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Diffstat (limited to 'common/localename.c')
| -rw-r--r-- | common/localename.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/common/localename.c b/common/localename.c new file mode 100644 index 0000000..b620a74 --- /dev/null +++ b/common/localename.c @@ -0,0 +1,127 @@ +/* localename.c - Determine the current selected locale. + * Copyright (C) 1995-1999, 2000-2003, 2007, + * 2008 Free Software Foundation, Inc. + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of either + * + * - the GNU Lesser General Public License as published by the Free + * Software Foundation; either version 3 of the License, or (at + * your option) any later version. + * + * or + * + * - the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + * or both in parallel, as here. + * + * This file 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, see <https://www.gnu.org/licenses/>. + */ +/* Written by Ulrich Drepper <drepper@gnu.org>, 1995. */ +/* Win32 code written by Tor Lillqvist <tml@iki.fi>. */ +/* Modified for GpgOL use by Werner Koch <wk@gnupg.org>, 2005. */ +/* Modified for GnuPG use by Werner Koch <wk@gnupg.org>, 2007 */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_LOCALE_H +#include <locale.h> +#endif +#include <gpg-error.h> /* We need gettext_localename for W32. */ + +#include "../common/w32help.h" + +/* 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. Neither do SUSV2 and + ISO C 99. So we can use this feature only on selected systems (e.g. + those using GNU C Library). */ +#if defined _LIBC || (defined __GNU_LIBRARY__ && __GNU_LIBRARY__ >= 2) +# define HAVE_LOCALE_NULL +#endif + +/* Use a dummy value for LC_MESSAGES in case it is not defined. This + works because we always test for HAVE_LC_MESSAGES and the core + function takes the category as a string as well. */ +#ifndef HAVE_LC_MESSAGES +#define LC_MESSAGES 0 +#endif + + +/* Determine the current locale's name, and canonicalize it into XPG syntax + language[_territory[.codeset]][@modifier] + The codeset part in the result is not reliable; the locale_charset() + should be used for codeset information instead. + The result must not be freed; it is statically allocated. */ + +#ifndef HAVE_W32_SYSTEM +static const char * +do_nl_locale_name (int category, const char *categoryname) +{ + const char *retval; + + /* Use 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 + (void)categoryname; + retval = setlocale (category, NULL); +# else + (void)category; + /* Setting of LC_ALL overwrites all other. */ + retval = getenv ("LC_ALL"); + if (retval == NULL || retval[0] == '\0') + { + /* Next comes the name of the desired category. */ + retval = getenv (categoryname); + if (retval == NULL || retval[0] == '\0') + { + /* Last possibility is the LANG environment variable. */ + retval = getenv ("LANG"); + if (retval == NULL || retval[0] == '\0') + /* We use C as the default domain. POSIX says this is + implementation defined. */ + retval = "C"; + } + } +# endif + + return retval; +} +#endif /* HAVE_W32_SYSTEM */ + + + +/* Return the locale used for translatable messages. The standard C + and POSIX are locale names are mapped to an empty string. If a + locale can't be found an empty string will be returned. */ +const char * +gnupg_messages_locale_name (void) +{ + const char *s; + +#ifdef HAVE_W32_SYSTEM + /* We use the localename function libgpg-error. */ + s = gettext_localename (); +#else + s = do_nl_locale_name (LC_MESSAGES, "LC_MESSAGES"); +#endif + if (!s) + s = ""; + else if (!strcmp (s, "C") || !strcmp (s, "POSIX")) + s = ""; + + return s; +} |