79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Copyright (c) 1998, Microsoft Corp. All rights reserved.
|
||
|
|
//
|
||
|
|
// FILE
|
||
|
|
//
|
||
|
|
// outbuf.h
|
||
|
|
//
|
||
|
|
// SYNOPSIS
|
||
|
|
//
|
||
|
|
// Declares the class OutputBuffer.
|
||
|
|
//
|
||
|
|
// MODIFICATION HISTORY
|
||
|
|
//
|
||
|
|
// 08/04/1998 Original version.
|
||
|
|
// 07/09/1999 Add OutputBuffer::empty
|
||
|
|
//
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#ifndef _OUTBUF_H_
|
||
|
|
#define _OUTBUF_H_
|
||
|
|
#if _MSC_VER >= 1000
|
||
|
|
#pragma once
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <nocopy.h>
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// CLASS
|
||
|
|
//
|
||
|
|
// OutputBuffer
|
||
|
|
//
|
||
|
|
// DESCRIPTION
|
||
|
|
//
|
||
|
|
// Implements a dynamically resized buffer suitable for formatting output.
|
||
|
|
//
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
class OutputBuffer
|
||
|
|
: NonCopyable
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
OutputBuffer() throw ();
|
||
|
|
~OutputBuffer() throw ();
|
||
|
|
|
||
|
|
// Append an octet string.
|
||
|
|
void append(const BYTE* buf, DWORD buflen);
|
||
|
|
|
||
|
|
// Append a null-terminated ANSI string.
|
||
|
|
void append(PCSTR sz);
|
||
|
|
|
||
|
|
// Append a single ANSI character.
|
||
|
|
void append(CHAR ch);
|
||
|
|
|
||
|
|
bool empty() const throw ()
|
||
|
|
{ return next == start; }
|
||
|
|
|
||
|
|
// Returns a pointer to the embedded buffer.
|
||
|
|
PBYTE getBuffer() const throw ()
|
||
|
|
{ return start; }
|
||
|
|
|
||
|
|
// Returns the number of bytes currently stored in the buffer.
|
||
|
|
DWORD getLength() const throw ()
|
||
|
|
{ return (DWORD)(next - start); }
|
||
|
|
|
||
|
|
// Reserves 'nbyte' bytes in the buffer and returns a pointer to the
|
||
|
|
// reserved bytes.
|
||
|
|
PBYTE reserve(DWORD nbyte);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
// Resizes the buffer and updates cursor to point into the new buffer.
|
||
|
|
void resize(PBYTE& cursor);
|
||
|
|
|
||
|
|
PBYTE start, next, end;
|
||
|
|
BYTE scratch[0x400];
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // _OUTBUF_H_
|