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/* locale.c - Miscellaneous internationalization functions. */
/* Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash 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.
Bash 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 Bash; see the file COPYING. If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "config.h"
#include "bashtypes.h"
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include "bashintl.h"
#include "bashansi.h"
#include <stdio.h>
#include <ctype.h>
#include "shell.h"
/* The current locale when the program begins */
static char *default_locale;
/* The current domain for textdomain(3). */
static char *default_domain;
static char *default_dir;
/* tracks the value of LC_ALL; used to override values for other locale
categories */
static char *lc_all;
/* Set the value of default_locale and make the current locale the
system default locale. This should be called very early in main(). */
void
set_default_locale ()
{
#if defined (HAVE_SETLOCALE)
default_locale = setlocale (LC_ALL, "");
if (default_locale)
default_locale = savestring (default_locale);
#endif /* HAVE_SETLOCALE */
}
/* Set default values for LC_CTYPE, LC_COLLATE, and LC_MESSAGES if they
are not specified in the environment, but LANG or LC_ALL is. This
should be called from main() after parsing the environment. */
void
set_default_locale_vars ()
{
char *val;
#if defined (HAVE_SETLOCALE)
val = get_string_value ("LC_CTYPE");
if (val == 0 && lc_all && *lc_all)
setlocale (LC_CTYPE, lc_all);
# if defined (LC_COLLATE)
val = get_string_value ("LC_COLLATE");
if (val == 0 && lc_all && *lc_all)
setlocale (LC_COLLATE, lc_all);
# endif /* LC_COLLATE */
# if defined (LC_MESSAGES)
val = get_string_value ("LC_MESSAGES");
if (val == 0 && lc_all && *lc_all)
setlocale (LC_MESSAGES, lc_all);
# endif /* LC_MESSAGES */
#endif /* HAVE_SETLOCALE */
val = get_string_value ("TEXTDOMAIN");
if (val && *val)
{
FREE (default_domain);
default_domain = savestring (val);
textdomain (default_domain);
}
val = get_string_value ("TEXTDOMAINDIR");
if (val && *val)
{
FREE (default_dir);
default_dir = savestring (val);
bindtextdomain (default_domain, default_dir);
}
}
/* Set one of the locale categories (specified by VAR) to VALUE. Returns 1
if successful, 0 otherwise. */
int
set_locale_var (var, value)
char *var, *value;
{
if (var[0] == 'T' && var[10] == 0) /* TEXTDOMAIN */
{
FREE (default_domain);
default_domain = value ? savestring (value) : (char *)NULL;
textdomain (default_domain);
return (1);
}
else if (var[0] == 'T') /* TEXTDOMAINDIR */
{
FREE (default_dir);
default_dir = value ? savestring (value) : (char *)NULL;
bindtextdomain (default_domain, default_dir);
return (1);
}
/* var[0] == 'L' && var[1] == 'C' && var[2] == '_' */
else if (var[3] == 'A') /* LC_ALL */
{
FREE (lc_all);
if (value)
lc_all = savestring (value);
else if (default_locale)
lc_all = savestring (default_locale);
else
{
lc_all = xmalloc (1);
lc_all[0] = '\0';
}
#if defined (HAVE_SETLOCALE)
return (setlocale (LC_ALL, value) != 0);
#else
return (1);
#endif
}
#if defined (HAVE_SETLOCALE)
else if (var[3] == 'C' && var[4] == 'T') /* LC_CTYPE */
{
if (lc_all == 0 || *lc_all == '\0')
return (setlocale (LC_CTYPE, value) != 0);
}
else if (var[3] == 'C' && var[4] == 'O') /* LC_COLLATE */
{
# if defined (LC_COLLATE)
if (lc_all == 0 || *lc_all == '\0')
return (setlocale (LC_COLLATE, value) != 0);
# endif /* LC_COLLATE */
}
else if (var[3] == 'M' && var[4] == 'E') /* LC_MESSAGES */
{
# if defined (LC_MESSAGES)
if (lc_all == 0 || *lc_all == '\0')
return (setlocale (LC_MESSAGES, value) != 0);
# endif /* LC_MESSAGES */
}
#endif /* HAVE_SETLOCALE */
return (0);
}
/* Called when LANG is assigned a value. Sets LC_ALL if that has not
already been set. */
int
set_lang (var, value)
char *var, *value;
{
return ((lc_all == 0) ? set_locale_var ("LC_ALL", value) : 0);
}
/* Get the value of one of the locale variables (LC_MESSAGES, LC_CTYPE) */
char *
get_locale_var (var)
char *var;
{
char *locale;
locale = lc_all;
if (locale == 0)
locale = get_string_value (var);
if (locale == 0)
locale = default_locale;
return (locale);
}
/* Translate the contents of STRING, a $"..." quoted string, according
to the current locale. In the `C' or `POSIX' locale, or if gettext()
is not available, the passed string is returned unchanged. The
length of the translated string is returned in LENP, if non-null. */
char *
localetrans (string, len, lenp)
char *string;
int len, *lenp;
{
char *locale, *t;
#if defined (HAVE_GETTEXT)
char *translated;
int tlen;
#endif
/* Don't try to translate null strings. */
if (string == 0 || *string == 0)
{
if (lenp)
*lenp = 0;
return ((char *)NULL);
}
t = xmalloc (len + 1);
locale = get_locale_var ("LC_MESSAGES");
/* If we don't have setlocale() or the current locale is `C' or `POSIX',
just return the string. If we don't have gettext(), there's no use
doing anything else. */
#if defined (HAVE_GETTEXT)
if (locale == 0 || locale[0] == '\0' ||
(locale[0] == 'C' && locale[1] == '\0') || STREQ (locale, "POSIX"))
#endif
{
strcpy (t, string);
if (lenp)
*lenp = len;
return (t);
}
#if defined (HAVE_GETTEXT)
/* Now try to translate it. */
translated = gettext (string);
if (translated == string) /* gettext returns its argument if untranslatable */
{
strcpy (t, string);
if (lenp)
*lenp = len;
}
else
{
free (t);
tlen = strlen (translated);
t = xmalloc (tlen + 1);
strcpy (t, translated);
if (lenp)
*lenp = tlen;
}
return (t);
#endif /* HAVE_GETTEXT */
}
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