1 /* Handle list of needed message catalogs 2 Copyright (C) 1995-1999, 2000-2001, 2003-2006 Free Software Foundation, Inc. 3 Written by Ulrich Drepper <drepper@gnu.org>, 1995. 4 5 This program is free software; you can redistribute it and/or modify it 6 under the terms of the GNU Library General Public License as published 7 by the Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Library General Public License for more details. 14 15 You should have received a copy of the GNU Library General Public 16 License along with this program; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 18 USA. */ 19 20 #ifdef HAVE_CONFIG_H 21 # include <config.h> 22 #endif 23 24 #include <stdio.h> 25 #include <sys/types.h> 26 #include <stdlib.h> 27 #include <string.h> 28 29 #if defined HAVE_UNISTD_H || defined _LIBC 30 # include <unistd.h> 31 #endif 32 33 #include "gettextP.h" 34 #ifdef _LIBC 35 # include <libintl.h> 36 #else 37 # include "libgnuintl.h" 38 #endif 39 40 /* Handle multi-threaded applications. */ 41 #ifdef _LIBC 42 # include <bits/libc-lock.h> 43 # define gl_rwlock_define_initialized __libc_rwlock_define_initialized 44 # define gl_rwlock_rdlock __libc_rwlock_rdlock 45 # define gl_rwlock_wrlock __libc_rwlock_wrlock 46 # define gl_rwlock_unlock __libc_rwlock_unlock 47 #else 48 # include "lock.h" 49 #endif 50 51 /* @@ end of prolog @@ */ 52 /* List of already loaded domains. */ 53 static struct loaded_l10nfile *_nl_loaded_domains; 54 55 56 /* Return a data structure describing the message catalog described by 57 the DOMAINNAME and CATEGORY parameters with respect to the currently 58 established bindings. */ 59 struct loaded_l10nfile * 60 internal_function 61 _nl_find_domain (const char *dirname, char *locale, 62 const char *domainname, struct binding *domainbinding) 63 { 64 struct loaded_l10nfile *retval; 65 const char *language; 66 const char *modifier; 67 const char *territory; 68 const char *codeset; 69 const char *normalized_codeset; 70 const char *alias_value; 71 int mask; 72 73 /* LOCALE can consist of up to four recognized parts for the XPG syntax: 74 75 language[_territory][.codeset][@modifier] 76 77 Beside the first part all of them are allowed to be missing. If 78 the full specified locale is not found, the less specific one are 79 looked for. The various parts will be stripped off according to 80 the following order: 81 (1) codeset 82 (2) normalized codeset 83 (3) territory 84 (4) modifier 85 */ 86 87 /* We need to protect modifying the _NL_LOADED_DOMAINS data. */ 88 gl_rwlock_define_initialized (static, lock); 89 gl_rwlock_rdlock (lock); 90 91 /* If we have already tested for this locale entry there has to 92 be one data set in the list of loaded domains. */ 93 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, 94 strlen (dirname) + 1, 0, locale, NULL, NULL, 95 NULL, NULL, domainname, 0); 96 97 gl_rwlock_unlock (lock); 98 99 if (retval != NULL) 100 { 101 /* We know something about this locale. */ 102 int cnt; 103 104 if (retval->decided <= 0) 105 _nl_load_domain (retval, domainbinding); 106 107 if (retval->data != NULL) 108 return retval; 109 110 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) 111 { 112 if (retval->successor[cnt]->decided <= 0) 113 _nl_load_domain (retval->successor[cnt], domainbinding); 114 115 if (retval->successor[cnt]->data != NULL) 116 break; 117 } 118 119 return retval; 120 /* NOTREACHED */ 121 } 122 123 /* See whether the locale value is an alias. If yes its value 124 *overwrites* the alias name. No test for the original value is 125 done. */ 126 alias_value = _nl_expand_alias (locale); 127 if (alias_value != NULL) 128 { 129 #if defined _LIBC || defined HAVE_STRDUP 130 locale = strdup (alias_value); 131 if (locale == NULL) 132 return NULL; 133 #else 134 size_t len = strlen (alias_value) + 1; 135 locale = (char *) malloc (len); 136 if (locale == NULL) 137 return NULL; 138 139 memcpy (locale, alias_value, len); 140 #endif 141 } 142 143 /* Now we determine the single parts of the locale name. First 144 look for the language. Termination symbols are `_', '.', and `@'. */ 145 mask = _nl_explode_name (locale, &language, &modifier, &territory, 146 &codeset, &normalized_codeset); 147 148 /* We need to protect modifying the _NL_LOADED_DOMAINS data. */ 149 gl_rwlock_wrlock (lock); 150 151 /* Create all possible locale entries which might be interested in 152 generalization. */ 153 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, 154 strlen (dirname) + 1, mask, language, territory, 155 codeset, normalized_codeset, modifier, 156 domainname, 1); 157 158 gl_rwlock_unlock (lock); 159 160 if (retval == NULL) 161 /* This means we are out of core. */ 162 return NULL; 163 164 if (retval->decided <= 0) 165 _nl_load_domain (retval, domainbinding); 166 if (retval->data == NULL) 167 { 168 int cnt; 169 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) 170 { 171 if (retval->successor[cnt]->decided <= 0) 172 _nl_load_domain (retval->successor[cnt], domainbinding); 173 if (retval->successor[cnt]->data != NULL) 174 break; 175 } 176 } 177 178 /* The room for an alias was dynamically allocated. Free it now. */ 179 if (alias_value != NULL) 180 free (locale); 181 182 /* The space for normalized_codeset is dynamically allocated. Free it. */ 183 if (mask & XPG_NORM_CODESET) 184 free ((void *) normalized_codeset); 185 186 return retval; 187 } 188 189 190 #ifdef _LIBC 191 /* This is called from iconv/gconv_db.c's free_mem, as locales must 192 be freed before freeing gconv steps arrays. */ 193 void __libc_freeres_fn_section 194 _nl_finddomain_subfreeres () 195 { 196 struct loaded_l10nfile *runp = _nl_loaded_domains; 197 198 while (runp != NULL) 199 { 200 struct loaded_l10nfile *here = runp; 201 if (runp->data != NULL) 202 _nl_unload_domain ((struct loaded_domain *) runp->data); 203 runp = runp->next; 204 free ((char *) here->filename); 205 free (here); 206 } 207 } 208 #endif 209