forms/source/xforms/submission/serialization_app_xml.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include "serialization_app_xml.hxx"
  22
  23 #include <com/sun/star/io/Pipe.hpp>
  24 #include <com/sun/star/xml/dom/DocumentBuilder.hpp>
  25 #include <com/sun/star/xml/dom/XNode.hpp>
  26 #include <com/sun/star/xml/dom/XDocument.hpp>
  27 #include <com/sun/star/xml/dom/NodeType.hpp>
  28 #include <com/sun/star/xml/sax/XSAXSerializable.hpp>
  29 #include <com/sun/star/xml/sax/Writer.hpp>
  30 #include <com/sun/star/beans/StringPair.hpp>
  31 #include <com/sun/star/xml/dom/XDocumentBuilder.hpp>
  32
  33 #include <comphelper/diagnose_ex.hxx>
  34 #include <comphelper/processfactory.hxx>
  35
  36 using ::com::sun::star::uno::Reference;
  37 using ::com::sun::star::uno::Exception;
  38 using ::com::sun::star::uno::Sequence;
  39 using ::com::sun::star::uno::UNO_QUERY;
  40 using ::com::sun::star::uno::UNO_QUERY_THROW;
  41 using ::com::sun::star::uno::UNO_SET_THROW;
  42 using ::com::sun::star::xml::dom::DocumentBuilder;
  43 using ::com::sun::star::xml::dom::XNode;
  44 using ::com::sun::star::xml::dom::XDocument;
  45 using ::com::sun::star::xml::sax::XSAXSerializable;
  46 using ::com::sun::star::beans::StringPair;
  47 using ::com::sun::star::xml::dom::NodeType_DOCUMENT_NODE;
  48 using ::com::sun::star::xml::dom::NodeType_ELEMENT_NODE;
  49 using ::com::sun::star::xml::dom::XDocumentBuilder;
  50 using ::com::sun::star::xml::sax::Writer;
  51 using ::com::sun::star::xml::sax::XDocumentHandler;
  52
  53 CSerializationAppXML::CSerializationAppXML()
  54     : m_xBuffer(css::io::Pipe::create(comphelper::getProcessComponentContext()))
  55 {
  56 }
  57
  58 Reference< css::io::XInputStream >
  59 CSerializationAppXML::getInputStream()
  60 {
  61     // The pipes output is provided through it's
  62     // XOutputStream interface aspect
  63     return m_xBuffer;
  64 }
  65
  66 void
  67 CSerializationAppXML::serialize_node(const Reference< XNode >& rNode)
  68 {
  69     try
  70     {
  71         Reference< XSAXSerializable > xSerializer( rNode, UNO_QUERY );
  72         if ( !xSerializer.is() )
  73         {
  74             // ensure we have a "real" node
  75             Reference< XNode > xNode = rNode;
  76             if ( xNode->getNodeType() == NodeType_DOCUMENT_NODE )
  77             {
  78                 Reference< XDocument > const xDoc( xNode, UNO_QUERY_THROW );
  79                 xNode.set( xDoc->getDocumentElement(), UNO_QUERY_THROW );
  80             }
  81             ENSURE_OR_RETURN_VOID( xNode->getNodeType() == NodeType_ELEMENT_NODE,
  82                 "CSerializationAppXML::serialize_node: invalid node type!" );
  83
  84             // create a new document
  85             Reference< XDocumentBuilder > const xDocBuilder = DocumentBuilder::create( comphelper::getProcessComponentContext() );
  86             Reference< XDocument > const xDocument( xDocBuilder->newDocument(), UNO_SET_THROW );
  87
  88             // copy the to-be-serialized node
  89             Reference< XNode > const xImportedNode( xDocument->importNode( xNode, true ), UNO_SET_THROW );
  90             xDocument->appendChild( xImportedNode );
  91
  92             // ask the doc for the serializer
  93             xSerializer.set( xDocument, UNO_QUERY );
  94         }
  95
  96         ENSURE_OR_RETURN_VOID( xSerializer.is(),
  97             "CSerializationAppXML::serialize_node: no serialization access to the node/document!" );
  98
  99         // create a SAXWriter to take the serialization events, and connect it to our pipe
 100         Reference< css::xml::sax::XWriter > const xSaxWriter = Writer::create( comphelper::getProcessComponentContext() );
 101         xSaxWriter->setOutputStream( Reference< css::io::XOutputStream >( m_xBuffer, UNO_QUERY_THROW) );
 102
 103         // do the serialization
 104         xSerializer->serialize( Reference< XDocumentHandler >(xSaxWriter, UNO_QUERY_THROW), Sequence< StringPair >() );
 105     }
 106     catch( const Exception& )
 107     {
 108         DBG_UNHANDLED_EXCEPTION("forms.xforms");
 109     }
 110 }
 111
 112 void
 113 CSerializationAppXML::serialize()
 114 {
 115     if (!m_aFragment.is()) return;
 116
 117     Reference< XNode > cur = m_aFragment->getFirstChild();
 118     while (cur.is())
 119     {
 120         serialize_node(cur);
 121         cur = cur->getNextSibling();
 122     }
 123     m_xBuffer->closeOutput();
 124 }
 125
 126 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */