1 /* Handle list of needed message catalogs 2 Copyright (C) 1995, 1996, 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 34 void 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. */ 66 static 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. */ 72 struct loaded_l10nfile * 73 _nl_find_domain (dirname, locale, domainname) 74 const char *dirname; 75 char *locale; 76 const char *domainname; 77 { 78 struct loaded_l10nfile *retval; 79 const char *language; 80 const char *modifier; 81 const char *territory; 82 const char *codeset; 83 const char *normalized_codeset; 84 const char *special; 85 const char *sponsor; 86 const char *revision; 87 const char *alias_value; 88 int mask; 89 90 /* LOCALE can consist of up to four recognized parts for the XPG syntax: 91 92 language[_territory[.codeset]][@modifier] 93 94 and six parts for the CEN syntax: 95 96 language[_territory][+audience][+special][,[sponsor][_revision]] 97 98 Beside the first all of them are allowed to be missing. If the 99 full specified locale is not found, the less specific one are 100 looked for. The various part will be stripped of according to 101 the following order: 102 (1) revision 103 (2) sponsor 104 (3) special 105 (4) codeset 106 (5) normalized codeset 107 (6) territory 108 (7) audience/modifier 109 */ 110 111 /* If we have already tested for this locale entry there has to 112 be one data set in the list of loaded domains. */ 113 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, 114 strlen (dirname) + 1, 0, locale, NULL, NULL, 115 NULL, NULL, NULL, NULL, NULL, domainname, 0); 116 if (retval != NULL) 117 { 118 /* We know something about this locale. */ 119 int cnt; 120 121 if (retval->decided == 0) 122 _nl_load_domain (retval); 123 124 if (retval->data != NULL) 125 return retval; 126 127 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) 128 { 129 if (retval->successor[cnt]->decided == 0) 130 _nl_load_domain (retval->successor[cnt]); 131 132 if (retval->successor[cnt]->data != NULL) 133 break; 134 } 135 return cnt >= 0 ? retval : NULL; 136 /* NOTREACHED */ 137 } 138 139 /* See whether the locale value is an alias. If yes its value 140 *overwrites* the alias name. No test for the original value is 141 done. */ 142 alias_value = _nl_expand_alias (locale); 143 if (alias_value != NULL) 144 { 145 size_t len = strlen (alias_value) + 1; 146 locale = (char *) malloc (len); 147 if (locale == NULL) 148 return NULL; 149 150 memcpy (locale, alias_value, len); 151 } 152 153 /* Now we determine the single parts of the locale name. First 154 look for the language. Termination symbols are `_' and `@' if 155 we use XPG4 style, and `_', `+', and `,' if we use CEN syntax. */ 156 mask = _nl_explode_name (locale, &language, &modifier, &territory, 157 &codeset, &normalized_codeset, &special, 158 &sponsor, &revision); 159 160 /* Create all possible locale entries which might be interested in 161 generalization. */ 162 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, 163 strlen (dirname) + 1, mask, language, territory, 164 codeset, normalized_codeset, modifier, special, 165 sponsor, revision, domainname, 1); 166 if (retval == NULL) 167 /* This means we are out of core. */ 168 return NULL; 169 170 if (retval->decided == 0) 171 _nl_load_domain (retval); 172 if (retval->data == NULL) 173 { 174 int cnt; 175 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) 176 { 177 if (retval->successor[cnt]->decided == 0) 178 _nl_load_domain (retval->successor[cnt]); 179 if (retval->successor[cnt]->data != NULL) 180 break; 181 } 182 } 183 184 /* The room for an alias was dynamically allocated. Free it now. */ 185 if (alias_value != NULL) 186 free (locale); 187 188 return retval; 189 } 190