xref: /AOO41X/main/ucb/source/ucp/odma/odma_inputstream.cxx (revision 2f86921c33504fdff5a030df6c0b258927045abb)

/**************************************************************
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_ucb.hxx"
#include "odma_inputstream.hxx"
#include "com/sun/star/io/IOException.hpp"
#include <com/sun/star/ucb/OpenCommandArgument2.hpp>
#include <com/sun/star/ucb/OpenMode.hpp>
#include <ucbhelper/content.hxx>
#include <com/sun/star/io/XActiveDataStreamer.hpp>
#include <cppuhelper/implbase1.hxx>
#include "odma_contentprops.hxx"
#include "odma_provider.hxx"

using namespace odma;
using namespace com::sun::star;

class OActiveDataStreamer : public ::cppu::WeakImplHelper1< io::XActiveDataStreamer>
{
	uno::Reference< io::XStream > m_xStream;
public:
	OActiveDataStreamer(){}
	virtual void SAL_CALL setStream( const uno::Reference< io::XStream >& _rStream ) throw (uno::RuntimeException)
	{
		m_xStream = _rStream;
	}
    virtual uno::Reference< io::XStream > SAL_CALL getStream(  ) throw (uno::RuntimeException)
	{
		return m_xStream;
	}
};
// -----------------------------------------------------------------------------
OOdmaStream::OOdmaStream(::ucbhelper::Content* _pContent,
						 ContentProvider* _pProvider,
						 const ::rtl::Reference<ContentProperties>& _rProp)
 :m_pContent(_pContent)
 ,m_bInputStreamCalled(sal_False)
 ,m_bOutputStreamCalled(sal_False)
 ,m_bModified(sal_False)
 ,m_pProvider(_pProvider)
 ,m_aProp(_rProp)
{
}
// -----------------------------------------------------------------------------
OOdmaStream::~OOdmaStream()
{
    try
    {
        closeStream();
		delete m_pContent;
    }
    catch (io::IOException const &)
    {
        OSL_ENSURE(false, "unexpected situation");
    }
    catch (uno::RuntimeException const &)
    {
        OSL_ENSURE(false, "unexpected situation");
    }
}
// -----------------------------------------------------------------------------
uno::Reference< io::XInputStream > SAL_CALL OOdmaStream::getInputStream(  ) throw( uno::RuntimeException)
{
	{
		osl::MutexGuard aGuard( m_aMutex );
		m_bInputStreamCalled = sal_True;
	}
	return uno::Reference< io::XInputStream >( this );
}
// -----------------------------------------------------------------------------
uno::Reference< io::XOutputStream > SAL_CALL OOdmaStream::getOutputStream(  ) throw( uno::RuntimeException )
{
	{
		osl::MutexGuard aGuard( m_aMutex );
		m_bOutputStreamCalled = sal_True;
	}
	return uno::Reference< io::XOutputStream >( this );
}
// -----------------------------------------------------------------------------
sal_Int32 SAL_CALL OOdmaStream::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
	throw( io::NotConnectedException,
		   io::BufferSizeExceededException,
		   io::IOException,
		   uno::RuntimeException)
{
	ensureInputStream();

	return m_xInput->readBytes(aData,nBytesToRead);
}
// -----------------------------------------------------------------------------
sal_Int32 SAL_CALL OOdmaStream::readSomeBytes( uno::Sequence< sal_Int8 >& aData,sal_Int32 nMaxBytesToRead )
	throw( io::NotConnectedException,
		   io::BufferSizeExceededException,
		   io::IOException,
		   uno::RuntimeException)
{
	return readBytes( aData,nMaxBytesToRead );
}
// -----------------------------------------------------------------------------
void SAL_CALL OOdmaStream::skipBytes( sal_Int32 nBytesToSkip )
	throw( io::NotConnectedException,
		   io::BufferSizeExceededException,
		   io::IOException,
		   uno::RuntimeException )
{
	ensureInputStream();
	m_xInput->skipBytes(nBytesToSkip );
}
// -----------------------------------------------------------------------------
sal_Int32 SAL_CALL OOdmaStream::available()
	throw( io::NotConnectedException,
		   io::IOException,
		   uno::RuntimeException)
{
	ensureInputStream();
	return m_xInput->available();
}
// -----------------------------------------------------------------------------
void SAL_CALL OOdmaStream::writeBytes( const uno::Sequence< sal_Int8 >& aData )
	throw( io::NotConnectedException,
		   io::BufferSizeExceededException,
		   io::IOException,
		   uno::RuntimeException)
{
	ensureOutputStream();
	m_xOutput->writeBytes(aData);
	m_bModified = sal_True;
}
// -----------------------------------------------------------------------------
void SAL_CALL OOdmaStream::closeStream() throw( io::NotConnectedException,io::IOException,uno::RuntimeException )
{
	if( m_xInput.is() )
	{
		m_xInput->closeInput();
		m_xInput		= NULL;
		m_xInputSeek	= NULL;
	}
	if(m_xOutput.is())
	{
		m_xOutput->closeOutput();
		m_xOutput		= NULL;
		m_xTruncate		= NULL;
		if(m_bModified)
			m_pProvider->saveDocument(m_aProp->m_sDocumentId);
	}
}
// -----------------------------------------------------------------------------
void SAL_CALL OOdmaStream::closeInput()
	throw( io::NotConnectedException,
		   io::IOException,
		   uno::RuntimeException )
{
	osl::MutexGuard aGuard( m_aMutex );
	m_bInputStreamCalled = sal_False;

