office-gobmx/package/source/zippackage/ZipPackageBuffer.cxx

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/*************************************************************************
*
* $RCSfile: ZipPackageBuffer.cxx,v $
*
* $Revision: 1.8 $
*
* last change: $Author: mtg $ $Date: 2001-04-19 14:16:31 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): Martin Gallwey (gallwey@sun.com)
*
*
************************************************************************/
#ifndef _ZIP_PACKAGE_BUFFER_HXX
#include <ZipPackageBuffer.hxx>
#endif
using namespace com::sun::star::uno;
using namespace com::sun::star::io;
ZipPackageBuffer::ZipPackageBuffer(sal_Int64 nNewBufferSize)
: nBufferSize (nNewBufferSize)
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, aBuffer (static_cast < sal_Int32 > (nNewBufferSize))
, nCurrent(0)
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, nEnd(0)
{
}
ZipPackageBuffer::~ZipPackageBuffer(void)
{
}
Any SAL_CALL ZipPackageBuffer::queryInterface( const Type& rType )
throw(RuntimeException)
{
return ::cppu::queryInterface ( rType ,
// OWeakObject interfaces
reinterpret_cast< XInterface* > ( this ) ,
static_cast< XWeak* > ( this ) ,
// my interfaces
static_cast< XInputStream* > ( this ) ,
static_cast< XSeekable* > ( this ) ,
static_cast< XOutputStream* > ( this ) );
}
void SAL_CALL ZipPackageBuffer::acquire(void)
throw()
{
OWeakObject::acquire();
}
void SAL_CALL ZipPackageBuffer::release(void)
throw()
{
OWeakObject::release();
}
sal_Int32 SAL_CALL ZipPackageBuffer::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
{
//const sal_Int8 *pBuffer = aBuffer.getConstArray()+nCurrent;
if (nBytesToRead < 0)
throw BufferSizeExceededException(::rtl::OUString(),*this);
if (nBytesToRead + nCurrent > nEnd)
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nBytesToRead = static_cast < sal_Int32 > (nEnd - nCurrent);
memcpy(aData.getArray(), aBuffer.getConstArray() + nCurrent, nBytesToRead);
nCurrent +=nBytesToRead;
return nBytesToRead;
//aData.realloc(nBytesToRead);
//memcpy(aData.getArray(), pBuffer + nCurrent, nBytesToRead);
//memcpy(pData, pBuffer, nBytesToRead);
// Optimisations for often called cases
/*
switch (nBytesToRead)
{
case 0:
return 0;
case 1:
*(pData++) = *pBuffer;
nCurrent +=1;
return 1;
case 2:
*(pData++) = *(pBuffer++);
* pData = *pBuffer;
nCurrent +=2;
return 2;
case 4:
*(pData++) = *(pBuffer++);
*(pData++) = *(pBuffer++);
*(pData++) = *(pBuffer++);
* pData = * pBuffer;
nCurrent +=4;
return 4;
default:
memcpy(pData, pBuffer, nBytesToRead);
nCurrent +=nBytesToRead;
return nBytesToRead;
}
//return nBytesToRead;
*/
}
sal_Int32 SAL_CALL ZipPackageBuffer::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
{
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/*
if (nMaxBytesToRead + nCurrent > nEnd)
nMaxBytesToRead = nEnd - nCurrent;
sal_Int64 nEndRead = nMaxBytesToRead+nCurrent;
for (sal_Int64 i =0; nCurrent < nEndRead; nCurrent++, i++)
aData[i] = aBuffer[nCurrent];
return nMaxBytesToRead;
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*/
// all data is available at once
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return readBytes(aData, nMaxBytesToRead);
}
void SAL_CALL ZipPackageBuffer::skipBytes( sal_Int32 nBytesToSkip )
throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
{
if (nBytesToSkip < 0)
throw BufferSizeExceededException(::rtl::OUString(),*this);
if (nBytesToSkip + nCurrent > nEnd)
nBytesToSkip = static_cast < sal_Int32 > (nEnd - nCurrent);
nCurrent+=nBytesToSkip;
}
sal_Int32 SAL_CALL ZipPackageBuffer::available( )
throw(NotConnectedException, IOException, RuntimeException)
{
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return static_cast < sal_Int32 > (nEnd - nCurrent);
}
void SAL_CALL ZipPackageBuffer::closeInput( )
throw(NotConnectedException, IOException, RuntimeException)
{
}
void SAL_CALL ZipPackageBuffer::writeBytes( const Sequence< sal_Int8 >& aData )
throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
{
sal_Int64 nDataLen = aData.getLength();
const sal_Int8 *pData = aData.getConstArray();
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if (nEnd + nDataLen > nBufferSize)
{
while (nEnd + nDataLen > nBufferSize)
nBufferSize *=2;
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aBuffer.realloc(static_cast < sal_Int32 > (nBufferSize));
}
/*
sal_Int8 *pBuffer = aBuffer.getArray()+nCurrent;
switch (nDataLen)
{
case 0:
break;
case 1:
* pBuffer = *pData;
nCurrent++;
break;
case 2:
*(pBuffer++) = *(pData++);
* pBuffer = * pData ;
nCurrent +=2;
break;
case 4:
*(pBuffer++) = *(pData++);
*(pBuffer++) = *(pData++);
*(pBuffer++) = *(pData++);
* pBuffer = * pData ;
nCurrent +=4;
break;
default:
memcpy(pBuffer, pData, static_cast < sal_Int32 > (nDataLen));
nCurrent += nDataLen;
break;
}
*/
//memcpy( pBuffer + nCurrent, aData.getConstArray(), static_cast < sal_Int32 > (nDataLen));
memcpy( aBuffer.getArray() + nCurrent, aData.getConstArray(), static_cast < sal_Int32 > (nDataLen));
nCurrent+=nDataLen;
if (nCurrent>nEnd)
nEnd = nCurrent;
}
void SAL_CALL ZipPackageBuffer::flush( )
throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
{
}
void SAL_CALL ZipPackageBuffer::closeOutput( )
throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
{
}
void SAL_CALL ZipPackageBuffer::seek( sal_Int64 location )
throw(::com::sun::star::lang::IllegalArgumentException, IOException, RuntimeException)
{
nCurrent = location;
}
sal_Int64 SAL_CALL ZipPackageBuffer::getPosition( )
throw(IOException, RuntimeException)
{
return nCurrent;
}
sal_Int64 SAL_CALL ZipPackageBuffer::getLength( )
throw(IOException, RuntimeException)
{
return nEnd;
}