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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 <comphelper/streamsection.hxx>
#include <com/sun/star/io/XMarkableStream.hpp>
#include <com/sun/star/io/XDataInputStream.hpp>
#include <com/sun/star/io/XDataOutputStream.hpp>
#include <osl/diagnose.h>
namespace comphelper
{
OStreamSection::OStreamSection(const css::uno::Reference< css::io::XDataInputStream >& _rxInput)
:m_xMarkStream(_rxInput, css::uno::UNO_QUERY)
,m_xInStream(_rxInput)
,m_nBlockStart(-1)
,m_nBlockLen(-1)
{
OSL_ENSURE(m_xInStream.is() && m_xMarkStream.is(), "OStreamSection::OStreamSection : invalid argument !");
if (m_xInStream.is() && m_xMarkStream.is())
{
m_nBlockLen = _rxInput->readLong();
m_nBlockStart = m_xMarkStream->createMark();
}
}
OStreamSection::OStreamSection(const css::uno::Reference< css::io::XDataOutputStream >& _rxOutput)
:m_xMarkStream(_rxOutput, css::uno::UNO_QUERY)
,m_xOutStream(_rxOutput)
,m_nBlockStart(-1)
,m_nBlockLen(-1)
{
OSL_ENSURE(m_xOutStream.is() && m_xMarkStream.is(), "OStreamSection::OStreamSection : invalid argument !");
if (m_xOutStream.is() && m_xMarkStream.is())
{
m_nBlockStart = m_xMarkStream->createMark();
m_nBlockLen = 0;
m_xOutStream->writeLong(m_nBlockLen);
}
}
OStreamSection::~OStreamSection()
{
try
{ // don't allow any exceptions to leave this block, this may be called during the stack unwinding of an exception
// handling routing
if (m_xInStream.is() && m_xMarkStream.is())
{ // we're working on an input stream
m_xMarkStream->jumpToMark(m_nBlockStart);
m_xInStream->skipBytes(m_nBlockLen);
m_xMarkStream->deleteMark(m_nBlockStart);
}
else if (m_xOutStream.is() && m_xMarkStream.is())
{
sal_Int32 nRealBlockLength = m_xMarkStream->offsetToMark(m_nBlockStart) - sizeof(m_nBlockLen);
m_nBlockLen = nRealBlockLength;
m_xMarkStream->jumpToMark(m_nBlockStart);
m_xOutStream->writeLong(m_nBlockLen);
m_xMarkStream->jumpToFurthest();
m_xMarkStream->deleteMark(m_nBlockStart);
}
}
catch(const css::uno::Exception&)
{
}
}
} // namespace comphelper
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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