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