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/* -*- 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 <DomBuilderContext.hxx>
#include <xmloff/namespacemap.hxx>
#include <xmloff/xmlimp.hxx>
#include <xmloff/xmlerror.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/xml/dom/DocumentBuilder.hpp>
#include <com/sun/star/xml/dom/XNode.hpp>
#include <com/sun/star/xml/dom/XElement.hpp>
#include <com/sun/star/xml/sax/XAttributeList.hpp>
#include <com/sun/star/xml/dom/NodeType.hpp>
#include <rtl/ustring.hxx>
#include <sal/log.hxx>
#include <comphelper/processfactory.hxx>
using com::sun::star::uno::XComponentContext;
using com::sun::star::uno::Reference;
using com::sun::star::uno::Sequence;
using com::sun::star::uno::UNO_QUERY;
using com::sun::star::uno::UNO_QUERY_THROW;
using com::sun::star::xml::dom::DocumentBuilder;
using com::sun::star::xml::dom::XDocument;
using com::sun::star::xml::dom::XDocumentBuilder;
using com::sun::star::xml::dom::XNode;
using com::sun::star::xml::dom::XElement;
using com::sun::star::xml::sax::XAttributeList;
using com::sun::star::xml::dom::NodeType_ELEMENT_NODE;
// helper functions; implemented below
static Reference<XNode> lcl_createDomInstance();
static Reference<XNode> lcl_createElement( SvXMLImport& rImport,
sal_Int32 nElement,
const Reference<XNode>& xParent);
static Reference<XNode> lcl_createElement(
const OUString & rNamespace, const OUString & rName,
const Reference<XNode>& xParent);
DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
sal_Int32 nElement ) :
SvXMLImportContext( rImport ),
mxNode( lcl_createElement( rImport, nElement,
lcl_createDomInstance() ) )
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
SAL_WARN_IF( !Reference<XElement>( mxNode, UNO_QUERY ).is(), "xmloff", "need element" );
SAL_WARN_IF( mxNode->getNodeType() != NodeType_ELEMENT_NODE, "xmloff", "need element" );
}
DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
const OUString & rNamespace, const OUString & rName ) :
SvXMLImportContext( rImport ),
mxNode( lcl_createElement( rNamespace, rName,
lcl_createDomInstance() ) )
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
SAL_WARN_IF( !Reference<XElement>( mxNode, UNO_QUERY ).is(), "xmloff", "need element" );
SAL_WARN_IF( mxNode->getNodeType() != NodeType_ELEMENT_NODE, "xmloff", "need element" );
}
DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
sal_Int32 nElement,
Reference<XNode> const & xParent ) :
SvXMLImportContext( rImport ),
mxNode( lcl_createElement( rImport, nElement, xParent ) )
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
SAL_WARN_IF( !Reference<XElement>( mxNode, UNO_QUERY ).is(), "xmloff", "need element" );
SAL_WARN_IF( mxNode->getNodeType() != NodeType_ELEMENT_NODE, "xmloff", "need element" );
}
DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
const OUString & rNamespace, const OUString & rName,
Reference<XNode> const & xParent ) :
SvXMLImportContext( rImport ),
mxNode( lcl_createElement( rNamespace, rName, xParent ) )
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
SAL_WARN_IF( !Reference<XElement>( mxNode, UNO_QUERY ).is(), "xmloff", "need element" );
SAL_WARN_IF( mxNode->getNodeType() != NodeType_ELEMENT_NODE, "xmloff", "need element" );
}
DomBuilderContext::~DomBuilderContext()
{
}
Reference<XDocument> DomBuilderContext::getTree()
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
return mxNode->getOwnerDocument();
}
css::uno::Reference< css::xml::sax::XFastContextHandler > DomBuilderContext::createFastChildContext(
sal_Int32 nElement, const css::uno::Reference< css::xml::sax::XFastAttributeList >& )
{
// create DomBuilder for subtree
return new DomBuilderContext( GetImport(), nElement, mxNode );
}
css::uno::Reference< css::xml::sax::XFastContextHandler > DomBuilderContext::createUnknownChildContext(
const OUString & rNamespace, const OUString &rName, const css::uno::Reference< css::xml::sax::XFastAttributeList >& )
{
// create DomBuilder for subtree
return new DomBuilderContext( GetImport(), rNamespace, rName, mxNode );
}
void SAL_CALL DomBuilderContext::startFastElement(
sal_Int32 /*nElement*/,
const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttrList )
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
SAL_WARN_IF( !mxNode->getOwnerDocument().is(), "xmloff", "XNode must have XDocument" );
HandleAttributes(xAttrList);
}
void SAL_CALL DomBuilderContext::startUnknownElement(
const OUString & /*rNamespace*/, const OUString & /*rName*/,
const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttrList )
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
SAL_WARN_IF( !mxNode->getOwnerDocument().is(), "xmloff", "XNode must have XDocument" );
HandleAttributes(xAttrList);
}
void DomBuilderContext::HandleAttributes(
const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttrList )
{
// add attribute nodes to new node
for( auto& aIter : sax_fastparser::castToFastAttributeList(xAttrList) )
{
sal_Int32 nAttrToken = aIter.getToken();
// get name & value for attribute
sal_uInt16 nNamespace = (nAttrToken >> NMSP_SHIFT) - 1;
const OUString& rPrefix = SvXMLImport::getNamespacePrefixFromToken(nAttrToken, &GetImport().GetNamespaceMap());
const OUString& rLocalName = SvXMLImport::getNameFromToken( nAttrToken );
OUString aValue = aIter.toString();
// create attribute node and set value
Reference<XElement> xElement( mxNode, UNO_QUERY_THROW );
switch( nNamespace )
{
case XML_NAMESPACE_NONE:
// no namespace: create a non-namespaced attribute
xElement->setAttribute( rLocalName, aValue );
break;
case XML_NAMESPACE_XMLNS:
// namespace declaration: ignore, since the DOM tree handles these
// declarations implicitly
break;
case XML_NAMESPACE_UNKNOWN:
// unknown namespace: illegal input. Raise Warning.
