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8f2ece69 | 1 | /* Implementation of the bindtextdomain(3) function |
9cfe5381 | 2 | Copyright (C) 1995-1998, 2000, 2001, 2002, 2005 Free Software Foundation, Inc. |
41bdb6e2 | 3 | This file is part of the GNU C Library. |
24906b43 | 4 | |
c84142e8 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
0393dfd6 | 9 | |
c84142e8 UD |
10 | The GNU C Library 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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
24906b43 | 14 | |
41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
24906b43 RM |
19 | |
20 | #ifdef HAVE_CONFIG_H | |
21 | # include <config.h> | |
22 | #endif | |
23 | ||
0555fcce UD |
24 | #include <stddef.h> |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
24906b43 RM |
27 | |
28 | #ifdef _LIBC | |
29 | # include <libintl.h> | |
30 | #else | |
4a4d50f3 | 31 | # include "libgnuintl.h" |
24906b43 | 32 | #endif |
24906b43 RM |
33 | #include "gettextP.h" |
34 | ||
0ed99ce4 UD |
35 | #ifdef _LIBC |
36 | /* We have to handle multi-threaded applications. */ | |
37 | # include <bits/libc-lock.h> | |
38 | #else | |
39 | /* Provide dummy implementation if this is outside glibc. */ | |
0a55a284 UD |
40 | # define __libc_rwlock_define(CLASS, NAME) |
41 | # define __libc_rwlock_wrlock(NAME) | |
42 | # define __libc_rwlock_unlock(NAME) | |
0ed99ce4 UD |
43 | #endif |
44 | ||
52d895a4 UD |
45 | /* The internal variables in the standalone libintl.a must have different |
46 | names than the internal variables in GNU libc, otherwise programs | |
47 | using libintl.a cannot be linked statically. */ | |
48 | #if !defined _LIBC | |
0f131646 RM |
49 | # define _nl_default_dirname libintl_nl_default_dirname |
50 | # define _nl_domain_bindings libintl_nl_domain_bindings | |
52d895a4 UD |
51 | #endif |
52 | ||
4a4d50f3 UD |
53 | /* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */ |
54 | #ifndef offsetof | |
55 | # define offsetof(type,ident) ((size_t)&(((type*)0)->ident)) | |
56 | #endif | |
57 | ||
24906b43 RM |
58 | /* @@ end of prolog @@ */ |
59 | ||
60 | /* Contains the default location of the message catalogs. */ | |
61 | extern const char _nl_default_dirname[]; | |
230491f0 | 62 | #ifdef _LIBC |
9cfe5381 | 63 | libc_hidden_proto (_nl_default_dirname) |
230491f0 | 64 | #endif |
24906b43 RM |
65 | |
66 | /* List with bindings of specific domains. */ | |
67 | extern struct binding *_nl_domain_bindings; | |
68 | ||
0ed99ce4 | 69 | /* Lock variable to protect the global data in the gettext implementation. */ |
418f1701 | 70 | __libc_rwlock_define (extern, _nl_state_lock attribute_hidden) |
0ed99ce4 | 71 | |
24906b43 RM |
72 | |
73 | /* Names for the libintl functions are a problem. They must not clash | |
74 | with existing names and they should follow ANSI C. But this source | |
75 | code is also used in GNU C Library where the names have a __ | |
76 | prefix. So we have to make a difference here. */ | |
77 | #ifdef _LIBC | |
78 | # define BINDTEXTDOMAIN __bindtextdomain | |
17c389fc | 79 | # define BIND_TEXTDOMAIN_CODESET __bind_textdomain_codeset |
cb343854 UD |
80 | # ifndef strdup |
81 | # define strdup(str) __strdup (str) | |
82 | # endif | |
24906b43 | 83 | #else |
0f131646 RM |
84 | # define BINDTEXTDOMAIN libintl_bindtextdomain |
85 | # define BIND_TEXTDOMAIN_CODESET libintl_bind_textdomain_codeset | |
24906b43 RM |
86 | #endif |
87 | ||
fbd61fc1 | 88 | /* Prototypes for local functions. */ |
4a4d50f3 UD |
89 | static void set_binding_values PARAMS ((const char *domainname, |
90 | const char **dirnamep, | |
91 | const char **codesetp)); | |
c44a663d | 92 | |
17c389fc UD |
93 | /* Specifies the directory name *DIRNAMEP and the output codeset *CODESETP |
94 | to be used for the DOMAINNAME message catalog. | |
95 | If *DIRNAMEP or *CODESETP is NULL, the corresponding attribute is not | |
96 | modified, only the current value is returned. | |
97 | If DIRNAMEP or CODESETP is NULL, the corresponding attribute is neither | |
98 | modified nor returned. */ | |
99 | static void | |
100 | set_binding_values (domainname, dirnamep, codesetp) | |
24906b43 | 101 | const char *domainname; |
17c389fc UD |
102 | const char **dirnamep; |
103 | const char **codesetp; | |
24906b43 RM |
104 | { |
105 | struct binding *binding; | |
17c389fc | 106 | int modified; |
24906b43 RM |
107 | |
108 | /* Some sanity checks. */ | |
109 | if (domainname == NULL || domainname[0] == '\0') | |
17c389fc UD |
110 | { |
111 | if (dirnamep) | |
112 | *dirnamep = NULL; | |
113 | if (codesetp) | |
114 | *codesetp = NULL; | |
115 | return; | |
116 | } | |
24906b43 | 117 | |
0ed99ce4 UD |
118 | __libc_rwlock_wrlock (_nl_state_lock); |
119 | ||
17c389fc UD |
120 | modified = 0; |
121 | ||
24906b43 RM |
122 | for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) |
123 | { | |
124 | int compare = strcmp (domainname, binding->domainname); | |
125 | if (compare == 0) | |
126 | /* We found it! */ | |
127 | break; | |
128 | if (compare < 0) | |
129 | { | |
130 | /* It is not in the list. */ | |
131 | binding = NULL; | |
132 | break; | |
133 | } | |
134 | } | |
135 | ||
17c389fc | 136 | if (binding != NULL) |
24906b43 | 137 | { |
17c389fc | 138 | if (dirnamep) |
24906b43 | 139 | { |
17c389fc UD |
140 | const char *dirname = *dirnamep; |
141 | ||
142 | if (dirname == NULL) | |
143 | /* The current binding has be to returned. */ | |
144 | *dirnamep = binding->dirname; | |
40a55d20 UD |
145 | else |
146 | { | |
17c389fc UD |
147 | /* The domain is already bound. If the new value and the old |
148 | one are equal we simply do nothing. Otherwise replace the | |
149 | old binding. */ | |
150 | char *result = binding->dirname; | |
151 | if (strcmp (dirname, result) != 0) | |
152 | { | |
9cfe5381 RM |
153 | if (strcmp (dirname, _nl_default_dirname) == 0) |
154 | result = (char *) _nl_default_dirname; | |
17c389fc UD |
155 | else |
156 | { | |
40a55d20 | 157 | #if defined _LIBC || defined HAVE_STRDUP |
17c389fc | 158 | result = strdup (dirname); |
40a55d20 | 159 | #else |
17c389fc UD |
160 | size_t len = strlen (dirname) + 1; |
161 | result = (char *) malloc (len); | |
162 | if (__builtin_expect (result != NULL, 1)) | |
163 | memcpy (result, dirname, len); | |
40a55d20 | 164 | #endif |
17c389fc UD |
165 | } |
166 | ||
167 | if (__builtin_expect (result != NULL, 1)) | |
168 | { | |
9cfe5381 | 169 | if (binding->dirname != _nl_default_dirname) |
17c389fc UD |
170 | free (binding->dirname); |
171 | ||
172 | binding->dirname = result; | |
173 | modified = 1; | |
174 | } | |
175 | } | |
176 | *dirnamep = result; | |
40a55d20 | 177 | } |
17c389fc UD |
178 | } |
179 | ||
180 | if (codesetp) | |
181 | { | |
182 | const char *codeset = *codesetp; | |
24906b43 | 183 | |
17c389fc UD |
184 | if (codeset == NULL) |
185 | /* The current binding has be to returned. */ | |
186 | *codesetp = binding->codeset; | |
187 | else | |
0ed99ce4 | 188 | { |
17c389fc UD |
189 | /* The domain is already bound. If the new value and the old |
190 | one are equal we simply do nothing. Otherwise replace the | |
191 | old binding. */ | |
192 | char *result = binding->codeset; | |
193 | if (result == NULL || strcmp (codeset, result) != 0) | |
194 | { | |
195 | #if defined _LIBC || defined HAVE_STRDUP | |
196 | result = strdup (codeset); | |
197 | #else | |
198 | size_t len = strlen (codeset) + 1; | |
199 | result = (char *) malloc (len); | |
200 | if (__builtin_expect (result != NULL, 1)) | |
201 | memcpy (result, codeset, len); | |
202 | #endif | |
24906b43 | 203 | |
17c389fc UD |
204 | if (__builtin_expect (result != NULL, 1)) |
205 | { | |
72e6cdfa | 206 | free (binding->codeset); |
17c389fc UD |
207 | |
208 | binding->codeset = result; | |
209 | modified = 1; | |
210 | } | |
211 | } | |
212 | *codesetp = result; | |
0ed99ce4 | 213 | } |
40a55d20 | 214 | } |
24906b43 | 215 | } |
17c389fc UD |
216 | else if ((dirnamep == NULL || *dirnamep == NULL) |
217 | && (codesetp == NULL || *codesetp == NULL)) | |
218 | { | |
219 | /* Simply return the default values. */ | |
220 | if (dirnamep) | |
9cfe5381 | 221 | *dirnamep = _nl_default_dirname; |
17c389fc UD |
222 | if (codesetp) |
223 | *codesetp = NULL; | |
224 | } | |
24906b43 RM |
225 | else |
226 | { | |
227 | /* We have to create a new binding. */ | |
0ed99ce4 | 228 | size_t len = strlen (domainname) + 1; |
24906b43 | 229 | struct binding *new_binding = |
4a4d50f3 | 230 | (struct binding *) malloc (offsetof (struct binding, domainname) + len); |
24906b43 | 231 | |
17c389fc UD |
232 | if (__builtin_expect (new_binding == NULL, 0)) |
233 | goto failed; | |
234 | ||
235 | memcpy (new_binding->domainname, domainname, len); | |
236 | ||
237 | if (dirnamep) | |
24906b43 | 238 | { |
17c389fc | 239 | const char *dirname = *dirnamep; |
0ed99ce4 | 240 | |
17c389fc UD |
241 | if (dirname == NULL) |
242 | /* The default value. */ | |
9cfe5381 | 243 | dirname = _nl_default_dirname; |
0ed99ce4 UD |
244 | else |
245 | { | |
9cfe5381 RM |
246 | if (strcmp (dirname, _nl_default_dirname) == 0) |
247 | dirname = _nl_default_dirname; | |
17c389fc UD |
248 | else |
249 | { | |
250 | char *result; | |
40a55d20 | 251 | #if defined _LIBC || defined HAVE_STRDUP |
17c389fc UD |
252 | result = strdup (dirname); |
253 | if (__builtin_expect (result == NULL, 0)) | |
254 | goto failed_dirname; | |
40a55d20 | 255 | #else |
17c389fc UD |
256 | size_t len = strlen (dirname) + 1; |
257 | result = (char *) malloc (len); | |
258 | if (__builtin_expect (result == NULL, 0)) | |
259 | goto failed_dirname; | |
260 | memcpy (result, dirname, len); | |
40a55d20 | 261 | #endif |
17c389fc UD |
262 | dirname = result; |
263 | } | |
0ed99ce4 | 264 | } |
17c389fc UD |
265 | *dirnamep = dirname; |
266 | new_binding->dirname = (char *) dirname; | |
24906b43 | 267 | } |
17c389fc UD |
268 | else |
269 | /* The default value. */ | |
9cfe5381 | 270 | new_binding->dirname = (char *) _nl_default_dirname; |
