245 lines
8.8 KiB
C++
245 lines
8.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "DomBuilderContext.hxx"
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#include <xmloff/nmspmap.hxx>
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#include <xmloff/xmlimp.hxx>
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#include <xmloff/xmlerror.hxx>
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#include <com/sun/star/lang/XMultiServiceFactory.hpp>
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#include <com/sun/star/uno/Reference.hxx>
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#include <com/sun/star/uno/Sequence.hxx>
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#include <com/sun/star/xml/dom/XAttr.hpp>
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#include <com/sun/star/xml/dom/DocumentBuilder.hpp>
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#include <com/sun/star/xml/dom/XNode.hpp>
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#include <com/sun/star/xml/dom/XElement.hpp>
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#include <com/sun/star/xml/sax/XAttributeList.hpp>
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#include <com/sun/star/xml/dom/NodeType.hpp>
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#include <rtl/ustring.hxx>
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#include <tools/debug.hxx>
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#include <comphelper/processfactory.hxx>
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using com::sun::star::lang::XMultiServiceFactory;
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using com::sun::star::uno::XComponentContext;
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using com::sun::star::uno::Reference;
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using com::sun::star::uno::Sequence;
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using com::sun::star::uno::UNO_QUERY;
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using com::sun::star::uno::UNO_QUERY_THROW;
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using com::sun::star::xml::dom::DocumentBuilder;
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using com::sun::star::xml::dom::XAttr;
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using com::sun::star::xml::dom::XDocument;
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using com::sun::star::xml::dom::XDocumentBuilder;
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using com::sun::star::xml::dom::XNode;
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using com::sun::star::xml::dom::XElement;
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using com::sun::star::xml::sax::XAttributeList;
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using com::sun::star::xml::dom::NodeType_ELEMENT_NODE;
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// helper functions; implemented below
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static Reference<XNode> lcl_createDomInstance();
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static Reference<XNode> lcl_createElement( SvXMLImport& rImport,
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sal_uInt16 nPrefix,
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const OUString& rLocalName,
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Reference<XNode> xParent);
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DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
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sal_uInt16 nPrefix,
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const OUString& rLocalName ) :
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SvXMLImportContext( rImport, nPrefix, rLocalName ),
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mxNode( lcl_createElement( rImport, nPrefix, rLocalName,
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lcl_createDomInstance() ) )
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{
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DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
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DBG_ASSERT( Reference<XElement>( mxNode, UNO_QUERY ).is(), "need element" );
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DBG_ASSERT( mxNode->getNodeType() == NodeType_ELEMENT_NODE, "need element" );
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}
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DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
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sal_uInt16 nPrefix,
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const OUString& rLocalName,
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Reference<XNode>& xParent ) :
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SvXMLImportContext( rImport, nPrefix, rLocalName ),
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mxNode( lcl_createElement( rImport, nPrefix, rLocalName, xParent ) )
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{
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DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
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DBG_ASSERT( Reference<XElement>( mxNode, UNO_QUERY ).is(), "need element" );
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DBG_ASSERT( mxNode->getNodeType() == NodeType_ELEMENT_NODE, "need element" );
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}
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DomBuilderContext::~DomBuilderContext()
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{
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}
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Reference<XDocument> DomBuilderContext::getTree()
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{
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DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
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return mxNode->getOwnerDocument();
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}
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SvXMLImportContext* DomBuilderContext::CreateChildContext(
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sal_uInt16 nPrefix,
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const OUString& rLocalName,
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const Reference<XAttributeList>& )
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{
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// create DomBuilder for subtree
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return new DomBuilderContext( GetImport(), nPrefix, rLocalName, mxNode );
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}
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void DomBuilderContext::StartElement(
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const Reference<XAttributeList>& xAttrList )
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{
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DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
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DBG_ASSERT( mxNode->getOwnerDocument().is(), "XNode must have XDocument" );
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// add attribute nodes to new node
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sal_Int16 nAttributeCount = xAttrList->getLength();
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for( sal_Int16 i = 0; i < nAttributeCount; i++ )
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{
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// get name & value for attribute
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const OUString& rName = xAttrList->getNameByIndex( i );
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const OUString& rValue = xAttrList->getValueByIndex( i );
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// namespace handling: determine namespace & namespace keykey
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OUString sNamespace;
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sal_uInt16 nNamespaceKey =
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GetImport().GetNamespaceMap()._GetKeyByAttrName(
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rName, NULL, NULL, &sNamespace );
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// create attribute node and set value
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Reference<XElement> xElement( mxNode, UNO_QUERY_THROW );
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switch( nNamespaceKey )
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{
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case XML_NAMESPACE_NONE:
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// no namespace: create a non-namespaced attribute
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xElement->setAttribute( rName, rValue );
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break;
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case XML_NAMESPACE_XMLNS:
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// namespace declaration: ignore, since the DOM tree handles these
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// declarations implicitly
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break;
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case XML_NAMESPACE_UNKNOWN:
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// unknown namespace: illegal input. Raise Warning.
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{
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Sequence<OUString> aSeq(2);
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aSeq[0] = rName;
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aSeq[1] = rValue;
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GetImport().SetError(
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XMLERROR_FLAG_WARNING | XMLERROR_NAMESPACE_TROUBLE, aSeq );
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}
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break;
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default:
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// a real and proper namespace: create namespaced attribute
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xElement->setAttributeNS( sNamespace, rName, rValue );
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break;
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}
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}
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}
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void DomBuilderContext::EndElement()
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{
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// nothing to be done!
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}
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void DomBuilderContext::Characters( const OUString& rCharacters )
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{
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DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
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// TODO: I assume adjacent text nodes should be joined, to preserve
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// processinf model? (I.e., if the SAX parser breaks a string into 2
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// Characters(..) calls, the DOM model would still see only one child.)
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// create text node and append to parent
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Reference<XNode> xNew(
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mxNode->getOwnerDocument()->createTextNode( rCharacters ),
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UNO_QUERY_THROW );
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mxNode->appendChild( xNew );
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}
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// helper function implementations
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static Reference<XNode> lcl_createDomInstance()
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{
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Reference<XComponentContext> xContext = comphelper::getProcessComponentContext();
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DBG_ASSERT( xContext.is(), "can't get service factory" );
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Reference<XDocumentBuilder> xBuilder( DocumentBuilder::create(xContext) );
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return Reference<XNode>( xBuilder->newDocument(), UNO_QUERY_THROW );
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}
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static Reference<XNode> lcl_createElement( SvXMLImport& rImport,
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sal_uInt16 nPrefix,
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const OUString& rLocalName,
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Reference<XNode> xParent)
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{
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DBG_ASSERT( xParent.is(), "need parent node" );
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Reference<XDocument> xDocument = xParent->getOwnerDocument();
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DBG_ASSERT( xDocument.is(), "no XDocument found!" );
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// TODO: come up with proper way of handling namespaces; re-creating the
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// namespace from the key is NOT a good idea, and will not work for
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// multiple prefixes for the same namespace. Fortunately, those are rare.
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Reference<XElement> xElement;
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switch( nPrefix )
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{
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case XML_NAMESPACE_NONE:
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// no namespace: use local name
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xElement = xDocument->createElement( rLocalName );
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break;
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case XML_NAMESPACE_XMLNS:
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case XML_NAMESPACE_UNKNOWN:
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// both cases are illegal; raise warning (and use only local name)
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xElement = xDocument->createElement( rLocalName );
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{
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Sequence<OUString> aSeq(1);
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aSeq[0] = rLocalName;
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rImport.SetError(
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XMLERROR_FLAG_WARNING | XMLERROR_NAMESPACE_TROUBLE, aSeq );
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}
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break;
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default:
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// We are only given the prefix and the local name; thus we have to ask
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// the namespace map to create a qualified name for us. Technically,
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// this is a bug, since this will fail for multiple prefixes used for
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// the same namespace.
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xElement = xDocument->createElementNS(
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rImport.GetNamespaceMap().GetNameByKey( nPrefix ),
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rImport.GetNamespaceMap().GetQNameByKey( nPrefix, rLocalName ) );
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break;
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}
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DBG_ASSERT( xElement.is(), "can't create element" );
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// add new element to parent and return
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xParent->appendChild( xElement );
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return xElement;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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