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Commit | Line | Data |
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c84142e8 | 1 | /* Implementation of the dcgettext(3) function. |
4c95120e | 2 | Copyright (C) 1995, 1996, 1997, 1998, 1999 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 | ||
81ec4797 | 28 | #if defined __GNUC__ && !defined C_ALLOCA |
24906b43 | 29 | # define alloca __builtin_alloca |
fa00327f | 30 | # define HAVE_ALLOCA 1 |
24906b43 | 31 | #else |
7e7a548e | 32 | # if (defined HAVE_ALLOCA_H || defined _LIBC) && !defined C_ALLOCA |
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 | ||
4c95120e UD |
82 | #if defined HAVE_LOCALE_H || defined _LIBC |
83 | # include <locale.h> | |
84 | #endif | |
85 | ||
24906b43 RM |
86 | #include "gettext.h" |
87 | #include "gettextP.h" | |
88 | #ifdef _LIBC | |
89 | # include <libintl.h> | |
90 | #else | |
91 | # include "libgettext.h" | |
92 | #endif | |
93 | #include "hash-string.h" | |
94 | ||
95 | /* @@ end of prolog @@ */ | |
96 | ||
97 | #ifdef _LIBC | |
98 | /* Rename the non ANSI C functions. This is required by the standard | |
99 | because some ANSI C functions will require linking with this object | |
100 | file and the name space must not be polluted. */ | |
101 | # define getcwd __getcwd | |
9a0a462c UD |
102 | # ifndef stpcpy |
103 | # define stpcpy __stpcpy | |
104 | # endif | |
24906b43 | 105 | #else |
fa0bc87c RM |
106 | # if !defined HAVE_GETCWD |
107 | char *getwd (); | |
108 | # define getcwd(buf, max) getwd (buf) | |
109 | # else | |
24906b43 | 110 | char *getcwd (); |
fa0bc87c | 111 | # endif |
92f3773b RM |
112 | # ifndef HAVE_STPCPY |
113 | static char *stpcpy PARAMS ((char *dest, const char *src)); | |
114 | # endif | |
24906b43 RM |
115 | #endif |
116 | ||
117 | /* Amount to increase buffer size by in each try. */ | |
118 | #define PATH_INCR 32 | |
119 | ||
120 | /* The following is from pathmax.h. */ | |
121 | /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define | |
122 | PATH_MAX but might cause redefinition warnings when sys/param.h is | |
123 | later included (as on MORE/BSD 4.3). */ | |
124 | #if defined(_POSIX_VERSION) || (defined(HAVE_LIMITS_H) && !defined(__GNUC__)) | |
125 | # include <limits.h> | |
126 | #endif | |
127 | ||
128 | #ifndef _POSIX_PATH_MAX | |
129 | # define _POSIX_PATH_MAX 255 | |
130 | #endif | |
131 | ||
132 | #if !defined(PATH_MAX) && defined(_PC_PATH_MAX) | |
133 | # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX)) | |
134 | #endif | |
135 | ||
136 | /* Don't include sys/param.h if it already has been. */ | |
137 | #if defined(HAVE_SYS_PARAM_H) && !defined(PATH_MAX) && !defined(MAXPATHLEN) | |
138 | # include <sys/param.h> | |
139 | #endif | |
140 | ||
141 | #if !defined(PATH_MAX) && defined(MAXPATHLEN) | |
142 | # define PATH_MAX MAXPATHLEN | |
143 | #endif | |
144 | ||
145 | #ifndef PATH_MAX | |
146 | # define PATH_MAX _POSIX_PATH_MAX | |
147 | #endif | |
148 | ||
149 | /* XPG3 defines the result of `setlocale (category, NULL)' as: | |
150 | ``Directs `setlocale()' to query `category' and return the current | |
151 | setting of `local'.'' | |
152 | However it does not specify the exact format. And even worse: POSIX | |
153 | defines this not at all. So we can use this feature only on selected | |
154 | system (e.g. those using GNU C Library). */ | |
155 | #ifdef _LIBC | |
156 | # define HAVE_LOCALE_NULL | |
157 | #endif | |
158 | ||
159 | /* Name of the default domain used for gettext(3) prior any call to | |
160 | textdomain(3). The default value for this is "messages". */ | |
161 | const char _nl_default_default_domain[] = "messages"; | |
162 | ||
163 | /* Value used as the default domain for gettext(3). */ | |
164 | const char *_nl_current_default_domain = _nl_default_default_domain; | |
165 | ||
166 | /* Contains the default location of the message catalogs. */ | |
167 | const char _nl_default_dirname[] = GNULOCALEDIR; | |
168 | ||
169 | /* List with bindings of specific domains created by bindtextdomain() | |
170 | calls. */ | |
171 | struct binding *_nl_domain_bindings; | |
172 | ||
173 | /* Prototypes for local functions. */ | |
7a12c6bb | 174 | static char *find_msg PARAMS ((struct loaded_l10nfile *domain_file, |
dfd2257a UD |
175 | const char *msgid)) internal_function; |
176 | static const char *category_to_name PARAMS ((int category)) internal_function; | |
be10a868 | 177 | static const char *guess_category_value PARAMS ((int category, |
dfd2257a UD |
178 | const char *categoryname)) |
179 | internal_function; | |
24906b43 RM |
180 | |
181 | ||
5f2eab42 RM |
182 | /* For those loosing systems which don't have `alloca' we have to add |
183 | some additional code emulating it. */ | |
184 | #ifdef HAVE_ALLOCA | |
185 | /* Nothing has to be done. */ | |
186 | # define ADD_BLOCK(list, address) /* nothing */ | |
187 | # define FREE_BLOCKS(list) /* nothing */ | |
188 | #else | |
189 | struct block_list | |
190 | { | |
191 | void *address; | |
192 | struct block_list *next; | |
193 | }; | |
194 | # define ADD_BLOCK(list, addr) \ | |
195 | do { \ | |
196 | struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \ | |
197 | /* If we cannot get a free block we cannot add the new element to \ | |
198 | the list. */ \ | |
199 | if (newp != NULL) { \ | |
200 | newp->address = (addr); \ | |
201 | newp->next = (list); \ | |
202 | (list) = newp; \ | |
203 | } \ | |
204 | } while (0) | |
205 | # define FREE_BLOCKS(list) \ | |
206 | do { \ | |
207 | while (list != NULL) { \ | |
208 | struct block_list *old = list; \ | |
209 | list = list->next; \ | |
210 | free (old); \ | |
211 | } \ | |
212 | } while (0) | |
213 | # undef alloca | |
214 | # define alloca(size) (malloc (size)) | |
215 | #endif /* have alloca */ | |
216 | ||
217 | ||
24906b43 RM |
218 | /* Names for the libintl functions are a problem. They must not clash |
219 | with existing names and they should follow ANSI C. But this source | |
220 | code is also used in GNU C Library where the names have a __ | |
221 | prefix. So we have to make a difference here. */ | |
222 | #ifdef _LIBC | |
223 | # define DCGETTEXT __dcgettext | |
224 | #else | |
225 | # define DCGETTEXT dcgettext__ | |
226 | #endif | |
227 | ||
3081378b UD |
228 | /* Checking whether the binaries runs SUID must be done and glibc provides |
229 | easier methods therefore we make a difference here. */ | |
230 | #ifdef _LIBC | |
231 | # define ENABLE_SECURE __libc_enable_secure | |
232 | # define DETERMINE_SECURE | |
233 | #else | |
234 | static int enable_secure; | |
235 | # define ENABLE_SECURE (enable_secure == 1) | |
236 | # define DETERMINE_SECURE \ | |
237 | if (enable_secure == 0) \ | |
238 | { \ | |
239 | if (getuid () != geteuid () || getgid () != getegid ()) \ | |
240 | enable_secure = 1; \ | |
241 | else \ | |
242 | enable_secure = -1; \ | |
243 | } | |
244 | #endif | |
245 | ||
24906b43 RM |
246 | /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY |
247 | locale. */ | |
248 | char * | |
249 | DCGETTEXT (domainname, msgid, category) | |
250 | const char *domainname; | |
