Mercurial > trustbridge
annotate common/strhelp.c @ 1387:c64b6c56ce96 0.9.8
(issue95) Change keys for release build. Fix release build usage.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Thu, 15 Jan 2015 16:46:36 +0100 |
parents | ffdc8cba139a |
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rev | line source |
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404 | 1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik |
2 * Software engineering by Intevation GmbH | |
3 * | |
4 * This file is Free Software under the GNU GPL (v>=2) | |
5 * and comes with ABSOLUTELY NO WARRANTY! | |
6 * See LICENSE.txt for details. | |
7 */ | |
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8 /* Needed to get asprintf */ |
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9 #define _GNU_SOURCE 1 |
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10 |
134 | 11 #include <ctype.h> |
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12 #include <stdarg.h> |
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13 #include <stdbool.h> |
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14 #include <stdio.h> |
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15 #include <stdlib.h> |
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16 #include <string.h> |
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17 #include <assert.h> |
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18 |
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19 #include <polarssl/base64.h> |
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20 |
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21 #ifdef WIN32 |
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22 #include <windows.h> |
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23 #endif |
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24 |
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25 /* Remarks regarding the "Flawfinder: ignore" comments in this file: |
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26 * |
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27 * - strlen: |
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28 * |
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29 * It's true that strlen might crash if input is not null |
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30 * terminated. But by design there is not safe way to get the |
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31 * length of an string in C, and defining an additional length |
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32 * parameter for string parameter will only transfere the problem to |
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33 * the caller. |
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34 */ |
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35 |
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36 static void |
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37 out_of_core(void) |
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38 { |
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39 fputs("\nfatal: out of memory\n", stderr); |
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40 exit(2); |
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41 } |
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42 void * |
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43 xmalloc( size_t n ) |
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44 { |
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45 void *p = malloc( n ); |
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46 if( !p ) |
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47 out_of_core(); |
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48 return p; |
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49 } |
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50 |
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51 void * |
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52 xrealloc( void *a, size_t n ) |
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53 { |
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54 void *p = realloc( a, n ); |
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55 if( !p ) |
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56 out_of_core(); |
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57 return p; |
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58 } |
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59 |
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60 char * |
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61 xstrndup( const char *string, const size_t len ) |
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62 { |
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63 char *p = xmalloc( len + 1 ); |
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64 memcpy( p, string, len ); |
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65 p[len] = '\0'; |
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66 return p; |
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67 } |
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68 |
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69 unsigned int |
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70 strv_length (char **str_array) |
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71 { |
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72 unsigned int i = 0; |
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73 |
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74 if (!str_array) |
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75 return 0; |
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76 |
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77 while (str_array[i]) |
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78 ++i; |
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79 |
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80 return i; |
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81 } |
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82 |
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83 void strv_append (char ***pArray, const char *string, const size_t len) |
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84 { |
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85 unsigned int old_len = 0; |
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86 |
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87 if (!*pArray) |
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88 { |
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89 *pArray = xmalloc(2 * sizeof(char*)); |
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90 (*pArray)[0] = xstrndup(string, len); |
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91 (*pArray)[1] = NULL; |
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92 return; |
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93 } |
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94 old_len = strv_length(*pArray); |
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95 *pArray = xrealloc(*pArray, sizeof(char**) * (old_len + 2)); |
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96 |
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97 (*pArray)[old_len] = xstrndup(string, len); |
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98 (*pArray)[old_len + 1] = NULL; |
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99 } |
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100 |
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101 void |
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102 str_append_str(char **pDst, size_t *dst_len, const char *appendage, const size_t len) |
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103 { |
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104 if (!appendage) |
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105 return; |
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106 |
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107 if (!(*pDst)) |
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108 { |
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109 *pDst = xstrndup(appendage, len); |
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110 *dst_len = len; |
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111 } |
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112 else |
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113 { |
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114 size_t new_size = (*dst_len) + len + 1; |
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115 char *p_old = *pDst; |
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116 *pDst = xmalloc(new_size); |
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117 strncpy(*pDst, p_old, *dst_len); |
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118 strncpy(*pDst + *dst_len, appendage, len); |
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119 *dst_len = new_size - 1; |
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120 (*pDst)[*dst_len] = '\0'; |
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121 free (p_old); |
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122 } |
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123 } |
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124 |
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125 void |
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126 strv_free (char **str_array) |
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127 { |
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128 if (str_array) |
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129 { |
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130 int i; |
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131 |
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132 for (i = 0; str_array[i] != NULL; i++) |
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133 free (str_array[i]); |
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134 |
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135 free (str_array); |
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136 } |
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137 } |
131
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138 |
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139 bool |
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140 str_equal (char *s1, char *s2) |
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141 { |
143
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142 size_t l1 = strlen(s1); /* Flawfinder: ignore */ |
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143 size_t l2 = strlen(s2); /* Flawfinder: ignore */ |
131
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144 if ((l1 == l2) && |
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145 (strcmp(s1, s2) == 0)) |
131
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146 return true; |
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147 else |
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148 return false; |
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149 } |
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150 |
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151 bool |
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152 str_starts_with (char *s1, char *s2) |
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153 { |
143
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154 size_t l2 = strlen(s2); /* Flawfinder: ignore */ |
