| /* Implementation of the dcgettext(3) function |
| Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software Foundation, |
| Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include <sys/types.h> |
| |
| #ifdef __GNUC__ |
| # define alloca __builtin_alloca |
| # define HAVE_ALLOCA 1 |
| #else |
| # if defined HAVE_ALLOCA_H || defined _LIBC |
| # include <alloca.h> |
| # else |
| # ifdef _AIX |
| #pragma alloca |
| # else |
| # ifndef alloca |
| char *alloca (); |
| # endif |
| # endif |
| # endif |
| #endif |
| |
| #include <errno.h> |
| #ifndef errno |
| extern int errno; |
| #endif |
| #ifndef __set_errno |
| # define __set_errno(val) errno = (val) |
| #endif |
| |
| #if defined STDC_HEADERS || defined _LIBC |
| # include <stdlib.h> |
| #else |
| char *getenv (); |
| # ifdef HAVE_MALLOC_H |
| # include <malloc.h> |
| # else |
| void free (); |
| # endif |
| #endif |
| |
| #if defined HAVE_STRING_H || defined _LIBC |
| # ifndef _GNU_SOURCE |
| # define _GNU_SOURCE 1 |
| # endif |
| # include <string.h> |
| #else |
| # include <strings.h> |
| #endif |
| #if !HAVE_STRCHR && !defined _LIBC |
| # ifndef strchr |
| # define strchr index |
| # endif |
| #endif |
| |
| #if defined HAVE_UNISTD_H || defined _LIBC |
| # include <unistd.h> |
| #endif |
| |
| #include "gettext.h" |
| #include "gettextP.h" |
| #ifdef _LIBC |
| # include <libintl.h> |
| #else |
| # include "libgettext.h" |
| #endif |
| #include "hash-string.h" |
| |
| /* @@ end of prolog @@ */ |
| |
| #ifdef _LIBC |
| /* Rename the non ANSI C functions. This is required by the standard |
| because some ANSI C functions will require linking with this object |
| file and the name space must not be polluted. */ |
| # define getcwd __getcwd |
| # define stpcpy __stpcpy |
| #else |
| # if !defined HAVE_GETCWD |
| char *getwd (); |
| # define getcwd(buf, max) getwd (buf) |
| # else |
| char *getcwd (); |
| # endif |
| # ifndef HAVE_STPCPY |
| static char *stpcpy PARAMS ((char *dest, const char *src)); |
| # endif |
| #endif |
| |
| /* Amount to increase buffer size by in each try. */ |
| #define PATH_INCR 32 |
| |
| /* The following is from pathmax.h. */ |
| /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define |
| PATH_MAX but might cause redefinition warnings when sys/param.h is |
| later included (as on MORE/BSD 4.3). */ |
| #if defined(_POSIX_VERSION) || (defined(HAVE_LIMITS_H) && !defined(__GNUC__)) |
| # include <limits.h> |
| #endif |
| |
| #ifndef _POSIX_PATH_MAX |
| # define _POSIX_PATH_MAX 255 |
| #endif |
| |
| #if !defined(PATH_MAX) && defined(_PC_PATH_MAX) |
| # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX)) |
| #endif |
| |
| /* Don't include sys/param.h if it already has been. */ |
| #if defined(HAVE_SYS_PARAM_H) && !defined(PATH_MAX) && !defined(MAXPATHLEN) |
| # include <sys/param.h> |
| #endif |
| |
| #if !defined(PATH_MAX) && defined(MAXPATHLEN) |
| # define PATH_MAX MAXPATHLEN |
| #endif |
| |
| #ifndef PATH_MAX |
| # define PATH_MAX _POSIX_PATH_MAX |
| #endif |
| |
| /* XPG3 defines the result of `setlocale (category, NULL)' as: |
| ``Directs `setlocale()' to query `category' and return the current |
| setting of `local'.'' |
| However it does not specify the exact format. And even worse: POSIX |
| defines this not at all. So we can use this feature only on selected |
| system (e.g. those using GNU C Library). */ |
| #ifdef _LIBC |
| # define HAVE_LOCALE_NULL |
| #endif |
| |
| /* Name of the default domain used for gettext(3) prior any call to |
| textdomain(3). The default value for this is "messages". */ |
| const char _nl_default_default_domain[] = "messages"; |
| |
| /* Value used as the default domain for gettext(3). */ |
| const char *_nl_current_default_domain = _nl_default_default_domain; |
| |
| /* Contains the default location of the message catalogs. */ |
| const char _nl_default_dirname[] = GNULOCALEDIR; |
| |
| /* List with bindings of specific domains created by bindtextdomain() |
| calls. */ |
| struct binding *_nl_domain_bindings; |
| |
| /* Prototypes for local functions. */ |
| static char *find_msg PARAMS ((struct loaded_l10nfile *domain_file, |
| const char *msgid)); |
| static const char *category_to_name PARAMS ((int category)); |
| static const char *guess_category_value PARAMS ((int category, |
| const char *categoryname)); |
| |
| |
| /* For those loosing systems which don't have `alloca' we have to add |
| some additional code emulating it. */ |
| #ifdef HAVE_ALLOCA |
| /* Nothing has to be done. */ |
| # define ADD_BLOCK(list, address) /* nothing */ |
| # define FREE_BLOCKS(list) /* nothing */ |
| #else |
| struct block_list |
| { |
| void *address; |
| struct block_list *next; |
| }; |
| # define ADD_BLOCK(list, addr) \ |
| do { \ |
| struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \ |
| /* If we cannot get a free block we cannot add the new element to \ |
| the list. */ \ |
| if (newp != NULL) { \ |
| newp->address = (addr); \ |
| newp->next = (list); \ |
| (list) = newp; \ |
| } \ |
| } while (0) |
| # define FREE_BLOCKS(list) \ |
| do { \ |
| while (list != NULL) { \ |
| struct block_list *old = list; \ |
| list = list->next; \ |
| free (old); \ |
| } \ |
| } while (0) |
| # undef alloca |
| # define alloca(size) (malloc (size)) |
| #endif /* have alloca */ |
| |
| |
| /* Names for the libintl functions are a problem. They must not clash |
| with existing names and they should follow ANSI C. But this source |
| code is also used in GNU C Library where the names have a __ |
| prefix. So we have to make a difference here. */ |
| #ifdef _LIBC |
| # define DCGETTEXT __dcgettext |
| #else |
| # define DCGETTEXT dcgettext__ |
| #endif |
| |
| /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY |
| locale. */ |
| char * |
| DCGETTEXT (domainname, msgid, category) |
| const char *domainname; |
| const char *msgid; |
| int category; |
| { |
| #ifndef HAVE_ALLOCA |
| struct block_list *block_list = NULL; |
| #endif |
| struct loaded_l10nfile *domain; |
| struct binding *binding; |
| const char *categoryname; |
| const char *categoryvalue; |
| char *dirname, *xdomainname; |
| char *single_locale; |
| char *retval; |
| int saved_errno = errno; |
| |
| /* If no real MSGID is given return NULL. */ |
| if (msgid == NULL) |
| return NULL; |
| |
| /* If DOMAINNAME is NULL, we are interested in the default domain. If |
| CATEGORY is not LC_MESSAGES this might not make much sense but the |
| defintion left this undefined. */ |
| if (domainname == NULL) |
| domainname = _nl_current_default_domain; |
| |
| /* First find matching binding. */ |
| for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) |
| { |
| int compare = strcmp (domainname, binding->domainname); |
| if (compare == 0) |
| /* We found it! */ |
| break; |
| if (compare < 0) |
| { |
| /* It is not in the list. */ |
| binding = NULL; |
| break; |
| } |
| } |
| |
| if (binding == NULL) |
| dirname = (char *) _nl_default_dirname; |
| else if (binding->dirname[0] == '/') |
| dirname = binding->dirname; |
| else |
| { |
| /* We have a relative path. Make it absolute now. */ |
| size_t dirname_len = strlen (binding->dirname) + 1; |
| size_t path_max; |
| char *ret; |
| |
| path_max = (unsigned) PATH_MAX; |
| path_max += 2; /* The getcwd docs say to do this. */ |
| |
| dirname = (char *) alloca (path_max + dirname_len); |
| ADD_BLOCK (block_list, dirname); |
| |
| __set_errno (0); |
| while ((ret = getcwd (dirname, path_max)) == NULL && errno == ERANGE) |
| { |
| path_max += PATH_INCR; |
| dirname = (char *) alloca (path_max + dirname_len); |
| ADD_BLOCK (block_list, dirname); |
| __set_errno (0); |
| } |
| |
| if (ret == NULL) |
| { |
| /* We cannot get the current working directory. Don't signal an |
| error but simply return the default string. */ |
| FREE_BLOCKS (block_list); |
| __set_errno (saved_errno); |
| return (char *) msgid; |
| } |
| |
| stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname); |
| } |
| |
| /* Now determine the symbolic name of CATEGORY and its value. */ |
| categoryname = category_to_name (category); |
| categoryvalue = guess_category_value (category, categoryname); |
| |
| xdomainname = (char *) alloca (strlen (categoryname) |
| + strlen (domainname) + 5); |
| ADD_BLOCK (block_list, xdomainname); |
| |
| stpcpy (stpcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"), |
| domainname), |
| ".mo"); |
| |
| /* Creating working area. */ |
| single_locale = (char *) alloca (strlen (categoryvalue) + 1); |
| ADD_BLOCK (block_list, single_locale); |
| |
| |
| /* Search for the given string. This is a loop because we perhaps |
| got an ordered list of languages to consider for th translation. */ |
| while (1) |
| { |
| /* Make CATEGORYVALUE point to the next element of the list. */ |
| while (categoryvalue[0] != '\0' && categoryvalue[0] == ':') |
| ++categoryvalue; |
| if (categoryvalue[0] == '\0') |
| { |
| /* The whole contents of CATEGORYVALUE has been searched but |
| no valid entry has been found. We solve this situation |
| by implicitly appending a "C" entry, i.e. no translation |
| will take place. */ |
| single_locale[0] = 'C'; |
| single_locale[1] = '\0'; |
| } |
| else |
| { |
| char *cp = single_locale; |
| while (categoryvalue[0] != '\0' && categoryvalue[0] != ':') |
| *cp++ = *categoryvalue++; |
| *cp = '\0'; |
| } |
| |
| /* If the current locale value is C (or POSIX) we don't load a |
| domain. Return the MSGID. */ |
| if (strcmp (single_locale, "C") == 0 |
| || strcmp (single_locale, "POSIX") == 0) |
| { |
| FREE_BLOCKS (block_list); |
| __set_errno (saved_errno); |
| return (char *) msgid; |
| } |
| |
| |
| /* Find structure describing the message catalog matching the |
| DOMAINNAME and CATEGORY. */ |
| domain = _nl_find_domain (dirname, single_locale, xdomainname); |
| |
| if (domain != NULL) |
| { |
| retval = find_msg (domain, msgid); |
| |
| if (retval == NULL) |
| { |
| int cnt; |
| |
| for (cnt = 0; domain->successor[cnt] != NULL; ++cnt) |
| { |
| retval = find_msg (domain->successor[cnt], msgid); |
| |
| if (retval != NULL) |
| break; |
| } |
| } |
| |
| if (retval != NULL) |
| { |
| FREE_BLOCKS (block_list); |
| __set_errno (saved_errno); |
| return retval; |
| } |
| } |
| } |
| /* NOTREACHED */ |
| } |
| |
| #ifdef _LIBC |
| /* Alias for function name in GNU C Library. */ |
| weak_alias (__dcgettext, dcgettext); |
| #endif |
| |
| |
| static char * |
| find_msg (domain_file, msgid) |
| struct loaded_l10nfile *domain_file; |
| const char *msgid; |
| { |
| size_t top, act, bottom; |
| struct loaded_domain *domain; |
| |
| if (domain_file->decided == 0) |
| _nl_load_domain (domain_file); |
| |
| if (domain_file->data == NULL) |
| return NULL; |
| |
| domain = (struct loaded_domain *) domain_file->data; |
| |
| /* Locate the MSGID and its translation. */ |
| if (domain->hash_size > 2 && domain->hash_tab != NULL) |
| { |
| /* Use the hashing table. */ |
| nls_uint32 len = strlen (msgid); |
| nls_uint32 hash_val = hash_string (msgid); |
| nls_uint32 idx = hash_val % domain->hash_size; |
| nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2)); |
| nls_uint32 nstr = W (domain->must_swap, domain->hash_tab[idx]); |
| |
| if (nstr == 0) |
| /* Hash table entry is empty. */ |
| return NULL; |
| |
| if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len |
| && strcmp (msgid, |
| domain->data + W (domain->must_swap, |
| domain->orig_tab[nstr - 1].offset)) == 0) |
| return (char *) domain->data + W (domain->must_swap, |
| domain->trans_tab[nstr - 1].offset); |
| |
| while (1) |
| { |
| if (idx >= domain->hash_size - incr) |
| idx -= domain->hash_size - incr; |
| else |
| idx += incr; |
| |
| nstr = W (domain->must_swap, domain->hash_tab[idx]); |
| if (nstr == 0) |
| /* Hash table entry is empty. */ |
