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Diffstat (limited to 'xmloff/source/core/DomExport.cxx')
| -rw-r--r-- | xmloff/source/core/DomExport.cxx | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/xmloff/source/core/DomExport.cxx b/xmloff/source/core/DomExport.cxx new file mode 100644 index 000000000..9d26d68b1 --- /dev/null +++ b/xmloff/source/core/DomExport.cxx @@ -0,0 +1,249 @@ +/* -*- 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 <DomExport.hxx> + +#include <xmloff/namespacemap.hxx> +#include <xmloff/xmlexp.hxx> +#include <xmloff/xmlerror.hxx> + +#include <com/sun/star/uno/Reference.hxx> +#include <com/sun/star/xml/dom/XAttr.hpp> +#include <com/sun/star/xml/dom/XNode.hpp> +#include <com/sun/star/xml/dom/XElement.hpp> +#include <com/sun/star/xml/dom/NodeType.hpp> +#include <com/sun/star/xml/dom/XNamedNodeMap.hpp> + +#include <rtl/ustring.hxx> +#include <rtl/ustrbuf.hxx> +#include <sal/log.hxx> +#include <osl/diagnose.h> + + +#include <vector> + + +using com::sun::star::uno::Reference; +using com::sun::star::uno::UNO_QUERY_THROW; +using std::vector; + +using namespace com::sun::star::xml::dom; + +namespace { + +class DomVisitor +{ +public: + DomVisitor() {} + virtual ~DomVisitor() {} + virtual void element( const Reference<XElement>& ) {} + virtual void character( const Reference<XCharacterData>& ) {} + virtual void endElement( const Reference<XElement>& ) {} +}; + +} + +static void visit( DomVisitor&, const Reference<XDocument>& ); +static void visit( DomVisitor&, const Reference<XNode>& ); + + +static void visitNode( DomVisitor& rVisitor, const Reference<XNode>& xNode ) +{ + switch( xNode->getNodeType() ) + { + case NodeType_ATTRIBUTE_NODE: + break; + case NodeType_CDATA_SECTION_NODE: + break; + case NodeType_COMMENT_NODE: + break; + case NodeType_DOCUMENT_FRAGMENT_NODE: + break; + case NodeType_DOCUMENT_NODE: + break; + case NodeType_DOCUMENT_TYPE_NODE: + break; + case NodeType_ELEMENT_NODE: + rVisitor.element( Reference<XElement>( xNode, UNO_QUERY_THROW ) ); + break; + case NodeType_ENTITY_NODE: + break; + case NodeType_ENTITY_REFERENCE_NODE: + break; + case NodeType_NOTATION_NODE: + break; + case NodeType_PROCESSING_INSTRUCTION_NODE: + break; + case NodeType_TEXT_NODE: + rVisitor.character( Reference<XCharacterData>( xNode, UNO_QUERY_THROW ) ); + break; + default: + OSL_FAIL( "unknown DOM node type" ); + break; + } +} + +void visit( DomVisitor& rVisitor, const Reference<XDocument>& xDocument ) +{ + visit( rVisitor, Reference<XNode>( xDocument, UNO_QUERY_THROW ) ); +} + +void visit( DomVisitor& rVisitor, const Reference<XNode>& xNode ) +{ + visitNode( rVisitor, xNode ); + for( Reference<XNode> xChild = xNode->getFirstChild(); + xChild.is(); + xChild = xChild->getNextSibling() ) + { + visit( rVisitor, xChild ); + } + if( xNode->getNodeType() == NodeType_ELEMENT_NODE ) + rVisitor.endElement( Reference<XElement>( xNode, UNO_QUERY_THROW ) ); +} + +namespace { + +class DomExport: public DomVisitor +{ + SvXMLExport& mrExport; + vector<SvXMLNamespaceMap> maNamespaces; + + void pushNamespace(); + void addNamespace( const OUString& sPrefix, const OUString& sURI ); + OUString qualifiedName( const OUString& sPrefix, const OUString& sURI, + std::u16string_view