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5bc5a89c | 1 | /* Implementation of the bindtextdomain(3) function |
b0cacab0 | 2 | Copyright (C) 1995-1998, 2000-2003 Free Software Foundation, Inc. |
5bc5a89c | 3 | |
a04eba3f TT |
4 | This program is free software; you can redistribute it and/or modify it |
5 | under the terms of the GNU Library General Public License as published | |
6 | by the Free Software Foundation; either version 2, or (at your option) | |
5bc5a89c TT |
7 | any later version. |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
a04eba3f TT |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Library General Public License for more details. | |
5bc5a89c | 13 | |
a04eba3f TT |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with this program; if not, write to the Free Software | |
8785aaea | 16 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
a04eba3f | 17 | USA. */ |
5bc5a89c TT |
18 | |
19 | #ifdef HAVE_CONFIG_H | |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
a04eba3f TT |
23 | #include <stddef.h> |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
5bc5a89c | 26 | |
a04eba3f TT |
27 | #ifdef _LIBC |
28 | # include <libintl.h> | |
5bc5a89c | 29 | #else |
a04eba3f | 30 | # include "libgnuintl.h" |
5bc5a89c | 31 | #endif |
a04eba3f | 32 | #include "gettextP.h" |
5bc5a89c TT |
33 | |
34 | #ifdef _LIBC | |
a04eba3f TT |
35 | /* We have to handle multi-threaded applications. */ |
36 | # include <bits/libc-lock.h> | |
5bc5a89c | 37 | #else |
a04eba3f TT |
38 | /* Provide dummy implementation if this is outside glibc. */ |
39 | # define __libc_rwlock_define(CLASS, NAME) | |
40 | # define __libc_rwlock_wrlock(NAME) | |
41 | # define __libc_rwlock_unlock(NAME) | |
42 | #endif | |
43 | ||
44 | /* The internal variables in the standalone libintl.a must have different | |
45 | names than the internal variables in GNU libc, otherwise programs | |
46 | using libintl.a cannot be linked statically. */ | |
47 | #if !defined _LIBC | |
48 | # define _nl_default_dirname libintl_nl_default_dirname | |
49 | # define _nl_domain_bindings libintl_nl_domain_bindings | |
50 | #endif | |
51 | ||
52 | /* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */ | |
53 | #ifndef offsetof | |
54 | # define offsetof(type,ident) ((size_t)&(((type*)0)->ident)) | |
5bc5a89c | 55 | #endif |
5bc5a89c TT |
56 | |
57 | /* @@ end of prolog @@ */ | |
58 | ||
59 | /* Contains the default location of the message catalogs. */ | |
60 | extern const char _nl_default_dirname[]; | |
b0cacab0 TT |
61 | #ifdef _LIBC |
62 | extern const char _nl_default_dirname_internal[] attribute_hidden; | |
63 | #else | |
64 | # define INTUSE(name) name | |
65 | #endif | |
5bc5a89c TT |
66 | |
67 | /* List with bindings of specific domains. */ | |
68 | extern struct binding *_nl_domain_bindings; | |
69 | ||
a04eba3f TT |
70 | /* Lock variable to protect the global data in the gettext implementation. */ |
71 | __libc_rwlock_define (extern, _nl_state_lock attribute_hidden) | |
72 | ||
5bc5a89c TT |
73 | |
74 | /* Names for the libintl functions are a problem. They must not clash | |
75 | with existing names and they should follow ANSI C. But this source | |
76 | code is also used in GNU C Library where the names have a __ | |
77 | prefix. So we have to make a difference here. */ | |
