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7421c9f1 TT |
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 | } |