251 | const char *msgid; | |
252 | int category; | |
253 | { | |
5f2eab42 | 254 | #ifndef HAVE_ALLOCA |
842907c6 | 255 | struct block_list *block_list = NULL; |
5f2eab42 | 256 | #endif |
7a12c6bb | 257 | struct loaded_l10nfile *domain; |
24906b43 RM |
258 | struct binding *binding; |
259 | const char *categoryname; | |
260 | const char *categoryvalue; | |
261 | char *dirname, *xdomainname; | |
262 | char *single_locale; | |
263 | char *retval; | |
be10a868 | 264 | int saved_errno = errno; |
24906b43 RM |
265 | |
266 | /* If no real MSGID is given return NULL. */ | |
267 | if (msgid == NULL) | |
268 | return NULL; | |
269 | ||
3081378b UD |
270 | /* See whether this is a SUID binary or not. */ |
271 | DETERMINE_SECURE; | |
272 | ||
24906b43 RM |
273 | /* If DOMAINNAME is NULL, we are interested in the default domain. If |
274 | CATEGORY is not LC_MESSAGES this might not make much sense but the | |
3081378b | 275 | definition left this undefined. */ |
24906b43 RM |
276 | if (domainname == NULL) |
277 | domainname = _nl_current_default_domain; | |
278 | ||
279 | /* First find matching binding. */ | |
280 | for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) | |
281 | { | |
282 | int compare = strcmp (domainname, binding->domainname); | |
283 | if (compare == 0) | |
284 | /* We found it! */ | |
285 | break; | |
286 | if (compare < 0) | |
287 | { | |
288 | /* It is not in the list. */ | |
289 | binding = NULL; | |
290 | break; | |
291 | } | |
292 | } | |
293 | ||
294 | if (binding == NULL) | |
295 | dirname = (char *) _nl_default_dirname; | |
296 | else if (binding->dirname[0] == '/') | |
297 | dirname = binding->dirname; | |
298 | else | |
299 | { | |
300 | /* We have a relative path. Make it absolute now. */ | |
301 | size_t dirname_len = strlen (binding->dirname) + 1; | |
302 | size_t path_max; | |
303 | char *ret; | |
304 | ||
8cb569b7 | 305 | path_max = (unsigned int) PATH_MAX; |
24906b43 RM |
306 | path_max += 2; /* The getcwd docs say to do this. */ |
307 | ||
308 | dirname = (char *) alloca (path_max + dirname_len); | |
5f2eab42 | 309 | ADD_BLOCK (block_list, dirname); |
24906b43 | 310 | |
c4029823 | 311 | __set_errno (0); |
24906b43 RM |
312 | while ((ret = getcwd (dirname, path_max)) == NULL && errno == ERANGE) |
313 | { | |
314 | path_max += PATH_INCR; | |
315 | dirname = (char *) alloca (path_max + dirname_len); | |
5f2eab42 | 316 | ADD_BLOCK (block_list, dirname); |
c4029823 | 317 | __set_errno (0); |
24906b43 RM |
318 | } |
319 | ||
320 | if (ret == NULL) | |
be10a868 RM |
321 | { |
322 | /* We cannot get the current working directory. Don't signal an | |
323 | error but simply return the default string. */ | |
5f2eab42 | 324 | FREE_BLOCKS (block_list); |
c4029823 | 325 | __set_errno (saved_errno); |
be10a868 RM |
326 | return (char *) msgid; |
327 | } | |
24906b43 | 328 | |
24906b43 | 329 | stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname); |
24906b43 RM |
330 | } |
331 | ||
332 | /* Now determine the symbolic name of CATEGORY and its value. */ | |
333 | categoryname = category_to_name (category); | |
334 | categoryvalue = guess_category_value (category, categoryname); | |
335 | ||
336 | xdomainname = (char *) alloca (strlen (categoryname) | |
337 | + strlen (domainname) + 5); | |
5f2eab42 | 338 | ADD_BLOCK (block_list, xdomainname); |
40a55d20 | 339 | |
24906b43 RM |
340 | stpcpy (stpcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"), |
341 | domainname), | |
342 | ".mo"); | |
24906b43 RM |
343 | |
344 | /* Creating working area. */ | |
345 | single_locale = (char *) alloca (strlen (categoryvalue) + 1); | |
5f2eab42 | 346 | ADD_BLOCK (block_list, single_locale); |
24906b43 RM |
347 | |
348 | ||
349 | /* Search for the given string. This is a loop because we perhaps | |
3081378b | 350 | got an ordered list of languages to consider for the translation. */ |
24906b43 RM |
351 | while (1) |
352 | { | |
353 | /* Make CATEGORYVALUE point to the next element of the list. */ | |
354 | while (categoryvalue[0] != '\0' && categoryvalue[0] == ':') | |
355 | ++categoryvalue; | |
356 | if (categoryvalue[0] == '\0') | |
357 | { | |
358 | /* The whole contents of CATEGORYVALUE has been searched but | |
359 | no valid entry has been found. We solve this situation | |
6d52618b | 360 | by implicitly appending a "C" entry, i.e. no translation |
24906b43 RM |
361 | will take place. */ |
362 | single_locale[0] = 'C'; | |
363 | single_locale[1] = '\0'; | |
364 | } | |
365 | else | |
366 | { | |
367 | char *cp = single_locale; | |
368 | while (categoryvalue[0] != '\0' && categoryvalue[0] != ':') | |
369 | *cp++ = *categoryvalue++; | |
370 | *cp = '\0'; | |
3081378b UD |
371 | |
372 | /* When this is a SUID binary we must not allow accessing files | |
373 | outside the dedicated directories. */ | |
374 | if (ENABLE_SECURE | |
375 | && (memchr (single_locale, '/', | |
376 | _nl_find_language (single_locale) - single_locale) | |
377 | != NULL)) | |
378 | /* Ingore this entry. */ | |
379 | continue; | |
24906b43 RM |
380 | } |
381 | ||
382 | /* If the current locale value is C (or POSIX) we don't load a | |
383 | domain. Return the MSGID. */ | |
384 | if (strcmp (single_locale, "C") == 0 | |
385 | || strcmp (single_locale, "POSIX") == 0) | |
be10a868 | 386 | { |
5f2eab42 | 387 | FREE_BLOCKS (block_list); |
c4029823 | 388 | __set_errno (saved_errno); |
be10a868 RM |
389 | return (char *) msgid; |
390 | } | |
24906b43 RM |
391 | |
392 | ||
393 | /* Find structure describing the message catalog matching the | |
394 | DOMAINNAME and CATEGORY. */ | |
395 | domain = _nl_find_domain (dirname, single_locale, xdomainname); | |
396 | ||
397 | if (domain != NULL) | |
398 | { | |
399 | retval = find_msg (domain, msgid); | |
400 | ||
401 | if (retval == NULL) | |
402 | { | |
403 | int cnt; | |
404 | ||
be10a868 | 405 | for (cnt = 0; domain->successor[cnt] != NULL; ++cnt) |
75914335 RM |
406 | { |
407 | retval = find_msg (domain->successor[cnt], msgid); | |
408 | ||
409 | if (retval != NULL) | |
410 | break; | |
411 | } | |
24906b43 RM |
412 | } |
413 | ||
414 | if (retval != NULL) | |
be10a868 | 415 | { |
5f2eab42 | 416 | FREE_BLOCKS (block_list); |
c4029823 | 417 | __set_errno (saved_errno); |
be10a868 RM |
418 | return retval; |
419 | } | |
24906b43 RM |
420 | } |
421 | } | |
422 | /* NOTREACHED */ | |
423 | } | |
424 | ||
425 | #ifdef _LIBC | |
426 | /* Alias for function name in GNU C Library. */ | |
427 | weak_alias (__dcgettext, dcgettext); | |
428 | #endif | |
429 | ||
430 | ||
431 | static char * | |
dfd2257a | 432 | internal_function |
7a12c6bb RM |
433 | find_msg (domain_file, msgid) |
434 | struct loaded_l10nfile *domain_file; | |
24906b43 RM |
435 | const char *msgid; |
436 | { | |
6077fe6e UD |
437 | size_t act = 0; |
438 | size_t top, bottom; | |
7a12c6bb | 439 | struct loaded_domain *domain; |
24906b43 | 440 | |
7a12c6bb RM |
441 | if (domain_file->decided == 0) |
442 | _nl_load_domain (domain_file); | |
24906b43 | 443 | |
7a12c6bb | 444 | if (domain_file->data == NULL) |
24906b43 RM |
445 | return NULL; |
446 | ||
7a12c6bb RM |
447 | domain = (struct loaded_domain *) domain_file->data; |
448 | ||
24906b43 RM |
449 | /* Locate the MSGID and its translation. */ |
450 | if (domain->hash_size > 2 && domain->hash_tab != NULL) | |
451 | { | |
452 | /* Use the hashing table. */ | |
453 | nls_uint32 len = strlen (msgid); | |
454 | nls_uint32 hash_val = hash_string (msgid); | |
455 | nls_uint32 idx = hash_val % domain->hash_size; | |
456 | nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2)); | |
457 | nls_uint32 nstr = W (domain->must_swap, domain->hash_tab[idx]); | |
458 | ||
459 | if (nstr == 0) | |
460 | /* Hash table entry is empty. */ | |
461 | return NULL; | |
462 | ||
463 | if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len | |
464 | && strcmp (msgid, | |
465 | domain->data + W (domain->must_swap, | |
466 | domain->orig_tab[nstr - 1].offset)) == 0) | |
467 | return (char *) domain->data + W (domain->must_swap, | |
468 | domain->trans_tab[nstr - 1].offset); | |
469 | ||
470 | while (1) | |
471 | { | |
be10a868 RM |
472 | if (idx >= domain->hash_size - incr) |
473 | idx -= domain->hash_size - incr; | |
24906b43 RM |
474 | else |
475 | idx += incr; | |
476 | ||
477 | nstr = W (domain->must_swap, domain->hash_tab[idx]); | |
478 | if (nstr == 0) | |
479 | /* Hash table entry is empty. */ | |
480 | return NULL; | |
481 | ||
482 | if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len | |
483 | && strcmp (msgid, | |
484 | domain->data + W (domain->must_swap, | |
485 | domain->orig_tab[nstr - 1].offset)) | |
486 | == 0) | |
487 | return (char *) domain->data | |
488 | + W (domain->must_swap, domain->trans_tab[nstr - 1].offset); | |
489 | } | |
490 | /* NOTREACHED */ | |
491 | } | |
492 | ||
493 | /* Now we try the default method: binary search in the sorted | |
494 | array of messages. */ | |
495 | bottom = 0; | |
496 | top = domain->nstrings; | |
497 | while (bottom < top) | |
498 | { | |
499 | int cmp_val; | |
500 | ||
501 | act = (bottom + top) / 2; | |
502 | cmp_val = strcmp (msgid, domain->data | |
503 | + W (domain->must_swap, | |
504 | domain->orig_tab[act].offset)); | |
505 | if (cmp_val < 0) | |
506 | top = act; | |
507 | else if (cmp_val > 0) | |
508 | bottom = act + 1; | |
509 | else | |
510 | break; | |
511 | } | |
512 | ||
513 | /* If an translation is found return this. */ | |
514 | return bottom >= top ? NULL : (char *) domain->data | |
515 | + W (domain->must_swap, | |
516 | domain->trans_tab[act].offset); | |
517 | } | |
518 | ||
519 | ||
520 | /* Return string representation of locale CATEGORY. */ | |
7a12c6bb | 521 | static const char * |
dfd2257a | 522 | internal_function |
7a12c6bb | 523 | category_to_name (category) |
24906b43 RM |
524 | int category; |
525 | { | |
526 | const char *retval; | |
527 | ||
528 | switch (category) | |
529 | { | |
530 | #ifdef LC_COLLATE | |
531 | case LC_COLLATE: | |
532 | retval = "LC_COLLATE"; | |
533 | break; | |
534 | #endif | |
535 | #ifdef LC_CTYPE | |
536 | case LC_CTYPE: | |
537 | retval = "LC_CTYPE"; | |
538 | break; | |
539 | #endif | |
540 | #ifdef LC_MONETARY | |
541 | case LC_MONETARY: | |
542 | retval = "LC_MONETARY"; | |
543 | break; | |
544 | #endif | |
545 | #ifdef LC_NUMERIC | |
546 | case LC_NUMERIC: | |
547 | retval = "LC_NUMERIC"; | |
548 | break; | |
549 | #endif | |
550 | #ifdef LC_TIME | |
551 | case LC_TIME: | |
552 | retval = "LC_TIME"; | |
553 | break; | |
554 | #endif | |
555 | #ifdef LC_MESSAGES | |
556 | case LC_MESSAGES: | |
557 | retval = "LC_MESSAGES"; | |
558 | break; | |
559 | #endif | |
560 | #ifdef LC_RESPONSE | |
561 | case LC_RESPONSE: | |
