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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "ucbhelper/std_inputstream.hxx"
using namespace std;
using namespace com::sun::star;
namespace ucbhelper
{
StdInputStream::StdInputStream( boost::shared_ptr< istream > pStream ) :
m_pStream( pStream ),
m_nLength( 0 )
{
if ( m_pStream.get() )
{
streampos nInitPos = m_pStream->tellg( );
m_pStream->seekg( 0, ios_base::end );
streampos nEndPos = m_pStream->tellg( );
m_pStream->seekg( nInitPos, ios_base::beg );
m_nLength = sal_Int64( nEndPos - nInitPos );
}
}
StdInputStream::~StdInputStream()
{
}
uno::Any SAL_CALL StdInputStream::queryInterface( const uno::Type& rType ) throw ( uno::RuntimeException, std::exception )
{
uno::Any aRet = ::cppu::queryInterface( rType,
( static_cast< XInputStream* >( this ) ),
( static_cast< XSeekable* >( this ) ) );
return aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType );
}
void SAL_CALL StdInputStream::acquire( ) throw( )
{
OWeakObject::acquire();
}
void SAL_CALL StdInputStream::release( ) throw( )
{
OWeakObject::release();
}
sal_Int32 SAL_CALL StdInputStream::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
throw( io::NotConnectedException, io::BufferSizeExceededException,
io::IOException, uno::RuntimeException, std::exception)
{
osl::MutexGuard aGuard( m_aMutex );
if ( 0 <= nBytesToRead && aData.getLength() < nBytesToRead )
aData.realloc( nBytesToRead );
if ( !m_pStream.get() )
throw io::IOException( );
sal_Int32 nRead = 0;
try
{
m_pStream->read( reinterpret_cast< char* >( aData.getArray( ) ), nBytesToRead );
nRead = m_pStream->gcount();
}
catch ( const ios_base::failure& e )
{
SAL_INFO( "ucbhelper", "StdInputStream::readBytes() error: " << e.what() );
throw io::IOException( );
}
return nRead;
}
sal_Int32 SAL_CALL StdInputStream::readSomeBytes( uno::Sequence< sal_Int8 >& aData,
sal_Int32 nMaxBytesToRead )
throw( io::NotConnectedException, io::BufferSizeExceededException,
io::IOException, uno::RuntimeException, std::exception)
{
osl::MutexGuard aGuard( m_aMutex );
if ( 0 <= nMaxBytesToRead && aData.getLength() < nMaxBytesToRead )
aData.realloc( nMaxBytesToRead );
if ( !m_pStream.get() )
throw io::IOException( );
sal_Int32 nRead = 0;
try
{
nRead = m_pStream->readsome( reinterpret_cast< char* >( aData.getArray( ) ), nMaxBytesToRead );
}
catch ( const ios_base::failure& e )
{
SAL_INFO( "ucbhelper", "StdInputStream::readBytes() error: " << e.what() );
throw io::IOException( );
}
return nRead;
}
void SAL_CALL StdInputStream::skipBytes( sal_Int32 nBytesToSkip )
throw( io::NotConnectedException, io::BufferSizeExceededException,
io::IOException, uno::RuntimeException, std::exception )
{
osl::MutexGuard aGuard( m_aMutex );
if ( !m_pStream.get() )
throw io::IOException( );
try
{
m_pStream->seekg( nBytesToSkip, ios_base::cur );
}
catch ( const ios_base::failure& e )
{
SAL_INFO( "ucbhelper", "StdInputStream::readBytes() error: " << e.what() );
throw io::IOException( );
}
}
sal_Int32 SAL_CALL StdInputStream::available( )
throw(io::NotConnectedException, io::IOException, uno::RuntimeException, std::exception )
{
return sal::static_int_cast< sal_Int32 >( m_nLength - getPosition() );
}
void SAL_CALL StdInputStream::closeInput( )
throw( io::NotConnectedException, io::IOException, uno::RuntimeException, std::exception)
{
// No need to implement this for an istream
}
void SAL_CALL StdInputStream::seek( sal_Int64 location )
throw( lang::IllegalArgumentException, io::IOException, uno::RuntimeException, std::exception )
{
osl::MutexGuard aGuard( m_aMutex );
if ( location < 0 || location > m_nLength )
throw lang::IllegalArgumentException(
"Location can't be negative or greater than the length",
static_cast< cppu::OWeakObject* >( this ), 0 );
if ( !m_pStream.get() )
throw io::IOException( );
try
{
m_pStream->clear( ); // may be needed to rewind the stream
m_pStream->seekg( location, ios_base::beg );
}
catch ( const ios_base::failure& e )
{
SAL_INFO( "ucbhelper", "StdInputStream::readBytes() error: " << e.what() );
throw io::IOException( );
}
}
sal_Int64 SAL_CALL StdInputStream::getPosition( )
throw( io::IOException, uno::RuntimeException, std::exception )
{
osl::MutexGuard aGuard( m_aMutex );
if ( !m_pStream.get() )
throw io::IOException( );
sal_Int64 nPos = m_pStream->tellg( );
if ( -1 == nPos )
throw io::IOException( );
return nPos;
}
sal_Int64 SAL_CALL StdInputStream::getLength( )
throw ( io::IOException, uno::RuntimeException, std::exception )
{
return m_nLength;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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