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-rw-r--r--intl/dcgettext.c523
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diff --git a/intl/dcgettext.c b/intl/dcgettext.c
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+++ b/intl/dcgettext.c
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+/* dcgettext.c -- implemenatation of the dcgettext(3) function
+ Copyright (C) 1995 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
+#else
+# ifdef 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
+
+#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
+# 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
+#endif
+
+#if !defined HAVE_GETCWD && !defined _LIBC
+char *getwd ();
+# define getcwd(buf, max) getwd (buf)
+#else
+char *getcwd ();
+#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 __P ((struct loaded_domain *domain, const char *msgid));
+static const char *category_to_name __P((int category));
+static const char *guess_category_value __P((int category,
+ const char *categoryname));
+
+
+/* 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;
+{
+ struct loaded_domain *domain;
+ struct binding *binding;
+ const char *categoryname;
+ const char *categoryvalue;
+ char *dirname, *xdomainname;
+ char *single_locale;
+ char *retval;
+
+ /* 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);
+
+ errno = 0;
+ while ((ret = getcwd (dirname, path_max)) == NULL && errno == ERANGE)
+ {
+ path_max += PATH_INCR;
+ dirname = (char *) alloca (path_max + dirname_len);
+ errno = 0;
+ }
+
+ if (ret == NULL)
+ /* We cannot get the current working directory. Don't signal an
+ error but simply return the default string. */
+ return (char *) msgid;
+
+ /* 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 defined _LIBC || defined HAVE_STPCPY
+ stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname);
+#else
+ strcat (dirname, "/");
+ strcat (dirname, binding->dirname);
+#endif
+ }
+
+ /* 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);
+ /* 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 defined _LIBC || defined HAVE_STPCPY
+ stpcpy (stpcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"),
+ domainname),
+ ".mo");
+#else
+ strcpy (xdomainname, categoryname);
+ strcat (xdomainname, "/");
+ strcat (xdomainname, domainname);
+ strcat (xdomainname, ".mo");
+#endif
+
+ /* Creating working area. */
+ single_locale = (char *) alloca (strlen (categoryvalue) + 1);
+
+
+ /* 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 implicitely 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)
+ 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 = 6; cnt >= 0 && retval == NULL; --cnt)
+ if (domain->successor[cnt] != NULL)
+ {
+ retval = find_msg (domain->successor[cnt], msgid);
+
+ if (domain->successor[cnt]->data == NULL)
+ domain->successor[cnt] = NULL;
+ }
+ }
+
+ if (retval != NULL)
+ return retval;
+ }
+ }
+ /* NOTREACHED */
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library. */
+weak_alias (__dcgettext, dcgettext);
+#endif
+
+
+static char *
+find_msg (domain, msgid)
+ struct loaded_domain *domain;
+ const char *msgid;
+{
+ size_t top, act, bottom;
+
+ if (domain->decided == 0)
+ _nl_load_domain (domain);
+
+ if (domain->data == NULL)
+ return NULL;
+
+ /* 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 >= W (domain->must_swap, domain->hash_size) - incr)
+ idx -= W (domain->must_swap, 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
+}
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