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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/nmspmap.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 <tools/debug.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_uInt16 nPrefix,
const OUString& rLocalName,
const Reference<XNode>& xParent);
DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
sal_uInt16 nPrefix,
const OUString& rLocalName ) :
SvXMLImportContext( rImport, nPrefix, rLocalName ),
mxNode( lcl_createElement( rImport, nPrefix, rLocalName,
lcl_createDomInstance() ) )
{
DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
DBG_ASSERT( Reference<XElement>( mxNode, UNO_QUERY ).is(), "need element" );
DBG_ASSERT( mxNode->getNodeType() == NodeType_ELEMENT_NODE, "need element" );
}
DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
sal_uInt16 nPrefix,
const OUString& rLocalName,
Reference<XNode>& xParent ) :
SvXMLImportContext( rImport, nPrefix, rLocalName ),
mxNode( lcl_createElement( rImport, nPrefix, rLocalName, xParent ) )
{
DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
DBG_ASSERT( Reference<XElement>( mxNode, UNO_QUERY ).is(), "need element" );
DBG_ASSERT( mxNode->getNodeType() == NodeType_ELEMENT_NODE, "need element" );
}
DomBuilderContext::~DomBuilderContext()
{
}
Reference<XDocument> DomBuilderContext::getTree()
{
DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
return mxNode->getOwnerDocument();
}
SvXMLImportContext* DomBuilderContext::CreateChildContext(
sal_uInt16 nPrefix,
const OUString& rLocalName,
const Reference<XAttributeList>& )
{
// create DomBuilder for subtree
return new DomBuilderContext( GetImport(), nPrefix, rLocalName, mxNode );
}
void DomBuilderContext::StartElement(
const Reference<XAttributeList>& xAttrList )
{
DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
DBG_ASSERT( mxNode->getOwnerDocument().is(), "XNode must have XDocument" );
// add attribute nodes to new node
sal_Int16 nAttributeCount = xAttrList->getLength();
for( sal_Int16 i = 0; i < nAttributeCount; i++ )
{
// get name & value for attribute
const OUString& rName = xAttrList->getNameByIndex( i );
const OUString& rValue = xAttrList->getValueByIndex( i );
// namespace handling: determine namespace & namespace key
OUString sNamespace;
sal_uInt16 nNamespaceKey =
GetImport().GetNamespaceMap().GetKeyByAttrName_(
rName, nullptr, nullptr, &sNamespace );
// create attribute node and set value
Reference<XElement> xElement( mxNode, UNO_QUERY_THROW );
switch( nNamespaceKey )
{
case XML_NAMESPACE_NONE:
// no namespace: create a non-namespaced attribute
xElement->setAttribute( rName, rValue );
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.
{
Sequence<OUString> aSeq(2);
aSeq[0] = rName;
aSeq[1] = rValue;
GetImport().SetError(
XMLERROR_FLAG_WARNING | XMLERROR_NAMESPACE_TROUBLE, aSeq );
}
break;
default:
// a real and proper namespace: create namespaced attribute
xElement->setAttributeNS( sNamespace, rName, rValue );
break;
}
}
}
void DomBuilderContext::EndElement()
{
// nothing to be done!
}
void DomBuilderContext::Characters( const OUString& rCharacters )
{
DBG_ASSERT( mxNode.is(), "empty XNode not allowed" );
// TODO: I assume adjacent text nodes should be joined, to preserve
// processinf 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();
DBG_ASSERT( xContext.is(), "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_uInt16 nPrefix,
const OUString& rLocalName,
const Reference<XNode>& xParent)
{
DBG_ASSERT( xParent.is(), "need parent node" );
Reference<XDocument> xDocument = xParent->getOwnerDocument();
DBG_ASSERT( xDocument.is(), "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;
switch( nPrefix )
{
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.
xElement = xDocument->createElementNS(
rImport.GetNamespaceMap().GetNameByKey( nPrefix ),
rImport.GetNamespaceMap().GetQNameByKey( nPrefix, rLocalName ) );
break;
}
DBG_ASSERT( xElement.is(), "can't create element" );
// add new element to parent and return
xParent->appendChild( xElement );
return xElement;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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