/**************************************************************
 * 
 * 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
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 *************************************************************/



#include "oox/core/fastparser.hxx"

#include "oox/core/fasttokenhandler.hxx"
#include "oox/helper/containerhelper.hxx"
#include "oox/helper/helper.hxx"
#include "oox/helper/storagebase.hxx"
#include "oox/token/namespacemap.hxx"

namespace oox {
namespace core {

// ============================================================================

using namespace ::com::sun::star::io;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::xml::sax;

using ::rtl::OUString;

// ============================================================================

namespace {

class InputStreamCloseGuard
{
public:
    explicit            InputStreamCloseGuard( const Reference< XInputStream >& rxInStream, bool bCloseStream );
                        ~InputStreamCloseGuard();
private:
    Reference< XInputStream > mxInStream;
    bool                mbCloseStream;
};

InputStreamCloseGuard::InputStreamCloseGuard( const Reference< XInputStream >& rxInStream, bool bCloseStream ) :
    mxInStream( rxInStream ),
    mbCloseStream( bCloseStream )
{
}

InputStreamCloseGuard::~InputStreamCloseGuard()
{
    if( mxInStream.is() && mbCloseStream ) try { mxInStream->closeInput(); } catch( Exception& ) {}
}

} // namespace

// ============================================================================

FastParser::FastParser( const Reference< XComponentContext >& rxContext ) throw( RuntimeException ) :
    mrNamespaceMap( StaticNamespaceMap::get() )
{
    // create a fast parser instance
    Reference< XMultiComponentFactory > xFactory( rxContext->getServiceManager(), UNO_SET_THROW );
    mxParser.set( xFactory->createInstanceWithContext( CREATE_OUSTRING( "com.sun.star.xml.sax.FastParser" ), rxContext ), UNO_QUERY_THROW );

    // create the fast token handler based on the OOXML token list
    mxParser->setTokenHandler( new FastTokenHandler );
}

FastParser::~FastParser()
{
}

void FastParser::registerNamespace( sal_Int32 nNamespaceId ) throw( IllegalArgumentException, RuntimeException )
{
    if( !mxParser.is() )
        throw RuntimeException();

    const OUString* pNamespaceUrl = ContainerHelper::getMapElement( mrNamespaceMap, nNamespaceId );
    if( !pNamespaceUrl )
        throw IllegalArgumentException();

    mxParser->registerNamespace( *pNamespaceUrl, nNamespaceId );
}

void FastParser::setDocumentHandler( const Reference< XFastDocumentHandler >& rxDocHandler ) throw( RuntimeException )
{
    if( !mxParser.is() )
        throw RuntimeException();
    mxParser->setFastDocumentHandler( rxDocHandler );
}

void FastParser::parseStream( const InputSource& rInputSource, bool bCloseStream ) throw( SAXException, IOException, RuntimeException )
{
    // guard closing the input stream also when exceptions are thrown
    InputStreamCloseGuard aGuard( rInputSource.aInputStream, bCloseStream );
    if( !mxParser.is() )
        throw RuntimeException();
    mxParser->parseStream( rInputSource );
}

void FastParser::parseStream( const Reference< XInputStream >& rxInStream, const OUString& rStreamName, bool bCloseStream ) throw( SAXException, IOException, RuntimeException )
{
    InputSource aInputSource;
    aInputSource.sSystemId = rStreamName;
    aInputSource.aInputStream = rxInStream;
    parseStream( aInputSource, bCloseStream );
}

void FastParser::parseStream( StorageBase& rStorage, const OUString& rStreamName, bool bCloseStream ) throw( SAXException, IOException, RuntimeException )
{
    parseStream( rStorage.openInputStream( rStreamName ), rStreamName, bCloseStream );
}

// ============================================================================

} // namespace core
} // namespace oox