	if( ! m_bOutputStreamCalled )
		closeStream();
}
// -----------------------------------------------------------------------------
void SAL_CALL OOdmaStream::closeOutput()
	throw( io::NotConnectedException,
		   io::IOException,
		   uno::RuntimeException )
{
	osl::MutexGuard aGuard( m_aMutex );
	m_bOutputStreamCalled = sal_False;

	if( ! m_bInputStreamCalled )
		closeStream();
}
// -----------------------------------------------------------------------------
void SAL_CALL OOdmaStream::flush()
	throw( io::NotConnectedException,
		   io::BufferSizeExceededException,
		   io::IOException,
		   uno::RuntimeException )
{
	ensureOutputStream();
	m_xOutput->flush();
}
// -----------------------------------------------------------------------------
void OOdmaStream::ensureInputStream() throw( io::IOException )
{
	try
	{
		if(!m_xInput.is())
		{
			m_xInput = m_pContent->openStream();
			m_xInputSeek = uno::Reference< io::XSeekable>(m_xInput,uno::UNO_QUERY);
		}
	}
	catch(const uno::Exception&)
	{
	}
	if(!m_xInput.is())
		throw io::IOException();
}
// -----------------------------------------------------------------------------
void OOdmaStream::ensureOutputStream() throw( io::IOException )
{
	try
	{
		if(!m_xOutput.is())
		{
			ucb::OpenCommandArgument2 aCommand;
			aCommand.Mode = ucb::OpenMode::DOCUMENT;
			uno::Reference< io::XActiveDataStreamer > xActiveStreamer = new OActiveDataStreamer();
			aCommand.Sink = xActiveStreamer;
			m_pContent->executeCommand(::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("open")),uno::makeAny(aCommand));
			if(xActiveStreamer.is())
			{
				uno::Reference< io::XStream> xStream = xActiveStreamer->getStream();
				if(xStream.is())
					m_xOutput = xStream->getOutputStream();
			}
		}
	}
	catch(const uno::Exception&)
	{
	}
	if(!m_xOutput.is())
		throw io::IOException();
	m_xTruncate = uno::Reference< io::XTruncate>(m_xOutput,uno::UNO_QUERY);
}
// -----------------------------------------------------------------------------
// XTruncate
void SAL_CALL OOdmaStream::truncate( void )
	throw( io::IOException,
		   uno::RuntimeException )
{
	if(m_xTruncate.is())
		m_xTruncate->truncate();
}
// -----------------------------------------------------------------------------
// XSeekable
void SAL_CALL OOdmaStream::seek(sal_Int64 location )
	throw( lang::IllegalArgumentException,
		   io::IOException,
		   uno::RuntimeException )
{
	ensureInputStream();
	if(m_xInputSeek.is())
		m_xInputSeek->seek(location);
}
// -----------------------------------------------------------------------------
sal_Int64 SAL_CALL OOdmaStream::getPosition()
	throw( io::IOException,
		   uno::RuntimeException )
{
	ensureInputStream();
	return m_xInputSeek.is() ? m_xInputSeek->getPosition() : sal_Int64(0);
}
// -----------------------------------------------------------------------------
sal_Int64 SAL_CALL OOdmaStream::getLength()
	throw( io::IOException,
		   uno::RuntimeException )
{
	ensureInputStream();
	return m_xInputSeek.is() ? m_xInputSeek->getLength() : sal_Int64(0);
}
// -----------------------------------------------------------------------------