1 /* Implementation of the internal dcigettext function.
2 Copyright (C) 1995-2005, 2006 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 /* Tell glibc's <string.h> to provide a prototype for mempcpy().
21 This must come before <config.h> because <config.h> may include
22 <features.h>, and once <features.h> has been included, it's too late. */
24 # define _GNU_SOURCE 1
31 #include <sys/types.h>
34 # define alloca __builtin_alloca
35 # define HAVE_ALLOCA 1
37 # if defined HAVE_ALLOCA_H || defined _LIBC
55 # define __set_errno(val) errno = (val)
62 #if defined HAVE_UNISTD_H || defined _LIBC
68 #if defined HAVE_SYS_PARAM_H || defined _LIBC
69 # include <sys/param.h>
73 #include "plural-exp.h"
77 # include "libgnuintl.h"
79 #include "hash-string.h"
81 /* Thread safetyness. */
83 # include <bits/libc-lock.h>
85 /* Provide dummy implementation if this is outside glibc. */
86 # define __libc_lock_define_initialized(CLASS, NAME)
87 # define __libc_lock_lock(NAME)
88 # define __libc_lock_unlock(NAME)
89 # define __libc_rwlock_define_initialized(CLASS, NAME)
90 # define __libc_rwlock_rdlock(NAME)
91 # define __libc_rwlock_unlock(NAME)
94 /* Alignment of types. */
95 #if defined __GNUC__ && __GNUC__ >= 2
96 # define alignof(TYPE) __alignof__ (TYPE)
98 # define alignof(TYPE) \
99 ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2)
102 /* The internal variables in the standalone libintl.a must have different
103 names than the internal variables in GNU libc, otherwise programs
104 using libintl.a cannot be linked statically. */
106 # define _nl_default_default_domain libintl_nl_default_default_domain
107 # define _nl_current_default_domain libintl_nl_current_default_domain
108 # define _nl_default_dirname libintl_nl_default_dirname
109 # define _nl_domain_bindings libintl_nl_domain_bindings
112 /* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */
114 # define offsetof(type,ident) ((size_t)&(((type*)0)->ident))
117 /* @@ end of prolog @@ */
120 /* Rename the non ANSI C functions. This is required by the standard
121 because some ANSI C functions will require linking with this object
122 file and the name space must not be polluted. */
123 # define getcwd __getcwd
125 # define stpcpy __stpcpy
127 # define tfind __tfind
129 # if !defined HAVE_GETCWD
131 # define getcwd(buf, max) getwd (buf)
136 static char *stpcpy PARAMS ((char *dest, const char *src));
138 # ifndef HAVE_MEMPCPY
139 static void *mempcpy PARAMS ((void *dest, const void *src, size_t n));
143 /* Amount to increase buffer size by in each try. */
146 /* The following is from pathmax.h. */
147 /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
148 PATH_MAX but might cause redefinition warnings when sys/param.h is
149 later included (as on MORE/BSD 4.3). */
150 #if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)
154 #ifndef _POSIX_PATH_MAX
155 # define _POSIX_PATH_MAX 255
158 #if !defined PATH_MAX && defined _PC_PATH_MAX
159 # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX))
162 /* Don't include sys/param.h if it already has been. */
163 #if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
164 # include <sys/param.h>
167 #if !defined PATH_MAX && defined MAXPATHLEN
168 # define PATH_MAX MAXPATHLEN
172 # define PATH_MAX _POSIX_PATH_MAX
175 /* Whether to support different locales in different threads. */
176 #if defined _LIBC || HAVE_NL_LOCALE_NAME
177 # define HAVE_PER_THREAD_LOCALE
180 /* This is the type used for the search tree where known translations
182 struct known_translation_t
184 /* Domain in which to search. */
185 const char *domainname;
190 #ifdef HAVE_PER_THREAD_LOCALE
191 /* Name of the relevant locale category, or "" for the global locale. */
192 const char *localename;
195 /* State of the catalog counter at the point the string was found. */
198 /* Catalog where the string was found. */
199 struct loaded_l10nfile *domain;
201 /* And finally the translation. */
202 const char *translation;
203 size_t translation_length;
205 /* Pointer to the string in question. */
209 /* Root of the search tree with known translations. We can use this
210 only if the system provides the `tsearch' function family. */
211 #if defined HAVE_TSEARCH || defined _LIBC
217 # define tsearch __tsearch
220 /* Function to compare two entries in the table of known translations. */
221 static int transcmp PARAMS ((const void *p1, const void *p2));
227 const struct known_translation_t *s1;
228 const struct known_translation_t *s2;
231 s1 = (const struct known_translation_t *) p1;
232 s2 = (const struct known_translation_t *) p2;
234 result = strcmp (s1->msgid, s2->msgid);
237 result = strcmp (s1->domainname, s2->domainname);
240 #ifdef HAVE_PER_THREAD_LOCALE
241 result = strcmp (s1->localename, s2->localename);
244 /* We compare the category last (though this is the cheapest
245 operation) since it is hopefully always the same (namely
247 result = s1->category - s2->category;
255 /* Name of the default domain used for gettext(3) prior any call to
256 textdomain(3). The default value for this is "messages". */
257 const char _nl_default_default_domain[] attribute_hidden = "messages";
259 /* Value used as the default domain for gettext(3). */
260 const char *_nl_current_default_domain attribute_hidden
261 = _nl_default_default_domain;
263 /* Contains the default location of the message catalogs. */
266 extern const char _nl_default_dirname[];
267 libc_hidden_proto (_nl_default_dirname)
269 const char _nl_default_dirname[] = LOCALEDIR;
271 libc_hidden_data_def (_nl_default_dirname)
274 /* List with bindings of specific domains created by bindtextdomain()
276 struct binding *_nl_domain_bindings;
278 /* Prototypes for local functions. */
279 static char *plural_lookup PARAMS ((struct loaded_l10nfile *domain,
281 const char *translation,
282 size_t translation_len))
284 static const char *guess_category_value PARAMS ((int category,
285 const char *categoryname))
288 # include "../locale/localeinfo.h"
289 # define category_to_name(category) \
290 _nl_category_names.str + _nl_category_name_idxs[category]
292 static const char *category_to_name PARAMS ((int category)) internal_function;
296 /* For those loosing systems which don't have `alloca' we have to add
297 some additional code emulating it. */
299 /* Nothing has to be done. */
300 # define freea(p) /* nothing */
301 # define ADD_BLOCK(list, address) /* nothing */
302 # define FREE_BLOCKS(list) /* nothing */
307 struct block_list *next;
309 # define ADD_BLOCK(list, addr) \
311 struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \
312 /* If we cannot get a free block we cannot add the new element to \
314 if (newp != NULL) { \
315 newp->address = (addr); \
316 newp->next = (list); \
320 # define FREE_BLOCKS(list) \
322 while (list != NULL) { \
323 struct block_list *old = list; \
325 free (old->address); \
330 # define alloca(size) (malloc (size))
331 # define freea(p) free (p)
332 #endif /* have alloca */
336 /* List of blocks allocated for translations. */
337 typedef struct transmem_list
339 struct transmem_list *next;
342 static struct transmem_list *transmem_list;
344 typedef unsigned char transmem_block_t;
346 #if defined _LIBC || HAVE_ICONV
347 static const char *get_output_charset PARAMS ((struct binding *domainbinding))
352 /* Names for the libintl functions are a problem. They must not clash
353 with existing names and they should follow ANSI C. But this source
354 code is also used in GNU C Library where the names have a __
355 prefix. So we have to make a difference here. */
357 # define DCIGETTEXT __dcigettext
359 # define DCIGETTEXT libintl_dcigettext
362 /* Lock variable to protect the global data in the gettext implementation. */
364 __libc_rwlock_define_initialized (, _nl_state_lock attribute_hidden)
367 /* Checking whether the binaries runs SUID must be done and glibc provides
368 easier methods therefore we make a difference here. */
370 # define ENABLE_SECURE __libc_enable_secure
371 # define DETERMINE_SECURE
379 # ifndef HAVE_GETEUID
380 # define geteuid() getuid()
382 # ifndef HAVE_GETEGID
383 # define getegid() getgid()
385 static int enable_secure;
386 # define ENABLE_SECURE (enable_secure == 1)
387 # define DETERMINE_SECURE \
388 if (enable_secure == 0) \
390 if (getuid () != geteuid () || getgid () != getegid ()) \
393 enable_secure = -1; \
397 /* Get the function to evaluate the plural expression. */
398 #include "plural-eval.c"
400 /* Look up MSGID in the DOMAINNAME message catalog for the current
401 CATEGORY locale and, if PLURAL is nonzero, search over string
402 depending on the plural form determined by N. */
404 DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category)
405 const char *domainname;
413 struct block_list *block_list = NULL;
415 struct loaded_l10nfile *domain;
416 struct binding *binding;
417 const char *categoryname;
418 const char *categoryvalue;
419 char *dirname, *xdomainname;
424 #if defined HAVE_TSEARCH || defined _LIBC
425 struct known_translation_t *search;
426 struct known_translation_t **foundp = NULL;
428 # ifdef HAVE_PER_THREAD_LOCALE
429 const char *localename;
432 size_t domainname_len;
434 /* If no real MSGID is given return NULL. */
439 if (category < 0 || category >= __LC_LAST || category == LC_ALL)
443 /* Use the Germanic plural rule. */
444 : n == 1 ? (char *) msgid1 : (char *) msgid2);
447 __libc_rwlock_rdlock (_nl_state_lock);
449 /* If DOMAINNAME is NULL, we are interested in the default domain. If
450 CATEGORY is not LC_MESSAGES this might not make much sense but the
451 definition left this undefined. */
452 if (domainname == NULL)
453 domainname = _nl_current_default_domain;
455 #if defined HAVE_TSEARCH || defined _LIBC
456 msgid_len = strlen (msgid1) + 1;
458 /* Try to find the translation among those which we found at
460 search = (struct known_translation_t *)
461 alloca (offsetof (struct known_translation_t, msgid) + msgid_len);
462 memcpy (search->msgid, msgid1, msgid_len);
463 search->domainname = domainname;
464 search->category = category;
465 # ifdef HAVE_PER_THREAD_LOCALE
467 localename = __current_locale_name (category);
469 search->localename = localename;
472 /* Since tfind/tsearch manage a balanced tree, concurrent tfind and
473 tsearch calls can be fatal. */
474 __libc_rwlock_define_initialized (static, tree_lock);
475 __libc_rwlock_rdlock (tree_lock);
477 foundp = (struct known_translation_t **) tfind (search, &root, transcmp);
479 __libc_rwlock_unlock (tree_lock);
482 if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
484 /* Now deal with plural. */
486 retval = plural_lookup ((*foundp)->domain, n, (*foundp)->translation,
487 (*foundp)->translation_length);
489 retval = (char *) (*foundp)->translation;
491 __libc_rwlock_unlock (_nl_state_lock);
496 /* Preserve the `errno' value. */
499 /* See whether this is a SUID binary or not. */
502 /* First find matching binding. */
503 for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
505 int compare = strcmp (domainname, binding->domainname);
511 /* It is not in the list. */
518 dirname = (char *) _nl_default_dirname;
519 else if (binding->dirname[0] == '/')
520 dirname = binding->dirname;
523 /* We have a relative path. Make it absolute now. */
524 size_t dirname_len = strlen (binding->dirname) + 1;
528 path_max = (unsigned int) PATH_MAX;
529 path_max += 2; /* The getcwd docs say to do this. */
533 dirname = (char *) alloca (path_max + dirname_len);
534 ADD_BLOCK (block_list, dirname);
537 ret = getcwd (dirname, path_max);
538 if (ret != NULL || errno != ERANGE)
541 path_max += path_max / 2;
542 path_max += PATH_INCR;
547 /* We cannot get the current working directory. Don't signal an
548 error but simply return the default string. */
549 FREE_BLOCKS (block_list);
550 __libc_rwlock_unlock (_nl_state_lock);
551 __set_errno (saved_errno);
554 /* Use the Germanic plural rule. */
555 : n == 1 ? (char *) msgid1 : (char *) msgid2);
558 stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname);
561 /* Now determine the symbolic name of CATEGORY and its value. */
562 categoryname = category_to_name (category);
563 categoryvalue = guess_category_value (category, categoryname);
565 domainname_len = strlen (domainname);
566 xdomainname = (char *) alloca (strlen (categoryname)
567 + domainname_len + 5);
568 ADD_BLOCK (block_list, xdomainname);
570 stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"),
571 domainname, domainname_len),
574 /* Creating working area. */
575 single_locale = (char *) alloca (strlen (categoryvalue) + 1);
576 ADD_BLOCK (block_list, single_locale);
579 /* Search for the given string. This is a loop because we perhaps
580 got an ordered list of languages to consider for the translation. */
583 /* Make CATEGORYVALUE point to the next element of the list. */
584 while (categoryvalue[0] != '\0' && categoryvalue[0] == ':')
586 if (categoryvalue[0] == '\0')
588 /* The whole contents of CATEGORYVALUE has been searched but
589 no valid entry has been found. We solve this situation
590 by implicitly appending a "C" entry, i.e. no translation
592 single_locale[0] = 'C';
593 single_locale[1] = '\0';
597 char *cp = single_locale;
598 while (categoryvalue[0] != '\0' && categoryvalue[0] != ':')
599 *cp++ = *categoryvalue++;
602 /* When this is a SUID binary we must not allow accessing files
603 outside the dedicated directories. */
604 if (ENABLE_SECURE && strchr (single_locale, '/') != NULL)
605 /* Ingore this entry. */
609 /* If the current locale value is C (or POSIX) we don't load a
610 domain. Return the MSGID. */
611 if (strcmp (single_locale, "C") == 0
612 || strcmp (single_locale, "POSIX") == 0)
614 FREE_BLOCKS (block_list);
615 __libc_rwlock_unlock (_nl_state_lock);
616 __set_errno (saved_errno);
619 /* Use the Germanic plural rule. */
620 : n == 1 ? (char *) msgid1 : (char *) msgid2);
624 /* Find structure describing the message catalog matching the
625 DOMAINNAME and CATEGORY. */
626 domain = _nl_find_domain (dirname, single_locale, xdomainname, binding);
630 retval = _nl_find_msg (domain, binding, msgid1, 1, &retlen);
636 for (cnt = 0; domain->successor[cnt] != NULL; ++cnt)
638 retval = _nl_find_msg (domain->successor[cnt], binding,
643 domain = domain->successor[cnt];
651 /* Found the translation of MSGID1 in domain DOMAIN:
652 starting at RETVAL, RETLEN bytes. */
653 FREE_BLOCKS (block_list);
654 #if defined HAVE_TSEARCH || defined _LIBC
657 /* Create a new entry and add it to the search tree. */
659 struct known_translation_t *newp;
661 size = offsetof (struct known_translation_t, msgid)
662 + msgid_len + domainname_len + 1;
663 # ifdef HAVE_PER_THREAD_LOCALE
664 size += strlen (localename) + 1;
666 newp = (struct known_translation_t *) malloc (size);
669 char *new_domainname;
670 # ifdef HAVE_PER_THREAD_LOCALE
671 char *new_localename;
674 new_domainname = mempcpy (newp->msgid, msgid1, msgid_len);
675 memcpy (new_domainname, domainname, domainname_len + 1);
676 # ifdef HAVE_PER_THREAD_LOCALE
677 new_localename = new_domainname + domainname_len + 1;
678 strcpy (new_localename, localename);
680 newp->domainname = new_domainname;
681 newp->category = category;
682 # ifdef HAVE_PER_THREAD_LOCALE
683 newp->localename = new_localename;
685 newp->counter = _nl_msg_cat_cntr;
686 newp->domain = domain;
687 newp->translation = retval;
688 newp->translation_length = retlen;
690 __libc_rwlock_wrlock (tree_lock);
692 /* Insert the entry in the search tree. */
693 foundp = (struct known_translation_t **)
694 tsearch (newp, &root, transcmp);
696 __libc_rwlock_unlock (tree_lock);
699 || __builtin_expect (*foundp != newp, 0))
700 /* The insert failed. */
706 /* We can update the existing entry. */
707 (*foundp)->counter = _nl_msg_cat_cntr;
708 (*foundp)->domain = domain;
709 (*foundp)->translation = retval;
710 (*foundp)->translation_length = retlen;
713 __set_errno (saved_errno);
715 /* Now deal with plural. */
717 retval = plural_lookup (domain, n, retval, retlen);
719 __libc_rwlock_unlock (_nl_state_lock);
730 _nl_find_msg (domain_file, domainbinding, msgid, convert, lengthp)
731 struct loaded_l10nfile *domain_file;
732 struct binding *domainbinding;
737 struct loaded_domain *domain;
743 if (domain_file->decided <= 0)
744 _nl_load_domain (domain_file, domainbinding);
746 if (domain_file->data == NULL)
749 domain = (struct loaded_domain *) domain_file->data;
751 nstrings = domain->nstrings;
753 /* Locate the MSGID and its translation. */
754 if (domain->hash_tab != NULL)
756 /* Use the hashing table. */
757 nls_uint32 len = strlen (msgid);
758 nls_uint32 hash_val = __hash_string (msgid);
759 nls_uint32 idx = hash_val % domain->hash_size;
760 nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2));
765 W (domain->must_swap_hash_tab, domain->hash_tab[idx]);
768 /* Hash table entry is empty. */
773 /* Compare msgid with the original string at index nstr.
774 We compare the lengths with >=, not ==, because plural entries
775 are represented by strings with an embedded NUL. */
777 ? W (domain->must_swap, domain->orig_tab[nstr].length) >= len
779 domain->data + W (domain->must_swap,
780 domain->orig_tab[nstr].offset))
782 : domain->orig_sysdep_tab[nstr - nstrings].length > len
784 domain->orig_sysdep_tab[nstr - nstrings].pointer)
791 if (idx >= domain->hash_size - incr)
792 idx -= domain->hash_size - incr;
800 /* Try the default method: binary search in the sorted array of
810 act = (bottom + top) / 2;
811 cmp_val = strcmp (msgid, (domain->data
812 + W (domain->must_swap,
813 domain->orig_tab[act].offset)));
816 else if (cmp_val > 0)
821 /* No translation was found. */
826 /* The translation was found at index ACT. If we have to convert the
827 string to use a different character set, this is the time. */
831 (domain->data + W (domain->must_swap, domain->trans_tab[act].offset));
832 resultlen = W (domain->must_swap, domain->trans_tab[act].length) + 1;
836 result = (char *) domain->trans_sysdep_tab[act - nstrings].pointer;
837 resultlen = domain->trans_sysdep_tab[act - nstrings].length;
840 #if defined _LIBC || HAVE_ICONV
843 /* We are supposed to do a conversion. */
844 const char *encoding = get_output_charset (domainbinding);
846 /* Search whether a table with converted translations for this
847 encoding has already been allocated. */
848 size_t nconversions = domain->nconversions;
849 struct converted_domain *convd = NULL;
852 for (i = nconversions; i > 0; )
855 if (strcmp (domain->conversions[i].encoding, encoding) == 0)
857 convd = &domain->conversions[i];
864 /* Allocate a table for the converted translations for this
866 struct converted_domain *new_conversions =
867 (struct converted_domain *)
868 (domain->conversions != NULL
869 ? realloc (domain->conversions,
870 (nconversions + 1) * sizeof (struct converted_domain))
871 : malloc ((nconversions + 1) * sizeof (struct converted_domain)));
873 if (__builtin_expect (new_conversions == NULL, 0))
874 /* Nothing we can do, no more memory. */
876 domain->conversions = new_conversions;
878 /* Copy the 'encoding' string to permanent storage. */
879 encoding = strdup (encoding);
880 if (__builtin_expect (encoding == NULL, 0))
881 /* Nothing we can do, no more memory. */
884 convd = &new_conversions[nconversions];
885 convd->encoding = encoding;
887 /* Find out about the character set the file is encoded with.
888 This can be found (in textual form) in the entry "". If this
889 entry does not exist or if this does not contain the 'charset='
890 information, we will assume the charset matches the one the
891 current locale and we don't have to perform any conversion. */
893 convd->conv = (__gconv_t) -1;
896 convd->conv = (iconv_t) -1;
903 /* Get the header entry. This is a recursion, but it doesn't
904 reallocate domain->conversions because we pass convert = 0. */
906 _nl_find_msg (domain_file, domainbinding, "", 0, &nullentrylen);
908 if (nullentry != NULL)
910 const char *charsetstr;
912 charsetstr = strstr (nullentry, "charset=");
913 if (charsetstr != NULL)
917 const char *outcharset;
919 charsetstr += strlen ("charset=");
920 len = strcspn (charsetstr, " \t\n");
922 charset = (char *) alloca (len + 1);
923 # if defined _LIBC || HAVE_MEMPCPY
924 *((char *) mempcpy (charset, charsetstr, len)) = '\0';
926 memcpy (charset, charsetstr, len);
930 outcharset = encoding;
933 /* We always want to use transliteration. */
934 outcharset = norm_add_slashes (outcharset, "TRANSLIT");
935 charset = norm_add_slashes (charset, "");
936 if (__gconv_open (outcharset, charset, &convd->conv,
939 convd->conv = (__gconv_t) -1;
942 /* When using GNU libc >= 2.2 or GNU libiconv >= 1.5,
943 we want to use transliteration. */
944 # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2 \
945 || _LIBICONV_VERSION >= 0x0105
946 if (strchr (outcharset, '/') == NULL)
950 len = strlen (outcharset);
951 tmp = (char *) alloca (len + 10 + 1);
952 memcpy (tmp, outcharset, len);
953 memcpy (tmp + len, "//TRANSLIT", 10 + 1);
956 convd->conv = iconv_open (outcharset, charset);
962 convd->conv = iconv_open (outcharset, charset);
970 convd->conv_tab = NULL;
971 /* Here domain->conversions is still == new_conversions. */
972 domain->nconversions++;
977 convd->conv != (__gconv_t) -1
980 convd->conv != (iconv_t) -1
985 /* We are supposed to do a conversion. First allocate an
986 appropriate table with the same structure as the table
987 of translations in the file, where we can put the pointers
988 to the converted strings in.
989 There is a slight complication with plural entries. They
990 are represented by consecutive NUL terminated strings. We
991 handle this case by converting RESULTLEN bytes, including
994 if (convd->conv_tab == NULL
995 && ((convd->conv_tab =
996 (char **) calloc (nstrings + domain->n_sysdep_strings,
999 /* Mark that we didn't succeed allocating a table. */
1000 convd->conv_tab = (char **) -1;
1002 if (__builtin_expect (convd->conv_tab == (char **) -1, 0))
1003 /* Nothing we can do, no more memory. */
1006 if (convd->conv_tab[act] == NULL)
1008 /* We haven't used this string so far, so it is not
1009 translated yet. Do this now. */
1010 /* We use a bit more efficient memory handling.
1011 We allocate always larger blocks which get used over
1012 time. This is faster than many small allocations. */
1013 __libc_lock_define_initialized (static, lock)
1014 # define INITIAL_BLOCK_SIZE 4080
1015 static unsigned char *freemem;
1016 static size_t freemem_size;
1018 const unsigned char *inbuf;
1019 unsigned char *outbuf;
1022 transmem_block_t *transmem_list = NULL;
1025 __libc_lock_lock (lock);
1027 inbuf = (const unsigned char *) result;
1028 outbuf = freemem + sizeof (size_t);
1033 transmem_block_t *newmem;
1035 size_t non_reversible;
1038 if (freemem_size < sizeof (size_t))
1039 goto resize_freemem;
1041 res = __gconv (convd->conv,
1042 &inbuf, inbuf + resultlen,
1044 outbuf + freemem_size - sizeof (size_t),
1047 if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT)
1050 if (res != __GCONV_FULL_OUTPUT)
1052 __libc_lock_unlock (lock);
1056 inbuf = (const unsigned char *) result;
1059 const char *inptr = (const char *) inbuf;
1060 size_t inleft = resultlen;
1061 char *outptr = (char *) outbuf;
1064 if (freemem_size < sizeof (size_t))
1065 goto resize_freemem;
1067 outleft = freemem_size - sizeof (size_t);
1068 if (iconv (convd->conv,
1069 (ICONV_CONST char **) &inptr, &inleft,
1073 outbuf = (unsigned char *) outptr;
1078 __libc_lock_unlock (lock);
1085 /* We must allocate a new buffer or resize the old one. */
1086 if (malloc_count > 0)
1089 freemem_size = malloc_count * INITIAL_BLOCK_SIZE;
1090 newmem = (transmem_block_t *) realloc (transmem_list,
1094 transmem_list = transmem_list->next;
1097 struct transmem_list *old = transmem_list;
1099 transmem_list = transmem_list->next;
1107 freemem_size = INITIAL_BLOCK_SIZE;
1108 newmem = (transmem_block_t *) malloc (freemem_size);
1110 if (__builtin_expect (newmem == NULL, 0))
1114 __libc_lock_unlock (lock);
1119 /* Add the block to the list of blocks we have to free
1121 newmem->next = transmem_list;
1122 transmem_list = newmem;
1124 freemem = (unsigned char *) newmem->data;
1125 freemem_size -= offsetof (struct transmem_list, data);
1127 transmem_list = newmem;
1131 outbuf = freemem + sizeof (size_t);
1134 /* We have now in our buffer a converted string. Put this
1135 into the table of conversions. */
1136 *(size_t *) freemem = outbuf - freemem - sizeof (size_t);
1137 convd->conv_tab[act] = (char *) freemem;
1138 /* Shrink freemem, but keep it aligned. */
1139 freemem_size -= outbuf - freemem;
1141 freemem += freemem_size & (alignof (size_t) - 1);
1142 freemem_size = freemem_size & ~ (alignof (size_t) - 1);
1144 __libc_lock_unlock (lock);
1147 /* Now convd->conv_tab[act] contains the translation of all
1148 the plural variants. */
1149 result = convd->conv_tab[act] + sizeof (size_t);
1150 resultlen = *(size_t *) convd->conv_tab[act];
1155 /* The result string is converted. */
1157 #endif /* _LIBC || HAVE_ICONV */
1159 *lengthp = resultlen;
1164 /* Look up a plural variant. */
1167 plural_lookup (domain, n, translation, translation_len)
1168 struct loaded_l10nfile *domain;
1169 unsigned long int n;
1170 const char *translation;
1171 size_t translation_len;
1173 struct loaded_domain *domaindata = (struct loaded_domain *) domain->data;
1174 unsigned long int index;
1177 index = plural_eval (domaindata->plural, n);
1178 if (index >= domaindata->nplurals)
1179 /* This should never happen. It means the plural expression and the
1180 given maximum value do not match. */
1183 /* Skip INDEX strings at TRANSLATION. */
1188 p = __rawmemchr (p, '\0');
1190 p = strchr (p, '\0');
1192 /* And skip over the NUL byte. */
1195 if (p >= translation + translation_len)
1196 /* This should never happen. It means the plural expression
1197 evaluated to a value larger than the number of variants
1198 available for MSGID1. */
1199 return (char *) translation;
1205 /* Return string representation of locale CATEGORY. */
1208 category_to_name (category)
1217 retval = "LC_COLLATE";
1222 retval = "LC_CTYPE";
1227 retval = "LC_MONETARY";
1232 retval = "LC_NUMERIC";
1242 retval = "LC_MESSAGES";
1247 retval = "LC_RESPONSE";
1252 /* This might not make sense but is perhaps better than any other
1258 /* If you have a better idea for a default value let me know. */
1266 /* Guess value of current locale from value of the environment variables. */
1269 guess_category_value (category, categoryname)
1271 const char *categoryname;
1273 const char *language;
1276 /* The highest priority value is the `LANGUAGE' environment
1277 variable. But we don't use the value if the currently selected
1278 locale is the C locale. This is a GNU extension. */
1279 language = getenv ("LANGUAGE");
1280 if (language != NULL && language[0] == '\0')
1283 /* We have to proceed with the POSIX methods of looking to `LC_ALL',
1284 `LC_xxx', and `LANG'. On some systems this can be done by the
1285 `setlocale' function itself. */
1287 retval = __current_locale_name (category);
1289 retval = _nl_locale_name (category, categoryname);
1292 return language != NULL && strcmp (retval, "C") != 0 ? language : retval;
1295 #if defined _LIBC || HAVE_ICONV
1296 /* Returns the output charset. */
1299 get_output_charset (domainbinding)
1300 struct binding *domainbinding;
1302 /* The output charset should normally be determined by the locale. But
1303 sometimes the locale is not used or not correctly set up, so we provide
1304 a possibility for the user to override this: the OUTPUT_CHARSET
1305 environment variable. Moreover, the value specified through
1306 bind_textdomain_codeset overrides both. */
1307 if (domainbinding != NULL && domainbinding->codeset != NULL)
1308 return domainbinding->codeset;
1311 /* For speed reasons, we look at the value of OUTPUT_CHARSET only
1312 once. This is a user variable that is not supposed to change
1313 during a program run. */
1314 static char *output_charset_cache;
1315 static int output_charset_cached;
1317 if (!output_charset_cached)
1319 const char *value = getenv ("OUTPUT_CHARSET");
1321 if (value != NULL && value[0] != '\0')
1323 size_t len = strlen (value) + 1;
1324 char *value_copy = (char *) malloc (len);
1326 if (value_copy != NULL)
1327 memcpy (value_copy, value, len);
1328 output_charset_cache = value_copy;
1330 output_charset_cached = 1;
1333 if (output_charset_cache != NULL)
1334 return output_charset_cache;
1338 return _NL_CURRENT (LC_CTYPE, CODESET);
1341 extern const char *locale_charset PARAMS ((void);
1342 return locale_charset ();
1350 /* @@ begin of epilog @@ */
1352 /* We don't want libintl.a to depend on any other library. So we
1353 avoid the non-standard function stpcpy. In GNU C Library this
1354 function is available, though. Also allow the symbol HAVE_STPCPY
1356 #if !_LIBC && !HAVE_STPCPY
1362 while ((*dest++ = *src++) != '\0')
1368 #if !_LIBC && !HAVE_MEMPCPY
1370 mempcpy (dest, src, n)
1375 return (void *) ((char *) memcpy (dest, src, n) + n);
1381 /* If we want to free all resources we have to do some work at
1383 libc_freeres_fn (free_mem)
1387 while (_nl_domain_bindings != NULL)
1389 struct binding *oldp = _nl_domain_bindings;
1390 _nl_domain_bindings = _nl_domain_bindings->next;
1391 if (oldp->dirname != _nl_default_dirname)
1392 /* Yes, this is a pointer comparison. */
1393 free (oldp->dirname);
1394 free (oldp->codeset);
1398 if (_nl_current_default_domain != _nl_default_default_domain)
1399 /* Yes, again a pointer comparison. */
1400 free ((char *) _nl_current_default_domain);
1402 /* Remove the search tree with the known translations. */
1403 __tdestroy (root, free);
1406 while (transmem_list != NULL)
1408 old = transmem_list;
1409 transmem_list = transmem_list->next;