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/*
* Copyright (C) 2007-2023 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#ifndef BU_STATIC_MEM_BUF_H
#define BU_STATIC_MEM_BUF_H
#include <stdint.h>
#include "bu/config.h"
#include "bu/stream.h"
namespace Bu
{
/**
* An immutable, read-only memory buffer. Construct this buffer around a
* block of raw memory, provide the length of the block, and you can read
* from that block via this class as though it were a normal stream.
*
* Use this class instead of MemBuf when you have a string already, and
* don't need to change it. MemBuf will make a copy of your string for
* it's own use (often) and this will not (ever).
*@ingroup Streams
*/
class StaticMemBuf : public Stream
{
public:
StaticMemBuf( const void *pData, size iSize );
virtual ~StaticMemBuf();
virtual void close();
virtual size read( void *pBuf, size iBytes );
virtual size write( const void *pBuf, size iBytes );
using Stream::write;
virtual size tell();
virtual void seek( size offset );
virtual void setPos( size pos );
virtual void setPosEnd( size pos );
virtual bool isEos();
virtual bool isOpen();
virtual void flush();
virtual bool canRead();
virtual bool canWrite();
virtual bool isReadable();
virtual bool isWritable();
virtual bool isSeekable();
virtual bool isBlocking();
virtual void setBlocking( bool bBlocking=true );
virtual void setSize( size iSize );
virtual size getSize() const;
virtual size getBlockSize() const;
virtual Bu::String getLocation() const;
private:
const void *pData;
size iSize;
size nPos;
};
}
#endif
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