78 | #ifdef _LIBC | |
79 | # define BINDTEXTDOMAIN __bindtextdomain | |
a04eba3f | 80 | # define BIND_TEXTDOMAIN_CODESET __bind_textdomain_codeset |
5bc5a89c TT |
81 | # ifndef strdup |
82 | # define strdup(str) __strdup (str) | |
83 | # endif | |
84 | #else | |
a04eba3f TT |
85 | # define BINDTEXTDOMAIN libintl_bindtextdomain |
86 | # define BIND_TEXTDOMAIN_CODESET libintl_bind_textdomain_codeset | |
5bc5a89c TT |
87 | #endif |
88 | ||
a04eba3f TT |
89 | /* Specifies the directory name *DIRNAMEP and the output codeset *CODESETP |
90 | to be used for the DOMAINNAME message catalog. | |
91 | If *DIRNAMEP or *CODESETP is NULL, the corresponding attribute is not | |
92 | modified, only the current value is returned. | |
93 | If DIRNAMEP or CODESETP is NULL, the corresponding attribute is neither | |
94 | modified nor returned. */ | |
95 | static void | |
b0cacab0 TT |
96 | set_binding_values (const char *domainname, |
97 | const char **dirnamep, const char **codesetp) | |
5bc5a89c TT |
98 | { |
99 | struct binding *binding; | |
a04eba3f | 100 | int modified; |
5bc5a89c TT |
101 | |
102 | /* Some sanity checks. */ | |
103 | if (domainname == NULL || domainname[0] == '\0') | |
a04eba3f TT |
104 | { |
105 | if (dirnamep) | |
106 | *dirnamep = NULL; | |
107 | if (codesetp) | |
108 | *codesetp = NULL; | |
109 | return; | |
110 | } | |
111 | ||
112 | __libc_rwlock_wrlock (_nl_state_lock); | |
113 | ||
114 | modified = 0; | |
5bc5a89c TT |
115 | |
116 | for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) | |
117 | { | |
118 | int compare = strcmp (domainname, binding->domainname); | |
119 | if (compare == 0) | |
120 | /* We found it! */ | |
121 | break; | |
122 | if (compare < 0) | |
123 | { | |
124 | /* It is not in the list. */ | |
125 | binding = NULL; | |
126 | break; | |
127 | } | |
128 | } | |
129 | ||
5bc5a89c TT |
130 | if (binding != NULL) |
131 | { | |
a04eba3f | 132 | if (dirnamep) |
5bc5a89c | 133 | { |
a04eba3f | 134 | const char *dirname = *dirnamep; |
5bc5a89c | 135 | |
a04eba3f TT |
136 | if (dirname == NULL) |
137 | /* The current binding has be to returned. */ | |
138 | *dirnamep = binding->dirname; | |
5bc5a89c TT |
139 | else |
140 | { | |
a04eba3f TT |
141 | /* The domain is already bound. If the new value and the old |
142 | one are equal we simply do nothing. Otherwise replace the | |
143 | old binding. */ | |
144 | char *result = binding->dirname; | |
145 | if (strcmp (dirname, result) != 0) | |
146 | { | |
b0cacab0 TT |
147 | if (strcmp (dirname, INTUSE(_nl_default_dirname)) == 0) |
148 | result = (char *) INTUSE(_nl_default_dirname); | |
a04eba3f TT |
149 | else |
150 | { | |
5bc5a89c | 151 | #if defined _LIBC || defined HAVE_STRDUP |
a04eba3f | 152 | result = strdup (dirname); |
5bc5a89c | 153 | #else |
a04eba3f TT |
154 | size_t len = strlen (dirname) + 1; |
155 | result = (char *) malloc (len); | |
156 | if (__builtin_expect (result != NULL, 1)) | |
157 | memcpy (result, dirname, len); | |
5bc5a89c | 158 | #endif |
a04eba3f TT |
159 | } |
160 | ||
161 | if (__builtin_expect (result != NULL, 1)) | |
162 | { | |
b0cacab0 | 163 | if (binding->dirname != INTUSE(_nl_default_dirname)) |
a04eba3f TT |
164 | free (binding->dirname); |
165 | ||
166 | binding->dirname = result; | |
167 | modified = 1; | |
168 | } | |
169 | } | |
170 | *dirnamep = result; | |
5bc5a89c | 171 | } |
a04eba3f | 172 | } |
5bc5a89c | 173 | |
a04eba3f TT |
174 | if (codesetp) |
175 | { | |
176 | const char *codeset = *codesetp; | |
5bc5a89c | 177 | |
a04eba3f TT |
178 | if (codeset == NULL) |
179 | /* The current binding has be to returned. */ | |
180 | *codesetp = binding->codeset; | |
181 | else | |
182 | { | |
183 | /* The domain is already bound. If the new value and the old | |
184 | one are equal we simply do nothing. Otherwise replace the | |
185 | old binding. */ | |
186 | char *result = binding->codeset; | |
187 | if (result == NULL || strcmp (codeset, result) != 0) | |
188 | { | |
189 | #if defined _LIBC || defined HAVE_STRDUP | |
190 | result = strdup (codeset); | |
191 | #else | |
192 | size_t len = strlen (codeset) + 1; | |
193 | result = (char *) malloc (len); | |
194 | if (__builtin_expect (result != NULL, 1)) | |
195 | memcpy (result, codeset, len); | |
196 | #endif | |
197 | ||
198 | if (__builtin_expect (result != NULL, 1)) | |
199 | { | |
45e338f5 | 200 | free (binding->codeset); |
a04eba3f TT |
201 | |
202 | binding->codeset = result; | |
203 | binding->codeset_cntr++; | |
204 | modified = 1; | |
205 | } | |
206 | } | |
207 | *codesetp = result; | |
208 | } | |
5bc5a89c TT |
209 | } |
210 | } | |
a04eba3f TT |
211 | else if ((dirnamep == NULL || *dirnamep == NULL) |
212 | && (codesetp == NULL || *codesetp == NULL)) | |
213 | { | |
214 | /* Simply return the default values. */ | |
215 | if (dirnamep) | |
b0cacab0 | 216 | *dirnamep = INTUSE(_nl_default_dirname); |
a04eba3f TT |
217 | if (codesetp) |
218 | *codesetp = NULL; | |
219 | } | |
5bc5a89c TT |
220 | else |
221 | { | |
222 | /* We have to create a new binding. */ | |
a04eba3f | 223 | size_t len = strlen (domainname) + 1; |
5bc5a89c | 224 | struct binding *new_binding = |
a04eba3f TT |
225 | (struct binding *) malloc (offsetof (struct binding, domainname) + len); |
226 | ||
227 | if (__builtin_expect (new_binding == NULL, 0)) | |
228 | goto failed; | |
229 | ||
230 | memcpy (new_binding->domainname, domainname, len); | |
5bc5a89c | 231 | |
a04eba3f TT |
232 | if (dirnamep) |
233 | { | |
234 | const char *dirname = *dirnamep; | |
5bc5a89c | 235 | |
a04eba3f TT |
236 | if (dirname == NULL) |
237 | /* The default value. */ | |
b0cacab0 | 238 | dirname = INTUSE(_nl_default_dirname); |
a04eba3f TT |
239 | else |
240 | { | |
b0cacab0 TT |
241 | if (strcmp (dirname, INTUSE(_nl_default_dirname)) == 0) |
242 | dirname = INTUSE(_nl_default_dirname); | |
a04eba3f TT |
243 | else |
244 | { | |
245 | char *result; | |
5bc5a89c | 246 | #if defined _LIBC || defined HAVE_STRDUP |
a04eba3f TT |
247 | result = strdup (dirname); |
248 | if (__builtin_expect (result == NULL, 0)) | |
249 | goto failed_dirname; | |
5bc5a89c | 250 | #else |
a04eba3f TT |
251 | size_t len = strlen (dirname) + 1; |
252 | result = (char *) malloc (len); | |
253 | if (__builtin_expect (result == NULL, 0)) | |
254 | goto failed_dirname; | |
255 | memcpy (result, dirname, len); | |
5bc5a89c | 256 | #endif |
a04eba3f TT |
257 | dirname = result; |
258 | } | |
259 | } | |
260 | *dirnamep = dirname; | |
261 | new_binding->dirname = (char *) dirname; | |
262 | } | |
5bc5a89c | 263 | else |
a04eba3f | 264 | /* The default value. */ |
b0cacab0 | 265 | new_binding->dirname = (char *) INTUSE(_nl_default_dirname); |
a04eba3f TT |
266 | |
267 | new_binding->codeset_cntr = 0; | |
268 | ||
269 | if (codesetp) | |
5bc5a89c | 270 | { |
a04eba3f TT |
271 | const char *codeset = *codesetp; |
272 | ||
273 | if (codeset != NULL) | |
274 | { | |
275 | char *result; | |
276 | ||
5bc5a89c | 277 | #if defined _LIBC || defined HAVE_STRDUP |
a04eba3f TT |
278 | result = strdup (codeset); |
279 | if (__builtin_expect (result == NULL, 0)) | |
280 | goto failed_codeset; | |
5bc5a89c | 281 | #else |
a04eba3f TT |
282 | size_t len = strlen (codeset) + 1; |
283 | result = (char *) malloc (len); | |
284 | if (__builtin_expect (result == NULL, 0)) | |
285 | goto failed_codeset; | |
286 | memcpy (result, codeset, len); | |
5bc5a89c | 287 | #endif |
a04eba3f TT |
288 | codeset = result; |
289 | new_binding->codeset_cntr++; | |
290 | } | |
291 | *codesetp = codeset; | |
292 | new_binding->codeset = (char *) codeset; | |
5bc5a89c | 293 | } |
a04eba3f TT |
294 | else |
295 | new_binding->codeset = NULL; | |
5bc5a89c TT |
296 | |
297 | /* Now enqueue it. */ | |
298 | if (_nl_domain_bindings == NULL | |
299 | || strcmp (domainname, _nl_domain_bindings->domainname) < 0) | |
300 | { | |
301 | new_binding->next = _nl_domain_bindings; | |
302 | _nl_domain_bindings = new_binding; | |
303 | } | |
304 | else | |
305 | { | |
306 | binding = _nl_domain_bindings; | |
307 | while (binding->next != NULL | |
308 | && strcmp (domainname, binding->next->domainname) > 0) | |
309 | binding = binding->next; | |
310 | ||
311 | new_binding->next = binding->next; | |
312 | binding->next = new_binding; | |
313 | } | |
314 | ||
a04eba3f TT |
315 | modified = 1; |
316 | ||
317 | /* Here we deal with memory allocation failures. */ | |
318 | if (0) | |
319 | { | |
320 | failed_codeset: | |
b0cacab0 | 321 | if (new_binding->dirname != INTUSE(_nl_default_dirname)) |
a04eba3f TT |
322 | free (new_binding->dirname); |
323 | failed_dirname: | |
324 | free (new_binding); | |
325 | failed: | |
326 | if (dirnamep) | |
327 | *dirnamep = NULL; | |
328 | if (codesetp) | |
329 | *codesetp = NULL; | |
330 | } | |
5bc5a89c TT |
331 | } |
332 | ||
a04eba3f TT |
333 | /* If we modified any binding, we flush the caches. */ |
334 | if (modified) | |
335 | ++_nl_msg_cat_cntr; | |
336 | ||
337 | __libc_rwlock_unlock (_nl_state_lock); | |
338 | } | |
339 | ||
340 | /* Specify that the DOMAINNAME message catalog will be found | |
341 | in DIRNAME rather than in the system locale data base. */ | |
342 | char * | |
b0cacab0 | 343 | BINDTEXTDOMAIN (const char *domainname, const char *dirname) |
a04eba3f TT |
344 | { |
345 | set_binding_values (domainname, &dirname, NULL); | |
346 | return (char *) dirname; | |
347 | } | |
348 | ||
349 | /* Specify the character encoding in which the messages from the | |
350 | DOMAINNAME message catalog will be returned. */ | |
351 | char * | |
b0cacab0 | 352 | BIND_TEXTDOMAIN_CODESET (const char *domainname, const char *codeset) |
a04eba3f TT |
353 | { |
354 | set_binding_values (domainname, NULL, &codeset); | |
355 | return (char *) codeset; | |
5bc5a89c TT |
356 | } |
357 | ||
358 | #ifdef _LIBC | |
a04eba3f | 359 | /* Aliases for function names in GNU C Library. */ |
5bc5a89c | 360 | weak_alias (__bindtextdomain, bindtextdomain); |
a04eba3f | 361 | weak_alias (__bind_textdomain_codeset, bind_textdomain_codeset); |
5bc5a89c | 362 | #endif |