1 /* Implementation of the internal dcigettext function.
2 Copyright (C) 1995-1999, 2000-2002 Free Software Foundation, Inc.
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)
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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. */
23 # define _GNU_SOURCE 1
30 #include <sys/types.h>
33 # define alloca __builtin_alloca
34 # define HAVE_ALLOCA 1
36 # if defined HAVE_ALLOCA_H || defined _LIBC
54 # define __set_errno(val) errno = (val)
61 #if defined HAVE_UNISTD_H || defined _LIBC
67 #if defined HAVE_SYS_PARAM_H || defined _LIBC
68 # include <sys/param.h>
72 #include "plural-exp.h"
76 # include "libgnuintl.h"
78 #include "hash-string.h"
80 /* Thread safetyness. */
82 # include <bits/libc-lock.h>
84 /* Provide dummy implementation if this is outside glibc. */
85 # define __libc_lock_define_initialized(CLASS, NAME)
86 # define __libc_lock_lock(NAME)
87 # define __libc_lock_unlock(NAME)
88 # define __libc_rwlock_define_initialized(CLASS, NAME)
89 # define __libc_rwlock_rdlock(NAME)
90 # define __libc_rwlock_unlock(NAME)
93 /* Alignment of types. */
94 #if defined __GNUC__ && __GNUC__ >= 2
95 # define alignof(TYPE) __alignof__ (TYPE)
97 # define alignof(TYPE) \
98 ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2)
101 /* The internal variables in the standalone libintl.a must have different
102 names than the internal variables in GNU libc, otherwise programs
103 using libintl.a cannot be linked statically. */
105 # define _nl_default_default_domain _nl_default_default_domain__
106 # define _nl_current_default_domain _nl_current_default_domain__
107 # define _nl_default_dirname _nl_default_dirname__
108 # define _nl_domain_bindings _nl_domain_bindings__
111 /* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */
113 # define offsetof(type,ident) ((size_t)&(((type*)0)->ident))
116 /* @@ end of prolog @@ */
119 /* Rename the non ANSI C functions. This is required by the standard
120 because some ANSI C functions will require linking with this object
121 file and the name space must not be polluted. */
122 # define getcwd __getcwd
124 # define stpcpy __stpcpy
126 # define tfind __tfind
128 # if !defined HAVE_GETCWD
130 # define getcwd(buf, max) getwd (buf)
135 static char *stpcpy PARAMS ((char *dest, const char *src));
137 # ifndef HAVE_MEMPCPY
138 static void *mempcpy PARAMS ((void *dest, const void *src, size_t n));
142 /* Amount to increase buffer size by in each try. */
145 /* The following is from pathmax.h. */
146 /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
147 PATH_MAX but might cause redefinition warnings when sys/param.h is
148 later included (as on MORE/BSD 4.3). */
149 #if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)
153 #ifndef _POSIX_PATH_MAX
154 # define _POSIX_PATH_MAX 255
157 #if !defined PATH_MAX && defined _PC_PATH_MAX
158 # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX))
161 /* Don't include sys/param.h if it already has been. */
162 #if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
163 # include <sys/param.h>
166 #if !defined PATH_MAX && defined MAXPATHLEN
167 # define PATH_MAX MAXPATHLEN
171 # define PATH_MAX _POSIX_PATH_MAX
175 ISSLASH(C) tests whether C is a directory separator character.
176 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not,
177 it may be concatenated to a directory pathname.