sLocalName ); + OUString qualifiedName( const Reference<XElement>& ); + OUString qualifiedName( const Reference<XAttr>& ); + void addAttribute( const Reference<XAttr>& ); + +public: + + explicit DomExport( SvXMLExport& rExport ); + virtual ~DomExport() override; + + virtual void element( const Reference<XElement>& ) override; + virtual void endElement( const Reference<XElement>& ) override; + virtual void character( const Reference<XCharacterData>& ) override; +}; + +} + +DomExport::DomExport( SvXMLExport& rExport ) : + mrExport( rExport ) +{ + maNamespaces.push_back( rExport.GetNamespaceMap() ); +} + +DomExport::~DomExport() +{ + SAL_WARN_IF( maNamespaces.size() != 1, "xmloff", "namespace missing" ); + maNamespaces.clear(); +} + +void DomExport::pushNamespace() +{ + SvXMLNamespaceMap const aMap(maNamespaces.back()); + maNamespaces.push_back(aMap); +} + +void DomExport::addNamespace( const OUString& sPrefix, const OUString& sURI ) +{ + SvXMLNamespaceMap& rMap = maNamespaces.back(); + sal_uInt16 nKey = rMap.GetKeyByPrefix( sPrefix ); + + // we need to register the namespace, if either the prefix isn't known or + // is used for a different namespace + if( nKey == XML_NAMESPACE_UNKNOWN || + rMap.GetNameByKey( nKey ) != sURI ) + { + // add prefix to map, and add declaration + rMap.Add( sPrefix, sURI ); + mrExport.AddAttribute( "xmlns:" + sPrefix, sURI ); + } +} + +OUString DomExport::qualifiedName( const OUString& sPrefix, + const OUString& sURI, + std::u16string_view sLocalName ) +{ + OUStringBuffer sBuffer; + if( !sPrefix.isEmpty() && !sURI.isEmpty() ) + { + addNamespace( sPrefix, sURI ); + sBuffer.append( sPrefix ); + sBuffer.append( ':' ); + } + sBuffer.append( sLocalName ); + return sBuffer.makeStringAndClear(); +} + +OUString DomExport::qualifiedName( const Reference<XElement>& xElement ) +{ + return qualifiedName( xElement->getPrefix(), xElement->getNamespaceURI(), + xElement->getNodeName() ); +} + +OUString DomExport::qualifiedName( const Reference<XAttr>& xAttr ) +{ + return qualifiedName( xAttr->getPrefix(), xAttr->getNamespaceURI(), + xAttr->getNodeName() ); +} + +void DomExport::addAttribute( const Reference<XAttr>& xAttribute ) +{ + mrExport.AddAttribute( qualifiedName( xAttribute ), + xAttribute->getNodeValue() ); +} + +void DomExport::element( const Reference<XElement>& xElement ) +{ + pushNamespace(); + + // write attributes + Reference<XNamedNodeMap> xAttributes = xElement->getAttributes(); + sal_Int32 nLength = xAttributes.is() ? xAttributes->getLength() : 0; + for( sal_Int32 n = 0; n < nLength; n++ ) + { + addAttribute( Reference<XAttr>( xAttributes->item( n ), UNO_QUERY_THROW ) ); + } + + // write name + mrExport.StartElement( qualifiedName( xElement ), false ); +} + +void DomExport::endElement( const Reference<XElement>& xElement ) +{ + mrExport.EndElement( qualifiedName( xElement ), false ); + maNamespaces.pop_back(); +} + +void DomExport::character( const Reference<XCharacterData>& xChars ) +{ + mrExport.Characters( xChars->getNodeValue() ); +} + + +void exportDom( SvXMLExport& rExport, const Reference<XDocument>& xDocument ) +{ + DomExport aDomExport( rExport ); + visit( aDomExport, xDocument ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |