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8f2ece69 | 1 | /* Implementation of the bindtextdomain(3) function |
a334319f | 2 | Copyright (C) 1995-1998, 2000, 2001, 2002 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 |
a334319f UD |
63 | extern const char _nl_default_dirname_internal[] attribute_hidden; |
64 | #else | |
65 | # define INTUSE(name) name | |
230491f0 | 66 | #endif |
24906b43 RM |
67 | |
68 | /* List with bindings of specific domains. */ | |
69 | extern struct binding *_nl_domain_bindings; | |
70 | ||
0ed99ce4 | 71 | /* Lock variable to protect the global data in the gettext implementation. */ |
418f1701 | 72 | __libc_rwlock_define (extern, _nl_state_lock attribute_hidden) |
0ed99ce4 | 73 | |
24906b43 RM |
74 | |
75 | /* Names for the libintl functions are a problem. They must not clash | |
76 | with existing names and they should follow ANSI C. But this source | |
77 | code is also used in GNU C Library where the names have a __ | |
78 | prefix. So we have to make a difference here. */ | |
79 | #ifdef _LIBC | |
80 | # define BINDTEXTDOMAIN __bindtextdomain | |
17c389fc | 81 | # define BIND_TEXTDOMAIN_CODESET __bind_textdomain_codeset |
cb343854 UD |
82 | # ifndef strdup |
83 | # define strdup(str) __strdup (str) | |
84 | # endif | |
24906b43 | 85 | #else |
0f131646 RM |
86 | # define BINDTEXTDOMAIN libintl_bindtextdomain |
87 | # define BIND_TEXTDOMAIN_CODESET libintl_bind_textdomain_codeset | |
24906b43 RM |
88 | #endif |
89 | ||
fbd61fc1 | 90 | /* Prototypes for local functions. */ |
4a4d50f3 UD |
91 | static void set_binding_values PARAMS ((const char *domainname, |
92 | const char **dirnamep, | |
93 | const char **codesetp)); | |
c44a663d | 94 | |
17c389fc UD |
95 | /* Specifies the directory name *DIRNAMEP and the output codeset *CODESETP |
96 | to be used for the DOMAINNAME message catalog. | |
97 | If *DIRNAMEP or *CODESETP is NULL, the corresponding attribute is not | |
98 | modified, only the current value is returned. | |
99 | If DIRNAMEP or CODESETP is NULL, the corresponding attribute is neither | |
100 | modified nor returned. */ | |
101 | static void | |
102 | set_binding_values (domainname, dirnamep, codesetp) | |
24906b43 | 103 | const char *domainname; |
17c389fc UD |
104 | const char **dirnamep; |
105 | const char **codesetp; | |
24906b43 RM |
106 | { |
107 | struct binding *binding; | |
17c389fc | 108 | int modified; |
24906b43 RM |
109 | |
110 | /* Some sanity checks. */ | |
111 | if (domainname == NULL || domainname[0] == '\0') | |
17c389fc UD |
112 | { |
113 | if (dirnamep) | |
114 | *dirnamep = NULL; | |
115 | if (codesetp) | |
116 | *codesetp = NULL; | |
117 | return; | |
118 | } | |
24906b43 | 119 | |
0ed99ce4 UD |
120 | __libc_rwlock_wrlock (_nl_state_lock); |
121 | ||
17c389fc UD |
122 | modified = 0; |
123 | ||
24906b43 RM |
124 | for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) |
125 | { | |
126 | int compare = strcmp (domainname, binding->domainname); | |
127 | if (compare == 0) | |
128 | /* We found it! */ | |
129 | break; | |
130 | if (compare < 0) | |
131 | { | |
132 | /* It is not in the list. */ | |
133 | binding = NULL; | |
134 | break; | |
135 | } | |
136 | } | |
137 | ||
17c389fc | 138 | if (binding != NULL) |
24906b43 | 139 | { |
17c389fc | 140 | if (dirnamep) |
24906b43 | 141 | { |
17c389fc UD |
142 | const char *dirname = *dirnamep; |
143 | ||
144 | if (dirname == NULL) | |
145 | /* The current binding has be to returned. */ | |
146 | *dirnamep = binding->dirname; | |
40a55d20 UD |
147 | else |
148 | { | |
17c389fc UD |
149 | /* The domain is already bound. If the new value and the old |
150 | one are equal we simply do nothing. Otherwise replace the | |
151 | old binding. */ | |
152 | char *result = binding->dirname; | |
153 | if (strcmp (dirname, result) != 0) | |
154 | { | |
a334319f UD |
155 | if (strcmp (dirname, INTUSE(_nl_default_dirname)) == 0) |
156 | result = (char *) INTUSE(_nl_default_dirname); | |
17c389fc UD |
157 | else |
158 | { | |
40a55d20 | 159 | #if defined _LIBC || defined HAVE_STRDUP |
17c389fc | 160 | result = strdup (dirname); |
40a55d20 | 161 | #else |
17c389fc UD |
162 | size_t len = strlen (dirname) + 1; |
163 | result = (char *) malloc (len); | |
164 | if (__builtin_expect (result != NULL, 1)) | |
165 | memcpy (result, dirname, len); | |
40a55d20 | 166 | #endif |
17c389fc UD |
167 | } |
168 | ||
169 | if (__builtin_expect (result != NULL, 1)) | |
170 | { | |
a334319f | 171 | if (binding->dirname != INTUSE(_nl_default_dirname)) |
17c389fc UD |
172 | free (binding->dirname); |
173 | ||
174 | binding->dirname = result; | |
175 | modified = 1; | |
176 | } | |
177 | } | |
178 | *dirnamep = result; | |
40a55d20 | 179 | } |
17c389fc UD |
180 | } |
181 | ||
182 | if (codesetp) | |
183 | { | |
184 | const char *codeset = *codesetp; | |
24906b43 | 185 | |
17c389fc UD |
186 | if (codeset == NULL) |
187 | /* The current binding has be to returned. */ | |
188 | *codesetp = binding->codeset; | |
189 | else | |
0ed99ce4 | 190 | { |
17c389fc UD |
191 | /* The domain is already bound. If the new value and the old |
192 | one are equal we simply do nothing. Otherwise replace the | |
193 | old binding. */ | |
194 | char *result = binding->codeset; | |
195 | if (result == NULL || strcmp (codeset, result) != 0) | |
196 | { | |
197 | #if defined _LIBC || defined HAVE_STRDUP | |
198 | result = strdup (codeset); | |
199 | #else | |
200 | size_t len = strlen (codeset) + 1; | |
201 | result = (char *) malloc (len); | |
202 | if (__builtin_expect (result != NULL, 1)) | |
203 | memcpy (result, codeset, len); | |
204 | #endif | |
24906b43 | 205 | |
17c389fc UD |
206 | if (__builtin_expect (result != NULL, 1)) |
207 | { | |
208 | if (binding->codeset != NULL) | |
209 | free (binding->codeset); | |
210 | ||
211 | binding->codeset = result; | |
a334319f | 212 | ++binding->codeset_cntr; |
17c389fc UD |
213 | modified = 1; |
214 | } | |
215 | } | |
216 | *codesetp = result; | |
0ed99ce4 | 217 | } |
40a55d20 | 218 | } |
24906b43 | 219 | } |
17c389fc UD |
220 | else if ((dirnamep == NULL || *dirnamep == NULL) |
221 | && (codesetp == NULL || *codesetp == NULL)) | |
222 | { | |
223 | /* Simply return the default values. */ | |
224 | if (dirnamep) | |
a334319f | 225 | *dirnamep = INTUSE(_nl_default_dirname); |
17c389fc UD |
226 | if (codesetp) |
227 | *codesetp = NULL; | |
228 | } | |
24906b43 RM |
229 | else |
230 | { | |
231 | /* We have to create a new binding. */ | |
0ed99ce4 | 232 | size_t len = strlen (domainname) + 1; |
24906b43 | 233 | struct binding *new_binding = |
4a4d50f3 | 234 | (struct binding *) malloc (offsetof (struct binding, domainname) + len); |
24906b43 | 235 | |
17c389fc UD |
236 | if (__builtin_expect (new_binding == NULL, 0)) |
237 | goto failed; | |
238 | ||
239 | memcpy (new_binding->domainname, domainname, len); | |
240 | ||
241 | if (dirnamep) | |
24906b43 | 242 | { |
17c389fc | 243 | const char *dirname = *dirnamep; |
0ed99ce4 | 244 | |
17c389fc UD |
245 | if (dirname == NULL) |
246 | /* The default value. */ | |
a334319f | 247 | dirname = INTUSE(_nl_default_dirname); |
0ed99ce4 UD |
248 | else |
249 | { | |
a334319f UD |
250 | if (strcmp (dirname, INTUSE(_nl_default_dirname)) == 0) |
251 | dirname = INTUSE(_nl_default_dirname); | |
17c389fc UD |
252 | else |
253 | { | |
254 | char *result; | |
40a55d20 | 255 | #if defined _LIBC || defined HAVE_STRDUP |
17c389fc UD |
256 | result = strdup (dirname); |
257 | if (__builtin_expect (result == NULL, 0)) | |
258 | goto failed_dirname; | |
40a55d20 | 259 | #else |
17c389fc UD |
260 | size_t len = strlen (dirname) + 1; |
261 | result = (char *) malloc (len); | |
262 | if (__builtin_expect (result == NULL, 0)) | |
263 | goto failed_dirname; | |
264 | memcpy (result, dirname, len); | |
40a55d20 | 265 | #endif |
17c389fc UD |
266 | dirname = result; |
267 | } | |
0ed99ce4 | 268 | } |
17c389fc UD |
269 | *dirnamep = dirname; |
270 | new_binding->dirname = (char *) dirname; | |
24906b43 | 271 | } |
17c389fc UD |
272 | else |
273 | /* The default value. */ | |
a334319f UD |
274 | new_binding->dirname = (char *) INTUSE(_nl_default_dirname); |
275 | ||
276 | new_binding->codeset_cntr = 0; | |
c44a663d | 277 | |
17c389fc | 278 | if (codesetp) |
24906b43 | 279 | { |
17c389fc UD |
280 | const char *codeset = *codesetp; |
281 | ||
282 | if (codeset != NULL) | |
0ed99ce4 | 283 | { |
17c389fc | 284 | char *result; |
24906b43 | 285 | |
17c389fc UD |
286 | #if defined _LIBC || defined HAVE_STRDUP |
287 | result = strdup (codeset); | |
288 | if (__builtin_expect (result == NULL, 0)) | |
289 | goto failed_codeset; | |
290 | #else | |
291 | size_t len = strlen (codeset) + 1; | |
292 | result = (char *) malloc (len); | |
293 | if (__builtin_expect (result == NULL, 0)) | |
294 | goto failed_codeset; | |
295 | memcpy (result, codeset, len); | |
296 | #endif | |
297 | codeset = result; | |
a334319f | 298 | ++new_binding->codeset_cntr; |
0ed99ce4 | 299 | } |
17c389fc UD |
300 | *codesetp = codeset; |
301 | new_binding->codeset = (char *) codeset; | |
302 | } | |
303 | else | |
304 | new_binding->codeset = NULL; | |
305 | ||
306 | /* Now enqueue it. */ | |
307 | if (_nl_domain_bindings == NULL | |
308 | || strcmp (domainname, _nl_domain_bindings->domainname) < 0) | |
309 | { | |
310 | new_binding->next = _nl_domain_bindings; | |
311 | _nl_domain_bindings = new_binding; | |
312 | } | |
313 | else | |
314 | { | |
315 | binding = _nl_domain_bindings; | |
316 | while (binding->next != NULL | |
317 | && strcmp (domainname, binding->next->domainname) > 0) | |
318 | binding = binding->next; | |
319 | ||
320 | new_binding->next = binding->next; | |
321 | binding->next = new_binding; | |
322 | } | |
323 | ||
324 | modified = 1; | |
325 | ||
326 | /* Here we deal with memory allocation failures. */ | |
327 | if (0) | |
328 | { | |
329 | failed_codeset: | |
a334319f | 330 | if (new_binding->dirname != INTUSE(_nl_default_dirname)) |
17c389fc UD |
331 | free (new_binding->dirname); |
332 | failed_dirname: | |
333 | free (new_binding); | |
334 | failed: | |
335 | if (dirnamep) | |
336 | *dirnamep = NULL; | |
337 | if (codesetp) | |
338 | *codesetp = NULL; | |
24906b43 | 339 | } |
24906b43 RM |
340 | } |
341 | ||
17c389fc UD |
342 | /* If we modified any binding, we flush the caches. */ |
343 | if (modified) | |
0ed99ce4 UD |
344 | ++_nl_msg_cat_cntr; |
345 | ||
346 | __libc_rwlock_unlock (_nl_state_lock); | |
17c389fc UD |
347 | } |
348 | ||
349 | /* Specify that the DOMAINNAME message catalog will be found | |
350 | in DIRNAME rather than in the system locale data base. */ | |
351 | char * | |
352 | BINDTEXTDOMAIN (domainname, dirname) | |
353 | const char *domainname; | |
354 | const char *dirname; | |
355 | { | |
356 | set_binding_values (domainname, &dirname, NULL); | |
357 | return (char *) dirname; | |
358 | } | |
0ed99ce4 | 359 | |
17c389fc UD |
360 | /* Specify the character encoding in which the messages from the |
361 | DOMAINNAME message catalog will be returned. */ | |
362 | char * | |
363 | BIND_TEXTDOMAIN_CODESET (domainname, codeset) | |
364 | const char *domainname; | |
365 | const char *codeset; | |
366 | { | |
367 | set_binding_values (domainname, NULL, &codeset); | |
368 | return (char *) codeset; | |
24906b43 RM |
369 | } |
370 | ||
371 | #ifdef _LIBC | |
17c389fc | 372 | /* Aliases for function names in GNU C Library. */ |
24906b43 | 373 | weak_alias (__bindtextdomain, bindtextdomain); |
17c389fc | 374 | weak_alias (__bind_textdomain_codeset, bind_textdomain_codeset); |
24906b43 | 375 | #endif |