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/*
* Copyright (C) 2007-2019 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_MEM_BUF_H
#define BU_MEM_BUF_H
#include <stdint.h>
#include "bu/config.h"
#include "bu/stream.h"
#include "bu/string.h"
#include "bu/blob.h"
namespace Bu
{
/**
* A memory buffer stream. This provides a read/write stream in memory that
* works exactly like a file stream...only in memory. You can seed the
* memory buffer with a Bu::String of your own, or start with an empty one.
* Due to Bu::String using Bu::SharedCore starting with a string will not
* necesarilly cause the MemBuf to make a copy of your memory, but if you're
* sure you're not going to need to change the stream then use StaticMemBuf.
*@ingroup Streams
*/
class MemBuf : public Stream
{
public:
MemBuf();
MemBuf( const Bu::String &str );
virtual ~MemBuf();
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;
Bu::String &getString();
Bu::Blob getBlob();
void setString( const Bu::String &sNewData );
private:
Bu::String sBuf;
size nPos;
};
}
#endif
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