178 IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
180 #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
181 /* Win32, OS/2, DOS */
182 # define ISSLASH(C) ((C) == '/' || (C) == '\\')
183 # define HAS_DEVICE(P) \
184 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
186 # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
187 # define IS_PATH_WITH_DIR(P) \
188 (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
191 # define ISSLASH(C) ((C) == '/')
192 # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
193 # define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
196 /* This is the type used for the search tree where known translations
198 struct known_translation_t
200 /* Domain in which to search. */
206 /* State of the catalog counter at the point the string was found. */
209 /* Catalog where the string was found. */
210 struct loaded_l10nfile *domain;
212 /* And finally the translation. */
213 const char *translation;
214 size_t translation_length;
216 /* Pointer to the string in question. */
220 /* Root of the search tree with known translations. We can use this
221 only if the system provides the `tsearch' function family. */
222 #if defined HAVE_TSEARCH || defined _LIBC
228 # define tsearch __tsearch
231 /* Function to compare two entries in the table of known translations. */
232 static int transcmp PARAMS ((const void *p1, const void *p2));
238 const struct known_translation_t *s1;
239 const struct known_translation_t *s2;
242 s1 = (const struct known_translation_t *) p1;
243 s2 = (const struct known_translation_t *) p2;
245 result = strcmp (s1->msgid, s2->msgid);
248 result = strcmp (s1->domainname, s2->domainname);
250 /* We compare the category last (though this is the cheapest
251 operation) since it is hopefully always the same (namely
253 result = s1->category - s2->category;
260 /* Name of the default domain used for gettext(3) prior any call to
261 textdomain(3). The default value for this is "messages". */
262 const char _nl_default_default_domain[] attribute_hidden = "messages";
264 /* Value used as the default domain for gettext(3). */
265 const char *_nl_current_default_domain attribute_hidden
266 = _nl_default_default_domain;
268 /* Contains the default location of the message catalogs. */
270 extern const char _nl_default_dirname[];
272 const char _nl_default_dirname[] = LOCALEDIR;
275 /* List with bindings of specific domains created by bindtextdomain()
277 struct binding *_nl_domain_bindings;
279 /* Prototypes for local functions. */
280 static char *plural_lookup PARAMS ((struct loaded_l10nfile *domain,
282 const char *translation,
283 size_t translation_len))
285 static const char *category_to_name PARAMS ((int category)) internal_function;
286 static const char *guess_category_value PARAMS ((int category,
287 const char *categoryname))
291 /* For those loosing systems which don't have `alloca' we have to add
292 some additional code emulating it. */
294 /* Nothing has to be done. */
295 # define ADD_BLOCK(list, address) /* nothing */
296 # define FREE_BLOCKS(list) /* nothing */
301 struct block_list *next;
303 # define ADD_BLOCK(list, addr) \
305 struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \
306 /* If we cannot get a free block we cannot add the new element to \
308 if (newp != NULL) { \
309 newp->address = (addr); \
310 newp->next = (list); \
314 # define FREE_BLOCKS(list) \
316 while (list != NULL) { \
317 struct block_list *old = list; \
323 # define alloca(size) (malloc (size))
324 #endif /* have alloca */
328 /* List of blocks allocated for translations. */
329 typedef struct transmem_list
331 struct transmem_list *next;
334 static struct transmem_list *transmem_list;
336 typedef unsigned char transmem_block_t;
340 /* Names for the libintl functions are a problem. They must not clash
341 with existing names and they should follow ANSI C. But this source
342 code is also used in GNU C Library where the names have a __
343 prefix. So we have to make a difference here. */
345 # define DCIGETTEXT __dcigettext
347 # define DCIGETTEXT dcigettext__
350 /* Lock variable to protect the global data in the gettext implementation. */
352 __libc_rwlock_define_initialized (, _nl_state_lock attribute_hidden)
355 /* Checking whether the binaries runs SUID must be done and glibc provides
356 easier methods therefore we make a difference here. */
358 # define ENABLE_SECURE __libc_enable_secure
359 # define DETERMINE_SECURE
367 # ifndef HAVE_GETEUID
368 # define geteuid() getuid()
370 # ifndef HAVE_GETEGID
371 # define getegid() getgid()
373 static int enable_secure;
374 # define ENABLE_SECURE (enable_secure == 1)
375 # define DETERMINE_SECURE \
376 if (enable_secure == 0) \
378 if (getuid () != geteuid () || getgid () != getegid ()) \
381 enable_secure = -1; \
385 /* Get the function to evaluate the plural expression. */
386 #include "eval-plural.h"
388 /* Look up MSGID in the DOMAINNAME message catalog for the current
389 CATEGORY locale and, if PLURAL is nonzero, search over string
390 depending on the plural form determined by N. */
392 DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category)
393 const char *domainname;
401 struct block_list *block_list = NULL;
403 struct loaded_l10nfile *domain;
404 struct binding *binding;
405 const char *categoryname;
406 const char *categoryvalue;
407 char *dirname, *xdomainname;
412 #if defined HAVE_TSEARCH || defined _LIBC
413 struct known_translation_t *search;
414 struct known_translation_t **foundp = NULL;
417 size_t domainname_len;
419 /* If no real MSGID is given return NULL. */
423 __libc_rwlock_rdlock (_nl_state_lock);
425 /* If DOMAINNAME is NULL, we are interested in the default domain. If
426 CATEGORY is not LC_MESSAGES this might not make much sense but the
427 definition left this undefined. */
428 if (domainname == NULL)
429 domainname = _nl_current_default_domain;
431 /* OS/2 specific: backward compatibility with older libintl versions */
432 #ifdef LC_MESSAGES_COMPAT
433 if (category == LC_MESSAGES_COMPAT)
434 category = LC_MESSAGES;
437 #if defined HAVE_TSEARCH || defined _LIBC
438 msgid_len = strlen (msgid1) + 1;
440 /* Try to find the translation among those which we found at
442 search = (struct known_translation_t *)
443 alloca (offsetof (struct known_translation_t, msgid) + msgid_len);
444 memcpy (search->msgid, msgid1, msgid_len);
445 search->domainname = (char *) domainname;
446 search->category = category;
448 foundp = (struct known_translation_t **) tfind (search, &root, transcmp);
449 if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
451 /* Now deal with plural. */
453 retval = plural_lookup ((*foundp)->domain, n, (*foundp)->translation,
454 (*foundp)->translation_length);
456 retval = (char *) (*foundp)->translation;
458 __libc_rwlock_unlock (_nl_state_lock);
463 /* Preserve the `errno' value. */
466 /* See whether this is a SUID binary or not. */
469 /* First find matching binding. */
470 for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
472 int compare = strcmp (domainname, binding->domainname);
478 /* It is not in the list. */
485 dirname = (char *) _nl_default_dirname;
486 else if (IS_ABSOLUTE_PATH (binding->dirname))
487 dirname = binding->dirname;
490 /* We have a relative path. Make it absolute now. */
491 size_t dirname_len = strlen (binding->dirname) + 1;
495 path_max = (unsigned int) PATH_MAX;
496 path_max += 2; /* The getcwd docs say to do this. */
500 dirname = (char *) alloca (path_max + dirname_len);
501 ADD_BLOCK (block_list, dirname);
504 ret = getcwd (dirname, path_max);
505 if (ret != NULL || errno != ERANGE)
508 path_max += path_max / 2;
509 path_max += PATH_INCR;
514 /* We cannot get the current working directory. Don't signal an
515 error but simply return the default string. */
516 FREE_BLOCKS (block_list);
517 __libc_rwlock_unlock (_nl_state_lock);
518 __set_errno (saved_errno);
521 /* Use the Germanic plural rule. */
522 : n == 1 ? (char *) msgid1 : (char *) msgid2);
525 stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname);
528 /* Now determine the symbolic name of CATEGORY and its value. */
529 categoryname = category_to_name (category);
530 categoryvalue = guess_category_value (category, categoryname);
532 domainname_len = strlen (domainname);
533 xdomainname = (char *) alloca (strlen (categoryname)
534 + domainname_len + 5);
535 ADD_BLOCK (block_list, xdomainname);
537 stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"),
538 domainname, domainname_len),
541 /* Creating working area. */
542 single_locale = (char *) alloca (strlen (categoryvalue) + 1);
543 ADD_BLOCK (block_list, single_locale);
546 /* Search for the given string. This is a loop because we perhaps
547 got an ordered list of languages to consider for the translation. */
550 /* Make CATEGORYVALUE point to the next element of the list. */
551 while (categoryvalue[0] != '\0' && categoryvalue[0] == ':')
553 if (categoryvalue[0] == '\0')
555 /* The whole contents of CATEGORYVALUE has been searched but
556 no valid entry has been found. We solve this situation
557 by implicitly appending a "C" entry, i.e. no translation
559 single_locale[0] = 'C';
560 single_locale[1] = '\0';
564 char *cp = single_locale;
565 while (categoryvalue[0] != '\0' && categoryvalue[0] != ':')
566 *cp++ = *categoryvalue++;
569 /* When this is a SUID binary we must not allow accessing files
570 outside the dedicated directories. */
571 if (ENABLE_SECURE && IS_PATH_WITH_DIR (single_locale))
572 /* Ingore this entry. */
576 /* If the current locale value is C (or POSIX) we don't load a
577 domain. Return the MSGID. */
578 if (strcmp (single_locale, "C") == 0
579 || strcmp (single_locale, "POSIX") == 0)
581 FREE_BLOCKS (block_list);
582 __libc_rwlock_unlock (_nl_state_lock);
583 __set_errno (saved_errno);
586 /* Use the Germanic plural rule. */
587 : n == 1 ? (char *) msgid1 : (char *) msgid2);
591 /* Find structure describing the message catalog matching the
592 DOMAINNAME and CATEGORY. */
593 domain = _nl_find_domain (dirname, single_locale, xdomainname, binding);
597 retval = _nl_find_msg (domain, binding, msgid1, &retlen);
603 for (cnt = 0; domain->successor[cnt] != NULL; ++cnt)
605 retval = _nl_find_msg (domain->successor[cnt], binding,
610 domain = domain->successor[cnt];
618 /* Found the translation of MSGID1 in domain DOMAIN:
619 starting at RETVAL, RETLEN bytes. */
620 FREE_BLOCKS (block_list);
621 __set_errno (saved_errno);
622 #if defined HAVE_TSEARCH || defined _LIBC
625 /* Create a new entry and add it to the search tree. */
626 struct known_translation_t *newp;
628 newp = (struct known_translation_t *)
629 malloc (offsetof (struct known_translation_t, msgid)
630 + msgid_len + domainname_len + 1);
634 mempcpy (newp->msgid, msgid1, msgid_len);
635 memcpy (newp->domainname, domainname, domainname_len + 1);
636 newp->category = category;
637 newp->counter = _nl_msg_cat_cntr;
638 newp->domain = domain;
639 newp->translation = retval;
640 newp->translation_length = retlen;
642 /* Insert the entry in the search tree. */
643 foundp = (struct known_translation_t **)
644 tsearch (newp, &root, transcmp);
646 || __builtin_expect (*foundp != newp, 0))
647 /* The insert failed. */
653 /* We can update the existing entry. */
654 (*foundp)->counter = _nl_msg_cat_cntr;
655 (*foundp)->domain = domain;
656 (*foundp)->translation = retval;
657 (*foundp)->translation_length = retlen;
660 /* Now deal with plural. */
662 retval = plural_lookup (domain, n, retval, retlen);
664 __libc_rwlock_unlock (_nl_state_lock);
675 _nl_find_msg (domain_file, domainbinding, msgid, lengthp)
676 struct loaded_l10nfile *domain_file;
677 struct binding *domainbinding;
681 struct loaded_domain *domain;
686 if (domain_file->decided == 0)
687 _nl_load_domain (domain_file, domainbinding);
689 if (domain_file->data == NULL)
692 domain = (struct loaded_domain *) domain_file->data;
694 /* Locate the MSGID and its translation. */
695 if (domain->hash_size > 2 && domain->hash_tab != NULL)
697 /* Use the hashing table. */
698 nls_uint32 len = strlen (msgid);
699 nls_uint32 hash_val = hash_string (msgid);
700 nls_uint32 idx = hash_val % domain->hash_size;
701 nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2));
705 nls_uint32 nstr = W (domain->must_swap, domain->hash_tab[idx]);
708 /* Hash table entry is empty. */
711 /* Compare msgid with the original string at index nstr-1.
712 We compare the lengths with >=, not ==, because plural entries
713 are represented by strings with an embedded NUL. */
714 if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) >= len
716 domain->data + W (domain->must_swap,
717 domain->orig_tab[nstr - 1].offset))
724 if (idx >= domain->hash_size - incr)
725 idx -= domain->hash_size - incr;
733 /* Try the default method: binary search in the sorted array of
738 top = domain->nstrings;
743 act = (bottom + top) / 2;
744 cmp_val = strcmp (msgid, (domain->data
745 + W (domain->must_swap,
746 domain->orig_tab[act].offset)));
749 else if (cmp_val > 0)
754 /* No translation was found. */
759 /* The translation was found at index ACT. If we have to convert the
760 string to use a different character set, this is the time. */
761 result = ((char *) domain->data
762 + W (domain->must_swap, domain->trans_tab[act].offset));
763 resultlen = W (domain->must_swap, domain->trans_tab[act].length) + 1;
765 #if defined _LIBC || HAVE_ICONV
766 if (domain->codeset_cntr
767 != (domainbinding != NULL ? domainbinding->codeset_cntr : 0))
769 /* The domain's codeset has changed through bind_textdomain_codeset()
770 since the message catalog was initialized or last accessed. We
771 have to reinitialize the converter. */
772 _nl_free_domain_conv (domain);
773 _nl_init_domain_conv (domain_file, domain, domainbinding);
778 domain->conv != (__gconv_t) -1
781 domain->conv != (iconv_t) -1
786 /* We are supposed to do a conversion. First allocate an
787 appropriate table with the same structure as the table
788 of translations in the file, where we can put the pointers
789 to the converted strings in.
