sscanf.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 78 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
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*    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.
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*  ========================================================================
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include "variety.h"
#include "widechar.h"
#include <stdio.h>
#include <stdarg.h>
#include "scanf.h"


static int cget_string( PTR_SCNF_SPECS specs )
    {
        int c;

        if( (c = *(specs->ptr)) != NULLCHAR ) {
            ++(specs->ptr);
        } else {
            c = EOF;
            specs->eoinp = 1;
        }
        return( c );
    }


static void uncget_string( int c, PTR_SCNF_SPECS specs )
    {
        --specs->ptr;
    }


_WCRTLINK int __F_NAME(vsscanf,vswscanf) ( const CHAR_TYPE *dest, const CHAR_TYPE *format, va_list args )
    {
        auto SCNF_SPECS specs;

        specs.ptr = (CHAR_TYPE *)dest;
        specs.cget_rtn = cget_string;
        specs.uncget_rtn = uncget_string;
        return( __F_NAME(__scnf,__wscnf)( (PTR_SCNF_SPECS)&specs, format, args ) );
    }


_WCRTLINK int __F_NAME(sscanf,swscanf) ( const CHAR_TYPE *dest, const CHAR_TYPE *format, ... )
    {
        va_list args;

        va_start( args, format );
        return( __F_NAME(vsscanf,vswscanf)( dest, format, args ) );
    }