package/source/xstor/oseekinstream.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/lang/DisposedException.hpp>
  21 #include <cppuhelper/typeprovider.hxx>
  22 #include <osl/diagnose.h>
  23
  24 #include "oseekinstream.hxx"
  25 #include "owriteablestream.hxx"
  26
  27 using namespace ::com::sun::star;
  28
  29 OInputSeekStream::OInputSeekStream( OWriteStream_Impl& pImpl,
  30                                     uno::Reference < io::XInputStream > xStream,
  31                                     const uno::Sequence< beans::PropertyValue >& aProps,
  32                                     sal_Int32 nStorageType )
  33 : OInputCompStream( pImpl, xStream, aProps, nStorageType )
  34 {
  35     if ( m_xStream.is() )
  36     {
  37         m_xSeekable = uno::Reference< io::XSeekable >( m_xStream, uno::UNO_QUERY );
  38         OSL_ENSURE( m_xSeekable.is(), "No seeking support!\n" );
  39     }
  40 }
  41
  42 OInputSeekStream::OInputSeekStream( uno::Reference < io::XInputStream > xStream,
  43                                     const uno::Sequence< beans::PropertyValue >& aProps,
  44                                     sal_Int32 nStorageType )
  45 : OInputCompStream( xStream, aProps, nStorageType )
  46 {
  47     if ( m_xStream.is() )
  48     {
  49         m_xSeekable = uno::Reference< io::XSeekable >( m_xStream, uno::UNO_QUERY );
  50         OSL_ENSURE( m_xSeekable.is(), "No seeking support!\n" );
  51     }
  52 }
  53
  54 OInputSeekStream::~OInputSeekStream()
  55 {
  56 }
  57
  58 uno::Sequence< uno::Type > SAL_CALL OInputSeekStream::getTypes()
  59         throw ( uno::RuntimeException )
  60 {
  61     static ::cppu::OTypeCollection* pTypeCollection = NULL ;
  62
  63     if ( pTypeCollection == NULL )
  64     {
  65         ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() ) ;
  66
  67         if ( pTypeCollection == NULL )
  68         {
  69             static ::cppu::OTypeCollection aTypeCollection(
  70                     ::getCppuType(( const uno::Reference< io::XSeekable >* )NULL ),
  71                     OInputCompStream::getTypes() );
  72
  73             pTypeCollection = &aTypeCollection ;
  74         }
  75     }
  76
  77     return pTypeCollection->getTypes() ;
  78 }
  79
  80 uno::Any SAL_CALL OInputSeekStream::queryInterface( const uno::Type& rType )
  81         throw( uno::RuntimeException )
  82 {
  83     // Attention:
  84     //  Don't use mutex or guard in this method!!! Is a method of XInterface.
  85
  86     uno::Any aReturn( ::cppu::queryInterface( rType,
  87                                            static_cast< io::XSeekable* >( this ) ) );
  88
  89     if ( aReturn.hasValue() == sal_True )
  90     {
  91         return aReturn ;
  92     }
  93
  94     return OInputCompStream::queryInterface( rType ) ;
  95 }
  96
  97 void SAL_CALL OInputSeekStream::acquire()
  98         throw()
  99 {
 100     OInputCompStream::acquire();
 101 }
 102
 103 void SAL_CALL OInputSeekStream::release()
 104         throw()
 105 {
 106     OInputCompStream::release();
 107 }
 108
 109
 110 void SAL_CALL OInputSeekStream::seek( sal_Int64 location )
 111         throw ( lang::IllegalArgumentException,
 112                 io::IOException,
 113                 uno::RuntimeException )
 114 {
 115     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 116     if ( m_bDisposed )
 117     {
 118         ::package::StaticAddLog( OSL_LOG_PREFIX "Disposed!" );
 119         throw lang::DisposedException();
 120     }
 121
 122     if ( !m_xSeekable.is() )
 123     {
 124         ::package::StaticAddLog( OSL_LOG_PREFIX "No seekable!" );
 125         throw uno::RuntimeException();
 126     }
 127
 128     m_xSeekable->seek( location );
 129 }
 130
 131 sal_Int64 SAL_CALL OInputSeekStream::getPosition()
 132         throw ( io::IOException,
 133                 uno::RuntimeException)
 134 {
 135     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 136     if ( m_bDisposed )
 137     {
 138         ::package::StaticAddLog( OSL_LOG_PREFIX "Disposed!" );
 139         throw lang::DisposedException();
 140     }
 141
 142     if ( !m_xSeekable.is() )
 143     {
 144         ::package::StaticAddLog( OSL_LOG_PREFIX "No seekable!" );
 145         throw uno::RuntimeException();
 146     }
 147
 148     return m_xSeekable->getPosition();
 149 }
 150
 151 sal_Int64 SAL_CALL OInputSeekStream::getLength()
 152         throw ( io::IOException,
 153                 uno::RuntimeException )
 154 {
 155     ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 156     if ( m_bDisposed )
 157     {
 158         ::package::StaticAddLog( OSL_LOG_PREFIX "Disposed!" );
 159         throw lang::DisposedException();
 160     }
 161
 162     if ( !m_xSeekable.is() )
 163     {
 164         ::package::StaticAddLog( OSL_LOG_PREFIX "No seekable!" );
 165         throw uno::RuntimeException();
 166     }
 167
 168     return m_xSeekable->getLength();
 169 }
 170
 171 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */