]>
Commit | Line | Data |
---|---|---|
c84142e8 | 1 | /* Implementation of the dcgettext(3) function. |
4b8f94d3 | 2 | Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. |
5f2eab42 | 3 | |
c84142e8 | 4 | This file is part of the GNU C Library. Its master source is NOT part of |
40a55d20 | 5 | the C library, however. |
24906b43 | 6 | |
c84142e8 UD |
7 | The GNU C Library is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU Library General Public License as | |
9 | published by the Free Software Foundation; either version 2 of the | |
10 | License, or (at your option) any later version. | |
0393dfd6 | 11 | |
c84142e8 UD |
12 | The GNU C Library is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Library General Public License for more details. | |
24906b43 | 16 | |
c84142e8 UD |
17 | You should have received a copy of the GNU Library General Public |
18 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
19 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
24906b43 RM |
21 | |
22 | #ifdef HAVE_CONFIG_H | |
23 | # include <config.h> | |
24 | #endif | |
25 | ||
26 | #include <sys/types.h> | |
27 | ||
28 | #ifdef __GNUC__ | |
29 | # define alloca __builtin_alloca | |
fa00327f | 30 | # define HAVE_ALLOCA 1 |
24906b43 | 31 | #else |
be10a868 | 32 | # if defined HAVE_ALLOCA_H || defined _LIBC |
24906b43 RM |
33 | # include <alloca.h> |
34 | # else | |
35 | # ifdef _AIX | |
36 | #pragma alloca | |
37 | # else | |
38 | # ifndef alloca | |
39 | char *alloca (); | |
40 | # endif | |
41 | # endif | |
42 | # endif | |
43 | #endif | |
44 | ||
45 | #include <errno.h> | |
46 | #ifndef errno | |
47 | extern int errno; | |
48 | #endif | |
c4029823 UD |
49 | #ifndef __set_errno |
50 | # define __set_errno(val) errno = (val) | |
51 | #endif | |
24906b43 RM |
52 | |
53 | #if defined STDC_HEADERS || defined _LIBC | |
54 | # include <stdlib.h> | |
55 | #else | |
56 | char *getenv (); | |
57 | # ifdef HAVE_MALLOC_H | |
58 | # include <malloc.h> | |
59 | # else | |
60 | void free (); | |
61 | # endif | |
62 | #endif | |
63 | ||
64 | #if defined HAVE_STRING_H || defined _LIBC | |
842907c6 RM |
65 | # ifndef _GNU_SOURCE |
66 | # define _GNU_SOURCE 1 | |
67 | # endif | |
24906b43 RM |
68 | # include <string.h> |
69 | #else | |
70 | # include <strings.h> | |
71 | #endif | |
72 | #if !HAVE_STRCHR && !defined _LIBC | |
73 | # ifndef strchr | |
74 | # define strchr index | |
75 | # endif | |
76 | #endif | |
77 | ||
78 | #if defined HAVE_UNISTD_H || defined _LIBC | |
79 | # include <unistd.h> | |
80 | #endif | |
81 | ||
82 | #include "gettext.h" | |
83 | #include "gettextP.h" | |
84 | #ifdef _LIBC | |
85 | # include <libintl.h> | |
86 | #else | |
87 | # include "libgettext.h" | |
88 | #endif | |
89 | #include "hash-string.h" | |
90 | ||
91 | /* @@ end of prolog @@ */ | |
92 | ||
93 | #ifdef _LIBC | |
94 | /* Rename the non ANSI C functions. This is required by the standard | |
95 | because some ANSI C functions will require linking with this object | |
96 | file and the name space must not be polluted. */ | |
97 | # define getcwd __getcwd | |
9a0a462c UD |
98 | # ifndef stpcpy |
99 | # define stpcpy __stpcpy | |
100 | # endif | |
24906b43 | 101 | #else |
fa0bc87c RM |
102 | # if !defined HAVE_GETCWD |
103 | char *getwd (); | |
104 | # define getcwd(buf, max) getwd (buf) | |
105 | # else | |
24906b43 | 106 | char *getcwd (); |
fa0bc87c | 107 | # endif |
92f3773b RM |
108 | # ifndef HAVE_STPCPY |
109 | static char *stpcpy PARAMS ((char *dest, const char *src)); | |
110 | # endif | |
24906b43 RM |
111 | #endif |
112 | ||
113 | /* Amount to increase buffer size by in each try. */ | |
114 | #define PATH_INCR 32 | |
115 | ||
116 | /* The following is from pathmax.h. */ | |
117 | /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define | |
118 | PATH_MAX but might cause redefinition warnings when sys/param.h is | |
119 | later included (as on MORE/BSD 4.3). */ | |
120 | #if defined(_POSIX_VERSION) || (defined(HAVE_LIMITS_H) && !defined(__GNUC__)) | |
121 | # include <limits.h> | |
122 | #endif | |
123 | ||
124 | #ifndef _POSIX_PATH_MAX | |
125 | # define _POSIX_PATH_MAX 255 | |
126 | #endif | |
127 | ||
128 | #if !defined(PATH_MAX) && defined(_PC_PATH_MAX) | |
129 | # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX)) | |
130 | #endif | |
131 | ||
132 | /* Don't include sys/param.h if it already has been. */ | |
133 | #if defined(HAVE_SYS_PARAM_H) && !defined(PATH_MAX) && !defined(MAXPATHLEN) | |
134 | # include <sys/param.h> | |
135 | #endif | |
136 | ||
137 | #if !defined(PATH_MAX) && defined(MAXPATHLEN) | |
138 | # define PATH_MAX MAXPATHLEN | |
139 | #endif | |
140 | ||
141 | #ifndef PATH_MAX | |
142 | # define PATH_MAX _POSIX_PATH_MAX | |
143 | #endif | |
144 | ||
145 | /* XPG3 defines the result of `setlocale (category, NULL)' as: | |
146 | ``Directs `setlocale()' to query `category' and return the current | |
147 | setting of `local'.'' | |
148 | However it does not specify the exact format. And even worse: POSIX | |
149 | defines this not at all. So we can use this feature only on selected | |
150 | system (e.g. those using GNU C Library). */ | |
151 | #ifdef _LIBC | |
152 | # define HAVE_LOCALE_NULL | |
153 | #endif | |
154 | ||
155 | /* Name of the default domain used for gettext(3) prior any call to | |
156 | textdomain(3). The default value for this is "messages". */ | |
157 | const char _nl_default_default_domain[] = "messages"; | |
158 | ||
159 | /* Value used as the default domain for gettext(3). */ | |
160 | const char *_nl_current_default_domain = _nl_default_default_domain; | |
161 | ||
162 | /* Contains the default location of the message catalogs. */ | |
163 | const char _nl_default_dirname[] = GNULOCALEDIR; | |
164 | ||
165 | /* List with bindings of specific domains created by bindtextdomain() | |
166 | calls. */ | |
167 | struct binding *_nl_domain_bindings; | |
168 | ||
169 | /* Prototypes for local functions. */ | |
7a12c6bb | 170 | static char *find_msg PARAMS ((struct loaded_l10nfile *domain_file, |
dfd2257a UD |
171 | const char *msgid)) internal_function; |
172 | static const char *category_to_name PARAMS ((int category)) internal_function; | |
be10a868 | 173 | static const char *guess_category_value PARAMS ((int category, |
dfd2257a UD |
174 | const char *categoryname)) |
175 | internal_function; | |
24906b43 RM |
176 | |
177 | ||
5f2eab42 RM |
178 | /* For those loosing systems which don't have `alloca' we have to add |
179 | some additional code emulating it. */ | |
180 | #ifdef HAVE_ALLOCA | |
181 | /* Nothing has to be done. */ | |
182 | # define ADD_BLOCK(list, address) /* nothing */ | |
183 | # define FREE_BLOCKS(list) /* nothing */ | |
184 | #else | |
185 | struct block_list | |
186 | { | |
187 | void *address; | |
188 | struct block_list *next; | |
189 | }; | |
190 | # define ADD_BLOCK(list, addr) \ | |
191 | do { \ | |
192 | struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \ | |
193 | /* If we cannot get a free block we cannot add the new element to \ | |
194 | the list. */ \ | |
195 | if (newp != NULL) { \ | |
196 | newp->address = (addr); \ | |
197 | newp->next = (list); \ | |
198 | (list) = newp; \ | |
199 | } \ | |
200 | } while (0) | |
201 | # define FREE_BLOCKS(list) \ | |
202 | do { \ | |
203 | while (list != NULL) { \ | |
204 | struct block_list *old = list; \ | |
205 | list = list->next; \ | |
206 | free (old); \ | |
207 | } \ | |
208 | } while (0) | |
209 | # undef alloca | |
210 | # define alloca(size) (malloc (size)) | |
211 | #endif /* have alloca */ | |
212 | ||
213 | ||
24906b43 RM |
214 | /* Names for the libintl functions are a problem. They must not clash |
215 | with existing names and they should follow ANSI C. But this source | |
216 | code is also used in GNU C Library where the names have a __ | |
217 | prefix. So we have to make a difference here. */ | |
218 | #ifdef _LIBC | |
219 | # define DCGETTEXT __dcgettext | |
220 | #else | |
221 | # define DCGETTEXT dcgettext__ | |
222 | #endif | |
223 | ||
3081378b UD |
224 | /* Checking whether the binaries runs SUID must be done and glibc provides |
225 | easier methods therefore we make a difference here. */ | |
226 | #ifdef _LIBC | |
227 | # define ENABLE_SECURE __libc_enable_secure | |
228 | # define DETERMINE_SECURE | |
229 | #else | |
230 | static int enable_secure; | |
231 | # define ENABLE_SECURE (enable_secure == 1) | |
232 | # define DETERMINE_SECURE \ | |
233 | if (enable_secure == 0) \ | |
234 | { \ | |
235 | if (getuid () != geteuid () || getgid () != getegid ()) \ | |
236 | enable_secure = 1; \ | |
237 | else \ | |
238 | enable_secure = -1; \ | |
239 | } | |
240 | #endif | |
241 | ||
24906b43 RM |
242 | /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY |
243 | locale. */ | |
244 | char * | |
245 | DCGETTEXT (domainname, msgid, category) | |
246 | const char *domainname; | |
247 | const char *msgid; | |
248 | int category; | |
249 | { | |
5f2eab42 | 250 | #ifndef HAVE_ALLOCA |
842907c6 | 251 | struct block_list *block_list = NULL; |
5f2eab42 | 252 | #endif |
7a12c6bb | 253 | struct loaded_l10nfile *domain; |
24906b43 RM |
254 | struct binding *binding; |
255 | const char *categoryname; | |
256 | const char *categoryvalue; | |
257 | char *dirname, *xdomainname; | |
258 | char *single_locale; | |
259 | char *retval; | |
be10a868 | 260 | int saved_errno = errno; |
24906b43 RM |
261 | |
262 | /* If no real MSGID is given return NULL. */ | |
263 | if (msgid == NULL) | |
264 | return NULL; | |
265 | ||
3081378b UD |
266 | /* See whether this is a SUID binary or not. */ |
267 | DETERMINE_SECURE; | |
268 | ||
24906b43 RM |
269 | /* If DOMAINNAME is NULL, we are interested in the default domain. If |
270 | CATEGORY is not LC_MESSAGES this might not make much sense but the | |
3081378b | 271 | definition left this undefined. */ |
24906b43 RM |
272 | if (domainname == NULL) |
273 | domainname = _nl_current_default_domain; | |
274 | ||
275 | /* First find matching binding. */ | |
276 | for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) | |
277 | { | |
278 | int compare = strcmp (domainname, binding->domainname); | |
279 | if (compare == 0) | |
280 | /* We found it! */ | |
281 | break; | |
282 | if (compare < 0) | |
283 | { | |
284 | /* It is not in the list. */ | |
285 | binding = NULL; | |
286 | break; | |
287 | } | |
288 | } | |
289 | ||
290 | if (binding == NULL) | |
291 | dirname = (char *) _nl_default_dirname; | |
292 | else if (binding->dirname[0] == '/') | |
293 | dirname = binding->dirname; | |
294 | else | |
295 | { | |
296 | /* We have a relative path. Make it absolute now. */ | |
297 | size_t dirname_len = strlen (binding->dirname) + 1; | |
298 | size_t path_max; | |
299 | char *ret; | |
300 | ||
301 | path_max = (unsigned) PATH_MAX; | |
302 | path_max += 2; /* The getcwd docs say to do this. */ | |
303 | ||
304 | dirname = (char *) alloca (path_max + dirname_len); | |
5f2eab42 | 305 | ADD_BLOCK (block_list, dirname); |
24906b43 | 306 | |
c4029823 | 307 | __set_errno (0); |
24906b43 RM |
308 | while ((ret = getcwd (dirname, path_max)) == NULL && errno == ERANGE) |
309 | { | |
310 | path_max += PATH_INCR; | |
311 | dirname = (char *) alloca (path_max + dirname_len); | |
5f2eab42 | 312 | ADD_BLOCK (block_list, dirname); |
c4029823 | 313 | __set_errno (0); |
24906b43 RM |
314 | } |
315 | ||
316 | if (ret == NULL) | |
be10a868 RM |
317 | { |
318 | /* We cannot get the current working directory. Don't signal an | |
319 | error but simply return the default string. */ | |
5f2eab42 | 320 | FREE_BLOCKS (block_list); |
c4029823 | 321 | __set_errno (saved_errno); |
be10a868 RM |
322 | return (char *) msgid; |
323 | } | |
24906b43 | 324 | |
24906b43 | 325 | stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname); |
24906b43 RM |
326 | } |
327 | ||
328 | /* Now determine the symbolic name of CATEGORY and its value. */ | |
329 | categoryname = category_to_name (category); | |
330 | categoryvalue = guess_category_value (category, categoryname); | |
331 | ||
332 | xdomainname = (char *) alloca (strlen (categoryname) | |
333 | + strlen (domainname) + 5); | |
5f2eab42 | 334 | ADD_BLOCK (block_list, xdomainname); |
40a55d20 | 335 | |
24906b43 RM |
336 | stpcpy (stpcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"), |
337 | domainname), | |
338 | ".mo"); | |
24906b43 RM |
339 | |
340 | /* Creating working area. */ | |
341 | single_locale = (char *) alloca (strlen (categoryvalue) + 1); | |
5f2eab42 | 342 | ADD_BLOCK (block_list, single_locale); |
24906b43 RM |
343 | |
344 | ||
345 | /* Search for the given string. This is a loop because we perhaps | |
3081378b | 346 | got an ordered list of languages to consider for the translation. */ |
24906b43 RM |
347 | while (1) |
348 | { | |
349 | /* Make CATEGORYVALUE point to the next element of the list. */ | |
350 | while (categoryvalue[0] != '\0' && categoryvalue[0] == ':') | |
351 | ++categoryvalue; | |
352 | if (categoryvalue[0] == '\0') | |
353 | { | |
354 | /* The whole contents of CATEGORYVALUE has been searched but | |
355 | no valid entry has been found. We solve this situation | |
6d52618b | 356 | by implicitly appending a "C" entry, i.e. no translation |
24906b43 RM |
357 | will take place. */ |
358 | single_locale[0] = 'C'; | |
359 | single_locale[1] = '\0'; | |
360 | } | |
361 | else | |
362 | { | |
363 | char *cp = single_locale; | |
364 | while (categoryvalue[0] != '\0' && categoryvalue[0] != ':') | |
365 | *cp++ = *categoryvalue++; | |
366 | *cp = '\0'; | |
3081378b UD |
367 | |
368 | /* When this is a SUID binary we must not allow accessing files | |
369 | outside the dedicated directories. */ | |
370 | if (ENABLE_SECURE | |
371 | && (memchr (single_locale, '/', | |
372 | _nl_find_language (single_locale) - single_locale) | |
373 | != NULL)) | |
374 | /* Ingore this entry. */ | |
375 | continue; | |
24906b43 RM |
376 | } |
377 | ||
378 | /* If the current locale value is C (or POSIX) we don't load a | |
379 | domain. Return the MSGID. */ | |
380 | if (strcmp (single_locale, "C") == 0 | |
381 | || strcmp (single_locale, "POSIX") == 0) | |
be10a868 | 382 | { |
5f2eab42 | 383 | FREE_BLOCKS (block_list); |
c4029823 | 384 | __set_errno (saved_errno); |
be10a868 RM |
385 | return (char *) msgid; |
386 | } | |
24906b43 RM |
387 | |
388 | ||
389 | /* Find structure describing the message catalog matching the | |
390 | DOMAINNAME and CATEGORY. */ | |
391 | domain = _nl_find_domain (dirname, single_locale, xdomainname); | |
392 | ||
393 | if (domain != NULL) | |
394 | { | |
395 | retval = find_msg (domain, msgid); | |
396 | ||
397 | if (retval == NULL) | |
398 | { | |
399 | int cnt; | |
400 | ||
be10a868 | 401 | for (cnt = 0; domain->successor[cnt] != NULL; ++cnt) |
75914335 RM |
402 | { |
403 | retval = find_msg (domain->successor[cnt], msgid); | |
404 | ||
405 | if (retval != NULL) | |
406 | break; | |
407 | } | |
24906b43 RM |
408 | } |
409 | ||
410 | if (retval != NULL) | |
be10a868 | 411 | { |
5f2eab42 | 412 | FREE_BLOCKS (block_list); |
c4029823 | 413 | __set_errno (saved_errno); |
be10a868 RM |
414 | return retval; |
415 | } | |
24906b43 RM |
416 | } |
417 | } | |
418 | /* NOTREACHED */ | |
419 | } | |
420 | ||
421 | #ifdef _LIBC | |
422 | /* Alias for function name in GNU C Library. */ | |
423 | weak_alias (__dcgettext, dcgettext); | |
424 | #endif | |
425 | ||
426 | ||
427 | static char * | |
dfd2257a | 428 | internal_function |
7a12c6bb RM |
429 | find_msg (domain_file, msgid) |
430 | struct loaded_l10nfile *domain_file; | |
24906b43 RM |
431 | const char *msgid; |
432 | { | |
433 | size_t top, act, bottom; | |
7a12c6bb | 434 | struct loaded_domain *domain; |
24906b43 | 435 | |
7a12c6bb RM |
436 | if (domain_file->decided == 0) |
437 | _nl_load_domain (domain_file); | |
24906b43 | 438 | |
7a12c6bb | 439 | if (domain_file->data == NULL) |
24906b43 RM |
440 | return NULL; |
441 | ||
7a12c6bb RM |
442 | domain = (struct loaded_domain *) domain_file->data; |
443 | ||
24906b43 RM |
444 | /* Locate the MSGID and its translation. */ |
445 | if (domain->hash_size > 2 && domain->hash_tab != NULL) | |
446 | { | |
447 | /* Use the hashing table. */ | |
448 | nls_uint32 len = strlen (msgid); | |
449 | nls_uint32 hash_val = hash_string (msgid); | |
450 | nls_uint32 idx = hash_val % domain->hash_size; | |
451 | nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2)); | |
452 | nls_uint32 nstr = W (domain->must_swap, domain->hash_tab[idx]); | |
453 | ||
454 | if (nstr == 0) | |
455 | /* Hash table entry is empty. */ | |
456 | return NULL; | |
457 | ||
458 | if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len | |
459 | && strcmp (msgid, | |
460 | domain->data + W (domain->must_swap, | |
461 | domain->orig_tab[nstr - 1].offset)) == 0) | |
462 | return (char *) domain->data + W (domain->must_swap, | |
463 | domain->trans_tab[nstr - 1].offset); | |
464 | ||
465 | while (1) | |
466 | { | |
be10a868 RM |
467 | if (idx >= domain->hash_size - incr) |
468 | idx -= domain->hash_size - incr; | |
24906b43 RM |
469 | else |
470 | idx += incr; | |
471 | ||
472 | nstr = W (domain->must_swap, domain->hash_tab[idx]); | |
473 | if (nstr == 0) | |
474 | /* Hash table entry is empty. */ | |
475 | return NULL; | |
476 | ||
477 | if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len | |
478 | && strcmp (msgid, | |
479 | domain->data + W (domain->must_swap, | |
480 | domain->orig_tab[nstr - 1].offset)) | |
481 | == 0) | |
482 | return (char *) domain->data | |
483 | + W (domain->must_swap, domain->trans_tab[nstr - 1].offset); | |
484 | } | |
485 | /* NOTREACHED */ | |
486 | } | |
487 | ||
488 | /* Now we try the default method: binary search in the sorted | |
489 | array of messages. */ | |
490 | bottom = 0; | |
491 | top = domain->nstrings; | |
492 | while (bottom < top) | |
493 | { | |
494 | int cmp_val; | |
495 | ||
496 | act = (bottom + top) / 2; | |
497 | cmp_val = strcmp (msgid, domain->data | |
498 | + W (domain->must_swap, | |
499 | domain->orig_tab[act].offset)); | |
500 | if (cmp_val < 0) | |
501 | top = act; | |
502 | else if (cmp_val > 0) | |
503 | bottom = act + 1; | |
504 | else | |
505 | break; | |
506 | } | |
507 | ||
508 | /* If an translation is found return this. */ | |
509 | return bottom >= top ? NULL : (char *) domain->data | |
510 | + W (domain->must_swap, | |
511 | domain->trans_tab[act].offset); | |
512 | } | |
513 | ||
514 | ||
515 | /* Return string representation of locale CATEGORY. */ | |
7a12c6bb | 516 | static const char * |
dfd2257a | 517 | internal_function |
7a12c6bb | 518 | category_to_name (category) |
24906b43 RM |
519 | int category; |
520 | { | |
521 | const char *retval; | |
522 | ||
523 | switch (category) | |
524 | { | |
525 | #ifdef LC_COLLATE | |
526 | case LC_COLLATE: | |
527 | retval = "LC_COLLATE"; | |
528 | break; | |
529 | #endif | |
530 | #ifdef LC_CTYPE | |
531 | case LC_CTYPE: | |
532 | retval = "LC_CTYPE"; | |
533 | break; | |
534 | #endif | |
535 | #ifdef LC_MONETARY | |
536 | case LC_MONETARY: | |
537 | retval = "LC_MONETARY"; | |
538 | break; | |
539 | #endif | |
540 | #ifdef LC_NUMERIC | |
541 | case LC_NUMERIC: | |
542 | retval = "LC_NUMERIC"; | |
543 | break; | |
544 | #endif | |
545 | #ifdef LC_TIME | |
546 | case LC_TIME: | |
547 | retval = "LC_TIME"; | |
548 | break; | |
549 | #endif | |
550 | #ifdef LC_MESSAGES | |
551 | case LC_MESSAGES: | |
552 | retval = "LC_MESSAGES"; | |
553 | break; | |
554 | #endif | |
555 | #ifdef LC_RESPONSE | |
556 | case LC_RESPONSE: | |
557 | retval = "LC_RESPONSE"; | |
558 | break; | |
559 | #endif | |
560 | #ifdef LC_ALL | |
561 | case LC_ALL: | |
562 | /* This might not make sense but is perhaps better than any other | |
563 | value. */ | |
564 | retval = "LC_ALL"; | |
565 | break; | |
566 | #endif | |
567 | default: | |
568 | /* If you have a better idea for a default value let me know. */ | |
569 | retval = "LC_XXX"; | |
570 | } | |
571 | ||
572 | return retval; | |
573 | } | |
574 | ||
575 | /* Guess value of current locale from value of the environment variables. */ | |
8f2ece69 | 576 | static const char * |
dfd2257a | 577 | internal_function |
8f2ece69 | 578 | guess_category_value (category, categoryname) |
24906b43 RM |
579 | int category; |
580 | const char *categoryname; | |
581 | { | |
582 | const char *retval; | |
583 | ||
584 | /* The highest priority value is the `LANGUAGE' environment | |
585 | variable. This is a GNU extension. */ | |
586 | retval = getenv ("LANGUAGE"); | |
587 | if (retval != NULL && retval[0] != '\0') | |
588 | return retval; | |
589 | ||
590 | /* `LANGUAGE' is not set. So we have to proceed with the POSIX | |
591 | methods of looking to `LC_ALL', `LC_xxx', and `LANG'. On some | |
592 | systems this can be done by the `setlocale' function itself. */ | |
593 | #if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL | |
594 | return setlocale (category, NULL); | |
595 | #else | |
596 | /* Setting of LC_ALL overwrites all other. */ | |
597 | retval = getenv ("LC_ALL"); | |
598 | if (retval != NULL && retval[0] != '\0') | |
599 | return retval; | |
600 | ||
601 | /* Next comes the name of the desired category. */ | |
602 | retval = getenv (categoryname); | |
603 | if (retval != NULL && retval[0] != '\0') | |
604 | return retval; | |
605 | ||
606 | /* Last possibility is the LANG environment variable. */ | |
607 | retval = getenv ("LANG"); | |
608 | if (retval != NULL && retval[0] != '\0') | |
609 | return retval; | |
610 | ||
611 | /* We use C as the default domain. POSIX says this is implementation | |
612 | defined. */ | |
613 | return "C"; | |
614 | #endif | |
615 | } | |
92f3773b RM |
616 | |
617 | /* @@ begin of epilog @@ */ | |
618 | ||
619 | /* We don't want libintl.a to depend on any other library. So we | |
620 | avoid the non-standard function stpcpy. In GNU C Library this | |
621 | function is available, though. Also allow the symbol HAVE_STPCPY | |
622 | to be defined. */ | |
623 | #if !_LIBC && !HAVE_STPCPY | |
624 | static char * | |
625 | stpcpy (dest, src) | |
626 | char *dest; | |
627 | const char *src; | |
628 | { | |
629 | while ((*dest++ = *src++) != '\0') | |
630 | /* Do nothing. */ ; | |
631 | return dest - 1; | |
632 | } | |
633 | #endif | |
a5a0310d UD |
634 | |
635 | ||
636 | #ifdef _LIBC | |
637 | /* If we want to free all resources we have to do some work at | |
638 | program's end. */ | |
639 | static void __attribute__ ((unused)) | |
640 | free_mem (void) | |
641 | { | |
642 | struct binding *runp; | |
643 | ||
644 | for (runp = _nl_domain_bindings; runp != NULL; runp = runp->next) | |
645 | { | |
646 | free (runp->domainname); | |
647 | if (runp->dirname != _nl_default_dirname) | |
648 | /* Yes, this is a pointer comparison. */ | |
649 | free (runp->dirname); | |
650 | } | |
651 | ||
652 | if (_nl_current_default_domain != _nl_default_default_domain) | |
653 | /* Yes, again a pointer comparison. */ | |
654 | free ((char *) _nl_current_default_domain); | |
655 | } | |
656 | ||
657 | text_set_element (__libc_subfreeres, free_mem); | |
658 | #endif |