libreoffice/oox/source/core/relationshandler.cxx

/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: relationshandler.cxx,v $
 * $Revision: 1.4 $
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
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#include "oox/core/relationshandler.hxx"
#include <rtl/ustrbuf.hxx>
#include "oox/core/namespaces.hxx"
#include "tokens.hxx"

using ::rtl::OUString;
using ::rtl::OUStringBuffer;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::xml::sax;

namespace oox {
namespace core {

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

namespace {

/*  Build path to relations file from passed path, e.g.:
        'path/path/file.xml'    -> 'path/path/_rels/file.xml.rels'
        'file.xml'              -> '_rels/file.xml.rels'
        ''                      -> '_rels/.rels'
 */
OUString lclGetRelationsPath( const OUString& rFragmentPath )
{
    sal_Int32 nPathLen = ::std::max< sal_Int32 >( rFragmentPath.lastIndexOf( '/' ) + 1, 0 );
    return
        OUStringBuffer( rFragmentPath.copy( 0, nPathLen ) ).    // file path including slash
        appendAscii( "_rels/" ).                                // additional '_rels/' path
        append( rFragmentPath.copy( nPathLen ) ).               // file name after path
        appendAscii( ".rels" ).                                 // '.rels' suffix
        makeStringAndClear();
}

} // namespace

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

RelationsFragmentHandler::RelationsFragmentHandler( XmlFilterBase& rFilter, RelationsRef xRelations ) :
    FragmentHandler( rFilter, lclGetRelationsPath( xRelations->getBasePath() ), xRelations ),
    mxRelations( xRelations )
{
}

Reference< XFastContextHandler > RelationsFragmentHandler::createFastChildContext(
        sal_Int32 nElement, const Reference< XFastAttributeList >& rxAttribs ) throw (SAXException, RuntimeException)
{
    Reference< XFastContextHandler > xRet;
    switch( nElement )
    {
        case NMSP_PACKAGE_RELATIONSHIPS|XML_Relationship:
        {
            Relation aRelation;
            aRelation.maId     = rxAttribs->getOptionalValue( XML_Id );
            aRelation.maType   = rxAttribs->getOptionalValue( XML_Type );
            aRelation.maTarget = rxAttribs->getOptionalValue( XML_Target );
            if( (aRelation.maId.getLength() > 0) && (aRelation.maType.getLength() > 0) && (aRelation.maTarget.getLength() > 0) )
                (*mxRelations)[ aRelation.maId ] = aRelation;
        }
        break;
        case NMSP_PACKAGE_RELATIONSHIPS|XML_Relationships:
            xRet = getFastContextHandler();
        break;
    }
    return xRet;
}

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

} // namespace core
} // namespace oox