Sat, 12 Nov 2022 17:00:16 +0100
add check if pidfile can be opened
91 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
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4 | * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved. |
91 | 5 | * |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
28 | ||
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29 | #include "cx/string.h" |
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30 | #include "cx/utils.h" |
254 | 31 | |
91 | 32 | #include <string.h> |
33 | #include <stdarg.h> | |
99 | 34 | #include <ctype.h> |
91 | 35 | |
254 | 36 | #ifndef _WIN32 |
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37 | |
254 | 38 | #include <strings.h> /* for strncasecmp() */ |
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39 | |
254 | 40 | #endif /* _WIN32 */ |
91 | 41 | |
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42 | cxmutstr cx_mutstr(char *cstring) { |
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43 | return (cxmutstr) {cstring, strlen(cstring)}; |
91 | 44 | } |
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}; |
91 | 62 | } |
63 | ||
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64 | cxstring cx_strcast(cxmutstr str) { |
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65 | return (cxstring) {str.ptr, str.length}; |
254 | 66 | } |
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; |
254 | 72 | } |
73 | ||
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74 | void cx_strfree_a( |
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75 | CxAllocator *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 | } |
254 | 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 | |
91 | 89 | va_list ap; |
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90 | va_start(ap, count); |
254 | 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); |
91 | 94 | size += str.length; |
95 | } | |
96 | va_end(ap); | |
97 | ||
98 | return size; | |
99 | } | |
100 | ||
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101 | cxmutstr cx_strcat_a( |
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102 | CxAllocator *alloc, |
99 | 103 | size_t count, |
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104 | ... |
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105 | ) { |
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106 | cxstring *strings = calloc(count, sizeof(cxstring)); |
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107 | if (!strings) abort(); |
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108 | |
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109 | va_list ap; |
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110 | va_start(ap, count); |
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111 | |
99 | 112 | // get all args and overall length |
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113 | size_t slen = 0; |
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114 | cx_for_n(i, count) { |
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115 | cxstring s = va_arg (ap, cxstring); |
99 | 116 | strings[i] = s; |
254 | 117 | slen += s.length; |
118 | } | |
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119 | |
99 | 120 | // create new string |
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121 | cxmutstr result; |
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122 | result.ptr = cxMalloc(alloc, slen + 1); |
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123 | result.length = slen; |
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124 | if (result.ptr == NULL) abort(); |
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125 | |
99 | 126 | // concatenate strings |
127 | size_t pos = 0; | |
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128 | cx_for_n(i, count) { |
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129 | cxstring s = strings[i]; |
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130 | memcpy(result.ptr + pos, s.ptr, s.length); |
99 | 131 | pos += s.length; |
91 | 132 | } |
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133 | |
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134 | // terminate string |
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135 | result.ptr[result.length] = '\0'; |
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136 | |
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137 | // free temporary array |
99 | 138 | free(strings); |
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139 | |
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140 | return result; |
99 | 141 | } |
142 | ||
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143 | cxstring cx_strsubs( |
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144 | cxstring string, |
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145 | size_t start |
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146 | ) { |
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147 | return cx_strsubsl(string, start, string.length - start); |
254 | 148 | } |
149 | ||
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150 | cxmutstr cx_strsubs_m( |
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151 | cxmutstr string, |
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152 | size_t start |
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153 | ) { |
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154 | return cx_strsubsl_m(string, start, string.length - start); |
99 | 155 | } |
91 | 156 | |
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157 | cxstring cx_strsubsl( |
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158 | cxstring string, |
254 | 159 | size_t start, |
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160 | size_t length |
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161 | ) { |
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162 | if (start > string.length) { |
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163 | return (cxstring) {NULL, 0}; |
254 | 164 | } |
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165 | |
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166 | size_t rem_len = string.length - start; |
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167 | if (length > rem_len) { |
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168 | length = rem_len; |
254 | 169 | } |
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170 | |
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171 | return (cxstring) {string.ptr + start, length}; |
91 | 172 | } |
173 | ||
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174 | cxmutstr cx_strsubsl_m( |
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175 | cxmutstr string, |
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176 | size_t start, |
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177 | size_t length |
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178 | ) { |
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179 | cxstring result = cx_strsubsl(cx_strcast(string), start, length); |
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180 | return (cxmutstr) {(char *) result.ptr, result.length}; |
254 | 181 | } |
182 | ||