562 | retval = "LC_RESPONSE"; | |
563 | break; | |
564 | #endif | |
565 | #ifdef LC_ALL | |
566 | case LC_ALL: | |
567 | /* This might not make sense but is perhaps better than any other | |
568 | value. */ | |
569 | retval = "LC_ALL"; | |
570 | break; | |
571 | #endif | |
572 | default: | |
573 | /* If you have a better idea for a default value let me know. */ | |
574 | retval = "LC_XXX"; | |
575 | } | |
576 | ||
577 | return retval; | |
578 | } | |
579 | ||
580 | /* Guess value of current locale from value of the environment variables. */ | |
8f2ece69 | 581 | static const char * |
dfd2257a | 582 | internal_function |
8f2ece69 | 583 | guess_category_value (category, categoryname) |
24906b43 RM |
584 | int category; |
585 | const char *categoryname; | |
586 | { | |
587 | const char *retval; | |
588 | ||
589 | /* The highest priority value is the `LANGUAGE' environment | |
590 | variable. This is a GNU extension. */ | |
591 | retval = getenv ("LANGUAGE"); | |
592 | if (retval != NULL && retval[0] != '\0') | |
593 | return retval; | |
594 | ||
595 | /* `LANGUAGE' is not set. So we have to proceed with the POSIX | |
596 | methods of looking to `LC_ALL', `LC_xxx', and `LANG'. On some | |
597 | systems this can be done by the `setlocale' function itself. */ | |
598 | #if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL | |
599 | return setlocale (category, NULL); | |
600 | #else | |
601 | /* Setting of LC_ALL overwrites all other. */ | |
602 | retval = getenv ("LC_ALL"); | |
603 | if (retval != NULL && retval[0] != '\0') | |
604 | return retval; | |
605 | ||
606 | /* Next comes the name of the desired category. */ | |
607 | retval = getenv (categoryname); | |
608 | if (retval != NULL && retval[0] != '\0') | |
609 | return retval; | |
610 | ||
611 | /* Last possibility is the LANG environment variable. */ | |
612 | retval = getenv ("LANG"); | |
613 | if (retval != NULL && retval[0] != '\0') | |
614 | return retval; | |
615 | ||
616 | /* We use C as the default domain. POSIX says this is implementation | |
617 | defined. */ | |
618 | return "C"; | |
619 | #endif | |
620 | } | |
92f3773b RM |
621 | |
622 | /* @@ begin of epilog @@ */ | |
623 | ||
624 | /* We don't want libintl.a to depend on any other library. So we | |
625 | avoid the non-standard function stpcpy. In GNU C Library this | |
626 | function is available, though. Also allow the symbol HAVE_STPCPY | |
627 | to be defined. */ | |
628 | #if !_LIBC && !HAVE_STPCPY | |
629 | static char * | |
630 | stpcpy (dest, src) | |
631 | char *dest; | |
632 | const char *src; | |
633 | { | |
634 | while ((*dest++ = *src++) != '\0') | |
635 | /* Do nothing. */ ; | |
636 | return dest - 1; | |
637 | } | |
638 | #endif | |
a5a0310d UD |
639 | |
640 | ||
641 | #ifdef _LIBC | |
642 | /* If we want to free all resources we have to do some work at | |
643 | program's end. */ | |
644 | static void __attribute__ ((unused)) | |
645 | free_mem (void) | |
646 | { | |
647 | struct binding *runp; | |
648 | ||
649 | for (runp = _nl_domain_bindings; runp != NULL; runp = runp->next) | |
650 | { | |
651 | free (runp->domainname); | |
652 | if (runp->dirname != _nl_default_dirname) | |
653 | /* Yes, this is a pointer comparison. */ | |
654 | free (runp->dirname); | |
655 | } | |
656 | ||
657 | if (_nl_current_default_domain != _nl_default_default_domain) | |
658 | /* Yes, again a pointer comparison. */ | |
659 | free ((char *) _nl_current_default_domain); | |
660 | } | |
661 | ||
662 | text_set_element (__libc_subfreeres, free_mem); | |
663 | #endif |