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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#include <ZipPackageBuffer.hxx>
#include <PackageConstants.hxx>
#include <string.h>
#include <sal/log.hxx>
#include <com/sun/star/io/BufferSizeExceededException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
using namespace ::com::sun::star;
using namespace com::sun::star::uno;
using namespace com::sun::star::io;
using com::sun::star::lang::IllegalArgumentException;
#if OSL_DEBUG_LEVEL > 0
#define THROW_WHERE SAL_WHERE
#else
#define THROW_WHERE ""
#endif
ZipPackageBuffer::ZipPackageBuffer()
: m_nBufferSize (n_ConstBufferSize)
, m_nEnd(0)
, m_nCurrent(0)
, m_bMustInitBuffer ( true )
{
}
ZipPackageBuffer::~ZipPackageBuffer()
{
}
sal_Int32 SAL_CALL ZipPackageBuffer::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
{
if (nBytesToRead < 0)
throw BufferSizeExceededException(THROW_WHERE, *this );
if (nBytesToRead + m_nCurrent > m_nEnd)
nBytesToRead = static_cast < sal_Int32 > (m_nEnd - m_nCurrent);
aData.realloc ( nBytesToRead );
memcpy(aData.getArray(), m_aBuffer.getConstArray() + m_nCurrent, nBytesToRead);
m_nCurrent +=nBytesToRead;
return nBytesToRead;
}
sal_Int32 SAL_CALL ZipPackageBuffer::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
{
return readBytes(aData, nMaxBytesToRead);
}
void SAL_CALL ZipPackageBuffer::skipBytes( sal_Int32 nBytesToSkip )
{
if (nBytesToSkip < 0)
throw BufferSizeExceededException(THROW_WHERE, *this );
if (nBytesToSkip + m_nCurrent > m_nEnd)
nBytesToSkip = static_cast < sal_Int32 > (m_nEnd - m_nCurrent);
m_nCurrent+=nBytesToSkip;
}
sal_Int32 SAL_CALL ZipPackageBuffer::available( )
{
return std::min<sal_Int64>(SAL_MAX_INT32, m_nEnd - m_nCurrent);
}
void SAL_CALL ZipPackageBuffer::closeInput( )
{
}
void SAL_CALL ZipPackageBuffer::writeBytes( const Sequence< sal_Int8 >& aData )
{
sal_Int64 nDataLen = aData.getLength(), nCombined = m_nEnd + nDataLen;
if ( nCombined > m_nBufferSize)
{
do
m_nBufferSize *=2;
while (nCombined > m_nBufferSize);
m_aBuffer.realloc(static_cast < sal_Int32 > (m_nBufferSize));
m_bMustInitBuffer = false;
}
else if (m_bMustInitBuffer)
{
m_aBuffer.realloc ( static_cast < sal_Int32 > ( m_nBufferSize ) );
m_bMustInitBuffer = false;
}
memcpy( m_aBuffer.getArray() + m_nCurrent, aData.getConstArray(), static_cast < sal_Int32 > (nDataLen));
m_nCurrent+=nDataLen;
if (m_nCurrent>m_nEnd)
m_nEnd = m_nCurrent;
}
void SAL_CALL ZipPackageBuffer::flush( )
{
}
void SAL_CALL ZipPackageBuffer::closeOutput( )
{
}
void SAL_CALL ZipPackageBuffer::seek( sal_Int64 location )
{
if ( location > m_nEnd || location < 0 )
throw IllegalArgumentException(THROW_WHERE, uno::Reference< uno::XInterface >(), 1 );
m_nCurrent = location;
}
sal_Int64 SAL_CALL ZipPackageBuffer::getPosition( )
{
return m_nCurrent;
}
sal_Int64 SAL_CALL ZipPackageBuffer::getLength( )
{
return m_nEnd;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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