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
  21 #include "storagexmlstream.hxx"
  22
  23 #include <com/sun/star/xml/sax/XDocumentHandler.hpp>
  24 #include <com/sun/star/io/XActiveDataSource.hpp>
  25 #include <com/sun/star/xml/sax/Parser.hpp>
  26 #include <com/sun/star/xml/sax/Writer.hpp>
  27
  28 #include <cppuhelper/implbase1.hxx>
  29 #include <rtl/ref.hxx>
  30 #include <tools/diagnose_ex.h>
  31 #include <xmloff/attrlist.hxx>
  32
  33 #include <stack>
  34
  35 //......................................................................................................................
  36 namespace dbaccess
  37 {
  38 //......................................................................................................................
  39
  40     using ::com::sun::star::uno::Reference;
  41     using ::com::sun::star::uno::XInterface;
  42     using ::com::sun::star::uno::UNO_QUERY;
  43     using ::com::sun::star::uno::UNO_QUERY_THROW;
  44     using ::com::sun::star::uno::UNO_SET_THROW;
  45     using ::com::sun::star::uno::Exception;
  46     using ::com::sun::star::uno::RuntimeException;
  47     using ::com::sun::star::uno::Any;
  48     using ::com::sun::star::uno::makeAny;
  49     using ::com::sun::star::uno::Sequence;
  50     using ::com::sun::star::uno::Type;
  51     using ::com::sun::star::uno::XComponentContext;
  52     using ::com::sun::star::embed::XStorage;
  53     using ::com::sun::star::xml::sax::XDocumentHandler;
  54     using ::com::sun::star::xml::sax::XAttributeList;
  55     using ::com::sun::star::xml::sax::XWriter;
  56     using ::com::sun::star::xml::sax::Writer;
  57     using ::com::sun::star::io::XStream;
  58     using ::com::sun::star::io::XOutputStream;
  59     using ::com::sun::star::io::XActiveDataSource;
  60     using ::com::sun::star::xml::sax::Parser;
  61     using ::com::sun::star::xml::sax::XParser;
  62     using ::com::sun::star::xml::sax::InputSource;
  63
  64     //==================================================================================================================
  65     //= StorageXMLOutputStream_Data
  66     //==================================================================================================================
  67     struct StorageXMLOutputStream_Data
  68     {
  69         Reference< XDocumentHandler >           xHandler;
  70         ::std::stack< OUString >         aElements;
  71         ::rtl::Reference< SvXMLAttributeList >  xAttributes;
  72     };
  73
  74     //==================================================================================================================
  75     //= StorageXMLOutputStream
  76     //==================================================================================================================
  77     //------------------------------------------------------------------------------------------------------------------
  78     StorageXMLOutputStream::StorageXMLOutputStream( const Reference<XComponentContext>& i_rContext,
  79                                                     const Reference< XStorage >& i_rParentStorage,
  80                                                     const OUString& i_rStreamName )
  81         :StorageOutputStream( i_rContext, i_rParentStorage, i_rStreamName )
  82         ,m_pData( new StorageXMLOutputStream_Data )
  83     {
  84         const Reference< XWriter > xSaxWriter = Writer::create( i_rContext );
  85         xSaxWriter->setOutputStream( getOutputStream() );
  86
  87         m_pData->xHandler.set( xSaxWriter, UNO_QUERY_THROW );
  88         m_pData->xHandler->startDocument();
  89
  90         m_pData->xAttributes = new SvXMLAttributeList;
  91     }
  92
  93     //------------------------------------------------------------------------------------------------------------------
  94     StorageXMLOutputStream::~StorageXMLOutputStream()
  95     {
  96     }
  97
  98     //------------------------------------------------------------------------------------------------------------------
  99     void StorageXMLOutputStream::close()
 100     {
 101         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "illegal document handler" );
 102         m_pData->xHandler->endDocument();
 103         // do not call the base class, it would call closeOutput on the output stream, which is already done by
 104         // endDocument
 105     }
 106
 107     //------------------------------------------------------------------------------------------------------------------
 108     void StorageXMLOutputStream::addAttribute( const OUString& i_rName, const OUString& i_rValue ) const
 109     {
 110         m_pData->xAttributes->AddAttribute( i_rName, i_rValue );
 111     }
 112
 113     //------------------------------------------------------------------------------------------------------------------
 114     void StorageXMLOutputStream::startElement( const OUString& i_rElementName ) const
 115     {
 116         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 117
 118         m_pData->xHandler->startElement( i_rElementName, m_pData->xAttributes.get() );
 119         m_pData->xAttributes = new SvXMLAttributeList;
 120         m_pData->aElements.push( i_rElementName );
 121     }
 122
 123     //------------------------------------------------------------------------------------------------------------------
 124     void StorageXMLOutputStream::endElement() const
 125     {
 126         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 127         ENSURE_OR_RETURN_VOID( !m_pData->aElements.empty(), "no element on the stack" );
 128
 129         const OUString sElementName( m_pData->aElements.top() );
 130         m_pData->xHandler->endElement( sElementName );
 131         m_pData->aElements.pop();
 132     }
 133
 134     //------------------------------------------------------------------------------------------------------------------
 135     void StorageXMLOutputStream::ignorableWhitespace( const OUString& i_rWhitespace ) const
 136     {
 137         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 138
 139         m_pData->xHandler->ignorableWhitespace( i_rWhitespace );
 140     }
 141
 142     //------------------------------------------------------------------------------------------------------------------
 143     void StorageXMLOutputStream::characters( const OUString& i_rCharacters ) const
 144     {
 145         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 146
 147         m_pData->xHandler->characters( i_rCharacters );
 148     }
 149
 150     //==================================================================================================================
 151     //= StorageXMLInputStream_Data
 152     //==================================================================================================================
 153     struct StorageXMLInputStream_Data
 154     {
 155         Reference< XParser >    xParser;
 156     };
 157
 158     //==================================================================================================================
 159     //= StorageXMLInputStream
 160     //==================================================================================================================
 161     //------------------------------------------------------------------------------------------------------------------
 162     StorageXMLInputStream::StorageXMLInputStream( const Reference<XComponentContext>& i_rContext,
 163                                                   const Reference< XStorage >& i_rParentStorage,
 164                                                   const OUString& i_rStreamName )
 165         :StorageInputStream( i_rContext, i_rParentStorage, i_rStreamName )
 166         ,m_pData( new StorageXMLInputStream_Data )
 167     {
 168         m_pData->xParser.set( Parser::create(i_rContext) );
 169     }
 170
 171     //------------------------------------------------------------------------------------------------------------------
 172     void StorageXMLInputStream::import( const Reference< XDocumentHandler >& i_rHandler )
 173     {
 174         ENSURE_OR_THROW( i_rHandler.is(), "illegal document handler (NULL)" );
 175
 176         InputSource aInputSource;
 177         aInputSource.aInputStream = getInputStream();
 178
 179         m_pData->xParser->setDocumentHandler( i_rHandler );
 180         m_pData->xParser->parseStream( aInputSource );
 181     }
 182
 183     //------------------------------------------------------------------------------------------------------------------
 184     StorageXMLInputStream::~StorageXMLInputStream()
 185     {
 186     }
 187
 188 //......................................................................................................................
 189 } // namespace dbaccess
 190 //......................................................................................................................
 191
 192 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */