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annotate src/strhelp.c @ 16:6d5dd3ae2ad3

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author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 14 Apr 2015 17:25:44 +0200
parents 147b08bc7d64
children 64a51a42c01f
rev   line source
0
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
1 /* Copyright (C) 2014 by Intevation GmbH
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2 *
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3 * This file is Free Software under the GNU GPL (v>=2)
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4 * and comes with ABSOLUTELY NO WARRANTY!
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5 * See LICENSE.txt for details.
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6 */
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7 /* Needed to get asprintf */
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8 #define _GNU_SOURCE 1
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9
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10 /** @file See strhelp.h for documentation. */
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11
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12 #include <ctype.h>
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13 #include <stdarg.h>
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14 #include <stdbool.h>
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15 #include <stdio.h>
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16 #include <stdlib.h>
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17 #include <string.h>
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18 #include <assert.h>
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19
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20 #ifdef WIN32
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21 #include <windows.h>
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22 #endif
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23
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24 static void
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25 out_of_core(void)
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26 {
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27 fputs("\nfatal: out of memory\n", stderr);
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28 exit(2);
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29 }
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30
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31 void *
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32 xmalloc( size_t n )
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33 {
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34 void *p = malloc( n );
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35 if( !p )
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36 out_of_core();
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37 return p;
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38 }
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39
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40 void *
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41 xmalloc0( size_t n )
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42 {
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43 void *p = malloc( n );
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44 if( !p )
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45 out_of_core();
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46 memset (p, 0, n);
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47 return p;
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48 }
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49
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50 void *
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51 xrealloc( void *a, size_t n )
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52 {
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53 void *p = realloc( a, n );
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54 if( !p )
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55 out_of_core();
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56 return p;
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57 }
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58
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59 char *
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60 xstrndup( const char *string, const size_t len )
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61 {
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62 char *p = xmalloc( len + 1 );
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63 memcpy( p, string, len );
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64 p[len] = '\0';
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65 return p;
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66 }
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67
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68 unsigned int
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69 strv_length (char **str_array)
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70 {
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71 unsigned int i = 0;
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72
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73 if (!str_array)
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74 return 0;
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75
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76 while (str_array[i])
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77 ++i;
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78
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79 return i;
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80 }
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81
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82 void strv_append (char ***pArray, const char *string, const size_t len)
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83 {
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84 unsigned int old_len = 0;
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85
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86 if (!*pArray)
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87 {
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88 *pArray = xmalloc(2 * sizeof(char*));
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89 (*pArray)[0] = xstrndup(string, len);
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90 (*pArray)[1] = NULL;
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91 return;
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92 }
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93 old_len = strv_length(*pArray);
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94 *pArray = xrealloc(*pArray, sizeof(char**) * (old_len + 2));
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95
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96 (*pArray)[old_len] = xstrndup(string, len);
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97 (*pArray)[old_len + 1] = NULL;
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98 }
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99
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100 void
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101 str_append_str(char **pDst, size_t *dst_len, const char *appendage, const size_t len)
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102 {
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103 if (!appendage)
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104 return;
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105
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106 if (!(*pDst))
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107 {
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108 *pDst = xstrndup(appendage, len);
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109 *dst_len = len;
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110 }
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111 else
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112 {
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113 size_t new_size = (*dst_len) + len + 1;
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114 char *p_old = *pDst;
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115 *pDst = xmalloc(new_size);
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116 strncpy(*pDst, p_old, *dst_len);
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117 strncpy(*pDst + *dst_len, appendage, len);
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118 *dst_len = new_size - 1;
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119 (*pDst)[*dst_len] = '\0';
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120 free (p_old);
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121 }
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122 }
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123
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124 void
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125 strv_free (char **str_array)
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126 {
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127 if (str_array)
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128 {
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129 int i;
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130
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131 for (i = 0; str_array[i] != NULL; i++)
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132 free (str_array[i]);
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133
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134 free (str_array);
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135 }
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136 }
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137
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138 bool
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139 str_equal (char *s1, char *s2)
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140 {
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141 size_t l1 = strlen(s1);
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142 size_t l2 = strlen(s2);
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143 if ((l1 == l2) &&
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144 (strcmp(s1, s2) == 0))
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145 return true;
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146 else
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147 return false;
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
148 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
149
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
150 bool
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
151 str_starts_with (char *s1, char *s2)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
152 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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153 size_t l2 = strlen(s2);
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
154 if (strncmp(s1, s2, l2) == 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
155 return true;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
156 else
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
157 return false;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
158 }
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
159
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
160 void
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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161 str_trim (char **s)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
162 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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163 size_t i;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
164 if (*s != NULL)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
165 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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166 while (isspace(**s))
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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167 (*s)++;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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168 i = strlen(*s);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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169 while (isspace((*s)[--i]))
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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170 (*s)[i] = '\0';
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
171 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
172 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
173
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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174 void
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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175 xfree (void *p)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
176 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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177 if (p)
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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178 free (p);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
179 }
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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180
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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181 int
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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182 xasprintf (char **strp, const char *fmt, ...)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
183 {
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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184 int ret;
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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185 va_list ap;
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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186 va_start(ap, fmt);
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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187 ret = vasprintf(strp, fmt, ap);
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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188 va_end(ap);
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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189
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
190 if (ret == -1)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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191 out_of_core();
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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192
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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193 return ret;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
194 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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195
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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196 #ifdef WIN32
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
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197 /* Adapted from GPGOL rev. e512053 */
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Andre Heinecke <andre.heinecke@intevation.de>
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198 char *
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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199 wchar_to_utf8 (const wchar_t *string, size_t len)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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200 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
201 int n, ilen;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
202 char *result;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
203
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
204 ilen = (int) len;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
205 if (ilen < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
206 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
207
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
208 /* Note, that CP_UTF8 is not defined in Windows versions earlier
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
209 than NT.*/
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
210 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, NULL, 0, NULL, NULL);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
211 if (n < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
212 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
213
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
214 result = xmalloc ((size_t)n+1);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
215 n = WideCharToMultiByte (CP_UTF8, 0, string, ilen, result, n, NULL, NULL);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
216 if (n < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
217 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
218 xfree (result);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
219 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
220 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
221 result[n] = 0;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
222 return result;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
223 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
224
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
225 /* Adapted from GPGOL rev. e512053 */
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
226 wchar_t *
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
227 utf8_to_wchar (const char *string, size_t len)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
228 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
229 int n, ilen;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
230 wchar_t *result;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
231
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
232 ilen = (int) len;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
233 if (ilen < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
234 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
235
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
236 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, NULL, 0);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
237 if (n < 0 || n + 1 < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
238 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
239
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
240 result = xmalloc ((size_t)(n+1) * sizeof *result);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
241 n = MultiByteToWideChar (CP_UTF8, 0, string, ilen, result, n);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
242 if (n < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
243 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
244 xfree (result);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
245 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
246 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
247 result[n] = 0;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
248 return result;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
249 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
250
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
251 wchar_t
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
252 *acp_to_wchar (const char *string, size_t len)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
253 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
254 int n, ilen;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
255 wchar_t *result;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
256
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
257 ilen = (int) len;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
258 if (ilen < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
259 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
260
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
261 n = MultiByteToWideChar (CP_ACP, 0, string, ilen, NULL, 0);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
262 if (n < 0 || n + 1 < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
263 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
264
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
265 result = xmalloc ((size_t)(n+1) * sizeof *result);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
266 n = MultiByteToWideChar (CP_ACP, 0, string, ilen, result, n);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
267 if (n < 0)
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
268 {
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
269 xfree (result);
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
270 return NULL;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
271 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
272 result[n] = 0;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
273 return result;
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
274 }
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
275 #endif
147b08bc7d64 Initial commit of a basic Application framework.
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
276
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