1 /* Implementation of the internal dcigettext function.
2 Copyright (C) 1995-1999, 2000-2006 Free Software Foundation, Inc.
3
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)
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
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
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
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17 USA. */
18
19 /* Tell glibc's <string.h> to provide a prototype for mempcpy().
20 This must come before <config.h> because <config.h> may include
21 <features.h>, and once <features.h> has been included, it's too late. */
22 #ifndef _GNU_SOURCE
23 # define _GNU_SOURCE 1
24 #endif
25
26 #ifdef HAVE_CONFIG_H
27 # include <config.h>
28 #endif
29
30 /* NL_LOCALE_NAME does not work in glibc-2.4. Ignore it. */
31 #undef HAVE_NL_LOCALE_NAME
32
33 #include <sys/types.h>
34
35 #ifdef __GNUC__
36 # define alloca __builtin_alloca
37 # define HAVE_ALLOCA 1
38 #else
39 # ifdef _MSC_VER
40 # include <malloc.h>
41 # define alloca _alloca
42 # else
43 # if defined HAVE_ALLOCA_H || defined _LIBC
44 # include <alloca.h>
45 # else
46 # ifdef _AIX
47 #pragma alloca
48 # else
49 # ifndef alloca
50 char *alloca ();
51 # endif
52 # endif
53 # endif
54 # endif
55 #endif
56
57 #include <errno.h>
58 #ifndef errno
59 extern int errno;
60 #endif
61 #ifndef __set_errno
62 # define __set_errno(val) errno = (val)
63 #endif
64
65 #include <stddef.h>
66 #include <stdlib.h>
67 #include <string.h>
68
69 #if defined HAVE_UNISTD_H || defined _LIBC
70 # include <unistd.h>
71 #endif
72
73 #include <locale.h>
74
75 #ifdef _LIBC
76 /* Guess whether integer division by zero raises signal SIGFPE.
77 Set to 1 only if you know for sure. In case of doubt, set to 0. */
78 # if defined __alpha__ || defined __arm__ || defined __i386__ \
79 || defined __m68k__ || defined __s390__
80 # define INTDIV0_RAISES_SIGFPE 1
81 # else
82 # define INTDIV0_RAISES_SIGFPE 0
83 # endif
84 #endif
85 #if !INTDIV0_RAISES_SIGFPE
86 # include <signal.h>
87 #endif
88
89 #if defined HAVE_SYS_PARAM_H || defined _LIBC
90 # include <sys/param.h>
91 #endif
92
93 #if !defined _LIBC && HAVE_NL_LOCALE_NAME
94 # include <langinfo.h>
95 #endif
96
97 #include "gettextP.h"
98 #include "plural-exp.h"
99 #ifdef _LIBC
100 # include <libintl.h>
101 #else
102 # ifdef IN_LIBGLOCALE
103 # include <libintl.h>
104 # endif
105 # include "libgnuintl.h"
106 #endif
107 #include "hash-string.h"
108
109 /* Handle multi-threaded applications. */
110 #ifdef _LIBC
111 # include <bits/libc-lock.h>
112 # define gl_rwlock_define_initialized __libc_rwlock_define_initialized
113 # define gl_rwlock_rdlock __libc_rwlock_rdlock
114 # define gl_rwlock_wrlock __libc_rwlock_wrlock
115 # define gl_rwlock_unlock __libc_rwlock_unlock
116 #else
117 # include "lock.h"
118 #endif
119
120 /* Alignment of types. */
121 #if defined __GNUC__ && __GNUC__ >= 2
122 # define alignof(TYPE) __alignof__ (TYPE)
123 #else
124 # define alignof(TYPE) \
125 ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2)
126 #endif
127
128 /* The internal variables in the standalone libintl.a must have different
129 names than the internal variables in GNU libc, otherwise programs
130 using libintl.a cannot be linked statically. */
131 #if !defined _LIBC
132 # define _nl_default_default_domain libintl_nl_default_default_domain
133 # define _nl_current_default_domain libintl_nl_current_default_domain
134 # define _nl_default_dirname libintl_nl_default_dirname
135 # define _nl_domain_bindings libintl_nl_domain_bindings
136 #endif
137
138 /* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */
139 #ifndef offsetof
140 # define offsetof(type,ident) ((size_t)&(((type*)0)->ident))
141 #endif
142
143 /* @@ end of prolog @@ */
144
145 #ifdef _LIBC
146 /* Rename the non ANSI C functions. This is required by the standard
147 because some ANSI C functions will require linking with this object
148 file and the name space must not be polluted. */
149 # define getcwd __getcwd
150 # ifndef stpcpy
151 # define stpcpy __stpcpy
152 # endif
153 # define tfind __tfind
154 #else
155 # if !defined HAVE_GETCWD
156 char *getwd ();
157 # define getcwd(buf, max) getwd (buf)
158 # else
159 # if VMS
160 # define getcwd(buf, max) (getcwd) (buf, max, 0)
161 # else
162 char *getcwd ();
163 # endif
164 # endif
165 # ifndef HAVE_STPCPY
166 static char *stpcpy (char *dest, const char *src);
167 # endif
168 # ifndef HAVE_MEMPCPY
169 static void *mempcpy (void *dest, const void *src, size_t n);
170 # endif
171 #endif
172
173 /* Amount to increase buffer size by in each try. */
174 #define PATH_INCR 32
175
176 /* The following is from pathmax.h. */
177 /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
178 PATH_MAX but might cause redefinition warnings when sys/param.h is
179 later included (as on MORE/BSD 4.3). */
180 #if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)
181 # include <limits.h>
182 #endif
183
184 #ifndef _POSIX_PATH_MAX
185 # define _POSIX_PATH_MAX 255
186 #endif
187
188 #if !defined PATH_MAX && defined _PC_PATH_MAX
189 # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX))
190 #endif
191
192 /* Don't include sys/param.h if it already has been. */
193 #if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
194 # include <sys/param.h>
195 #endif
196
197 #if !defined PATH_MAX && defined MAXPATHLEN
198 # define PATH_MAX MAXPATHLEN
199 #endif
200
201 #ifndef PATH_MAX
202 # define PATH_MAX _POSIX_PATH_MAX
203 #endif
204
205 /* Pathname support.
206 ISSLASH(C) tests whether C is a directory separator character.
207 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not,
208 it may be concatenated to a directory pathname.
209 IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
210 */
211 #if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
212 /* Win32, Cygwin, OS/2, DOS */
213 # define ISSLASH(C) ((C) == '/' || (C) == '\\')
214 # define HAS_DEVICE(P) \
215 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
216 && (P)[1] == ':')
217 # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
218 # define IS_PATH_WITH_DIR(P) \
219 (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
220 #else
221 /* Unix */
222 # define ISSLASH(C) ((C) == '/')
223 # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
224 # define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
225 #endif
226
227 /* Whether to support different locales in different threads. */
228 #if defined _LIBC || HAVE_NL_LOCALE_NAME || (HAVE_STRUCT___LOCALE_STRUCT___NAMES && defined USE_IN_GETTEXT_TESTS) || defined IN_LIBGLOCALE
229 # define HAVE_PER_THREAD_LOCALE
230 #endif
231
232 /* This is the type used for the search tree where known translations
233 are stored. */
234 struct known_translation_t
235 {
236 /* Domain in which to search. */
237 const char *domainname;
238
239 /* The category. */
240 int category;
241
242 #ifdef HAVE_PER_THREAD_LOCALE
243 /* Name of the relevant locale category, or "" for the global locale. */
244 const char *localename;
245 #endif
246
247 #ifdef IN_LIBGLOCALE
248 /* The character encoding. */
249 const char *encoding;
250 #endif
251
252 /* State of the catalog counter at the point the string was found. */
253 int counter;
254
255 /* Catalog where the string was found. */
256 struct loaded_l10nfile *domain;
257
258 /* And finally the translation. */
259 const char *translation;
260 size_t translation_length;
261
262 /* Pointer to the string in question. */
263 char msgid[ZERO];
264 };
265
266 /* Root of the search tree with known translations. We can use this
267 only if the system provides the `tsearch' function family. */
268 #if defined HAVE_TSEARCH || defined _LIBC
269 # include <search.h>
270
271 gl_rwlock_define_initialized (static, tree_lock)
272
273 static void *root;
274
275 # ifdef _LIBC
276 # define tsearch __tsearch
277 # endif
278
279 /* Function to compare two entries in the table of known translations. */
280 static int
transcmp(const void * p1,const void * p2)281 transcmp (const void *p1, const void *p2)
282 {
283 const struct known_translation_t *s1;
284 const struct known_translation_t *s2;
285 int result;
286
287 s1 = (const struct known_translation_t *) p1;
288 s2 = (const struct known_translation_t *) p2;
289
290 result = strcmp (s1->msgid, s2->msgid);
291 if (result == 0)
292 {
293 result = strcmp (s1->domainname, s2->domainname);
294 if (result == 0)
295 {
296 #ifdef HAVE_PER_THREAD_LOCALE
297 result = strcmp (s1->localename, s2->localename);
298 if (result == 0)
299 #endif
300 {
301 #ifdef IN_LIBGLOCALE
302 result = strcmp (s1->encoding, s2->encoding);
303 if (result == 0)
304 #endif
305 /* We compare the category last (though this is the cheapest
306 operation) since it is hopefully always the same (namely
307 LC_MESSAGES). */
308 result = s1->category - s2->category;
309 }
310 }
311 }
312
313 return result;
314 }
315 #endif
316
317 /* Name of the default domain used for gettext(3) prior any call to
318 textdomain(3). The default value for this is "messages". */
319 const char _nl_default_default_domain[] attribute_hidden = "messages";
320
321 #ifndef IN_LIBGLOCALE
322 /* Value used as the default domain for gettext(3). */
323 const char *_nl_current_default_domain attribute_hidden
324 = _nl_default_default_domain;
325 #endif
326
327 /* Contains the default location of the message catalogs. */
328 #if defined __EMX__
329 extern const char _nl_default_dirname[];
330 #else
331 # ifdef _LIBC
332 extern const char _nl_default_dirname[];
333 libc_hidden_proto (_nl_default_dirname)
334 # endif
335 const char _nl_default_dirname[] = LOCALEDIR;
336 # ifdef _LIBC
337 libc_hidden_data_def (_nl_default_dirname)
338 # endif
339 #endif
340
341 #ifndef IN_LIBGLOCALE
342 /* List with bindings of specific domains created by bindtextdomain()
343 calls. */
344 struct binding *_nl_domain_bindings;
345 #endif
346
347 /* Prototypes for local functions. */
348 static char *plural_lookup (struct loaded_l10nfile *domain,
349 unsigned long int n,
350 const char *translation, size_t translation_len)
351 internal_function;
352
353 #ifdef IN_LIBGLOCALE
354 static const char *guess_category_value (int category,
355 const char *categoryname,
356 const char *localename)
357 internal_function;
358 #else
359 static const char *guess_category_value (int category,
360 const char *categoryname)
361 internal_function;
362 #endif
363
364 #ifdef _LIBC
365 # include "../locale/localeinfo.h"
366 # define category_to_name(category) \
367 _nl_category_names.str + _nl_category_name_idxs[category]
368 #else
369 static const char *category_to_name (int category) internal_function;
370 #endif
371 #if (defined _LIBC || HAVE_ICONV) && !defined IN_LIBGLOCALE
372 static const char *get_output_charset (struct binding *domainbinding)
373 internal_function;
374 #endif
375
376
377 /* For those loosing systems which don't have `alloca' we have to add
378 some additional code emulating it. */
379 #ifdef HAVE_ALLOCA
380 /* Nothing has to be done. */
381 # define freea(p) /* nothing */
382 # define ADD_BLOCK(list, address) /* nothing */
383 # define FREE_BLOCKS(list) /* nothing */
384 #else
385 struct block_list
386 {
387 void *address;
388 struct block_list *next;
389 };
390 # define ADD_BLOCK(list, addr) \
391 do { \
392 struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \
393 /* If we cannot get a free block we cannot add the new element to \
394 the list. */ \
395 if (newp != NULL) { \
396 newp->address = (addr); \
397 newp->next = (list); \
398 (list) = newp; \
399 } \
400 } while (0)
401 # define FREE_BLOCKS(list) \
402 do { \
403 while (list != NULL) { \
404 struct block_list *old = list; \
405 list = list->next; \
406 free (old->address); \
407 free (old); \
408 } \
409 } while (0)
410 # undef alloca
411 # define alloca(size) (malloc (size))
412 # define freea(p) free (p)
413 #endif /* have alloca */
414
415
416 #ifdef _LIBC
417 /* List of blocks allocated for translations. */
418 typedef struct transmem_list
419 {
420 struct transmem_list *next;
421 char data[ZERO];
422 } transmem_block_t;
423 static struct transmem_list *transmem_list;
424 #else
425 typedef unsigned char transmem_block_t;
426 #endif
427
428
429 /* Names for the libintl functions are a problem. They must not clash
430 with existing names and they should follow ANSI C. But this source
431 code is also used in GNU C Library where the names have a __
432 prefix. So we have to make a difference here. */
433 #ifdef _LIBC
434 # define DCIGETTEXT __dcigettext
435 #else
436 # define DCIGETTEXT libintl_dcigettext
437 #endif
438
439 /* Lock variable to protect the global data in the gettext implementation. */
440 gl_rwlock_define_initialized (, _nl_state_lock attribute_hidden)
441
442 /* Checking whether the binaries runs SUID must be done and glibc provides
443 easier methods therefore we make a difference here. */
444 #ifdef _LIBC
445 # define ENABLE_SECURE __libc_enable_secure
446 # define DETERMINE_SECURE
447 #else
448 # ifndef HAVE_GETUID
449 # define getuid() 0
450 # endif
451 # ifndef HAVE_GETGID
452 # define getgid() 0
453 # endif
454 # ifndef HAVE_GETEUID
455 # define geteuid() getuid()
456 # endif
457 # ifndef HAVE_GETEGID
458 # define getegid() getgid()
459 # endif
460 static int enable_secure;
461 # define ENABLE_SECURE (enable_secure == 1)
462 # define DETERMINE_SECURE \
463 if (enable_secure == 0) \
464 { \
465 if (getuid () != geteuid () || getgid () != getegid ()) \
466 enable_secure = 1; \
467 else \
468 enable_secure = -1; \
469 }
470 #endif
471
472 /* Get the function to evaluate the plural expression. */
473 #include "eval-plural.h"
474
475 /* Look up MSGID in the DOMAINNAME message catalog for the current
476 CATEGORY locale and, if PLURAL is nonzero, search over string
477 depending on the plural form determined by N. */
478 #ifdef IN_LIBGLOCALE
479 char *
gl_dcigettext(const char * domainname,const char * msgid1,const char * msgid2,int plural,unsigned long int n,int category,const char * localename,const char * encoding)480 gl_dcigettext (const char *domainname,
481 const char *msgid1, const char *msgid2,
482 int plural, unsigned long int n,
483 int category,
484 const char *localename, const char *encoding)
485 #else
486 char *
487 DCIGETTEXT (const char *domainname, const char *msgid1, const char *msgid2,
488 int plural, unsigned long int n, int category)
489 #endif
490 {
491 #ifndef HAVE_ALLOCA
492 struct block_list *block_list = NULL;
493 #endif
494 struct loaded_l10nfile *domain;
495 struct binding *binding;
496 const char *categoryname;
497 const char *categoryvalue;
498 const char *dirname;
499 char *xdomainname;
500 char *single_locale;
501 char *retval;
502 size_t retlen;
503 int saved_errno;
504 #if defined HAVE_TSEARCH || defined _LIBC
505 struct known_translation_t *search;
506 struct known_translation_t **foundp = NULL;
507 size_t msgid_len;
508 # if defined HAVE_PER_THREAD_LOCALE && !defined IN_LIBGLOCALE
509 const char *localename;
510 # endif
511 #endif
512 size_t domainname_len;
513
514 /* If no real MSGID is given return NULL. */
515 if (msgid1 == NULL)
516 return NULL;
517
518 #ifdef _LIBC
519 if (category < 0 || category >= __LC_LAST || category == LC_ALL)
520 /* Bogus. */
521 return (plural == 0
522 ? (char *) msgid1
523 /* Use the Germanic plural rule. */
524 : n == 1 ? (char *) msgid1 : (char *) msgid2);
525 #endif
526
527 gl_rwlock_rdlock (_nl_state_lock);
528
529 /* If DOMAINNAME is NULL, we are interested in the default domain. If
530 CATEGORY is not LC_MESSAGES this might not make much sense but the
531 definition left this undefined. */
532 if (domainname == NULL)
533 domainname = _nl_current_default_domain;
534
535 /* OS/2 specific: backward compatibility with older libintl versions */
536 #ifdef LC_MESSAGES_COMPAT
537 if (category == LC_MESSAGES_COMPAT)
538 category = LC_MESSAGES;
539 #endif
540
541 #if defined HAVE_TSEARCH || defined _LIBC
542 msgid_len = strlen (msgid1) + 1;
543
544 /* Try to find the translation among those which we found at
545 some time. */
546 search = (struct known_translation_t *)
547 alloca (offsetof (struct known_translation_t, msgid) + msgid_len);
548 memcpy (search->msgid, msgid1, msgid_len);
549 search->domainname = domainname;
550 search->category = category;
551 # ifdef HAVE_PER_THREAD_LOCALE
552 # ifndef IN_LIBGLOCALE
553 # ifdef _LIBC
554 localename = __current_locale_name (category);
555 # else
556 # if HAVE_NL_LOCALE_NAME
557 /* NL_LOCALE_NAME is public glibc API introduced in glibc-2.4. */
558 localename = nl_langinfo (NL_LOCALE_NAME (category));
559 # else
560 # if HAVE_STRUCT___LOCALE_STRUCT___NAMES && defined USE_IN_GETTEXT_TESTS
561 /* The __names field is not public glibc API and must therefore not be used
562 in code that is installed in public locations. */
563 {
564 locale_t thread_locale = uselocale (NULL);
565 if (thread_locale != LC_GLOBAL_LOCALE)
566 localename = thread_locale->__names[category];
567 else
568 localename = "";
569 }
570 # endif
571 # endif
572 # endif
573 # endif
574 search->localename = localename;
575 # ifdef IN_LIBGLOCALE
576 search->encoding = encoding;
577 # endif
578 # endif
579
580 /* Since tfind/tsearch manage a balanced tree, concurrent tfind and
581 tsearch calls can be fatal. */
582 gl_rwlock_rdlock (tree_lock);
583
584 foundp = (struct known_translation_t **) tfind (search, &root, transcmp);
585
586 gl_rwlock_unlock (tree_lock);
587
588 freea (search);
589 if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
590 {
591 /* Now deal with plural. */
592 if (plural)
593 retval = plural_lookup ((*foundp)->domain, n, (*foundp)->translation,
594 (*foundp)->translation_length);
595 else
596 retval = (char *) (*foundp)->translation;
597
598 gl_rwlock_unlock (_nl_state_lock);
599 return retval;
600 }
601 #endif
602
603 /* Preserve the `errno' value. */
604 saved_errno = errno;
605
606 /* See whether this is a SUID binary or not. */
607 DETERMINE_SECURE;
608
609 /* First find matching binding. */
610 #ifdef IN_LIBGLOCALE
611 /* We can use a trivial binding, since _nl_find_msg will ignore it anyway,
612 and _nl_load_domain and _nl_find_domain just pass it through. */
613 binding = NULL;
614 dirname = bindtextdomain (domainname, NULL);
615 #else
616 for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
617 {
618 int compare = strcmp (domainname, binding->domainname);
619 if (compare == 0)
620 /* We found it! */
621 break;
622 if (compare < 0)
623 {
624 /* It is not in the list. */
625 binding = NULL;
626 break;
627 }
628 }
629
630 if (binding == NULL)
631 dirname = _nl_default_dirname;
632 else
633 {
634 dirname = binding->dirname;
635 #endif
636 if (!IS_ABSOLUTE_PATH (dirname))
637 {
638 /* We have a relative path. Make it absolute now. */
639 size_t dirname_len = strlen (dirname) + 1;
640 size_t path_max;
641 char *resolved_dirname;
642 char *ret;
643
644 path_max = (unsigned int) PATH_MAX;
645 path_max += 2; /* The getcwd docs say to do this. */
646
647 for (;;)
648 {
649 resolved_dirname = (char *) alloca (path_max + dirname_len);
650 ADD_BLOCK (block_list, tmp_dirname);
651
652 __set_errno (0);
653 ret = getcwd (resolved_dirname, path_max);
654 if (ret != NULL || errno != ERANGE)
655 break;
656
657 path_max += path_max / 2;
658 path_max += PATH_INCR;
659 }
660
661 if (ret == NULL)
662 /* We cannot get the current working directory. Don't signal an
663 error but simply return the default string. */
664 goto return_untranslated;
665
666 stpcpy (stpcpy (strchr (resolved_dirname, '\0'), "/"), dirname);
667 dirname = resolved_dirname;
668 }
669 #ifndef IN_LIBGLOCALE
670 }
671 #endif
672
673 /* Now determine the symbolic name of CATEGORY and its value. */
674 categoryname = category_to_name (category);
675 #ifdef IN_LIBGLOCALE
676 categoryvalue = guess_category_value (category, categoryname, localename);
677 #else
678 categoryvalue = guess_category_value (category, categoryname);
679 #endif
680
681 domainname_len = strlen (domainname);
682 xdomainname = (char *) alloca (strlen (categoryname)
683 + domainname_len + 5);
684 ADD_BLOCK (block_list, xdomainname);
685
686 stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"),
687 domainname, domainname_len),
688 ".mo");
689
690 /* Creating working area. */
691 single_locale = (char *) alloca (strlen (categoryvalue) + 1);
692 ADD_BLOCK (block_list, single_locale);
693
694
695 /* Search for the given string. This is a loop because we perhaps
696 got an ordered list of languages to consider for the translation. */
697 while (1)
698 {
699 /* Make CATEGORYVALUE point to the next element of the list. */
700 while (categoryvalue[0] != '\0' && categoryvalue[0] == ':')
701 ++categoryvalue;
702 if (categoryvalue[0] == '\0')
703 {
704 /* The whole contents of CATEGORYVALUE has been searched but
705 no valid entry has been found. We solve this situation
706 by implicitly appending a "C" entry, i.e. no translation
707 will take place. */
708 single_locale[0] = 'C';
709 single_locale[1] = '\0';
710 }
711 else
712 {
713 char *cp = single_locale;
714 while (categoryvalue[0] != '\0' && categoryvalue[0] != ':')
715 *cp++ = *categoryvalue++;
716 *cp = '\0';
717
718 /* When this is a SUID binary we must not allow accessing files
719 outside the dedicated directories. */
720 if (ENABLE_SECURE && IS_PATH_WITH_DIR (single_locale))
721 /* Ingore this entry. */
722 continue;
723 }
724
725 /* If the current locale value is C (or POSIX) we don't load a
726 domain. Return the MSGID. */
727 if (strcmp (single_locale, "C") == 0
728 || strcmp (single_locale, "POSIX") == 0)
729 break;
730
731 /* Find structure describing the message catalog matching the
732 DOMAINNAME and CATEGORY. */
733 domain = _nl_find_domain (dirname, single_locale, xdomainname, binding);
734
735 if (domain != NULL)
736 {
737 #if defined IN_LIBGLOCALE
738 retval = _nl_find_msg (domain, binding, encoding, msgid1, &retlen);
739 #else
740 retval = _nl_find_msg (domain, binding, msgid1, 1, &retlen);
741 #endif
742
743 if (retval == NULL)
744 {
745 int cnt;
746
747 for (cnt = 0; domain->successor[cnt] != NULL; ++cnt)
748 {
749 #if defined IN_LIBGLOCALE
750 retval = _nl_find_msg (domain->successor[cnt], binding,
751 encoding, msgid1, &retlen);
752 #else
753 retval = _nl_find_msg (domain->successor[cnt], binding,
754 msgid1, 1, &retlen);
755 #endif
756
757 if (retval != NULL)
758 {
759 domain = domain->successor[cnt];
760 break;
761 }
762 }
763 }
764
765 /* Returning -1 means that some resource problem exists
766 (likely memory) and that the strings could not be
767 converted. Return the original strings. */
768 if (__builtin_expect (retval == (char *) -1, 0))
769 break;
770
771 if (retval != NULL)
772 {
773 /* Found the translation of MSGID1 in domain DOMAIN:
774 starting at RETVAL, RETLEN bytes. */
775 FREE_BLOCKS (block_list);
776 #if defined HAVE_TSEARCH || defined _LIBC
777 if (foundp == NULL)
778 {
779 /* Create a new entry and add it to the search tree. */
780 size_t size;
781 struct known_translation_t *newp;
782
783 size = offsetof (struct known_translation_t, msgid)
784 + msgid_len + domainname_len + 1;
785 # ifdef HAVE_PER_THREAD_LOCALE
786 size += strlen (localename) + 1;
787 # endif
788 newp = (struct known_translation_t *) malloc (size);
789 if (newp != NULL)
790 {
791 char *new_domainname;
792 # ifdef HAVE_PER_THREAD_LOCALE
793 char *new_localename;
794 # endif
795
796 new_domainname = mempcpy (newp->msgid, msgid1, msgid_len);
797 memcpy (new_domainname, domainname, domainname_len + 1);
798 # ifdef HAVE_PER_THREAD_LOCALE
799 new_localename = new_domainname + domainname_len + 1;
800 strcpy (new_localename, localename);
801 # endif
802 newp->domainname = new_domainname;
803 newp->category = category;
804 # ifdef HAVE_PER_THREAD_LOCALE
805 newp->localename = new_localename;
806 # endif
807 # ifdef IN_LIBGLOCALE
808 newp->encoding = encoding;
809 # endif
810 newp->counter = _nl_msg_cat_cntr;
811 newp->domain = domain;
812 newp->translation = retval;
813 newp->translation_length = retlen;
814
815 gl_rwlock_wrlock (tree_lock);
816
817 /* Insert the entry in the search tree. */
818 foundp = (struct known_translation_t **)
819 tsearch (newp, &root, transcmp);
820
821 gl_rwlock_unlock (tree_lock);
822
823 if (foundp == NULL
824 || __builtin_expect (*foundp != newp, 0))
825 /* The insert failed. */
826 free (newp);
827 }
828 }
829 else
830 {
831 /* We can update the existing entry. */
832 (*foundp)->counter = _nl_msg_cat_cntr;
833 (*foundp)->domain = domain;
834 (*foundp)->translation = retval;
835 (*foundp)->translation_length = retlen;
836 }
837 #endif
838 __set_errno (saved_errno);
839
840 /* Now deal with plural. */
841 if (plural)
842 retval = plural_lookup (domain, n, retval, retlen);
843
844 gl_rwlock_unlock (_nl_state_lock);
845 return retval;
846 }
847 }
848 }
849
850 return_untranslated:
851 /* Return the untranslated MSGID. */
852 FREE_BLOCKS (block_list);
853 gl_rwlock_unlock (_nl_state_lock);
854 #ifndef _LIBC
855 if (!ENABLE_SECURE)
856 {
857 extern void _nl_log_untranslated (const char *logfilename,
858 const char *domainname,
859 const char *msgid1, const char *msgid2,
860 int plural);
861 const char *logfilename = getenv ("GETTEXT_LOG_UNTRANSLATED");
862
863 if (logfilename != NULL && logfilename[0] != '\0')
864 _nl_log_untranslated (logfilename, domainname, msgid1, msgid2, plural);
865 }
866 #endif
867 __set_errno (saved_errno);
868 return (plural == 0
869 ? (char *) msgid1
870 /* Use the Germanic plural rule. */
871 : n == 1 ? (char *) msgid1 : (char *) msgid2);
872 }
873
874
875 /* Look up the translation of msgid within DOMAIN_FILE and DOMAINBINDING.
876 Return it if found. Return NULL if not found or in case of a conversion
877 failure (problem in the particular message catalog). Return (char *) -1
878 in case of a memory allocation failure during conversion (only if
879 ENCODING != NULL resp. CONVERT == true). */
880 char *
881 internal_function
882 #ifdef IN_LIBGLOCALE
_nl_find_msg(struct loaded_l10nfile * domain_file,struct binding * domainbinding,const char * encoding,const char * msgid,size_t * lengthp)883 _nl_find_msg (struct loaded_l10nfile *domain_file,
884 struct binding *domainbinding, const char *encoding,
885 const char *msgid,
886 size_t *lengthp)
887 #else
888 _nl_find_msg (struct loaded_l10nfile *domain_file,
889 struct binding *domainbinding,
890 const char *msgid, int convert,
891 size_t *lengthp)
892 #endif
893 {
894 struct loaded_domain *domain;
895 nls_uint32 nstrings;
896 size_t act;
897 char *result;
898 size_t resultlen;
899
900 if (domain_file->decided <= 0)
901 _nl_load_domain (domain_file, domainbinding);
902
903 if (domain_file->data == NULL)
904 return NULL;
905
906 domain = (struct loaded_domain *) domain_file->data;
907
908 nstrings = domain->nstrings;
909
910 /* Locate the MSGID and its translation. */
911 if (domain->hash_tab != NULL)
912 {
913 /* Use the hashing table. */
914 nls_uint32 len = strlen (msgid);
915 nls_uint32 hash_val = __hash_string (msgid);
916 nls_uint32 idx = hash_val % domain->hash_size;
917 nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2));
918
919 while (1)
920 {
921 nls_uint32 nstr =
922 W (domain->must_swap_hash_tab, domain->hash_tab[idx]);
923
924 if (nstr == 0)
925 /* Hash table entry is empty. */
926 return NULL;
927
928 nstr--;
929
930 /* Compare msgid with the original string at index nstr.
931 We compare the lengths with >=, not ==, because plural entries
932 are represented by strings with an embedded NUL. */
933 if (nstr < nstrings
934 ? W (domain->must_swap, domain->orig_tab[nstr].length) >= len
935 && (strcmp (msgid,
936 domain->data + W (domain->must_swap,
937 domain->orig_tab[nstr].offset))
938 == 0)
939 : domain->orig_sysdep_tab[nstr - nstrings].length > len
940 && (strcmp (msgid,
941 domain->orig_sysdep_tab[nstr - nstrings].pointer)
942 == 0))
943 {
944 act = nstr;
945 goto found;
946 }
947
948 if (idx >= domain->hash_size - incr)
949 idx -= domain->hash_size - incr;
950 else
951 idx += incr;
952 }
953 /* NOTREACHED */
954 }
955 else
956 {
957 /* Try the default method: binary search in the sorted array of
958 messages. */
959 size_t top, bottom;
960
961 bottom = 0;
962 top = nstrings;
963 while (bottom < top)
964 {
965 int cmp_val;
966
967 act = (bottom + top) / 2;
968 cmp_val = strcmp (msgid, (domain->data
969 + W (domain->must_swap,
970 domain->orig_tab[act].offset)));
971 if (cmp_val < 0)
972 top = act;
973 else if (cmp_val > 0)
974 bottom = act + 1;
975 else
976 goto found;
977 }
978 /* No translation was found. */
979 return NULL;
980 }
981
982 found:
983 /* The translation was found at index ACT. If we have to convert the
984 string to use a different character set, this is the time. */
985 if (act < nstrings)
986 {
987 result = (char *)
988 (domain->data + W (domain->must_swap, domain->trans_tab[act].offset));
989 resultlen = W (domain->must_swap, domain->trans_tab[act].length) + 1;
990 }
991 else
992 {
993 result = (char *) domain->trans_sysdep_tab[act - nstrings].pointer;
994 resultlen = domain->trans_sysdep_tab[act - nstrings].length;
995 }
996
997 #if defined _LIBC || HAVE_ICONV
998 # ifdef IN_LIBGLOCALE
999 if (encoding != NULL)
1000 # else
1001 if (convert)
1002 # endif
1003 {
1004 /* We are supposed to do a conversion. */
1005 # ifndef IN_LIBGLOCALE
1006 const char *encoding = get_output_charset (domainbinding);
1007 # endif
1008
1009 /* Search whether a table with converted translations for this
1010 encoding has already been allocated. */
1011 size_t nconversions = domain->nconversions;
1012 struct converted_domain *convd = NULL;
1013 size_t i;
1014
1015 for (i = nconversions; i > 0; )
1016 {
1017 i--;
1018 if (strcmp (domain->conversions[i].encoding, encoding) == 0)
1019 {
1020 convd = &domain->conversions[i];
1021 break;
1022 }
1023 }
1024
1025 if (convd == NULL)
1026 {
1027 /* Allocate a table for the converted translations for this
1028 encoding. */
1029 struct converted_domain *new_conversions =
1030 (struct converted_domain *)
1031 (domain->conversions != NULL
1032 ? realloc (domain->conversions,
1033 (nconversions + 1) * sizeof (struct converted_domain))
1034 : malloc ((nconversions + 1) * sizeof (struct converted_domain)));
1035
1036 if (__builtin_expect (new_conversions == NULL, 0))
1037 /* Nothing we can do, no more memory. We cannot use the
1038 translation because it might be encoded incorrectly. */
1039 return (char *) -1;
1040
1041 domain->conversions = new_conversions;
1042
1043 /* Copy the 'encoding' string to permanent storage. */
1044 encoding = strdup (encoding);
1045 if (__builtin_expect (encoding == NULL, 0))
1046 /* Nothing we can do, no more memory. We cannot use the
1047 translation because it might be encoded incorrectly. */
1048 return (char *) -1;
1049
1050 convd = &new_conversions[nconversions];
1051 convd->encoding = encoding;
1052
1053 /* Find out about the character set the file is encoded with.
1054 This can be found (in textual form) in the entry "". If this
1055 entry does not exist or if this does not contain the 'charset='
1056 information, we will assume the charset matches the one the
1057 current locale and we don't have to perform any conversion. */
1058 # ifdef _LIBC
1059 convd->conv = (__gconv_t) -1;
1060 # else
1061 # if HAVE_ICONV
1062 convd->conv = (iconv_t) -1;
1063 # endif
1064 # endif
1065 {
1066 char *nullentry;
1067 size_t nullentrylen;
1068
1069 /* Get the header entry. This is a recursion, but it doesn't
1070 reallocate domain->conversions because we pass
1071 encoding = NULL or convert = 0, respectively. */
1072 nullentry =
1073 # ifdef IN_LIBGLOCALE
1074 _nl_find_msg (domain_file, domainbinding, NULL, "",
1075 &nullentrylen);
1076 # else
1077 _nl_find_msg (domain_file, domainbinding, "", 0, &nullentrylen);
1078 # endif
1079
1080 if (nullentry != NULL)
1081 {
1082 const char *charsetstr;
1083
1084 charsetstr = strstr (nullentry, "charset=");
1085 if (charsetstr != NULL)
1086 {
1087 size_t len;
1088 char *charset;
1089 const char *outcharset;
1090
1091 charsetstr += strlen ("charset=");
1092 len = strcspn (charsetstr, " \t\n");
1093
1094 charset = (char *) alloca (len + 1);
1095 # if defined _LIBC || HAVE_MEMPCPY
1096 *((char *) mempcpy (charset, charsetstr, len)) = '\0';
1097 # else
1098 memcpy (charset, charsetstr, len);
1099 charset[len] = '\0';
1100 # endif
1101
1102 outcharset = encoding;
1103
1104 # ifdef _LIBC
1105 /* We always want to use transliteration. */
1106 outcharset = norm_add_slashes (outcharset, "TRANSLIT");
1107 charset = norm_add_slashes (charset, "");
1108 int r = __gconv_open (outcharset, charset, &convd->conv,
1109 GCONV_AVOID_NOCONV);
1110 if (__builtin_expect (r != __GCONV_OK, 0))
1111 {
1112 /* If the output encoding is the same there is
1113 nothing to do. Otherwise do not use the
1114 translation at all. */
1115 if (__builtin_expect (r != __GCONV_NOCONV, 1))
1116 return NULL;
1117
1118 convd->conv = (__gconv_t) -1;
1119 }
1120 # else
1121 # if HAVE_ICONV
1122 /* When using GNU libc >= 2.2 or GNU libiconv >= 1.5,
1123 we want to use transliteration. */
1124 # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2 \
1125 || _LIBICONV_VERSION >= 0x0105
1126 if (strchr (outcharset, '/') == NULL)
1127 {
1128 char *tmp;
1129
1130 len = strlen (outcharset);
1131 tmp = (char *) alloca (len + 10 + 1);
1132 memcpy (tmp, outcharset, len);
1133 memcpy (tmp + len, "//TRANSLIT", 10 + 1);
1134 outcharset = tmp;
1135
1136 convd->conv = iconv_open (outcharset, charset);
1137
1138 freea (outcharset);
1139 }
1140 else
1141 # endif
1142 convd->conv = iconv_open (outcharset, charset);
1143 # endif
1144 # endif
1145
1146 freea (charset);
1147 }
1148 }
1149 }
1150 convd->conv_tab = NULL;
1151 /* Here domain->conversions is still == new_conversions. */
1152 domain->nconversions++;
1153 }
1154
1155 if (
1156 # ifdef _LIBC
1157 convd->conv != (__gconv_t) -1
1158 # else
1159 # if HAVE_ICONV
1160 convd->conv != (iconv_t) -1
1161 # endif
1162 # endif
1163 )
1164 {
1165 /* We are supposed to do a conversion. First allocate an
1166 appropriate table with the same structure as the table
1167 of translations in the file, where we can put the pointers
1168 to the converted strings in.
1169 There is a slight complication with plural entries. They
1170 are represented by consecutive NUL terminated strings. We
1171 handle this case by converting RESULTLEN bytes, including
1172 NULs. */
1173
1174 if (convd->conv_tab == NULL
1175 && ((convd->conv_tab =
1176 (char **) calloc (nstrings + domain->n_sysdep_strings,
1177 sizeof (char *)))
1178 == NULL))
1179 /* Mark that we didn't succeed allocating a table. */
1180 convd->conv_tab = (char **) -1;
1181
1182 if (__builtin_expect (convd->conv_tab == (char **) -1, 0))
1183 /* Nothing we can do, no more memory. We cannot use the
1184 translation because it might be encoded incorrectly. */
1185 return (char *) -1;
1186
1187 if (convd->conv_tab[act] == NULL)
1188 {
1189 /* We haven't used this string so far, so it is not
1190 translated yet. Do this now. */
1191 /* We use a bit more efficient memory handling.
1192 We allocate always larger blocks which get used over
1193 time. This is faster than many small allocations. */
1194 __libc_lock_define_initialized (static, lock)
1195 # define INITIAL_BLOCK_SIZE 4080
1196 static unsigned char *freemem;
1197 static size_t freemem_size;
1198
1199 const unsigned char *inbuf;
1200 unsigned char *outbuf;
1201 int malloc_count;
1202 # ifndef _LIBC
1203 transmem_block_t *transmem_list = NULL;
1204 # endif
1205
1206 __libc_lock_lock (lock);
1207
1208 inbuf = (const unsigned char *) result;
1209 outbuf = freemem + sizeof (size_t);
1210
1211 malloc_count = 0;
1212 while (1)
1213 {
1214 transmem_block_t *newmem;
1215 # ifdef _LIBC
1216 size_t non_reversible;
1217 int res;
1218
1219 if (freemem_size < sizeof (size_t))
1220 goto resize_freemem;
1221
1222 res = __gconv (convd->conv,
1223 &inbuf, inbuf + resultlen,
1224 &outbuf,
1225 outbuf + freemem_size - sizeof (size_t),
1226 &non_reversible);
1227
1228 if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT)
1229 break;
1230
1231 if (res != __GCONV_FULL_OUTPUT)
1232 {
1233 /* We should not use the translation at all, it
1234 is incorrectly encoded. */
1235 __libc_lock_unlock (lock);
1236 return NULL;
1237 }
1238
1239 inbuf = (const unsigned char *) result;
1240 # else
1241 # if HAVE_ICONV
1242 const char *inptr = (const char *) inbuf;
1243 size_t inleft = resultlen;
1244 char *outptr = (char *) outbuf;
1245 size_t outleft;
1246
1247 if (freemem_size < sizeof (size_t))
1248 goto resize_freemem;
1249
1250 outleft = freemem_size - sizeof (size_t);
1251 if (iconv (convd->conv,
1252 (ICONV_CONST char **) &inptr, &inleft,
1253 &outptr, &outleft)
1254 != (size_t) (-1))
1255 {
1256 outbuf = (unsigned char *) outptr;
1257 break;
1258 }
1259 if (errno != E2BIG)
1260 {
1261 __libc_lock_unlock (lock);
1262 return NULL;
1263 }
1264 # endif
1265 # endif
1266
1267 resize_freemem:
1268 /* We must allocate a new buffer or resize the old one. */
1269 if (malloc_count > 0)
1270 {
1271 ++malloc_count;
1272 freemem_size = malloc_count * INITIAL_BLOCK_SIZE;
1273 newmem = (transmem_block_t *) realloc (transmem_list,
1274 freemem_size);
1275 # ifdef _LIBC
1276 if (newmem != NULL)
1277 transmem_list = transmem_list->next;
1278 else
1279 {
1280 struct transmem_list *old = transmem_list;
1281
1282 transmem_list = transmem_list->next;
1283 free (old);
1284 }
1285 # endif
1286 }
1287 else
1288 {
1289 malloc_count = 1;
1290 freemem_size = INITIAL_BLOCK_SIZE;
1291 newmem = (transmem_block_t *) malloc (freemem_size);
1292 }
1293 if (__builtin_expect (newmem == NULL, 0))
1294 {
1295 freemem = NULL;
1296 freemem_size = 0;
1297 __libc_lock_unlock (lock);
1298 return (char *) -1;
1299 }
1300
1301 # ifdef _LIBC
1302 /* Add the block to the list of blocks we have to free
1303 at some point. */
1304 newmem->next = transmem_list;
1305 transmem_list = newmem;
1306
1307 freemem = (unsigned char *) newmem->data;
1308 freemem_size -= offsetof (struct transmem_list, data);
1309 # else
1310 transmem_list = newmem;
1311 freemem = newmem;
1312 # endif
1313
1314 outbuf = freemem + sizeof (size_t);
1315 }
1316
1317 /* We have now in our buffer a converted string. Put this
1318 into the table of conversions. */
1319 *(size_t *) freemem = outbuf - freemem - sizeof (size_t);
1320 convd->conv_tab[act] = (char *) freemem;
1321 /* Shrink freemem, but keep it aligned. */
1322 freemem_size -= outbuf - freemem;
1323 freemem = outbuf;
1324 freemem += freemem_size & (alignof (size_t) - 1);
1325 freemem_size = freemem_size & ~ (alignof (size_t) - 1);
1326
1327 __libc_lock_unlock (lock);
1328 }
1329
1330 /* Now convd->conv_tab[act] contains the translation of all
1331 the plural variants. */
1332 result = convd->conv_tab[act] + sizeof (size_t);
1333 resultlen = *(size_t *) convd->conv_tab[act];
1334 }
1335 }
1336
1337 /* The result string is converted. */
1338
1339 #endif /* _LIBC || HAVE_ICONV */
1340
1341 *lengthp = resultlen;
1342 return result;
1343 }
1344
1345
1346 /* Look up a plural variant. */
1347 static char *
1348 internal_function
plural_lookup(struct loaded_l10nfile * domain,unsigned long int n,const char * translation,size_t translation_len)1349 plural_lookup (struct loaded_l10nfile *domain, unsigned long int n,
1350 const char *translation, size_t translation_len)
1351 {
1352 struct loaded_domain *domaindata = (struct loaded_domain *) domain->data;
1353 unsigned long int index;
1354 const char *p;
1355
1356 index = plural_eval (domaindata->plural, n);
1357 if (index >= domaindata->nplurals)
1358 /* This should never happen. It means the plural expression and the
1359 given maximum value do not match. */
1360 index = 0;
1361
1362 /* Skip INDEX strings at TRANSLATION. */
1363 p = translation;
1364 while (index-- > 0)
1365 {
1366 #ifdef _LIBC
1367 p = __rawmemchr (p, '\0');
1368 #else
1369 p = strchr (p, '\0');
1370 #endif
1371 /* And skip over the NUL byte. */
1372 p++;
1373
1374 if (p >= translation + translation_len)
1375 /* This should never happen. It means the plural expression
1376 evaluated to a value larger than the number of variants
1377 available for MSGID1. */
1378 return (char *) translation;
1379 }
1380 return (char *) p;
1381 }
1382
1383 #ifndef _LIBC
1384 /* Return string representation of locale CATEGORY. */
1385 static const char *
1386 internal_function
category_to_name(int category)1387 category_to_name (int category)
1388 {
1389 const char *retval;
1390
1391 switch (category)
1392 {
1393 #ifdef LC_COLLATE
1394 case LC_COLLATE:
1395 retval = "LC_COLLATE";
1396 break;
1397 #endif
1398 #ifdef LC_CTYPE
1399 case LC_CTYPE:
1400 retval = "LC_CTYPE";
1401 break;
1402 #endif
1403 #ifdef LC_MONETARY
1404 case LC_MONETARY:
1405 retval = "LC_MONETARY";
1406 break;
1407 #endif
1408 #ifdef LC_NUMERIC
1409 case LC_NUMERIC:
1410 retval = "LC_NUMERIC";
1411 break;
1412 #endif
1413 #ifdef LC_TIME
1414 case LC_TIME:
1415 retval = "LC_TIME";
1416 break;
1417 #endif
1418 #ifdef LC_MESSAGES
1419 case LC_MESSAGES:
1420 retval = "LC_MESSAGES";
1421 break;
1422 #endif
1423 #ifdef LC_RESPONSE
1424 case LC_RESPONSE:
1425 retval = "LC_RESPONSE";
1426 break;
1427 #endif
1428 #ifdef LC_ALL
1429 case LC_ALL:
1430 /* This might not make sense but is perhaps better than any other
1431 value. */
1432 retval = "LC_ALL";
1433 break;
1434 #endif
1435 default:
1436 /* If you have a better idea for a default value let me know. */
1437 retval = "LC_XXX";
1438 }
1439
1440 return retval;
1441 }
1442 #endif
1443
1444 /* Guess value of current locale from value of the environment variables
1445 or system-dependent defaults. */
1446 static const char *
1447 internal_function
1448 #ifdef IN_LIBGLOCALE
guess_category_value(int category,const char * categoryname,const char * locale)1449 guess_category_value (int category, const char *categoryname,
1450 const char *locale)
1451
1452 #else
1453 guess_category_value (int category, const char *categoryname)
1454 #endif
1455 {
1456 const char *language;
1457 #ifndef IN_LIBGLOCALE
1458 const char *locale;
1459 # ifndef _LIBC
1460 const char *language_default;
1461 int locale_defaulted;
1462 # endif
1463 #endif
1464
1465 /* We use the settings in the following order:
1466 1. The value of the environment variable 'LANGUAGE'. This is a GNU
1467 extension. Its value can be a colon-separated list of locale names.
1468 2. The value of the environment variable 'LC_ALL', 'LC_xxx', or 'LANG'.
