Mercurial > retraceit
annotate src/strhelp.c @ 44:73e6b6b12412
(issue 1,2) Make the column used for the Timestamp value configurable
If the column contains a number it is interpreted as seconds since
epoch. Otherwise its a verbatim copy of the column string.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Wed, 06 May 2015 19:45:26 +0200 |
parents | 64a51a42c01f |
children | 9daf778feaf1 |
rev | line source |
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1 /* Copyright (C) 2015 by ETH Zürich |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU GPL (v>=2) |
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5 * and comes with ABSOLUTELY NO WARRANTY! |
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6 * See LICENSE.txt for details. |
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7 */ |
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8 /* Needed to get asprintf */ |
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9 #define _GNU_SOURCE 1 |
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10 |
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11 /** @file See strhelp.h for documentation. */ |
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12 |
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13 #include <ctype.h> |
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14 #include <stdarg.h> |
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15 #include <stdbool.h> |
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16 #include <stdio.h> |
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17 #include <stdlib.h> |
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18 #include <string.h> |
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19 #include <assert.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 static void |
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26 out_of_core(void) |
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27 { |
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28 fputs("\nfatal: out of memory\n", stderr); |
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29 exit(2); |
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30 } |
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31 |
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32 void * |
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33 xmalloc( size_t n ) |
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34 { |
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35 void *p = malloc( n ); |
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36 if( !p ) |
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37 out_of_core(); |
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38 return p; |
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39 } |
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40 |
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41 void * |
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42 xmalloc0( size_t n ) |
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43 { |
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44 void *p = malloc( n ); |
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45 if( !p ) |
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46 out_of_core(); |
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47 memset (p, 0, n); |
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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 } |
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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 { |
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142 size_t l1 = strlen(s1); |
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143 size_t l2 = strlen(s2); |
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144 if ((l1 == l2) && |
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145 (strcmp(s1, s2) == 0)) |
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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 { |
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154 size_t l2 = strlen(s2); |
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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 } |
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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; |
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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); |
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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 } |
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174 |
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175 void |
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176 xfree (void *p) |
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177 { |
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178 if (p) |
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179 free (p); |
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180 } |
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181 |
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182 int |
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183 xasprintf (char **strp, const char *fmt, ...) |
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184 { |
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185 int ret; |
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186 va_list ap; |
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187 va_start(ap, fmt); |
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188 ret = vasprintf(strp, fmt, ap); |
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189 va_end(ap); |
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190 |
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191 if (ret == -1) |
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192 out_of_core(); |
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193 |
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194 return ret; |
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195 } |
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196 |
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197 #ifdef WIN32 |
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198 /* Adapted from GPGOL rev. e512053 */ |
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199 char * |
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200 wchar_to_utf8 (const wchar_t *string, size_t len) |
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201 { |
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202 int n, ilen; |
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203 char *result; |
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204 |
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205 ilen = (int) len; |
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206 if (ilen < 0) |
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207 return NULL; |
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208 |
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209 /* Note, that CP_UTF8 is not defined in Windows versions earlier |
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210 than NT.*/ |
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211 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, NULL, 0, NULL, NULL); |
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212 if (n < 0) |
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213 return NULL; |
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214 |
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215 result = xmalloc ((size_t)n+1); |
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216 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, result, n, NULL, NULL); |
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217 if (n < 0) |
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218 { |
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219 xfree (result); |
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220 return NULL; |
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221 } |
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222 result[n] = 0; |
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223 return result; |
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224 } |
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225 |
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226 /* Adapted from GPGOL rev. e512053 */ |
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227 wchar_t * |
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228 utf8_to_wchar (const char *string, size_t len) |
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229 { |
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230 int n, ilen; |
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231 wchar_t *result; |
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232 |
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233 ilen = (int) len; |
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234 if (ilen < 0) |
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235 return NULL; |
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236 |
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237 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, NULL, 0); |
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238 if (n < 0 || n + 1 < 0) |
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239 return NULL; |
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240 |
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241 result = xmalloc ((size_t)(n+1) * sizeof *result); |
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242 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, result, n); |
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243 if (n < 0) |
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244 { |
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245 xfree (result); |
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246 return NULL; |
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247 } |
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248 result[n] = 0; |
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249 return result; |
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250 } |
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251 |
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252 wchar_t |
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253 *acp_to_wchar (const char *string, size_t len) |
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254 { |
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255 int n, ilen; |
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256 wchar_t *result; |
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257 |
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258 ilen = (int) len; |
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259 if (ilen < 0) |
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260 return NULL; |
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261 |
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262 n = MultiByteToWideChar (CP_ACP, 0, string, ilen, NULL, 0); |
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263 if (n < 0 || n + 1 < 0) |
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264 return NULL; |
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265 |
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266 result = xmalloc ((size_t)(n+1) * sizeof *result); |
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267 n = MultiByteToWideChar (CP_ACP, 0, string, ilen, result, n); |
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268 if (n < 0) |
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269 { |
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270 xfree (result); |
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271 return NULL; |
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272 } |
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273 result[n] = 0; |
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274 return result; |
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275 } |
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276 #endif |
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277 |