1 /* Handle list of needed message catalogs
2 Copyright (C) 1995-1999, 2000, 2001 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 /* @@ end of prolog @@ */
41 /* List of already loaded domains. */
42 static struct loaded_l10nfile *_nl_loaded_domains;
43
44
45 /* Return a data structure describing the message catalog described by
46 the DOMAINNAME and CATEGORY parameters with respect to the currently
47 established bindings. */
48 struct loaded_l10nfile *
49 internal_function
50 _nl_find_domain (dirname, locale, domainname, domainbinding)
51 const char *dirname;
52 char *locale;
53 const char *domainname;
54 struct binding *domainbinding;
55 {
56 struct loaded_l10nfile *retval;
57 const char *language;
58 const char *modifier;
59 const char *territory;
60 const char *codeset;
61 const char *normalized_codeset;
62 const char *special;
63 const char *sponsor;
64 const char *revision;
65 const char *alias_value;
66 int mask;
67
68 /* LOCALE can consist of up to four recognized parts for the XPG syntax:
69
70 language[_territory[.codeset]][@modifier]
71
72 and six parts for the CEN syntax:
73
74 language[_territory][+audience][+special][,[sponsor][_revision]]
75
76 Beside the first part all of them are allowed to be missing. If
77 the full specified locale is not found, the less specific one are
78 looked for. The various parts will be stripped off according to
79 the following order:
80 (1) revision
81 (2) sponsor
82 (3) special
83 (4) codeset
84 (5) normalized codeset
85 (6) territory
86 (7) audience/modifier
87 */
88
89 /* If we have already tested for this locale entry there has to
90 be one data set in the list of loaded domains. */
91 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
92 strlen (dirname) + 1, 0, locale, NULL, NULL,
93 NULL, NULL, NULL, NULL, NULL, domainname, 0);
94 if (retval != NULL)
95 {
96 /* We know something about this locale. */
97 int cnt;
98
99 if (retval->decided == 0)
100 _nl_load_domain (retval, domainbinding);
101
102 if (retval->data != NULL)
103 return retval;
104
105 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
106 {
107 if (retval->successor[cnt]->decided == 0)
108 _nl_load_domain (retval->successor[cnt], domainbinding);
109
110 if (retval->successor[cnt]->data != NULL)
111 break;
112 }
113 return cnt >= 0 ? retval : NULL;
114 /* NOTREACHED */
115 }
116
117 /* See whether the locale value is an alias. If yes its value
118 *overwrites* the alias name. No test for the original value is
119 done. */
120 alias_value = _nl_expand_alias (locale);
121 if (alias_value != NULL)
122 {
123 #if defined _LIBC || defined HAVE_STRDUP
124 locale = strdup (alias_value);
125 if (locale == NULL)
126 return NULL;
127 #else
128 size_t len = strlen (alias_value) + 1;
129 locale = (char *) malloc (len);
130 if (locale == NULL)
131 return NULL;
132
133 memcpy (locale, alias_value, len);
134 #endif
135 }
136
137 /* Now we determine the single parts of the locale name. First
138 look for the language. Termination symbols are `_' and `@' if
139 we use XPG4 style, and `_', `+', and `,' if we use CEN syntax. */
140 mask = _nl_explode_name (locale, &language, &modifier, &territory,
141 &codeset, &normalized_codeset, &special,
142 &sponsor, &revision);
143
144 /* Create all possible locale entries which might be interested in
145 generalization. */
146 retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
147 strlen (dirname) + 1, mask, language, territory,
148 codeset, normalized_codeset, modifier, special,
149 sponsor, revision, domainname, 1);
150 if (retval == NULL)
151 /* This means we are out of core. */
152 return NULL;
153
154 if (retval->decided == 0)
155 _nl_load_domain (retval, domainbinding);
156 if (retval->data == NULL)
157 {
158 int cnt;
159 for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
160 {
161 if (retval->successor[cnt]->decided == 0)
162 _nl_load_domain (retval->successor[cnt], domainbinding);
163 if (retval->successor[cnt]->data != NULL)
164 break;
165 }
166 }
167
168 /* The room for an alias was dynamically allocated. Free it now. */
169 if (alias_value != NULL)
170 free (locale);
171
172 /* The space for normalized_codeset is dynamically allocated. Free it. */
173 if (mask & XPG_NORM_CODESET)
174 free ((void *) normalized_codeset);
175
176 return retval;
177 }
178
179
180 #ifdef _LIBC
181 libc_freeres_fn (free_mem)
182 {
183 struct loaded_l10nfile *runp = _nl_loaded_domains;
184
185 while (runp != NULL)
186 {
187 struct loaded_l10nfile *here = runp;
188 if (runp->data != NULL)
189 _nl_unload_domain ((struct loaded_domain *) runp->data);
190 runp = runp->next;
191 free ((char *) here->filename);
192 free (here);
193 }
194 }
195 #endif