66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
|
/* Get descriptor for character set conversion.
|
||
|
|
Copyright (C) 1997, 1998, 1999, 2000, 2001 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 <errno.h>
|
||
|
|
#include <iconv.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)
|
||
|
|
{
|
||
|
|
char *tocode_conv;
|
||
|
|
char *fromcode_conv;
|
||
|
|
size_t tocode_len;
|
||
|
|
size_t fromcode_len;
|
||
|
|
__gconv_t cd;
|
||
|
|
int res;
|
||
|
|
|
||
|
|
/* Normalize the name. We remove all characters beside alpha-numeric,
|
||
|
|
'_', '-', '/', and '.'. */
|
||
|
|
tocode_len = strlen (tocode);
|
||
|
|
tocode_conv = alloca (tocode_len + 3);
|
||
|
|
strip (tocode_conv, tocode);
|
||
|
|
tocode = tocode_conv[2] == '\0' ? upstr (tocode_conv, tocode) : tocode_conv;
|
||
|
|
|
||
|
|
fromcode_len = strlen (fromcode);
|
||
|
|
fromcode_conv = alloca (fromcode_len + 3);
|
||
|
|
strip (fromcode_conv, fromcode);
|
||
|
|
fromcode = (fromcode_conv[2] == '\0'
|
||
|
|
? upstr (fromcode_conv, fromcode) : fromcode_conv);
|
||
|
|
|
||
|
|
res = __gconv_open (tocode, fromcode, &cd, 0);
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
return (iconv_t) -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (iconv_t) cd;
|
||
|
|
}
|