a334319f | 271 | |
17c389fc | 272 | if (codesetp) |
24906b43 | 273 | { |
17c389fc UD |
274 | const char *codeset = *codesetp; |
275 | ||
276 | if (codeset != NULL) | |
0ed99ce4 | 277 | { |
17c389fc | 278 | char *result; |
24906b43 | 279 | |
17c389fc UD |
280 | #if defined _LIBC || defined HAVE_STRDUP |
281 | result = strdup (codeset); | |
282 | if (__builtin_expect (result == NULL, 0)) | |
283 | goto failed_codeset; | |
284 | #else | |
285 | size_t len = strlen (codeset) + 1; | |
286 | result = (char *) malloc (len); | |
287 | if (__builtin_expect (result == NULL, 0)) | |
288 | goto failed_codeset; | |
289 | memcpy (result, codeset, len); | |
290 | #endif | |
291 | codeset = result; | |
0ed99ce4 | 292 | } |
17c389fc UD |
293 | *codesetp = codeset; |
294 | new_binding->codeset = (char *) codeset; | |
295 | } | |
296 | else | |
297 | new_binding->codeset = NULL; | |
298 | ||
299 | /* Now enqueue it. */ | |
300 | if (_nl_domain_bindings == NULL | |
301 | || strcmp (domainname, _nl_domain_bindings->domainname) < 0) | |
302 | { | |
303 | new_binding->next = _nl_domain_bindings; | |
304 | _nl_domain_bindings = new_binding; | |
305 | } | |
306 | else | |
307 | { | |
308 | binding = _nl_domain_bindings; | |
309 | while (binding->next != NULL | |
310 | && strcmp (domainname, binding->next->domainname) > 0) | |
311 | binding = binding->next; | |
312 | ||
313 | new_binding->next = binding->next; | |
314 | binding->next = new_binding; | |
315 | } | |
316 | ||
317 | modified = 1; | |
318 | ||
319 | /* Here we deal with memory allocation failures. */ | |
320 | if (0) | |
321 | { | |
322 | failed_codeset: | |
9cfe5381 | 323 | if (new_binding->dirname != _nl_default_dirname) |
17c389fc UD |
324 | free (new_binding->dirname); |
325 | failed_dirname: | |
326 | free (new_binding); | |
327 | failed: | |
328 | if (dirnamep) | |
329 | *dirnamep = NULL; | |
330 | if (codesetp) | |
331 | *codesetp = NULL; | |
24906b43 | 332 | } |
24906b43 RM |
333 | } |
334 | ||
17c389fc UD |
335 | /* If we modified any binding, we flush the caches. */ |
336 | if (modified) | |
0ed99ce4 UD |
337 | ++_nl_msg_cat_cntr; |
338 | ||
339 | __libc_rwlock_unlock (_nl_state_lock); | |
17c389fc UD |
340 | } |
341 | ||
342 | /* Specify that the DOMAINNAME message catalog will be found | |
343 | in DIRNAME rather than in the system locale data base. */ | |
344 | char * | |
345 | BINDTEXTDOMAIN (domainname, dirname) | |
346 | const char *domainname; | |
347 | const char *dirname; | |
348 | { | |
349 | set_binding_values (domainname, &dirname, NULL); | |
350 | return (char *) dirname; | |
351 | } | |
0ed99ce4 | 352 | |
17c389fc UD |
353 | /* Specify the character encoding in which the messages from the |
354 | DOMAINNAME message catalog will be returned. */ | |
355 | char * | |
356 | BIND_TEXTDOMAIN_CODESET (domainname, codeset) | |
357 | const char *domainname; | |
358 | const char *codeset; | |
359 | { | |
360 | set_binding_values (domainname, NULL, &codeset); | |
361 | return (char *) codeset; | |
24906b43 RM |
362 | } |
363 | ||
364 | #ifdef _LIBC | |
17c389fc | 365 | /* Aliases for function names in GNU C Library. */ |
24906b43 | 366 | weak_alias (__bindtextdomain, bindtextdomain); |
17c389fc | 367 | weak_alias (__bind_textdomain_codeset, bind_textdomain_codeset); |
24906b43 | 368 | #endif |