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1 /* Handle list of needed message catalogs
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2 Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
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3 Written by Ulrich Drepper <drepper@gnu.org>, 1995.
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4
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5 This program is free software; you can redistribute it and/or modify it
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6 under the terms of the GNU Library General Public License as published
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7 by the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this program; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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18 USA. */
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19
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20 #ifdef HAVE_CONFIG_H
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21 # include <config.h>
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22 #endif
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23
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24 #include <stdio.h>
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25 #include <sys/types.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28
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29 #if defined HAVE_UNISTD_H || defined _LIBC
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30 # include <unistd.h>
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31 #endif
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32
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33 #include "gettextP.h"
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34 #ifdef _LIBC
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35 # include <libintl.h>
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36 #else
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37 # include "libgnuintl.h"
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38 #endif
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39
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40 /* @@ end of prolog @@ */
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41 /* List of already loaded domains. */
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42 static struct loaded_l10nfile *_nl_loaded_domains;
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43
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44
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45 /* Return a data structure describing the message catalog described by
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46 the DOMAINNAME and CATEGORY parameters with respect to the currently
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47 established bindings. */
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48 struct loaded_l10nfile *
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49 internal_function
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50 _nl_find_domain (dirname, locale, domainname, domainbinding)
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51 const char *dirname;
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52 char *locale;
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53 const char *domainname;
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54 struct binding *domainbinding;
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55 {
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56 struct loaded_l10nfile *retval;
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57 const char *language;
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58 const char *modifier;
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59 const char *territory;
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60 const char *codeset;
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61 const char *normalized_codeset;
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62 const char *special;
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63 const char *sponsor;
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64 const char *revision;
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65 const char *alias_value;
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66 int mask;
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67
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68 /* LOCALE can consist of up to four recognized parts for the XPG syntax:
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69
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70 language[_territory[.codeset]][@modifier]
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71
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72 and six parts for the CEN syntax:
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73
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74 language[_territory][+audience][+special][,[sponsor][_revision]]
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75
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76 Beside the first part all of them are allowed to be missing. If
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77 the full specified locale is not found, the less specific one are
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78 looked for. The various parts will be stripped off according to
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79 the following order:
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80 (1) revision
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81 (2) sponsor
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82 (3) special
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83 (4) codeset
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84 (5) normalized codeset
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85 (6) territory
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86 (7) audience/modifier
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87 */
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88
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89 /* If we have already tested for this locale entry there has to
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90 be one data set in the list of loaded domains. */
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91 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
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92 strlen (dirname) + 1, 0, locale, NULL, NULL,
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93 NULL, NULL, NULL, NULL, NULL, domainname, 0);
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94 if (retval != NULL)
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95 {
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96 /* We know something about this locale. */
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97 int cnt;
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98
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99 if (retval->decided == 0)
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100 _nl_load_domain (retval, domainbinding);
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101
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102 if (retval->data != NULL)
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103 return retval;
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104
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105 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
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106 {
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107 if (retval->successor[cnt]->decided == 0)
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108 _nl_load_domain (retval->successor[cnt], domainbinding);
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109
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110 if (retval->successor[cnt]->data != NULL)
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111 break;
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112 }
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113 return cnt >= 0 ? retval : NULL;
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114 /* NOTREACHED */
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115 }
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116
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117 /* See whether the locale value is an alias. If yes its value
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118 *overwrites* the alias name. No test for the original value is
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119 done. */
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120 alias_value = _nl_expand_alias (locale);
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121 if (alias_value != NULL)
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122 {
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123 #if defined _LIBC || defined HAVE_STRDUP
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124 locale = strdup (alias_value);
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125 if (locale == NULL)
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126 return NULL;
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127 #else
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128 size_t len = strlen (alias_value) + 1;
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129 locale = (char *) malloc (len);
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130 if (locale == NULL)
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131 return NULL;
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132
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133 memcpy (locale, alias_value, len);
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134 #endif
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135 }
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136
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137 /* Now we determine the single parts of the locale name. First
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138 look for the language. Termination symbols are `_' and `@' if
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139 we use XPG4 style, and `_', `+', and `,' if we use CEN syntax. */
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140 mask = _nl_explode_name (locale, &language, &modifier, &territory,
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141 &codeset, &normalized_codeset, &special,
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142 &sponsor, &revision);
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143
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144 /* Create all possible locale entries which might be interested in
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145 generalization. */
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146 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
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147 strlen (dirname) + 1, mask, language, territory,
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148 codeset, normalized_codeset, modifier, special,
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149 sponsor, revision, domainname, 1);
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150 if (retval == NULL)
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151 /* This means we are out of core. */
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152 return NULL;
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153
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154 if (retval->decided == 0)
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155 _nl_load_domain (retval, domainbinding);
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156 if (retval->data == NULL)
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157 {
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158 int cnt;
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159 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
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160 {
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161 if (retval->successor[cnt]->decided == 0)
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162 _nl_load_domain (retval->successor[cnt], domainbinding);
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163 if (retval->successor[cnt]->data != NULL)
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164 break;
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165 }
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166 }
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167
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168 /* The room for an alias was dynamically allocated. Free it now. */
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169 if (alias_value != NULL)
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170 free (locale);
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171
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172 /* The space for normalized_codeset is dynamically allocated. Free it. */
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173 if (mask & XPG_NORM_CODESET)
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174 free ((void *) normalized_codeset);
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175
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176 return retval;
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177 }
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178
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179
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180 #ifdef _LIBC
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181 libc_freeres_fn (free_mem)
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182 {
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183 struct loaded_l10nfile *runp = _nl_loaded_domains;
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184
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185 while (runp != NULL)
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186 {
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187 struct loaded_l10nfile *here = runp;
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188 if (runp->data != NULL)
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189 _nl_unload_domain ((struct loaded_domain *) runp->data);
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190 runp = runp->next;
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191 free ((char *) here->filename);
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192 free (here);
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193 }
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194 }
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195 #endif
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