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155 if (strncmp(s1, s2, l2) == 0) |
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156 return true; |
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157 else |
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158 return false; |
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159 } |
133
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160 |
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161 void |
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162 str_trim (char **s) |
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163 { |
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164 size_t i; |
135
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165 if (*s != NULL) |
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166 { |
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167 while (isspace(**s)) |
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168 (*s)++; |
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169 i = strlen(*s); /* Flawfinder: ignore */ |
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170 while (isspace((*s)[--i])) |
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171 (*s)[i] = '\0'; |
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172 } |
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173 } |
160
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174 |
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175 int str_base64_decode(char **dst, size_t *dst_size, char *src, |
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176 size_t src_size) |
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177 { |
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178 int ret = -1; |
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179 |
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180 if (!dst || *dst) |
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181 { |
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182 return -1; |
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183 } |
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184 |
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185 /* Check the needed size for the buffer */ |
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186 ret = base64_decode(NULL, dst_size, |
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187 (unsigned char *)src, src_size); |
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188 |
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189 if (ret != 0 && ret != POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL) |
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190 { |
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191 return ret; |
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192 } |
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193 |
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194 *dst = xmalloc(*dst_size); |
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195 memset (*dst, 0, *dst_size); |
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196 |
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197 ret = base64_decode((unsigned char *)*dst, dst_size, |
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198 (unsigned char *)src, src_size); |
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199 if (ret) |
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200 { |
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201 free (*dst); |
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202 *dst = NULL; |
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203 *dst_size = 0; |
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204 } |
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205 return ret; |
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206 } |
251
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207 |
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208 void |
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209 xfree (void *p) |
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210 { |
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211 if (p) |
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212 free (p); |
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213 } |
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214 |
319
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215 int |
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216 xasprintf (char **strp, const char *fmt, ...) |
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217 { |
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218 int ret; |
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219 va_list ap; |
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220 va_start(ap, fmt); |
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221 ret = vasprintf(strp, fmt, ap); |
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222 va_end(ap); |
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223 |
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224 if (ret == -1) |
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225 out_of_core(); |
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226 |
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227 return ret; |
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228 } |
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229 |
251
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230 #ifdef WIN32 |
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231 /* Adapted from GPGOL rev. e512053 */ |
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232 char * |
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233 wchar_to_utf8 (const wchar_t *string, size_t len) |
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234 { |
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235 int n, ilen; |
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236 char *result; |
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237 |
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238 ilen = (int) len; |
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239 if (ilen < 0) |
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240 return NULL; |
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241 |
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242 /* Note, that CP_UTF8 is not defined in Windows versions earlier |
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243 than NT.*/ |
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244 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, NULL, 0, NULL, NULL); |
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245 if (n < 0) |
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246 return NULL; |
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247 |
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248 result = xmalloc ((size_t)n+1); |
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249 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, result, n, NULL, NULL); |
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250 if (n < 0) |
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251 { |
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252 xfree (result); |
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253 return NULL; |
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254 } |
288
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255 result[n] = 0; |
251
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256 return result; |
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257 } |
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258 |
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259 /* Adapted from GPGOL rev. e512053 */ |
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260 wchar_t * |
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261 utf8_to_wchar (const char *string, size_t len) |
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262 { |
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263 int n, ilen; |
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264 wchar_t *result; |
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265 |
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266 ilen = (int) len; |
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267 if (ilen < 0) |
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268 return NULL; |
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269 |
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270 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, NULL, 0); |
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271 if (n < 0 || n + 1 < 0) |
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272 return NULL; |
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273 |
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274 result = xmalloc ((size_t)(n+1) * sizeof *result); |
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275 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, result, n); |
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276 if (n < 0) |
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277 { |
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278 xfree (result); |
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279 return NULL; |
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280 } |
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281 result[n] = 0; |
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282 return result; |
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283 } |
1158
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284 |
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285 wchar_t |
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286 *acp_to_wchar (const char *string, size_t len) |
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287 { |
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288 int n, ilen; |
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289 wchar_t *result; |
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290 |
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291 ilen = (int) len; |
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292 if (ilen < 0) |
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293 return NULL; |
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294 |
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295 n = MultiByteToWideChar (CP_ACP, 0, string, ilen, NULL, 0); |
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296 if (n < 0 || n + 1 < 0) |
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297 return NULL; |
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298 |
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299 result = xmalloc ((size_t)(n+1) * sizeof *result); |
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300 n = MultiByteToWideChar (CP_ACP, 0, string, ilen, result, n); |
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301 if (n < 0) |
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302 { |
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303 xfree (result); |
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304 return NULL; |
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305 } |
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306 result[n] = 0; |
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307 return result; |
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308 } |
251
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309 #endif |