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/* Get descriptor for character set conversion.
Copyright (C) 1997-2021 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, see
<https://www.gnu.org/licenses/>. */
#include <alloca.h>
#include <errno.h>
#include <iconv.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <gconv_int.h>
#include "gconv_charset.h"
iconv_t
iconv_open (const char *tocode, const char *fromcode)
{
__gconv_t cd;
struct gconv_spec conv_spec;
if (__gconv_create_spec (&conv_spec, fromcode, tocode) == NULL)
return (iconv_t) -1;
int res = __gconv_open (&conv_spec, &cd, 0);
__gconv_destroy_spec (&conv_spec);
if (__builtin_expect (res, __GCONV_OK) != __GCONV_OK)
{
/* We must set the error number according to the specs. */
if (res == __GCONV_NOCONV || res == __GCONV_NODB)
__set_errno (EINVAL);
cd = (iconv_t) -1;
}
return (iconv_t) cd;
}
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