package/source/zippackage/wrapstreamforshare.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 <osl/diagnose.h>
  21
  22 #include "wrapstreamforshare.hxx"
  23
  24 using namespace ::com::sun::star;
  25
  26
  27 WrapStreamForShare::WrapStreamForShare( const uno::Reference< io::XInputStream >& xInStream,
  28                                         const SotMutexHolderRef& rMutexRef )
  29 : m_rMutexRef( rMutexRef )
  30 , m_xInStream( xInStream )
  31 , m_nCurPos( 0 )
  32 {
  33     m_xSeekable = uno::Reference< io::XSeekable >( m_xInStream, uno::UNO_QUERY );
  34     if ( !m_rMutexRef.Is() || !m_xInStream.is() || !m_xSeekable.is() )
  35     {
  36         OSL_FAIL( "Wrong initialization of wrapping stream!\n" );
  37         throw uno::RuntimeException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
  38     }
  39 }
  40
  41 WrapStreamForShare::~WrapStreamForShare()
  42 {
  43 }
  44
  45 // XInputStream
  46 sal_Int32 SAL_CALL WrapStreamForShare::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
  47         throw ( io::NotConnectedException,
  48                 io::BufferSizeExceededException,
  49                 io::IOException,
  50                 uno::RuntimeException )
  51 {
  52     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
  53
  54     if ( !m_xInStream.is() )
  55         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
  56
  57     m_xSeekable->seek( m_nCurPos );
  58
  59     sal_Int32 nRead = m_xInStream->readBytes( aData, nBytesToRead );
  60     m_nCurPos += nRead;
  61
  62     return nRead;
  63 }
  64
  65 sal_Int32 SAL_CALL WrapStreamForShare::readSomeBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
  66         throw ( io::NotConnectedException,
  67                 io::BufferSizeExceededException,
  68                 io::IOException,
  69                 uno::RuntimeException )
  70 {
  71     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
  72
  73     if ( !m_xInStream.is() )
  74         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
  75
  76     m_xSeekable->seek( m_nCurPos );
  77
  78     sal_Int32 nRead = m_xInStream->readSomeBytes( aData, nMaxBytesToRead );
  79     m_nCurPos += nRead;
  80
  81     return nRead;
  82 }
  83
  84 void SAL_CALL WrapStreamForShare::skipBytes( sal_Int32 nBytesToSkip )
  85         throw ( io::NotConnectedException,
  86                 io::BufferSizeExceededException,
  87                 io::IOException,
  88                 uno::RuntimeException )
  89 {
  90     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
  91
  92     if ( !m_xInStream.is() )
  93         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
  94
  95     m_xSeekable->seek( m_nCurPos );
  96
  97     m_xInStream->skipBytes( nBytesToSkip );
  98     m_nCurPos = m_xSeekable->getPosition();
  99 }
 100
 101 sal_Int32 SAL_CALL WrapStreamForShare::available()
 102         throw ( io::NotConnectedException,
 103                 io::IOException,
 104                 uno::RuntimeException )
 105 {
 106     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 107
 108     if ( !m_xInStream.is() )
 109         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
 110
 111     return m_xInStream->available();
 112 }
 113
 114 void SAL_CALL WrapStreamForShare::closeInput()
 115         throw ( io::NotConnectedException,
 116                 io::IOException,
 117                 uno::RuntimeException )
 118 {
 119     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 120
 121     if ( !m_xInStream.is() )
 122         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
 123
 124     // the package is the owner so it will close the stream
 125     // m_xInStream->closeInput();
 126     m_xInStream = uno::Reference< io::XInputStream >();
 127     m_xSeekable = uno::Reference< io::XSeekable >();
 128 }
 129
 130 // XSeekable
 131 void SAL_CALL WrapStreamForShare::seek( sal_Int64 location )
 132         throw ( lang::IllegalArgumentException,
 133                 io::IOException,
 134                 uno::RuntimeException )
 135 {
 136     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 137
 138     if ( !m_xInStream.is() )
 139         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
 140
 141     // let stream implementation do all the checking
 142     m_xSeekable->seek( location );
 143
 144     m_nCurPos = m_xSeekable->getPosition();
 145 }
 146
 147 sal_Int64 SAL_CALL WrapStreamForShare::getPosition()
 148         throw ( io::IOException,
 149                 uno::RuntimeException)
 150 {
 151     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 152
 153     if ( !m_xInStream.is() )
 154         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
 155
 156     return m_nCurPos;
 157 }
 158
 159 sal_Int64 SAL_CALL WrapStreamForShare::getLength()
 160         throw ( io::IOException,
 161                 uno::RuntimeException )
 162 {
 163     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 164
 165     if ( !m_xInStream.is() )
 166         throw io::IOException(OSL_LOG_PREFIX, uno::Reference< uno::XInterface >() );
 167
 168     return m_xSeekable->getLength();
 169 }
 170
 171 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */