diff options
Diffstat (limited to 'intl/dcgettext.c')
| -rw-r--r-- | intl/dcgettext.c | 835 |
1 files changed, 4 insertions, 831 deletions
diff --git a/intl/dcgettext.c b/intl/dcgettext.c index 8e51970495..5be8e4ff70 100644 --- a/intl/dcgettext.c +++ b/intl/dcgettext.c @@ -1,5 +1,5 @@ /* Implementation of the dcgettext(3) function. - Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. + Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Its master source is NOT part of the C library, however. @@ -23,70 +23,6 @@ # include <config.h> #endif -#include <sys/types.h> - -#if defined __GNUC__ && !defined C_ALLOCA -# define alloca __builtin_alloca -# define HAVE_ALLOCA 1 -#else -# if (defined HAVE_ALLOCA_H || defined _LIBC) && !defined C_ALLOCA -# 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 - -#if defined HAVE_LOCALE_H || defined _LIBC -# include <locale.h> -#endif - -#if defined HAVE_SYS_PARAM_H || defined _LIBC -# include <sys/param.h> -#endif - #include "gettext.h" #include "gettextP.h" #ifdef _LIBC @@ -94,225 +30,19 @@ void free (); #else # include "libgettext.h" #endif -#include "hash-string.h" - -/* Thread safetyness. */ -#ifdef _LIBC -# include <bits/libc-lock.h> -#endif /* @@ 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 -# ifndef stpcpy -# define stpcpy __stpcpy -# endif -#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 -# ifndef HAVE_MEMPCPY -static void *mempcpy PARAMS ((void *dest, const void *src, size_t n)); -# 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 - -/* We want to allocate a string at the end of the struct. gcc makes - this easy. */ -#ifdef __GNUC__ -# define ZERO 0 -#else -# define ZERO 1 -#endif - -/* This is the type used for the search tree where known translations - are stored. */ -struct known_translation_t -{ - /* Domain in which to search. */ - char *domain; - - /* The category. */ - int category; - - /* State of the catalog counter at the point the string was found. */ - int counter; - - /* And finally the translation. */ - const char *translation; - - /* Pointer to the string in question. */ - char msgid[ZERO]; -}; - -/* Root of the search tree with known translations. We can use this - only if the system provides the `tsearch' function family. */ -#if defined HAVE_TSEARCH || defined _LIBC -# include <search.h> - -static void *root; - -# ifdef _LIBC -# define tsearch __tsearch -# endif - -/* Function to compare two entries in the table of known translations. */ -static int -transcmp (const void *p1, const void *p2) -{ - struct known_translation_t *s1 = (struct known_translation_t *) p1; - struct known_translation_t *s2 = (struct known_translation_t *) p2; - int result; - - result = strcmp (s1->msgid, s2->msgid); - if (result == 0) - { - result = strcmp (s1->msgid, s2->msgid); - if (result == 0) - /* We compare the category last (though this is the cheapest - operation) since it is hopefully always the same (namely - LC_MESSAGES). */ - result = s1->category - s2->category; - } - - return result; -} -#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 const char *category_to_name PARAMS ((int category)) internal_function; -static const char *guess_category_value PARAMS ((int category, - const char *categoryname)) - internal_function; - - -/* 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 +# define DCIGETTEXT __dcigettext #else # define DCGETTEXT dcgettext__ -#endif - -/* Checking whether the binaries runs SUID must be done and glibc provides - easier methods therefore we make a difference here. */ -#ifdef _LIBC -# define ENABLE_SECURE __libc_enable_secure -# define DETERMINE_SECURE -#else -static int enable_secure; -# define ENABLE_SECURE (enable_secure == 1) -# define DETERMINE_SECURE \ - if (enable_secure == 0) \ - { \ - if (getuid () != geteuid () || getgid () != getegid ()) \ - enable_secure = 1; \ - else \ - enable_secure = -1; \ - } +# define DCIGETTEXT dcigettext__ #endif /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY @@ -323,567 +53,10 @@ DCGETTEXT (domainname, msgid, category) 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; -#if defined HAVE_TSEARCH || defined _LIBC - struct known_translation_t *search; - struct known_translation_t **foundp; - size_t msgid_len = strlen (msgid) + 1; -#endif - size_t domainname_len; - - /* If no real MSGID is given return NULL. */ - if (msgid == NULL) - return NULL; - -#if defined HAVE_TSEARCH || defined _LIBC - /* Try to find the translation among those which we found at some time. */ - search = (struct known_translation_t *) alloca (sizeof (*search) - + msgid_len); - memcpy (search->msgid, msgid, msgid_len); - search->domain = (char *) domainname; - search->category = category; - - foundp = (struct known_translation_t **) tfind (search, &root, transcmp); - if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr) - return (char *) (*foundp)->translation; -#endif - - /* Preserve the `errno' value. */ - saved_errno = errno; - - /* See whether this is a SUID binary or not. */ - DETERMINE_SECURE; - - /* 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 - definition 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 int) 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); - - domainname_len = strlen (domainname); - xdomainname = (char *) alloca (strlen (categoryname) - + domainname_len + 5); - ADD_BLOCK (block_list, xdomainname); - - stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"), - domainname, domainname_len), - ".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 the 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'; - - /* When this is a SUID binary we must not allow accessing files - outside the dedicated directories. */ - if (ENABLE_SECURE - && (memchr (single_locale, '/', - _nl_find_language (single_locale) - single_locale) - != NULL)) - /* Ingore this entry. */ - continue; - } - - /* 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 = _nl_find_msg (domain, msgid); - - if (retval == NULL) - { - int cnt; - - for (cnt = 0; domain->successor[cnt] != NULL; ++cnt) - { - retval = _nl_find_msg (domain->successor[cnt], msgid); - - if (retval != NULL) - break; - } - } - - if (retval != NULL) - { - FREE_BLOCKS (block_list); - __set_errno (saved_errno); -#if defined HAVE_TSEARCH || defined _LIBC - if (foundp == NULL) - { - /* Create a new entry and add it to the search tree. */ - struct known_translation_t *newp; - - newp = (struct known_translation_t *) - malloc (sizeof (*newp) + msgid_len - + domainname_len + 1 - ZERO); - if (newp != NULL) - { - newp->domain = mempcpy (newp->msgid, msgid, msgid_len); - memcpy (newp->domain, domainname, domainname_len + 1); - newp->category = category; - newp->counter = _nl_msg_cat_cntr; - newp->translation = retval; - - /* Insert the entry in the search tree. */ - foundp = (struct known_translation_t **) - tsearch (newp, &root, transcmp); - if (&newp != foundp) - /* The insert failed. */ - free (newp); - } - } - else - { - /* We can update the existing entry. */ - (*foundp)->counter = _nl_msg_cat_cntr; - (*foundp)->translation = retval; - } -#endif - return retval; - } - } - } - /* NOTREACHED */ + return DCIGETTEXT (domainname, msgid, NULL, 0, 0, category); } #ifdef _LIBC /* Alias for function name in GNU C Library. */ weak_alias (__dcgettext, dcgettext); #endif - - -char * -internal_function -_nl_find_msg (domain_file, msgid) - struct loaded_l10nfile *domain_file; - const char *msgid; -{ - size_t act = 0; - size_t top, 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) - { - /* We found an entry. If we have to convert the string to use - a different character set this is the time. */ - char *result = - (char *) domain->data + W (domain->must_swap, - domain->trans_tab[nstr - 1].offset); - - if ( -#ifdef _LIBC - domain->conv != (__gconv_t) -1 -#else -# if HAVE_ICONV - domain->conv != (iconv_t) -1 -# endif -#endif - ) - { - /* We are supposed to do a conversion. First allocate an - appropriate table with the same structure as the hash - table in the file where we can put the pointers to the - converted strings in. */ - if (domain->conv_tab == NULL - && ((domain->conv_tab = (char **) calloc (domain->hash_size, - sizeof (char *))) - == NULL)) - /* Mark that we didn't succeed allocating a table. */ - domain->conv_tab = (char **) -1; - - if (domain->conv_tab == (char **) -1) - /* Nothing we can do, no more memory. */ - return NULL; - - if (domain->conv_tab[idx] == NULL) - { - /* We haven't used this string so far, so it is not - translated yet. Do this now. */ -#ifdef _LIBC - /* For glibc we use a bit more efficient memory handling. - We allocate always larger blocks which get used over - time. This is faster than many small allocations. */ - __libc_lock_define_initialized (static, lock) - static unsigned char *freemem; - static size_t freemem_size; - /* Note that we include the NUL byte. */ - size_t resultlen = strlen (result) + 1; - const unsigned char *inbuf = result; - unsigned char *outbuf = freemem; - size_t written; - int res; - - __libc_lock_lock (lock); - - while ((res = __gconv (domain->conv, - &inbuf, inbuf + resultlen, - &outbuf, outbuf + freemem_size, - &written)) == __GCONV_OK) - { - if (res != __GCONV_FULL_OUTPUT) - goto out; - - /* We must resize the buffer. */ - freemem_size = MAX (2 * freemem_size, 4064); - freemem = (char *) malloc (freemem_size); - if (freemem == NULL) - goto out; - - inbuf = result; - outbuf = freemem; - } - - /* We have now in our buffer a converted string. Put this - in the hash table */ - domain->conv_tab[idx] = freemem; - freemem_size -= outbuf - freemem; - freemem = outbuf; - - out: - __libc_lock_unlock (lock); -#endif - } - - result = domain->conv_tab[idx]; - } - - return result; - } - - 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 * -internal_function -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 * -internal_function -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 - -#if !_LIBC && !HAVE_MEMPCPY -static void * -mempcpy (dest, src, n) - void *dest; - const void *src; - size_t n; -{ - return (void *) ((char *) memcpy (dst, src, n) + n); -} -#endif - - -#ifdef _LIBC -/* If we want to free all resources we have to do some work at - program's end. */ -static void __attribute__ ((unused)) -free_mem (void) -{ - struct binding *runp; - - for (runp = _nl_domain_bindings; runp != NULL; runp = runp->next) - { - free (runp->domainname); - if (runp->dirname != _nl_default_dirname) - /* Yes, this is a pointer comparison. */ - free (runp->dirname); - } - - if (_nl_current_default_domain != _nl_default_default_domain) - /* Yes, again a pointer comparison. */ - free ((char *) _nl_current_default_domain); - - /* Remove the search tree with the know translations. */ - __tdestroy (root, free); -} - -text_set_element (__libc_subfreeres, free_mem); -#endif |