1469 More precisely, the first among these that is set to a non-empty value.
1470 This is how POSIX specifies it. The value is a single locale name.
1471 3. A system-dependent preference list of languages. Its value can be a
1472 colon-separated list of locale names.
1473 4. A system-dependent default locale name.
1474 This way:
1475 - System-dependent settings can be overridden by environment variables.
1476 - If the system provides both a list of languages and a default locale,
1477 the former is used. */
1478
1479 #ifndef IN_LIBGLOCALE
1480 /* Fetch the locale name, through the POSIX method of looking to `LC_ALL',
1481 `LC_xxx', and `LANG'. On some systems this can be done by the
1482 `setlocale' function itself. */
1483 # ifdef _LIBC
1484 locale = __current_locale_name (category);
1485 # else
1486 # if HAVE_STRUCT___LOCALE_STRUCT___NAMES && defined USE_IN_GETTEXT_TESTS
1487 /* The __names field is not public glibc API and must therefore not be used
1488 in code that is installed in public locations. */
1489 locale_t thread_locale = uselocale (NULL);
1490 if (thread_locale != LC_GLOBAL_LOCALE)
1491 {
1492 locale = thread_locale->__names[category];
1493 locale_defaulted = 0;
1494 }
1495 else
1496 # endif
1497 {
1498 locale = _nl_locale_name_posix (category, categoryname);
1499 locale_defaulted = 0;
1500 if (locale == NULL)
1501 {
1502 locale = _nl_locale_name_default ();
1503 locale_defaulted = 1;
1504 }
1505 }
1506 # endif
1507 #endif
1508
1509 /* Ignore LANGUAGE and its system-dependent analogon if the locale is set
1510 to "C" because
1511 1. "C" locale usually uses the ASCII encoding, and most international
1512 messages use non-ASCII characters. These characters get displayed
1513 as question marks (if using glibc's iconv()) or as invalid 8-bit
1514 characters (because other iconv()s refuse to convert most non-ASCII
1515 characters to ASCII). In any case, the output is ugly.
1516 2. The precise output of some programs in the "C" locale is specified
1517 by POSIX and should not depend on environment variables like
1518 "LANGUAGE" or system-dependent information. We allow such programs
1519 to use gettext(). */
1520 if (strcmp (locale, "C") == 0)
1521 return locale;
1522
1523 /* The highest priority value is the value of the 'LANGUAGE' environment
1524 variable. */
1525 language = getenv ("LANGUAGE");
1526 if (language != NULL && language[0] != '\0')
1527 return language;
1528 #if !defined IN_LIBGLOCALE && !defined _LIBC
1529 /* The next priority value is the locale name, if not defaulted. */
1530 if (locale_defaulted)
1531 {
1532 /* The next priority value is the default language preferences list. */
1533 language_default = _nl_language_preferences_default ();
1534 if (language_default != NULL)
1535 return language_default;
1536 }
1537 /* The least priority value is the locale name, if defaulted. */
1538 #endif
1539 return locale;
1540 }
1541
1542 #if (defined _LIBC || HAVE_ICONV) && !defined IN_LIBGLOCALE
1543 /* Returns the output charset. */
1544 static const char *
1545 internal_function
get_output_charset(struct binding * domainbinding)1546 get_output_charset (struct binding *domainbinding)
1547 {
1548 /* The output charset should normally be determined by the locale. But
1549 sometimes the locale is not used or not correctly set up, so we provide
1550 a possibility for the user to override this: the OUTPUT_CHARSET
1551 environment variable. Moreover, the value specified through
1552 bind_textdomain_codeset overrides both. */
1553 if (domainbinding != NULL && domainbinding->codeset != NULL)
1554 return domainbinding->codeset;
1555 else
1556 {
1557 /* For speed reasons, we look at the value of OUTPUT_CHARSET only
1558 once. This is a user variable that is not supposed to change
1559 during a program run. */
1560 static char *output_charset_cache;
1561 static int output_charset_cached;
1562
1563 if (!output_charset_cached)
1564 {
1565 const char *value = getenv ("OUTPUT_CHARSET");
1566
1567 if (value != NULL && value[0] != '\0')
1568 {
1569 size_t len = strlen (value) + 1;
1570 char *value_copy = (char *) malloc (len);
1571
1572 if (value_copy != NULL)
1573 memcpy (value_copy, value, len);
1574 output_charset_cache = value_copy;
1575 }
1576 output_charset_cached = 1;
1577 }
1578
1579 if (output_charset_cache != NULL)
1580 return output_charset_cache;
1581 else
1582 {
1583 # ifdef _LIBC
1584 return _NL_CURRENT (LC_CTYPE, CODESET);
1585 # else
1586 # if HAVE_ICONV
1587 extern const char *locale_charset (void);
1588 return locale_charset ();
1589 # endif
1590 # endif
1591 }
1592 }
1593 }
1594 #endif
1595
1596 /* @@ begin of epilog @@ */
1597
1598 /* We don't want libintl.a to depend on any other library. So we
1599 avoid the non-standard function stpcpy. In GNU C Library this
1600 function is available, though. Also allow the symbol HAVE_STPCPY
1601 to be defined. */
1602 #if !_LIBC && !HAVE_STPCPY
1603 static char *
stpcpy(char * dest,const char * src)1604 stpcpy (char *dest, const char *src)
1605 {
1606 while ((*dest++ = *src++) != '\0')
1607 /* Do nothing. */ ;
1608 return dest - 1;
1609 }
1610 #endif
1611
1612 #if !_LIBC && !HAVE_MEMPCPY
1613 static void *
mempcpy(void * dest,const void * src,size_t n)1614 mempcpy (void *dest, const void *src, size_t n)
1615 {
1616 return (void *) ((char *) memcpy (dest, src, n) + n);
1617 }
1618 #endif
1619
1620
1621 #ifdef _LIBC
1622 /* If we want to free all resources we have to do some work at
1623 program's end. */
libc_freeres_fn(free_mem)1624 libc_freeres_fn (free_mem)
1625 {
1626 void *old;
1627
1628 while (_nl_domain_bindings != NULL)
1629 {
1630 struct binding *oldp = _nl_domain_bindings;
1631 _nl_domain_bindings = _nl_domain_bindings->next;
1632 if (oldp->dirname != _nl_default_dirname)
1633 /* Yes, this is a pointer comparison. */
1634 free (oldp->dirname);
1635 free (oldp->codeset);
1636 free (oldp);
1637 }
1638
1639 if (_nl_current_default_domain != _nl_default_default_domain)
1640 /* Yes, again a pointer comparison. */
1641 free ((char *) _nl_current_default_domain);
1642
1643 /* Remove the search tree with the known translations. */
1644 __tdestroy (root, free);
1645 root = NULL;
1646
1647 while (transmem_list != NULL)
1648 {
1649 old = transmem_list;
1650 transmem_list = transmem_list->next;
1651 free (old);
1652 }
1653 }
1654 #endif
1655