| return NULL; |
| |
| if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len |
| && strcmp (msgid, |
| domain->data + W (domain->must_swap, |
| domain->orig_tab[nstr - 1].offset)) |
| == 0) |
| return (char *) domain->data |
| + W (domain->must_swap, domain->trans_tab[nstr - 1].offset); |
| } |
| /* NOTREACHED */ |
| } |
| |
| /* Now we try the default method: binary search in the sorted |
| array of messages. */ |
| bottom = 0; |
| top = domain->nstrings; |
| while (bottom < top) |
| { |
| int cmp_val; |
| |
| act = (bottom + top) / 2; |
| cmp_val = strcmp (msgid, domain->data |
| + W (domain->must_swap, |
| domain->orig_tab[act].offset)); |
| if (cmp_val < 0) |
| top = act; |
| else if (cmp_val > 0) |
| bottom = act + 1; |
| else |
| break; |
| } |
| |
| /* If an translation is found return this. */ |
| return bottom >= top ? NULL : (char *) domain->data |
| + W (domain->must_swap, |
| domain->trans_tab[act].offset); |
| } |
| |
| |
| /* Return string representation of locale CATEGORY. */ |
| static const char * |
| category_to_name (category) |
| int category; |
| { |
| const char *retval; |
| |
| switch (category) |
| { |
| #ifdef LC_COLLATE |
| case LC_COLLATE: |
| retval = "LC_COLLATE"; |
| break; |
| #endif |
| #ifdef LC_CTYPE |
| case LC_CTYPE: |
| retval = "LC_CTYPE"; |
| break; |
| #endif |
| #ifdef LC_MONETARY |
| case LC_MONETARY: |
| retval = "LC_MONETARY"; |
| break; |
| #endif |
| #ifdef LC_NUMERIC |
| case LC_NUMERIC: |
| retval = "LC_NUMERIC"; |
| break; |
| #endif |
| #ifdef LC_TIME |
| case LC_TIME: |
| retval = "LC_TIME"; |
| break; |
| #endif |
| #ifdef LC_MESSAGES |
| case LC_MESSAGES: |
| retval = "LC_MESSAGES"; |
| break; |
| #endif |
| #ifdef LC_RESPONSE |
| case LC_RESPONSE: |
| retval = "LC_RESPONSE"; |
| break; |
| #endif |
| #ifdef LC_ALL |
| case LC_ALL: |
| /* This might not make sense but is perhaps better than any other |
| value. */ |
| retval = "LC_ALL"; |
| break; |
| #endif |
| default: |
| /* If you have a better idea for a default value let me know. */ |
| retval = "LC_XXX"; |
| } |
| |
| return retval; |
| } |
| |
| /* Guess value of current locale from value of the environment variables. */ |
| static const char * |
| guess_category_value (category, categoryname) |
| int category; |
| const char *categoryname; |
| { |
| const char *retval; |
| |
| /* The highest priority value is the `LANGUAGE' environment |
| variable. This is a GNU extension. */ |
| retval = getenv ("LANGUAGE"); |
| if (retval != NULL && retval[0] != '\0') |
| return retval; |
| |
| /* `LANGUAGE' is not set. So we have to proceed with the POSIX |
| methods of looking to `LC_ALL', `LC_xxx', and `LANG'. On some |
| systems this can be done by the `setlocale' function itself. */ |
| #if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL |
| return setlocale (category, NULL); |
| #else |
| /* Setting of LC_ALL overwrites all other. */ |
| retval = getenv ("LC_ALL"); |
| if (retval != NULL && retval[0] != '\0') |
| return retval; |
| |
| /* Next comes the name of the desired category. */ |
| retval = getenv (categoryname); |
| if (retval != NULL && retval[0] != '\0') |
| return retval; |
| |
| /* Last possibility is the LANG environment variable. */ |
| retval = getenv ("LANG"); |
| if (retval != NULL && retval[0] != '\0') |
| return retval; |
| |
| /* We use C as the default domain. POSIX says this is implementation |
| defined. */ |
| return "C"; |
| #endif |
| } |
| |
| /* @@ begin of epilog @@ */ |
| |
| /* We don't want libintl.a to depend on any other library. So we |
| avoid the non-standard function stpcpy. In GNU C Library this |
| function is available, though. Also allow the symbol HAVE_STPCPY |
| to be defined. */ |
| #if !_LIBC && !HAVE_STPCPY |
| static char * |
| stpcpy (dest, src) |
| char *dest; |
| const char *src; |
| { |
| while ((*dest++ = *src++) != '\0') |
| /* Do nothing. */ ; |
| return dest - 1; |
| } |
| #endif |