///////////////////////////////////////////////////////////////////////////////
// stdioex.cpp                                                               //
// Extensions to stdio(.h) for vsscanf and vswscanf.                         //
//                                                                           //
// Copyright (c) Smartsoft, LLC 1985-2002.  All Rights Reserved.             //
// Written by Jan Knepper                                                    //
//                                                                           //
// Redistribution and use in source and binary forms, with or without        //
// modification, are permitted provided that the following conditions        //
// are met:                                                                  //
// 1. Redistributions of source code must retain the above copyright         //
//    notice, this list of conditions and the following disclaimer.          //
// 2. Redistributions in binary form must reproduce the above copyright      //
//    notice, this list of conditions and the following disclaimer in the    //
//    documentation and/or other materials provided with the distribution.   //
// 3. The name of the author may not be used to endorse or promote products  //
//    derived from this software without specific prior written permission.  //
//                                                                           //
// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND   //
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE     //
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR        //
// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE //
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR       //
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF      //
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  //
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN   //
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)   //
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF    //
// THE POSSIBILITY OF SUCH DAMAGE.                                           //
///////////////////////////////////////////////////////////////////////////////



#include <stdjak.h>

extern "C"
{
#include <../src/include/scio.h>
}

#include "RTL/stdioex.h"



static int              sgetc    ( void * );
static int              sungetc  ( int, void * );

static int              swgetc   ( void * );
static int              swungetc ( int, void * );



#ifndef _UNICODE                          // _UNICODE



int  vsscanf ( const char  *buffer, const char  *format, va_list  arg )
{
   return ( _sfmt ( ( fp_t ) sungetc, ( fp2_t ) sgetc, &buffer, format, arg ) );
}



static int  sgetc ( void  *ptr )
{
   return ( ( *( *( char ** ) ptr ) ) ? *( *( char ** ) ptr )++ : EOF );
}



static int  sungetc ( int  c, void  *ptr )
{
   return ( ( c == EOF ) ? c : ( *--( *( char ** ) ptr ) = c ) );
}



#else                                     // _UNICODE



int  vswscanf ( const wchar_t  *buffer, const wchar_t  *format, va_list  arg )
{
   return ( _wsfmt ( ( fp_t ) swungetc, ( fp2_t ) swgetc, &buffer, format, arg ) );
}



static int  sgetc ( void  *ptr )
{
   return ( ( *( *( wchar_t ** ) ptr ) ) ? *( *( wchar_t ** ) ptr )++ : EOF );
}



static int  sungetc ( int  c, void  *ptr )
{
   return ( ( c == EOF ) ? c : ( *--( *( wchar_t ** ) ptr ) = c ) );
}



#endif                                    // _UNICODE