790 There is a slight complication with plural entries. They
791 are represented by consecutive NUL terminated strings. We
792 handle this case by converting RESULTLEN bytes, including
795 if (domain->conv_tab == NULL
796 && ((domain->conv_tab = (char **) calloc (domain->nstrings,
799 /* Mark that we didn't succeed allocating a table. */
800 domain->conv_tab = (char **) -1;
802 if (__builtin_expect (domain->conv_tab == (char **) -1, 0))
803 /* Nothing we can do, no more memory. */
806 if (domain->conv_tab[act] == NULL)
808 /* We haven't used this string so far, so it is not
809 translated yet. Do this now. */
810 /* We use a bit more efficient memory handling.
811 We allocate always larger blocks which get used over
812 time. This is faster than many small allocations. */
813 __libc_lock_define_initialized (static, lock)
814 # define INITIAL_BLOCK_SIZE 4080
815 static unsigned char *freemem;
816 static size_t freemem_size;
818 const unsigned char *inbuf;
819 unsigned char *outbuf;
822 transmem_block_t *transmem_list = NULL;
825 __libc_lock_lock (lock);
827 inbuf = (const unsigned char *) result;
828 outbuf = freemem + sizeof (size_t);
833 transmem_block_t *newmem;
835 size_t non_reversible;
838 if (freemem_size < sizeof (size_t))
841 res = __gconv (domain->conv,
842 &inbuf, inbuf + resultlen,
844 outbuf + freemem_size - sizeof (size_t),
847 if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT)
850 if (res != __GCONV_FULL_OUTPUT)
852 __libc_lock_unlock (lock);
859 const char *inptr = (const char *) inbuf;
860 size_t inleft = resultlen;
861 char *outptr = (char *) outbuf;
864 if (freemem_size < sizeof (size_t))
867 outleft = freemem_size - sizeof (size_t);
868 if (iconv (domain->conv,
869 (ICONV_CONST char **) &inptr, &inleft,
873 outbuf = (unsigned char *) outptr;
878 __libc_lock_unlock (lock);
885 /* We must allocate a new buffer or resize the old one. */
886 if (malloc_count > 0)
889 freemem_size = malloc_count * INITIAL_BLOCK_SIZE;
890 newmem = (transmem_block_t *) realloc (transmem_list,
894 transmem_list = transmem_list->next;
897 struct transmem_list *old = transmem_list;
899 transmem_list = transmem_list->next;
907 freemem_size = INITIAL_BLOCK_SIZE;
908 newmem = (transmem_block_t *) malloc (freemem_size);
910 if (__builtin_expect (newmem == NULL, 0))
914 __libc_lock_unlock (lock);
919 /* Add the block to the list of blocks we have to free
921 newmem->next = transmem_list;
922 transmem_list = newmem;
924 freemem = newmem->data;
925 freemem_size -= offsetof (struct transmem_list, data);
927 transmem_list = newmem;
931 outbuf = freemem + sizeof (size_t);
934 /* We have now in our buffer a converted string. Put this
935 into the table of conversions. */
936 *(size_t *) freemem = outbuf - freemem - sizeof (size_t);
937 domain->conv_tab[act] = (char *) freemem;
938 /* Shrink freemem, but keep it aligned. */
939 freemem_size -= outbuf - freemem;
941 freemem += freemem_size & (alignof (size_t) - 1);
942 freemem_size = freemem_size & ~ (alignof (size_t) - 1);
944 __libc_lock_unlock (lock);
947 /* Now domain->conv_tab[act] contains the translation of all
948 the plural variants. */
949 result = domain->conv_tab[act] + sizeof (size_t);
950 resultlen = *(size_t *) domain->conv_tab[act];
954 /* The result string is converted. */
956 #endif /* _LIBC || HAVE_ICONV */
958 *lengthp = resultlen;
963 /* Look up a plural variant. */
966 plural_lookup (domain, n, translation, translation_len)
967 struct loaded_l10nfile *domain;
969 const char *translation;
970 size_t translation_len;
972 struct loaded_domain *domaindata = (struct loaded_domain *) domain->data;
973 unsigned long int index;