{
GetImport().SetError(
XMLERROR_FLAG_WARNING | XMLERROR_NAMESPACE_TROUBLE, { rLocalName, aValue } );
}
break;
default:
{
// a real and proper namespace: create namespaced attribute
OUString namespaceURI = SvXMLImport::getNamespaceURIFromToken(aIter.getToken());
OUString qualifiedName = rPrefix.isEmpty() ? rLocalName : rPrefix + SvXMLImport::aNamespaceSeparator + rLocalName;
xElement->setAttributeNS( namespaceURI, qualifiedName, aValue );
}
break;
}
}
const css::uno::Sequence< css::xml::Attribute > unknownAttribs = xAttrList->getUnknownAttributes();
for ( const auto& rUnknownAttrib : unknownAttribs )
{
// create attribute node and set value
Reference<XElement> xElement( mxNode, UNO_QUERY_THROW );
if (!rUnknownAttrib.NamespaceURL.isEmpty())
{
// unknown namespace: illegal input. Raise Warning.
GetImport().SetError(
XMLERROR_FLAG_WARNING | XMLERROR_NAMESPACE_TROUBLE, { rUnknownAttrib.Name, rUnknownAttrib.Value } );
}
else
{
// no namespace: create a non-namespaced attribute
xElement->setAttribute( rUnknownAttrib.Name, rUnknownAttrib.Value );
}
}
}
void DomBuilderContext::characters( const OUString& rCharacters )
{
SAL_WARN_IF( !mxNode.is(), "xmloff", "empty XNode not allowed" );
// TODO: I assume adjacent text nodes should be joined, to preserve
// processing model? (I.e., if the SAX parser breaks a string into 2
// Characters(..) calls, the DOM model would still see only one child.)
// create text node and append to parent
Reference<XNode> xNew(
mxNode->getOwnerDocument()->createTextNode( rCharacters ),
UNO_QUERY_THROW );
mxNode->appendChild( xNew );
}
// helper function implementations
static Reference<XNode> lcl_createDomInstance()
{
Reference<XComponentContext> xContext = comphelper::getProcessComponentContext();
SAL_WARN_IF( !xContext.is(), "xmloff", "can't get service factory" );
Reference<XDocumentBuilder> xBuilder( DocumentBuilder::create(xContext) );
return Reference<XNode>( xBuilder->newDocument(), UNO_QUERY_THROW );
}
static Reference<XNode> lcl_createElement( SvXMLImport& rImport,
sal_Int32 nElement,
const Reference<XNode>& xParent)
{
SAL_WARN_IF( !xParent.is(), "xmloff", "need parent node" );
Reference<XDocument> xDocument = xParent->getOwnerDocument();
SAL_WARN_IF( !xDocument.is(), "xmloff", "no XDocument found!" );
// TODO: come up with proper way of handling namespaces; re-creating the
// namespace from the key is NOT a good idea, and will not work for
// multiple prefixes for the same namespace. Fortunately, those are rare.
Reference<XElement> xElement;
sal_uInt16 nNamespace = (nElement >> NMSP_SHIFT) - 1;
const OUString& rPrefix = SvXMLImport::getNamespacePrefixFromToken(nElement, &rImport.GetNamespaceMap());
const OUString& rLocalName = SvXMLImport::getNameFromToken( nElement );
switch( nNamespace )
{
case XML_NAMESPACE_NONE:
// no namespace: use local name
xElement = xDocument->createElement( rLocalName );
break;
case XML_NAMESPACE_XMLNS:
case XML_NAMESPACE_UNKNOWN:
// both cases are illegal; raise warning (and use only local name)
xElement = xDocument->createElement( rLocalName );
{
Sequence<OUString> aSeq { rLocalName };
rImport.SetError(
XMLERROR_FLAG_WARNING | XMLERROR_NAMESPACE_TROUBLE, aSeq );
}
break;
default:
// We are only given the prefix and the local name; thus we have to ask
// the namespace map to create a qualified name for us. Technically,
// this is a bug, since this will fail for multiple prefixes used for
// the same namespace.
OUString namespaceURI = SvXMLImport::getNamespaceURIFromToken(nElement);
OUString qualifiedName = rPrefix.isEmpty() ? rLocalName : rPrefix + SvXMLImport::aNamespaceSeparator + rLocalName;
xElement = xDocument->createElementNS(namespaceURI, qualifiedName);
break;
}
SAL_WARN_IF( !xElement.is(), "xmloff", "can't create element" );
// add new element to parent and return
xParent->appendChild( xElement );
return xElement;
}
static Reference<XNode> lcl_createElement(
const OUString & rNamespace, const OUString & rName,
const Reference<XNode>& xParent)
{
SAL_WARN_IF( !xParent.is(), "xmloff", "need parent node" );
Reference<XDocument> xDocument = xParent->getOwnerDocument();
SAL_WARN_IF( !xDocument.is(), "xmloff", "no XDocument found!" );
// TODO: come up with proper way of handling namespaces; re-creating the
// namespace from the key is NOT a good idea, and will not work for
// multiple prefixes for the same namespace. Fortunately, those are rare.
Reference<XElement> xElement;
if (rNamespace.isEmpty())
{
// no namespace: use local name
xElement = xDocument->createElement( rName );
}
else
{
xElement = xDocument->createElementNS(rNamespace, rName);
}
// add new element to parent and return
xParent->appendChild( xElement );
return xElement;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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