package/source/xstor/selfterminatefilestream.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 <com/sun/star/ucb/SimpleFileAccess.hpp>
  21
  22 #include "selfterminatefilestream.hxx"
  23 #include <comphelper/processfactory.hxx>
  24
  25 using namespace ::com::sun::star;
  26
  27 OSelfTerminateFileStream::OSelfTerminateFileStream( const uno::Reference< uno::XComponentContext >& xContext, const OUString& aURL )
  28 : m_aURL( aURL )
  29 {
  30     uno::Reference< uno::XComponentContext > xOwnContext = xContext;
  31     if ( !xOwnContext.is() )
  32         xOwnContext.set( ::comphelper::getProcessComponentContext(), uno::UNO_SET_THROW );
  33
  34     // IMPORTANT: The implementation is based on idea that m_xFileAccess, m_xInputStream and m_xSeekable are always set
  35     // otherwise an exception is thrown in constructor
  36
  37     m_xFileAccess.set( ucb::SimpleFileAccess::create(xOwnContext) );
  38
  39     m_xInputStream.set( m_xFileAccess->openFileRead( aURL ), uno::UNO_SET_THROW );
  40     m_xSeekable.set( m_xInputStream, uno::UNO_QUERY_THROW );
  41 }
  42
  43 OSelfTerminateFileStream::~OSelfTerminateFileStream()
  44 {
  45     CloseStreamDeleteFile();
  46 }
  47
  48 void OSelfTerminateFileStream::CloseStreamDeleteFile()
  49 {
  50     try
  51     {
  52         m_xInputStream->closeInput();
  53     }
  54     catch( uno::Exception& )
  55     {}
  56
  57     try
  58     {
  59         m_xFileAccess->kill( m_aURL );
  60     }
  61     catch( uno::Exception& )
  62     {}
  63 }
  64
  65 sal_Int32 SAL_CALL OSelfTerminateFileStream::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
  66 {
  67     return m_xInputStream->readBytes( aData, nBytesToRead );
  68 }
  69
  70 sal_Int32 SAL_CALL OSelfTerminateFileStream::readSomeBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
  71 {
  72     return m_xInputStream->readSomeBytes( aData, nMaxBytesToRead );
  73 }
  74
  75 void SAL_CALL OSelfTerminateFileStream::skipBytes( sal_Int32 nBytesToSkip )
  76 {
  77     return m_xInputStream->skipBytes( nBytesToSkip );
  78 }
  79
  80 sal_Int32 SAL_CALL OSelfTerminateFileStream::available(  )
  81 {
  82     return m_xInputStream->available();
  83 }
  84
  85 void SAL_CALL OSelfTerminateFileStream::closeInput(  )
  86 {
  87     CloseStreamDeleteFile();
  88 }
  89
  90 void SAL_CALL OSelfTerminateFileStream::seek( sal_Int64 location )
  91 {
  92     m_xSeekable->seek( location );
  93 }
  94
  95 sal_Int64 SAL_CALL OSelfTerminateFileStream::getPosition()
  96 {
  97     return m_xSeekable->getPosition();
  98 }
  99
 100 sal_Int64 SAL_CALL OSelfTerminateFileStream::getLength()
 101 {
 102     return m_xSeekable->getLength();
 103 }
 104
 105 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */