wcrtomb.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 61 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include "variety.h"
#include <errno.h>
#include <mbstring.h>
#include <wchar.h>
#include "farfunc.h"
#include "seterrno.h"


_WCRTLINK int _NEARFAR(wcrtomb,_fwcrtomb)( char _FFAR *s, wchar_t wc, mbstate_t _FFAR *ps )
{
    int                 rc;

    /*** Check the simple cases ***/
    if( s == NULL )  return( 0 );           /* always in initial state */

    /*** Check for a valid wide character ***/
    rc = _NEARFAR(wctomb,_fwctomb)( s, wc );
    if( rc != -1 ) {
        if( rc != 0 ) {
            return( rc );
        } else {
            return( 1 );
        }
    } else {
        __set_errno( EILSEQ );
        return( -1 );
    }
}