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sortix--sortix/libc/setlocale.cpp
2012-12-14 14:13:36 +01:00

62 lines
1.9 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2012.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of 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.
The Sortix C Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
setlocale.cpp
Set program locale.
*******************************************************************************/
#define __SORTIX_STDLIB_REDIRECTS 0
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <errno.h>
static char* current_locales[LC_NUM_CATEGORIES] = { NULL };
extern "C" const char* sortix_setlocale(int category, const char* locale)
{
if ( category < 0 || LC_ALL < category ) { errno = EINVAL; return NULL; }
char* new_strings[LC_NUM_CATEGORIES];
int from = category;
int to = category;
if ( !locale ) { return current_locales[to]; }
if ( category == LC_ALL ) { from = 0; to = LC_NUM_CATEGORIES-1; }
for ( int i = from; i <= to; i++ )
{
new_strings[i] = strdup(locale);
if ( !new_strings[i] )
{
for ( int n = from; n < i; n++ ) { free(new_strings[n]); }
return NULL;
}
}
for ( int i = from; i <= to; i++ )
{
free(current_locales[i]);
current_locales[i] = new_strings[i];
}
return locale;
}
extern "C" char* setlocale(int category, const char* locale)
{
return (char*) sortix_setlocale(category, locale);
}