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 <comphelper/componentcontext.hxx>
  29 #include <cppuhelper/implbase1.hxx>
  30 #include <rtl/ref.hxx>
  31 #include <tools/diagnose_ex.h>
  32 #include <xmloff/attrlist.hxx>
  33
  34 #include <stack>
  35
  36 //......................................................................................................................
  37 namespace dbaccess
  38 {
  39 //......................................................................................................................
  40
  41     /** === begin UNO using === **/
  42     using ::com::sun::star::uno::Reference;
  43     using ::com::sun::star::uno::XInterface;
  44     using ::com::sun::star::uno::UNO_QUERY;
  45     using ::com::sun::star::uno::UNO_QUERY_THROW;
  46     using ::com::sun::star::uno::UNO_SET_THROW;
  47     using ::com::sun::star::uno::Exception;
  48     using ::com::sun::star::uno::RuntimeException;
  49     using ::com::sun::star::uno::Any;
  50     using ::com::sun::star::uno::makeAny;
  51     using ::com::sun::star::uno::Sequence;
  52     using ::com::sun::star::uno::Type;
  53     using ::com::sun::star::embed::XStorage;
  54     using ::com::sun::star::xml::sax::XDocumentHandler;
  55     using ::com::sun::star::xml::sax::XAttributeList;
  56     using ::com::sun::star::xml::sax::XWriter;
  57     using ::com::sun::star::xml::sax::Writer;
  58     using ::com::sun::star::io::XStream;
  59     using ::com::sun::star::io::XOutputStream;
  60     using ::com::sun::star::io::XActiveDataSource;
  61     using ::com::sun::star::xml::sax::Parser;
  62     using ::com::sun::star::xml::sax::XParser;
  63     using ::com::sun::star::xml::sax::InputSource;
  64     /** === end UNO using === **/
  65
  66     //==================================================================================================================
  67     //= StorageXMLOutputStream_Data
  68     //==================================================================================================================
  69     struct StorageXMLOutputStream_Data
  70     {
  71         Reference< XDocumentHandler >           xHandler;
  72         ::std::stack< ::rtl::OUString >         aElements;
  73         ::rtl::Reference< SvXMLAttributeList >  xAttributes;
  74     };
  75
  76     //==================================================================================================================
  77     //= StorageXMLOutputStream
  78     //==================================================================================================================
  79     //------------------------------------------------------------------------------------------------------------------
  80     StorageXMLOutputStream::StorageXMLOutputStream( const ::comphelper::ComponentContext& i_rContext,
  81                                                     const Reference< XStorage >& i_rParentStorage,
  82                                                     const ::rtl::OUString& i_rStreamName )
  83         :StorageOutputStream( i_rContext, i_rParentStorage, i_rStreamName )
  84         ,m_pData( new StorageXMLOutputStream_Data )
  85     {
  86         const Reference< XWriter > xSaxWriter = Writer::create( i_rContext.getUNOContext() );
  87         xSaxWriter->setOutputStream( getOutputStream() );
  88
  89         m_pData->xHandler.set( xSaxWriter, UNO_QUERY_THROW );
  90         m_pData->xHandler->startDocument();
  91
  92         m_pData->xAttributes = new SvXMLAttributeList;
  93     }
  94
  95     //------------------------------------------------------------------------------------------------------------------
  96     StorageXMLOutputStream::~StorageXMLOutputStream()
  97     {
  98     }
  99
 100     //------------------------------------------------------------------------------------------------------------------
 101     void StorageXMLOutputStream::close()
 102     {
 103         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "illegal document handler" );
 104         m_pData->xHandler->endDocument();
 105         // do not call the base class, it would call closeOutput on the output stream, which is already done by
 106         // endDocument
 107     }
 108
 109     //------------------------------------------------------------------------------------------------------------------
 110     void StorageXMLOutputStream::addAttribute( const ::rtl::OUString& i_rName, const ::rtl::OUString& i_rValue ) const
 111     {
 112         m_pData->xAttributes->AddAttribute( i_rName, i_rValue );
 113     }
 114
 115     //------------------------------------------------------------------------------------------------------------------
 116     void StorageXMLOutputStream::startElement( const ::rtl::OUString& i_rElementName ) const
 117     {
 118         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 119
 120         m_pData->xHandler->startElement( i_rElementName, m_pData->xAttributes.get() );
 121         m_pData->xAttributes = new SvXMLAttributeList;
 122         m_pData->aElements.push( i_rElementName );
 123     }
 124
 125     //------------------------------------------------------------------------------------------------------------------
 126     void StorageXMLOutputStream::endElement() const
 127     {
 128         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 129         ENSURE_OR_RETURN_VOID( !m_pData->aElements.empty(), "no element on the stack" );
 130
 131         const ::rtl::OUString sElementName( m_pData->aElements.top() );
 132         m_pData->xHandler->endElement( sElementName );
 133         m_pData->aElements.pop();
 134     }
 135
 136     //------------------------------------------------------------------------------------------------------------------
 137     void StorageXMLOutputStream::ignorableWhitespace( const ::rtl::OUString& i_rWhitespace ) const
 138     {
 139         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 140
 141         m_pData->xHandler->ignorableWhitespace( i_rWhitespace );
 142     }
 143
 144     //------------------------------------------------------------------------------------------------------------------
 145     void StorageXMLOutputStream::characters( const ::rtl::OUString& i_rCharacters ) const
 146     {
 147         ENSURE_OR_RETURN_VOID( m_pData->xHandler.is(), "no document handler" );
 148
 149         m_pData->xHandler->characters( i_rCharacters );
 150     }
 151
 152     //==================================================================================================================
 153     //= StorageXMLInputStream_Data
 154     //==================================================================================================================
 155     struct StorageXMLInputStream_Data
 156     {
 157         Reference< XParser >    xParser;
 158     };
 159
 160     //==================================================================================================================
 161     //= StorageXMLInputStream
 162     //==================================================================================================================
 163     //------------------------------------------------------------------------------------------------------------------
 164     StorageXMLInputStream::StorageXMLInputStream( const ::comphelper::ComponentContext& i_rContext,
 165                                                   const Reference< XStorage >& i_rParentStorage,
 166                                                   const ::rtl::OUString& i_rStreamName )
 167         :StorageInputStream( i_rContext, i_rParentStorage, i_rStreamName )
 168         ,m_pData( new StorageXMLInputStream_Data )
 169     {
 170         m_pData->xParser.set( Parser::create(i_rContext.getUNOContext()) );
 171     }
 172
 173     //------------------------------------------------------------------------------------------------------------------
 174     void StorageXMLInputStream::import( const Reference< XDocumentHandler >& i_rHandler )
 175     {
 176         ENSURE_OR_THROW( i_rHandler.is(), "illegal document handler (NULL)" );
 177
 178         InputSource aInputSource;
 179         aInputSource.aInputStream = getInputStream();
 180
 181         m_pData->xParser->setDocumentHandler( i_rHandler );
 182         m_pData->xParser->parseStream( aInputSource );
 183     }
 184
 185     //------------------------------------------------------------------------------------------------------------------
 186     StorageXMLInputStream::~StorageXMLInputStream()
 187     {
 188     }
 189
 190 //......................................................................................................................
 191 } // namespace dbaccess
 192 //......................................................................................................................
 193
 194 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */