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
  21 #include <com/sun/star/ucb/SimpleFileAccess.hpp>
  22
  23 #include "selfterminatefilestream.hxx"
  24 #include <comphelper/processfactory.hxx>
  25
  26 using namespace ::com::sun::star;
  27
  28 //-----------------------------------------------
  29 OSelfTerminateFileStream::OSelfTerminateFileStream( const uno::Reference< uno::XComponentContext > xContext, const OUString& aURL )
  30 : m_aURL( aURL )
  31 {
  32     uno::Reference< uno::XComponentContext > xOwnContext = xContext;
  33     if ( !xOwnContext.is() )
  34         xOwnContext.set( ::comphelper::getProcessComponentContext(), uno::UNO_SET_THROW );
  35
  36     // IMPORTANT: The implementation is based on idea that m_xFileAccess, m_xInputStream and m_xSeekable are always set
  37     // otherwise an exception is thrown in constructor
  38
  39     m_xFileAccess.set( ucb::SimpleFileAccess::create(xOwnContext) );
  40
  41     m_xInputStream.set( m_xFileAccess->openFileRead( aURL ), uno::UNO_SET_THROW );
  42     m_xSeekable.set( m_xInputStream, uno::UNO_QUERY_THROW );
  43 }
  44
  45 //-----------------------------------------------
  46 OSelfTerminateFileStream::~OSelfTerminateFileStream()
  47 {
  48     CloseStreamDeleteFile();
  49 }
  50
  51 //-----------------------------------------------
  52 void OSelfTerminateFileStream::CloseStreamDeleteFile()
  53 {
  54     try
  55     {
  56         m_xInputStream->closeInput();
  57     }
  58     catch( uno::Exception& )
  59     {}
  60
  61     try
  62     {
  63         m_xFileAccess->kill( m_aURL );
  64     }
  65     catch( uno::Exception& )
  66     {}
  67 }
  68
  69 //-----------------------------------------------
  70 sal_Int32 SAL_CALL OSelfTerminateFileStream::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
  71         throw ( io::NotConnectedException,
  72                 io::BufferSizeExceededException,
  73                 io::IOException,
  74                 uno::RuntimeException )
  75 {
  76     return m_xInputStream->readBytes( aData, nBytesToRead );
  77 }
  78
  79 //-----------------------------------------------
  80 sal_Int32 SAL_CALL OSelfTerminateFileStream::readSomeBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
  81         throw ( io::NotConnectedException,
  82                 io::BufferSizeExceededException,
  83                 io::IOException,
  84                 uno::RuntimeException )
  85 {
  86     return m_xInputStream->readSomeBytes( aData, nMaxBytesToRead );
  87 }
  88
  89 //-----------------------------------------------
  90 void SAL_CALL OSelfTerminateFileStream::skipBytes( sal_Int32 nBytesToSkip )
  91         throw ( io::NotConnectedException,
  92                 io::BufferSizeExceededException,
  93                 io::IOException,
  94                 uno::RuntimeException )
  95 {
  96     return m_xInputStream->skipBytes( nBytesToSkip );
  97 }
  98
  99 //-----------------------------------------------
 100 sal_Int32 SAL_CALL OSelfTerminateFileStream::available(  )
 101         throw ( io::NotConnectedException,
 102                 io::IOException,
 103                 uno::RuntimeException )
 104 {
 105     return m_xInputStream->available();
 106 }
 107
 108 //-----------------------------------------------
 109 void SAL_CALL OSelfTerminateFileStream::closeInput(  )
 110         throw ( io::NotConnectedException,
 111                 io::IOException,
 112                 uno::RuntimeException )
 113 {
 114     CloseStreamDeleteFile();
 115 }
 116
 117 //-----------------------------------------------
 118 void SAL_CALL OSelfTerminateFileStream::seek( sal_Int64 location )
 119         throw ( lang::IllegalArgumentException,
 120                 io::IOException,
 121                 uno::RuntimeException )
 122 {
 123     m_xSeekable->seek( location );
 124 }
 125
 126 //-----------------------------------------------
 127 sal_Int64 SAL_CALL OSelfTerminateFileStream::getPosition()
 128         throw ( io::IOException,
 129                 uno::RuntimeException)
 130 {
 131     return m_xSeekable->getPosition();
 132 }
 133
 134 //-----------------------------------------------
 135 sal_Int64 SAL_CALL OSelfTerminateFileStream::getLength()
 136         throw ( io::IOException,
 137                 uno::RuntimeException )
 138 {
 139     return m_xSeekable->getLength();
 140 }
 141
 142 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */