dbaccess/source/core/recovery/storagexmlstream.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 #include "storagexmlstream.hxx"
  21
  22 #include <com/sun/star/embed/ElementModes.hpp>
  23 #include <com/sun/star/xml/sax/XDocumentHandler.hpp>
  24 #include <com/sun/star/xml/sax/Parser.hpp>
  25 #include <com/sun/star/xml/sax/Writer.hpp>
  26
  27 #include <rtl/ref.hxx>
  28 #include <comphelper/diagnose_ex.hxx>
  29
  30 namespace dbaccess
  31 {
  32
  33     using ::com::sun::star::uno::Reference;
  34     using ::com::sun::star::uno::UNO_QUERY_THROW;
  35     using ::com::sun::star::uno::XComponentContext;
  36     using ::com::sun::star::embed::XStorage;
  37     using ::com::sun::star::xml::sax::XDocumentHandler;
  38     using ::com::sun::star::xml::sax::XWriter;
  39     using ::com::sun::star::xml::sax::Writer;
  40     using ::com::sun::star::xml::sax::Parser;
  41     using ::com::sun::star::xml::sax::InputSource;
  42
  43     // StorageXMLOutputStream
  44     StorageXMLOutputStream::StorageXMLOutputStream( const Reference<XComponentContext>& i_rContext,
  45                                                     const Reference< XStorage >& i_rParentStorage,
  46                                                     const OUString& i_rStreamName )
  47         :StorageOutputStream( i_rParentStorage, i_rStreamName )
  48     {
  49         const Reference< XWriter > xSaxWriter = Writer::create( i_rContext );
  50         xSaxWriter->setOutputStream( getOutputStream() );
  51
  52         mxHandler.set( xSaxWriter, UNO_QUERY_THROW );
  53         mxHandler->startDocument();
  54
  55         mxAttributes = new comphelper::AttributeList;
  56     }
  57
  58     StorageXMLOutputStream::~StorageXMLOutputStream()
  59     {
  60     }
  61
  62     void StorageXMLOutputStream::close()
  63     {
  64         ENSURE_OR_RETURN_VOID( mxHandler.is(), "illegal document handler" );
  65         mxHandler->endDocument();
  66         // do not call the base class, it would call closeOutput on the output stream, which is already done by
  67         // endDocument
  68     }
  69
  70     void StorageXMLOutputStream::addAttribute( const OUString& i_rName, const OUString& i_rValue ) const
  71     {
  72         mxAttributes->AddAttribute( i_rName, i_rValue );
  73     }
  74
  75     void StorageXMLOutputStream::startElement( const OUString& i_rElementName )
  76     {
  77         ENSURE_OR_RETURN_VOID( mxHandler.is(), "no document handler" );
  78
  79         mxHandler->startElement( i_rElementName, mxAttributes );
  80         mxAttributes = new comphelper::AttributeList;
  81         maElements.push( i_rElementName );
  82     }
  83
  84     void StorageXMLOutputStream::endElement()
  85     {
  86         ENSURE_OR_RETURN_VOID( mxHandler.is(), "no document handler" );
  87         ENSURE_OR_RETURN_VOID( !maElements.empty(), "no element on the stack" );
  88
  89         const OUString sElementName( maElements.top() );
  90         mxHandler->endElement( sElementName );
  91         maElements.pop();
  92     }
  93
  94     void StorageXMLOutputStream::ignorableWhitespace( const OUString& i_rWhitespace ) const
  95     {
  96         ENSURE_OR_RETURN_VOID( mxHandler.is(), "no document handler" );
  97
  98         mxHandler->ignorableWhitespace( i_rWhitespace );
  99     }
 100
 101     void StorageXMLOutputStream::characters( const OUString& i_rCharacters ) const
 102     {
 103         ENSURE_OR_RETURN_VOID( mxHandler.is(), "no document handler" );
 104
 105         mxHandler->characters( i_rCharacters );
 106     }
 107
 108     // StorageXMLInputStream
 109     StorageXMLInputStream::StorageXMLInputStream( const Reference<XComponentContext>& i_rContext,
 110                                                   const Reference< XStorage >& i_rParentStorage,
 111                                                   const OUString& i_rStreamName )
 112     {
 113         ENSURE_OR_THROW( i_rParentStorage.is(), "illegal stream" );
 114
 115         const Reference< css::io::XStream > xStream(
 116             i_rParentStorage->openStreamElement( i_rStreamName, css::embed::ElementModes::READ ), css::uno::UNO_SET_THROW );
 117         m_xInputStream.set( xStream->getInputStream(), css::uno::UNO_SET_THROW );
 118
 119         m_xParser.set( Parser::create(i_rContext) );
 120     }
 121
 122     void StorageXMLInputStream::import( const Reference< XDocumentHandler >& i_rHandler )
 123     {
 124         ENSURE_OR_THROW( i_rHandler.is(), "illegal document handler (NULL)" );
 125
 126         InputSource aInputSource;
 127         aInputSource.aInputStream = m_xInputStream;
 128
 129         m_xParser->setDocumentHandler( i_rHandler );
 130         m_xParser->parseStream( aInputSource );
 131     }
 132
 133     StorageXMLInputStream::~StorageXMLInputStream()
 134     {
 135     }
 136
 137 } // namespace dbaccess
 138
 139 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */