// File.cpp



#include <windows.h>



#include "File.h"





CFile::CFile()

{

	File = NULL;

}





CFile::~CFile()

{

	if (File)

	{

		CloseHandle( File );

		File = NULL;

	}

}





s32 CFile::Create( const char *filename )

{

	Close();



	File = CreateFile( filename,

										 GENERIC_WRITE | GENERIC_READ,

										 0,

										 NULL,

										 CREATE_ALWAYS,

										 FILE_ATTRIBUTE_NORMAL,

										 NULL );



	if (File == INVALID_HANDLE_VALUE)

		return( FALSE );



	return( TRUE );

}





s32 CFile::Open( const char *filename )

{

	Close();



	File = CreateFile( filename,

										 GENERIC_READ,

										 FILE_SHARE_READ,

										 NULL,

										 OPEN_EXISTING,

										 FILE_ATTRIBUTE_NORMAL,

										 NULL );



	if (File == INVALID_HANDLE_VALUE)

		return( FALSE );



	return( TRUE );

}





void CFile::Close()

{

	if (File)

	{

		CloseHandle( File );

		File = NULL;

	}

}





void CFile::Read( void *data, s32 size )

{

	DWORD

		done;



	ReadFile( File, data, size, &done, NULL );

}





void CFile::Write( const void *data, s32 size )

{

	DWORD

		done;



	WriteFile( File, data, size, &done, NULL );

}





s32 CFile::GetPos()

{

	return( SetFilePointer( File, 0, NULL, FILE_CURRENT ) );

}





s32 CFile::GetSize()

{

	s32

		pos,

		size;



	pos = SetFilePointer( File, 0, NULL, FILE_CURRENT );

	size = SetFilePointer( File, 0, NULL, FILE_END );

	SetFilePointer( File, pos, NULL, FILE_BEGIN );

	return( size );

}





void CFile::Seek( s32 pos )

{

	SetFilePointer( File, pos, NULL, pos >= 0 ? FILE_BEGIN : FILE_END );

}





void CFile::Skip( s32 skip )

{

	SetFilePointer( File, skip, NULL, FILE_CURRENT );

}





void CFile::End()

{

	SetFilePointer( File, 0, NULL, FILE_END );

}