oseekinstream.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
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 *   License, Version 2.0 (the "License"); you may not use this file
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#include <com/sun/star/lang/DisposedException.hpp>
#include <cppuhelper/typeprovider.hxx>
#include <cppuhelper/queryinterface.hxx>
#include <osl/diagnose.h>
#include <sal/log.hxx>
 
#include "oseekinstream.hxx"
#include "owriteablestream.hxx"
 
using namespace ::com::sun::star;
 
OInputSeekStream::OInputSeekStream( OWriteStream_Impl& pImpl,
                                    uno::Reference < io::XInputStream > const & xStream,
                                    const uno::Sequence< beans::PropertyValue >& aProps,
                                    sal_Int32 nStorageType )
: OInputCompStream( pImpl, xStream, aProps, nStorageType )
{
    m_xSeekable.set( m_xStream, uno::UNO_QUERY );
    OSL_ENSURE( m_xSeekable.is(), "No seeking support!" );
}
 
OInputSeekStream::OInputSeekStream( uno::Reference < io::XInputStream > const & xStream,
                                    const uno::Sequence< beans::PropertyValue >& aProps,
                                    sal_Int32 nStorageType )
: OInputCompStream( xStream, aProps, nStorageType )
{
    m_xSeekable.set( m_xStream, uno::UNO_QUERY );
    OSL_ENSURE( m_xSeekable.is(), "No seeking support!" );
}
 
OInputSeekStream::~OInputSeekStream()
{
}
 
uno::Sequence< uno::Type > SAL_CALL OInputSeekStream::getTypes()
{
    static cppu::OTypeCollection aTypeCollection(cppu::UnoType<io::XSeekable>::get(),
                                                   OInputCompStream::getTypes());
 
    return aTypeCollection.getTypes();
}
 
uno::Any SAL_CALL OInputSeekStream::queryInterface( const uno::Type& rType )
{
    // Attention:
    //  Don't use mutex or guard in this method!!! Is a method of XInterface.
 
    uno::Any aReturn( ::cppu::queryInterface( rType,
                                           static_cast< io::XSeekable* >( this ) ) );
 
    if ( aReturn.hasValue() )
    {
        return aReturn ;
    }
 
    return OInputCompStream::queryInterface( rType ) ;
}
 
void SAL_CALL OInputSeekStream::acquire()
        noexcept
{
    OInputCompStream::acquire();
}
 
void SAL_CALL OInputSeekStream::release()
        noexcept
{
    OInputCompStream::release();
}
 
void SAL_CALL OInputSeekStream::seek( sal_Int64 location )
{
    ::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
    if ( m_bDisposed )
    {
        SAL_INFO("package.xstor", "Disposed!");
        throw lang::DisposedException();
    }
 
    if ( !m_xSeekable.is() )
    {
        SAL_INFO("package.xstor", "No seekable!");
        throw uno::RuntimeException();
    }
 
    m_xSeekable->seek( location );
}
 
sal_Int64 SAL_CALL OInputSeekStream::getPosition()
{
    ::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
    if ( m_bDisposed )
    {
        SAL_INFO("package.xstor", "Disposed!");
        throw lang::DisposedException();
    }
 
    if ( !m_xSeekable.is() )
    {
        SAL_INFO("package.xstor", "No seekable!");
        throw uno::RuntimeException();
    }
 
    return m_xSeekable->getPosition();
}
 
sal_Int64 SAL_CALL OInputSeekStream::getLength()
{
    ::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
    if ( m_bDisposed )
    {
        SAL_INFO("package.xstor", "Disposed!");
        throw lang::DisposedException();
    }
 
    if ( !m_xSeekable.is() )
    {
        SAL_INFO("package.xstor", "No seekable!");
        throw uno::RuntimeException();
    }
 
    return m_xSeekable->getLength();
}
 
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