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183 | cxstring cx_strchr( |
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184 | cxstring string, |
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185 | int chr |
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186 | ) { |
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187 | chr = 0xFF & chr; |
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188 | // TODO: improve by comparing multiple bytes at once |
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189 | cx_for_n(i, string.length) { |
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190 | if (string.ptr[i] == chr) { |
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191 | return cx_strsubs(string, i); |
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192 | } |
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193 | } |
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194 | return (cxstring) {NULL, 0}; |
254 | 195 | } |
196 | ||
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197 | cxmutstr cx_strchr_m( |
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198 | cxmutstr string, |
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199 | int chr |
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200 | ) { |
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201 | cxstring result = cx_strchr(cx_strcast(string), chr); |
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202 | return (cxmutstr) {(char *) result.ptr, result.length}; |
254 | 203 | } |
204 | ||
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205 | cxstring cx_strrchr( |
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206 | cxstring string, |
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207 | int chr |
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208 | ) { |
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209 | chr = 0xFF & chr; |
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210 | size_t i = string.length; |
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211 | while (i > 0) { |
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212 | i--; |
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213 | // TODO: improve by comparing multiple bytes at once |
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214 | if (string.ptr[i] == chr) { |
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215 | return cx_strsubs(string, i); |
254 | 216 | } |
217 | } | |
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218 | return (cxstring) {NULL, 0}; |
91 | 219 | } |
220 | ||
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221 | cxmutstr cx_strrchr_m( |
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222 | cxmutstr string, |
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223 | int chr |
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224 | ) { |
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225 | cxstring result = cx_strrchr(cx_strcast(string), chr); |
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226 | return (cxmutstr) {(char *) result.ptr, result.length}; |
91 | 227 | } |
228 | ||
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229 | #define STRSTR_SBO_BUFLEN 512 |
254 | 230 | |
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231 | cxstring cx_strstr( |
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232 | cxstring haystack, |
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233 | cxstring needle |
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234 | ) { |
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235 | if (needle.length == 0) { |
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236 | return haystack; |
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237 | } |
254 | 238 | |
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239 | /* optimize for single-char needles */ |
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240 | if (needle.length == 1) { |
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241 | return cx_strchr(haystack, *needle.ptr); |
135 | 242 | } |
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243 | |
254 | 244 | /* |
245 | * IMPORTANT: | |
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246 | * Our prefix table contains the prefix length PLUS ONE |
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247 | * this is our decision, because we want to use the full range of size_t. |
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248 | * The original algorithm needs a (-1) at one single place, |
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249 | * and we want to avoid that. |
254 | 250 | */ |
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251 | |
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252 | /* local prefix table */ |
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253 | size_t s_prefix_table[STRSTR_SBO_BUFLEN]; |
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254 | |
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255 | /* check needle length and use appropriate prefix table */ |
254 | 256 | /* if the pattern exceeds static prefix table, allocate on the heap */ |
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257 | bool useheap = needle.length >= STRSTR_SBO_BUFLEN; |
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258 | register size_t *ptable = useheap ? calloc(needle.length + 1, |
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259 | sizeof(size_t)) : s_prefix_table; |
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260 | |
254 | 261 | /* keep counter in registers */ |
262 | register size_t i, j; | |
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263 | |
254 | 264 | /* fill prefix table */ |
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265 | i = 0; |
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266 | j = 0; |
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267 | ptable[i] = j; |
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268 | while (i < needle.length) { |
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269 | while (j >= 1 && needle.ptr[j - 1] != needle.ptr[i]) { |
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270 | j = ptable[j - 1]; |
135 | 271 | } |
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272 | i++; |
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273 | j++; |
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274 | ptable[i] = j; |
254 | 275 | } |
276 | ||
277 | /* search */ | |
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278 | cxstring result = {NULL, 0}; |
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279 | i = 0; |
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280 | j = 1; |
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281 | while (i < haystack.length) { |
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282 | while (j >= 1 && haystack.ptr[i] != needle.ptr[j - 1]) { |
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283 | j = ptable[j - 1]; |
254 | 284 | } |
415
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285 | i++; |
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286 | j++; |
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287 | if (j - 1 == needle.length) { |
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288 | size_t start = i - needle.length; |
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289 | result.ptr = haystack.ptr + start; |
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290 | result.length = haystack.length - start; |
254 | 291 | break; |
292 | } | |
293 | } | |
294 | ||
295 | /* if prefix table was allocated on the heap, free it */ | |
296 | if (ptable != s_prefix_table) { | |
297 | free(ptable); | |
135 | 298 | } |
91 | 299 | |
300 | return result; | |
301 | } | |
302 | ||
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303 | cxmutstr cx_strstr_m( |
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304 | cxmutstr haystack, |
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305 | cxstring needle |
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306 | ) { |
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307 | cxstring result = cx_strstr(cx_strcast(haystack), needle); |
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308 | return (cxmutstr) {(char *) result.ptr, result.length}; |
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309 | } |
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310 | |
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311 | size_t cx_strsplit( |
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312 | cxstring string, |
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313 | cxstring delim, |
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314 | size_t limit, |
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315 | cxstring *output |
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316 | ) { |
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317 | /* special case: output limit is zero */ |
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318 | if (limit == 0) return 0; |
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319 | |
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320 | /* special case: delimiter is empty */ |
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321 | if (delim.length == 0) { |
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322 | output[0] = string; |
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323 | return 1; |
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324 | } |
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325 | |
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326 | /* special cases: delimiter is at least as large as the string */ |
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327 | if (delim.length >= string.length) { |
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328 | /* exact match */ |
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329 | if (cx_strcmp(string, delim) == 0) { |
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330 | output[0] = cx_strn(string.ptr, 0); |
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331 | output[1] = cx_strn(string.ptr + string.length, 0); |
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332 | return 2; |
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333 | } else /* no match possible */ { |
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334 | output[0] = string; |
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335 | return 1; |
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336 | } |
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337 | } |
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338 | |
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339 | size_t n = 0; |
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340 | cxstring curpos = string; |
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341 | while (1) { |
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342 | ++n; |
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343 | cxstring match = cx_strstr(curpos, delim); |
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344 | if (match.length > 0) { |
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345 | /* is the limit reached? */ |
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346 | if (n < limit) { |
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347 | /* copy the current string to the array */ |
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348 | cxstring item = cx_strn(curpos.ptr, match.ptr - curpos.ptr); |
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349 | output[n - 1] = item; |
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350 | size_t processed = item.length + delim.length; |
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351 | curpos.ptr += processed; |
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352 | curpos.length -= processed; |
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353 | } else { |
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354 | /* limit reached, copy the _full_ remaining string */ |
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355 | output[n - 1] = curpos; |
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356 | break; |
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357 | } |
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358 | } else { |
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359 | /* no more matches, copy last string */ |
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360 | output[n - 1] = curpos; |
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361 | break; |
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362 | } |
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363 | } |
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364 | |
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365 | return n; |
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366 | } |
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367 | |
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368 | size_t cx_strsplit_a( |
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369 | CxAllocator *allocator, |
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370 | cxstring string, |
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371 | cxstring delim, |
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372 | size_t limit, |
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373 | cxstring **output |
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374 | ) { |
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375 | /* find out how many splits we're going to make and allocate memory */ |
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376 | size_t n = 0; |
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377 | cxstring curpos = string; |
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378 | while (1) { |
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379 | ++n; |
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380 | cxstring match = cx_strstr(curpos, delim); |
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381 | if (match.length > 0) { |
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382 | /* is the limit reached? */ |
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383 | if (n < limit) { |
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384 | size_t processed = match.ptr - curpos.ptr + delim.length; |
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385 | curpos.ptr += processed; |
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386 | curpos.length -= processed; |
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387 | } else { |
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388 | /* limit reached */ |
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389 | break; |
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390 | } |
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391 | } else { |
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392 | /* no more matches */ |
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393 | break; |
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394 | } |
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395 | } |
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396 | *output = cxCalloc(allocator, n, sizeof(cxstring)); |
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397 | return cx_strsplit(string, delim, n, *output); |
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398 | } |
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399 | |
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400 | size_t cx_strsplit_m( |
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401 | cxmutstr string, |
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402 | cxstring delim, |
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403 | size_t limit, |
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404 | cxmutstr *output |
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405 | ) { |
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406 | return cx_strsplit(cx_strcast(string), |
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407 | delim, limit, (cxstring *) output); |
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408 | } |
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409 | |
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410 | size_t cx_strsplit_ma( |
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411 | CxAllocator *allocator, |
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412 | cxmutstr string, |
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413 | cxstring delim, |
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414 | size_t limit, |
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415 | cxmutstr **output |
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416 | ) { |
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417 | return cx_strsplit_a(allocator, cx_strcast(string), |
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418 | delim, limit, (cxstring **) output); |
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419 | } |
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420 | |
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421 | int cx_strcmp( |
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422 | cxstring s1, |
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423 | cxstring s2 |
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424 | ) { |
91 | 425 | if (s1.length == s2.length) { |
426 | return memcmp(s1.ptr, s2.ptr, s1.length); | |
427 | } else if (s1.length > s2.length) { | |
428 | return 1; | |
429 | } else { | |
430 | return -1; | |
431 | } | |
432 | } | |
433 | ||
415
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434 | int cx_strcasecmp( |
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435 | cxstring s1, |
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436 | cxstring s2 |
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437 | ) { |
91 | 438 | if (s1.length == s2.length) { |
439 | #ifdef _WIN32 | |
440 | return _strnicmp(s1.ptr, s2.ptr, s1.length); | |
441 | #else | |
442 | return strncasecmp(s1.ptr, s2.ptr, s1.length); | |
443 | #endif | |
444 | } else if (s1.length > s2.length) { | |
445 | return 1; | |
446 | } else { | |
447 | return -1; | |
448 | } | |
449 | } | |
450 | ||
415
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451 | cxmutstr cx_strdup_a( |
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452 | CxAllocator *allocator, |
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453 | cxstring string |
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454 | ) { |
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455 | cxmutstr result = { |
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456 | cxMalloc(allocator, string.length + 1), |
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457 | string.length |
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458 | }; |
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459 | if (result.ptr == NULL) { |
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460 | result.length = 0; |
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461 | return result; |
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462 | } |
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463 | memcpy(result.ptr, string.ptr, string.length); |
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464 | result.ptr[string.length] = '\0'; |
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465 | return result; |
91 | 466 | } |
467 | ||
415
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468 | cxstring cx_strtrim(cxstring string) { |
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469 | cxstring result = string; |
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470 | // TODO: optimize by comparing multiple bytes at once |
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471 | while (result.length > 0 && isspace(*result.ptr)) { |
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472 | result.ptr++; |
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473 | result.length--; |
91 | 474 | } |
415
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475 | while (result.length > 0 && isspace(result.ptr[result.length - 1])) { |
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476 | result.length--; |
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477 | } |
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478 | return result; |
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479 | } |
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480 | |
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481 | cxmutstr cx_strtrim_m(cxmutstr string) { |
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482 | cxstring result = cx_strtrim(cx_strcast(string)); |
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483 | return (cxmutstr) {(char *) result.ptr, result.length}; |
91 | 484 | } |
485 | ||
415
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486 | bool cx_strprefix( |
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487 | cxstring string, |
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488 | cxstring prefix |
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489 | ) { |
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490 | if (string.length < prefix.length) return false; |
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491 | return memcmp(string.ptr, prefix.ptr, prefix.length) == 0; |
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492 | } |
254 | 493 | |
415
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494 | bool cx_strsuffix( |
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495 | cxstring string, |
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496 | cxstring suffix |
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497 | ) { |
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498 | if (string.length < suffix.length) return false; |
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499 | return memcmp(string.ptr + string.length - suffix.length, |
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500 | suffix.ptr, suffix.length) == 0; |
254 | 501 | } |
502 | ||
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503 | bool cx_strcaseprefix( |
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504 | cxstring string, |
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505 | cxstring prefix |
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506 | ) { |
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507 | if (string.length < prefix.length) return false; |
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508 | #ifdef _WIN32 |
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509 | return _strnicmp(string.ptr, prefix.ptr, prefix.length) == 0; |
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510 | #else |
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511 | return strncasecmp(string.ptr, prefix.ptr, prefix.length) == 0; |
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512 | #endif |
91 | 513 | } |
514 | ||
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515 | bool cx_strcasesuffix( |
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516 | cxstring string, |
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517 | cxstring suffix |
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518 | ) { |
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519 | if (string.length < suffix.length) return false; |
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520 | #ifdef _WIN32 |
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521 | return _strnicmp(string.ptr+string.length-suffix.length, |
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522 | suffix.ptr, suffix.length) == 0; |
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523 | #else |
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524 | return strncasecmp(string.ptr + string.length - suffix.length, |
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525 | suffix.ptr, suffix.length) == 0; |
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526 | #endif |
254 | 527 | } |
528 | ||
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529 | void cx_strlower(cxmutstr string) { |
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530 | cx_for_n(i, string.length) { |
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531 | string.ptr[i] = (char) tolower(string.ptr[i]); |
91 | 532 | } |
533 | } | |
534 | ||
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535 | void cx_strupper(cxmutstr string) { |
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536 | cx_for_n(i, string.length) { |
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537 | string.ptr[i] = (char) toupper(string.ptr[i]); |
254 | 538 | } |
99 | 539 | } |
254 | 540 | |
260
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541 | #define REPLACE_INDEX_BUFFER_MAX 100 |
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542 | |
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543 | struct cx_strreplace_ibuf { |
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544 | size_t *buf; |
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545 | struct cx_strreplace_ibuf *next; |
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546 | unsigned int len; |
260
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547 | }; |
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548 | |
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549 | static void cx_strrepl_free_ibuf(struct cx_strreplace_ibuf *buf) { |
260
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550 | while (buf) { |
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551 | struct cx_strreplace_ibuf *next = buf->next; |
260
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552 | free(buf->buf); |
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553 | free(buf); |
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554 | buf = next; |
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555 | } |
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556 | } |
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557 | |
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558 | cxmutstr cx_strreplacen_a( |
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559 | CxAllocator *allocator, |
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560 | cxstring str, |
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561 | cxstring pattern, |
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562 | cxstring replacement, |
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563 | size_t replmax |
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564 | ) { |
260
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565 | |
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566 | if (pattern.length == 0 || pattern.length > str.length || replmax == 0) |
415
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567 | return cx_strdup_a(allocator, str); |
260
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568 | |
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569 | /* Compute expected buffer length */ |
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570 | size_t ibufmax = str.length / pattern.length; |
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571 | size_t ibuflen = replmax < ibufmax ? replmax : ibufmax; |
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572 | if (ibuflen > REPLACE_INDEX_BUFFER_MAX) { |
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573 | ibuflen = REPLACE_INDEX_BUFFER_MAX; |
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574 | } |
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575 | |
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576 | /* Allocate first index buffer */ |
415
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577 | struct cx_strreplace_ibuf *firstbuf, *curbuf; |
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578 | firstbuf = curbuf = calloc(1, sizeof(struct cx_strreplace_ibuf)); |
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579 | if (!firstbuf) return cx_mutstrn(NULL, 0); |
260
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580 | firstbuf->buf = calloc(ibuflen, sizeof(size_t)); |
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581 | if (!firstbuf->buf) { |
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582 | free(firstbuf); |
415
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583 | return cx_mutstrn(NULL, 0); |
260
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584 | } |
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585 | |
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586 | /* Search occurrences */ |
415
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587 | cxstring searchstr = str; |
260
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588 | size_t found = 0; |
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589 | do { |
415
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590 | cxstring match = cx_strstr(searchstr, pattern); |
260
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591 | if (match.length > 0) { |
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592 | /* Allocate next buffer in chain, if required */ |
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593 | if (curbuf->len == ibuflen) { |
415
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594 | struct cx_strreplace_ibuf *nextbuf = |
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595 | calloc(1, sizeof(struct cx_strreplace_ibuf)); |
260
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596 | if (!nextbuf) { |
415
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597 | cx_strrepl_free_ibuf(firstbuf); |
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598 | return cx_mutstrn(NULL, 0); |
260
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599 | } |
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600 | nextbuf->buf = calloc(ibuflen, sizeof(size_t)); |
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601 | if (!nextbuf->buf) { |
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602 | free(nextbuf); |
415
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603 | cx_strrepl_free_ibuf(firstbuf); |
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604 | return cx_mutstrn(NULL, 0); |
260
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605 | } |
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606 | curbuf->next = nextbuf; |
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607 | curbuf = nextbuf; |
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608 | } |
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609 | |
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610 | /* Record match index */ |
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611 | found++; |
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612 | size_t idx = match.ptr - str.ptr; |
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613 | curbuf->buf[curbuf->len++] = idx; |
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614 | searchstr.ptr = match.ptr + pattern.length; |
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615 | searchstr.length = str.length - idx - pattern.length; |
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616 | } else { |
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617 | break; |
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618 | } |
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619 | } while (searchstr.length > 0 && found < replmax); |
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620 | |
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621 | /* Allocate result string */ |
415
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622 | cxmutstr result; |
260
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623 | { |
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624 | ssize_t adjlen = (ssize_t) replacement.length - (ssize_t) pattern.length; |
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625 | size_t rcount = 0; |
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626 | curbuf = firstbuf; |
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627 | do { |
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628 | rcount += curbuf->len; |
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629 | curbuf = curbuf->next; |
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630 | } while (curbuf); |
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631 | result.length = str.length + rcount * adjlen; |
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632 | result.ptr = cxMalloc(allocator, result.length + 1); |
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633 | if (!result.ptr) { |
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634 | cx_strrepl_free_ibuf(firstbuf); |
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635 | return cx_mutstrn(NULL, 0); |
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636 | } |
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637 | } |
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638 | |
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639 | /* Build result string */ |
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640 | curbuf = firstbuf; |
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641 | size_t srcidx = 0; |
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642 | char *destptr = result.ptr; |
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643 | do { |
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644 | for (size_t i = 0; i < curbuf->len; i++) { |
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645 | /* Copy source part up to next match*/ |
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646 | size_t idx = curbuf->buf[i]; |
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647 | size_t srclen = idx - srcidx; |
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648 | if (srclen > 0) { |
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649 | memcpy(destptr, str.ptr + srcidx, srclen); |
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650 | destptr += srclen; |
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651 | srcidx += srclen; |
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652 | } |
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653 | |
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654 | /* Copy the replacement and skip the source pattern */ |
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655 | srcidx += pattern.length; |
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656 | memcpy(destptr, replacement.ptr, replacement.length); |
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657 | destptr += replacement.length; |
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658 | } |
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659 | curbuf = curbuf->next; |
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660 | } while (curbuf); |
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661 | memcpy(destptr, str.ptr + srcidx, str.length - srcidx); |
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662 | |
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663 | /* Result is guaranteed to be zero-terminated */ |
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664 | result.ptr[result.length] = '\0'; |
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665 | |
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666 | /* Free index buffer */ |
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667 | cx_strrepl_free_ibuf(firstbuf); |
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668 | |
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669 | return result; |
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670 | } |
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671 | |
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672 |