Theodore Ts'o | 5bc5a89 | 2000-02-08 20:20:46 +0000 | [diff] [blame] | 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., 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 | internal_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 |
| 200 | static void __attribute__ ((unused)) |
| 201 | free_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 | |
| 215 | text_set_element (__libc_subfreeres, free_mem); |
| 216 | #endif |