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//+---------------------------------------------------------------------------
//
// Copyright (C) 1992, Microsoft Corporation.
//
// File: FSTREAM.HXX
//
// Contents: Streams for accessing files w/runtime libs
//
// Classes: CStreamFile
//
// History: 05-Aug-92 MikeHew Created
// 14-Aug-92 KyleP Hacked
// 23-Nov-92 AmyA Revised for buffering data
//
//----------------------------------------------------------------------------
#ifndef __FSTREAM_HXX__
#define __FSTREAM_HXX__
#ifdef DISPLAY_INCLUDES
#pragma message( "#include <" __FILE__ ">..." )
#endif
#include <except.hxx>
#include <streams.hxx>
#include <stdio.h>
#include <debnot.h> // for Win4Assert
#define defaultBufSize 4096
//+---------------------------------------------------------------------------
//
// Class: CStreamFile
//
// Purpose: Stream for dumping data to a file and reading back
//
// History: 29-Jul-92 MikeHew Created
// 23-Nov-92 AmyA Revised for buffering data
//
// Notes: Seek() is from the current offset
//
//----------------------------------------------------------------------------
class CStreamFile : INHERIT_VIRTUAL_UNWIND, public CStreamA
{
DECLARE_UNWIND
public:
enum FileType
{
NewFile,
NewOrExistingFile,
ExistingFile
};
EXPORTDEF CStreamFile( const char * filename, FileType type );
EXPORTDEF ~CStreamFile();
//
// Status functions
//
BOOL Ok() { return (_fp != 0) && !ferror( _fp ); }
//
// Input from stream functions
//
EXPORTDEF unsigned APINOT Read( void *dest, unsigned size );
//
// Output to stream functions
//
EXPORTDEF unsigned APINOT Write( const void *source, unsigned size );
//
// Misc
//
EXPORTDEF int APINOT Seek( LONG offset, CStream::SEEK origin = CStream::SET );
ULONG Size();
private:
BOOL FillBuf();
FILE * _fp;
};
#endif // __FSTREAM_HXX__
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