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/* Duplicate handle for selection of locales.
Copyright (C) 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
The GNU 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 2.1 of the License, or (at your option) any later version.
The GNU 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 GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <locale.h>
#include <bits/libc-lock.h>
#include <stdlib.h>
#include <localeinfo.h>
/* Lock for protecting global data. */
__libc_lock_define (extern , __libc_setlocale_lock attribute_hidden)
__locale_t
__duplocale (__locale_t dataset)
{
__locale_t result;
int cnt;
/* We modify global data. */
__libc_lock_lock (__libc_setlocale_lock);
/* Get memory. */
result = (__locale_t) malloc (sizeof (struct __locale_struct));
if (result != NULL)
/* Duplicate the names in a separate loop first so we can
bail out if strdup fails and not have touched usage_counts. */
for (cnt = 0; cnt < __LC_LAST; ++cnt)
if (cnt != LC_ALL)
{
if (dataset->__names[cnt] == _nl_C_name)
result->__names[cnt] = _nl_C_name;
else
{
result->__names[cnt] = __strdup (dataset->__names[cnt]);
if (result->__names[cnt] == NULL)
{
while (cnt-- > 0)
if (dataset->__names[cnt] != _nl_C_name)
free ((char *) dataset->__names[cnt]);
free (result);
result = NULL;
break;
}
}
}
if (result != NULL)
{
for (cnt = 0; cnt < __LC_LAST; ++cnt)
if (cnt != LC_ALL)
{
result->__locales[cnt] = dataset->__locales[cnt];
if (result->__locales[cnt]->usage_count < MAX_USAGE_COUNT)
++result->__locales[cnt]->usage_count;
}
/* Update the special members. */
result->__ctype_b = dataset->__ctype_b;
result->__ctype_tolower = dataset->__ctype_tolower;
result->__ctype_toupper = dataset->__ctype_toupper;
}
/* It's done. */
__libc_lock_unlock (__libc_setlocale_lock);
return result;
}
weak_alias (__duplocale, duplocale)
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