, (cxstring *) token);
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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776 }
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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777
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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778 void cx_strtok_delim(
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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779 CxStrtokCtx *ctx,
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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780 cxstring const *delim,
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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781 size_t count
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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782 ) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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783 ctx->delim_more = delim;
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
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784 ctx->delim_more_count = count;
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
785 }

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