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.hxx"
  22 #include "serialization_app_xml.hxx"
  23
  24 #include <com/sun/star/io/Pipe.hpp>
  25 #include <com/sun/star/xml/dom/DocumentBuilder.hpp>
  26 #include <com/sun/star/xml/dom/XNode.hpp>
  27 #include <com/sun/star/xml/dom/XDocument.hpp>
  28 #include <com/sun/star/xml/dom/XNodeList.hpp>
  29 #include <com/sun/star/xml/dom/NodeType.hpp>
  30 #include <com/sun/star/lang/XUnoTunnel.hpp>
  31 #include <com/sun/star/xml/xpath/XPathObjectType.hpp>
  32 #include <com/sun/star/xml/sax/XSAXSerializable.hpp>
  33 #include <com/sun/star/xml/sax/Writer.hpp>
  34 #include <com/sun/star/beans/StringPair.hpp>
  35 #include <com/sun/star/io/XActiveDataSource.hpp>
  36 #include <com/sun/star/xml/dom/XDocumentBuilder.hpp>
  37
  38 #include <tools/diagnose_ex.h>
  39 #include <comphelper/processfactory.hxx>
  40
  41 #include <boost/scoped_ptr.hpp>
  42 #include <limits>
  43
  44 using ::com::sun::star::uno::Reference;
  45 using ::com::sun::star::uno::Exception;
  46 using ::com::sun::star::uno::Sequence;
  47 using ::com::sun::star::uno::RuntimeException;
  48 using ::com::sun::star::uno::UNO_QUERY;
  49 using ::com::sun::star::uno::UNO_QUERY_THROW;
  50 using ::com::sun::star::uno::UNO_SET_THROW;
  51 using ::com::sun::star::xml::dom::DocumentBuilder;
  52 using ::com::sun::star::xml::dom::XNode;
  53 using ::com::sun::star::xml::dom::XDocument;
  54 using ::com::sun::star::xml::sax::XSAXSerializable;
  55 using ::com::sun::star::beans::StringPair;
  56 using ::com::sun::star::io::XActiveDataSource;
  57 using ::com::sun::star::xml::dom::NodeType_DOCUMENT_NODE;
  58 using ::com::sun::star::xml::dom::NodeType_ELEMENT_NODE;
  59 using ::com::sun::star::xml::dom::XDocumentBuilder;
  60 using ::com::sun::star::xml::sax::Writer;
  61 using ::com::sun::star::xml::sax::XDocumentHandler;
  62
  63 CSerializationAppXML::CSerializationAppXML()
  64     : m_xBuffer(css::io::Pipe::create(comphelper::getProcessComponentContext()))
  65 {
  66 }
  67
  68 Reference< css::io::XInputStream >
  69 CSerializationAppXML::getInputStream()
  70 {
  71     // The pipes output is provided through it's
  72     // XOutputStream interface aspect
  73     return Reference< css::io::XInputStream >(m_xBuffer, UNO_QUERY);
  74 }
  75
  76 void
  77 CSerializationAppXML::serialize_node(const Reference< XNode >& rNode)
  78 {
  79     try
  80     {
  81         Reference< XSAXSerializable > xSerializer( rNode, UNO_QUERY );
  82         if ( !xSerializer.is() )
  83         {
  84             // ensure we have a "real" node
  85             Reference< XNode > xNode = rNode;
  86             if ( xNode->getNodeType() == NodeType_DOCUMENT_NODE )
  87             {
  88                 Reference< XDocument > const xDoc( xNode, UNO_QUERY_THROW );
  89                 xNode.set( xDoc->getDocumentElement(), UNO_QUERY_THROW );
  90             }
  91             ENSURE_OR_RETURN_VOID( xNode->getNodeType() == NodeType_ELEMENT_NODE,
  92                 "CSerializationAppXML::serialize_node: invalid node type!" );
  93
  94             // create a new document
  95             Reference< XDocumentBuilder > const xDocBuilder = DocumentBuilder::create( comphelper::getProcessComponentContext() );
  96             Reference< XDocument > const xDocument( xDocBuilder->newDocument(), UNO_SET_THROW );
  97
  98             // copy the to-be-serialized node
  99             Reference< XNode > const xImportedNode( xDocument->importNode( xNode, true ), UNO_SET_THROW );
 100             xDocument->appendChild( xImportedNode );
 101
 102             // ask the doc for the serializer
 103             xSerializer.set( xDocument, UNO_QUERY );
 104         }
 105
 106         ENSURE_OR_RETURN_VOID( xSerializer.is(),
 107             "CSerializationAppXML::serialize_node: no serialization access to the node/document!" );
 108
 109         // create a SAXWriter to take the serialization events, and connect it to our pipe
 110         Reference< css::xml::sax::XWriter > const xSaxWriter = Writer::create( comphelper::getProcessComponentContext() );
 111         xSaxWriter->setOutputStream( Reference< css::io::XOutputStream >( m_xBuffer, UNO_QUERY_THROW) );
 112
 113         // do the serialization
 114         xSerializer->serialize( Reference< XDocumentHandler >(xSaxWriter, UNO_QUERY_THROW), Sequence< StringPair >() );
 115     }
 116     catch( const Exception& )
 117     {
 118         DBG_UNHANDLED_EXCEPTION();
 119     }
 120 }
 121
 122 void
 123 CSerializationAppXML::serialize()
 124 {
 125     if (!m_aFragment.is()) return;
 126
 127     Reference< XNode > cur = m_aFragment->getFirstChild();
 128     while (cur.is())
 129     {
 130         serialize_node(cur);
 131         cur = cur->getNextSibling();
 132     }
 133     m_xBuffer->closeOutput();
 134 }
 135
 136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */