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/*
* Copyright (C) 2007-2012 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.
*/
#include "bu/staticmembuf.h"
using namespace Bu;
Bu::StaticMemBuf::StaticMemBuf( const void *pData, size iSize ) :
pData( pData ),
iSize( iSize ),
nPos( 0 )
{
}
Bu::StaticMemBuf::~StaticMemBuf()
{
}
void Bu::StaticMemBuf::close()
{
}
size Bu::StaticMemBuf::read( void *pBuf, size nBytes )
{
if( iSize-nPos < nBytes )
nBytes = iSize-nPos;
memcpy( pBuf, ((char *)pData)+nPos, nBytes );
nPos += nBytes;
return nBytes;
}
size Bu::StaticMemBuf::write( const void *, size )
{
return -1;
}
size Bu::StaticMemBuf::tell()
{
return nPos;
}
void Bu::StaticMemBuf::seek( size offset )
{
nPos += offset;
if( nPos < 0 ) nPos = 0;
else if( nPos > iSize ) nPos = iSize;
}
void Bu::StaticMemBuf::setPos( size pos )
{
nPos = pos;
if( nPos < 0 ) nPos = 0;
else if( nPos > iSize ) nPos = iSize;
}
void Bu::StaticMemBuf::setPosEnd( size pos )
{
nPos = iSize-pos;
if( nPos < 0 ) nPos = 0;
else if( nPos > iSize ) nPos = iSize;
}
bool Bu::StaticMemBuf::isEos()
{
return (nPos == iSize);
}
bool Bu::StaticMemBuf::isOpen()
{
return true;
}
void Bu::StaticMemBuf::flush()
{
}
bool Bu::StaticMemBuf::canRead()
{
return !isEos();
}
bool Bu::StaticMemBuf::canWrite()
{
return false;
}
bool Bu::StaticMemBuf::isReadable()
{
return true;
}
bool Bu::StaticMemBuf::isWritable()
{
return false;
}
bool Bu::StaticMemBuf::isSeekable()
{
return true;
}
bool Bu::StaticMemBuf::isBlocking()
{
return true;
}
void Bu::StaticMemBuf::setBlocking( bool )
{
}
void Bu::StaticMemBuf::setSize( size )
{
}
Bu::size Bu::StaticMemBuf::getSize() const
{
return iSize;
}
Bu::size Bu::StaticMemBuf::getBlockSize() const
{
return iSize;
}
Bu::String Bu::StaticMemBuf::getLocation() const
{
return "";
}
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