976 index = plural_eval (domaindata->plural, n);
977 if (index >= domaindata->nplurals)
978 /* This should never happen. It means the plural expression and the
979 given maximum value do not match. */
982 /* Skip INDEX strings at TRANSLATION. */
987 p = __rawmemchr (p, '\0');
989 p = strchr (p, '\0');
991 /* And skip over the NUL byte. */
994 if (p >= translation + translation_len)
995 /* This should never happen. It means the plural expression
996 evaluated to a value larger than the number of variants
997 available for MSGID1. */
998 return (char *) translation;
1004 /* Return string representation of locale CATEGORY. */
1007 category_to_name (category)
1016 retval = "LC_COLLATE";
1021 retval = "LC_CTYPE";
1026 retval = "LC_MONETARY";
1031 retval = "LC_NUMERIC";
1041 retval = "LC_MESSAGES";
1046 retval = "LC_RESPONSE";
1051 /* This might not make sense but is perhaps better than any other
1057 /* If you have a better idea for a default value let me know. */
1064 /* Guess value of current locale from value of the environment variables. */
1067 guess_category_value (category, categoryname)
1069 const char *categoryname;
1071 const char *language;
1074 /* The highest priority value is the `LANGUAGE' environment
1075 variable. But we don't use the value if the currently selected
1076 locale is the C locale. This is a GNU extension. */
1077 language = getenv ("LANGUAGE");
1078 if (language != NULL && language[0] == '\0')
1081 /* We have to proceed with the POSIX methods of looking to `LC_ALL',
1082 `LC_xxx', and `LANG'. On some systems this can be done by the
1083 `setlocale' function itself. */
1085 retval = setlocale (category, NULL);
1087 retval = _nl_locale_name (category, categoryname);
1090 /* Ignore LANGUAGE if the locale is set to "C" because
1091 1. "C" locale usually uses the ASCII encoding, and most international
1092 messages use non-ASCII characters. These characters get displayed
1093 as question marks (if using glibc's iconv()) or as invalid 8-bit
1094 characters (because other iconv()s refuse to convert most non-ASCII
1095 characters to ASCII). In any case, the output is ugly.
1096 2. The precise output of some programs in the "C" locale is specified
1097 by POSIX and should not depend on environment variables like
1098 "LANGUAGE". We allow such programs to use gettext(). */
1099 return language != NULL && strcmp (retval, "C") != 0 ? language : retval;
1102 /* @@ begin of epilog @@ */
1104 /* We don't want libintl.a to depend on any other library. So we
1105 avoid the non-standard function stpcpy. In GNU C Library this
1106 function is available, though. Also allow the symbol HAVE_STPCPY
1108 #if !_LIBC && !HAVE_STPCPY
1114 while ((*dest++ = *src++) != '\0')
1120 #if !_LIBC && !HAVE_MEMPCPY
1122 mempcpy (dest, src, n)
1127 return (void *) ((char *) memcpy (dest, src, n) + n);
1133 /* If we want to free all resources we have to do some work at
1135 static void __attribute__ ((unused))
1140 while (_nl_domain_bindings != NULL)
1142 struct binding *oldp = _nl_domain_bindings;
1143 _nl_domain_bindings = _nl_domain_bindings->next;
1144 if (oldp->dirname != _nl_default_dirname)
1145 /* Yes, this is a pointer comparison. */
1146 free (oldp->dirname);
1147 free (oldp->codeset);
1151 if (_nl_current_default_domain != _nl_default_default_domain)
1152 /* Yes, again a pointer comparison. */
1153 free ((char *) _nl_current_default_domain);
1155 /* Remove the search tree with the known translations. */
1156 __tdestroy (root, free);
1159 while (transmem_list != NULL)
1161 old = transmem_list;
1162 transmem_list = transmem_list->next;
1167 text_set_element (__libc_subfreeres, free_mem);