1/* Handle list of needed message catalogs 2 Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. 3 Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 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 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software Foundation, 17 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19#ifdef HAVE_CONFIG_H 20# include <config.h> 21#endif 22 23#include <ctype.h> 24#include <errno.h> 25#include <stdio.h> 26#include <sys/types.h> 27 28#if defined STDC_HEADERS || defined _LIBC 29# include <stdlib.h> 30#else 31# ifdef HAVE_MALLOC_H 32# include <malloc.h> 33# else 34void free (); 35# endif 36#endif 37 38#if defined HAVE_STRING_H || defined _LIBC 39# include <string.h> 40#else 41# include <strings.h> 42# ifndef memcpy 43# define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num) 44# endif 45#endif 46#if !HAVE_STRCHR && !defined _LIBC 47# ifndef strchr 48# define strchr index 49# endif 50#endif 51 52#if defined HAVE_UNISTD_H || defined _LIBC 53# include <unistd.h> 54#endif 55 56#include "gettext.h" 57#include "gettextP.h" 58#ifdef _LIBC 59# include <libintl.h> 60#else 61# include "libgettext.h" 62#endif 63 64/* @@ end of prolog @@ */ 65/* List of already loaded domains. */ 66static struct loaded_l10nfile *_nl_loaded_domains; 67 68 69/* Return a data structure describing the message catalog described by 70 the DOMAINNAME and CATEGORY parameters with respect to the currently 71 established bindings. */ 72struct loaded_l10nfile * 73internal_function 74_nl_find_domain (dirname, locale, domainname) 75 const char *dirname; 76 char *locale; 77 const char *domainname; 78{ 79 struct loaded_l10nfile *retval; 80 const char *language; 81 const char *modifier; 82 const char *territory; 83 const char *codeset; 84 const char *normalized_codeset; 85 const char *special; 86 const char *sponsor; 87 const char *revision; 88 const char *alias_value; 89 int mask; 90 91 /* LOCALE can consist of up to four recognized parts for the XPG syntax: 92 93 language[_territory[.codeset]][@modifier] 94 95 and six parts for the CEN syntax: 96 97 language[_territory][+audience][+special][,[sponsor][_revision]] 98 99 Beside the first part all of them are allowed to be missing. If 100 the full specified locale is not found, the less specific one are 101 looked for. The various parts will be stripped off according to 102 the following order: 103 (1) revision 104 (2) sponsor 105 (3) special 106 (4) codeset 107 (5) normalized codeset 108 (6) territory 109 (7) audience/modifier 110 */ 111 112 /* If we have already tested for this locale entry there has to 113 be one data set in the list of loaded domains. */ 114 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, 115 strlen (dirname) + 1, 0, locale, NULL, NULL, 116 NULL, NULL, NULL, NULL, NULL, domainname, 0); 117 if (retval != NULL) 118 { 119 /* We know something about this locale. */ 120 int cnt; 121 122 if (retval->decided == 0) 123 _nl_load_domain (retval); 124 125 if (retval->data != NULL) 126 return retval; 127 128 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) 129 { 130 if (retval->successor[cnt]->decided == 0) 131 _nl_load_domain (retval->successor[cnt]); 132 133 if (retval->successor[cnt]->data != NULL) 134 break; 135 } 136 return cnt >= 0 ? retval : NULL; 137 /* NOTREACHED */ 138 } 139 140 /* See whether the locale value is an alias. If yes its value 141 *overwrites* the alias name. No test for the original value is 142 done. */ 143 alias_value = _nl_expand_alias (locale); 144 if (alias_value != NULL) 145 { 146#if defined _LIBC || defined HAVE_STRDUP 147 locale = strdup (alias_value); 148 if (locale == NULL) 149 return NULL; 150#else 151 size_t len = strlen (alias_value) + 1; 152 locale = (char *) malloc (len); 153 if (locale == NULL) 154 return NULL; 155 156 memcpy (locale, alias_value, len); 157#endif 158 } 159 160 /* Now we determine the single parts of the locale name. First 161 look for the language. Termination symbols are `_' and `@' if 162 we use XPG4 style, and `_', `+', and `,' if we use CEN syntax. */ 163 mask = _nl_explode_name (locale, &language, &modifier, &territory, 164 &codeset, &normalized_codeset, &special, 165 &sponsor, &revision); 166 167 /* Create all possible locale entries which might be interested in 168 generalization. */ 169 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, 170 strlen (dirname) + 1, mask, language, territory, 171 codeset, normalized_codeset, modifier, special, 172 sponsor, revision, domainname, 1); 173 if (retval == NULL) 174 /* This means we are out of core. */ 175 return NULL; 176 177 if (retval->decided == 0) 178 _nl_load_domain (retval); 179 if (retval->data == NULL) 180 { 181 int cnt; 182 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) 183 { 184 if (retval->successor[cnt]->decided == 0) 185 _nl_load_domain (retval->successor[cnt]); 186 if (retval->successor[cnt]->data != NULL) 187 break; 188 } 189 } 190 191 /* The room for an alias was dynamically allocated. Free it now. */ 192 if (alias_value != NULL) 193 free (locale); 194 195 return retval; 196} 197 198 199#ifdef _LIBC 200static void __attribute__ ((unused)) 201free_mem (void) 202{ 203 struct loaded_l10nfile *runp = _nl_loaded_domains; 204 205 while (runp != NULL) 206 { 207 struct loaded_l10nfile *here = runp; 208 if (runp->data != NULL) 209 _nl_unload_domain ((struct loaded_domain *) runp->data); 210 runp = runp->next; 211 free (here); 212 } 213} 214 215text_set_element (__libc_subfreeres, free_mem); 216#endif 217