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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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <ucbhelper/fd_inputstream.hxx>
#include <com/sun/star/io/IOException.hpp>
#include <osl/diagnose.h>
#include <sal/log.hxx>
#include <algorithm>
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
using namespace com::sun::star::io;
namespace ucbhelper
{
FdInputStream::FdInputStream( oslFileHandle tmpfl )
: m_tmpfl(tmpfl)
, m_nLength( 0 )
{
if ( !m_tmpfl )
osl_createTempFile( nullptr, &m_tmpfl, nullptr );
OSL_ENSURE( m_tmpfl, "input stream without tempfile!" );
if ( osl_setFilePos( m_tmpfl, osl_Pos_End, 0 ) == osl_File_E_None )
{
sal_uInt64 nFileSize = 0;
if ( osl_getFilePos( m_tmpfl, &nFileSize ) == osl_File_E_None )
m_nLength = nFileSize;
oslFileError rc = osl_setFilePos( m_tmpfl, osl_Pos_Absolut, 0 );
SAL_WARN_IF(rc != osl_File_E_None, "ucbhelper", "osl_setFilePos failed");
}
}
FdInputStream::~FdInputStream()
{
if ( nullptr != m_tmpfl)
osl_closeFile(m_tmpfl);
}
sal_Int32 SAL_CALL FdInputStream::readBytes(Sequence< sal_Int8 >& aData,
sal_Int32 nBytesToRead)
{
osl::MutexGuard aGuard(m_aMutex);
sal_uInt64 nBeforePos( 0 );
sal_uInt64 nBytesRequested( nBytesToRead );
sal_uInt64 nBytesRead( 0 );
osl_getFilePos( m_tmpfl, &nBeforePos );
if ( 0 == ( nBytesRequested = std::min< sal_uInt64 >( m_nLength - nBeforePos, nBytesRequested ) ) )
return 0;
if ( 0 <= nBytesToRead && aData.getLength() < nBytesToRead )
aData.realloc( nBytesToRead );
if ( osl_readFile( m_tmpfl, aData.getArray(), nBytesRequested, &nBytesRead ) != osl_File_E_None )
throw IOException();
return sal_Int32( nBytesRead );
}
sal_Int32 SAL_CALL FdInputStream::readSomeBytes( Sequence< sal_Int8 >& aData,
sal_Int32 nMaxBytesToRead )
{
return readBytes(aData,nMaxBytesToRead);
}
void SAL_CALL FdInputStream::skipBytes(sal_Int32 nBytesToSkip)
{
osl::MutexGuard aGuard(m_aMutex);
if(!m_tmpfl)
throw IOException();
oslFileError rc = osl_setFilePos( m_tmpfl, osl_Pos_Current, nBytesToSkip );
SAL_WARN_IF(rc != osl_File_E_None, "ucbhelper", "osl_setFilePos failed");
}
sal_Int32 SAL_CALL FdInputStream::available()
{
return std::min<sal_Int64>(SAL_MAX_INT32, m_nLength - getPosition());
}
void SAL_CALL FdInputStream::closeInput()
{
osl::MutexGuard aGuard(m_aMutex);
if(m_tmpfl)
{
osl_closeFile(m_tmpfl);
m_tmpfl = nullptr;
}
}
void SAL_CALL FdInputStream::seek(sal_Int64 location)
{
osl::MutexGuard aGuard(m_aMutex);
if(!m_tmpfl)
throw IOException();
oslFileError rc = osl_setFilePos( m_tmpfl, osl_Pos_Absolut, location );
SAL_WARN_IF(rc != osl_File_E_None, "ucbhelper", "osl_setFilePos failed");
}
sal_Int64 SAL_CALL
FdInputStream::getPosition()
{
osl::MutexGuard aGuard(m_aMutex);
if(!m_tmpfl)
throw IOException();
sal_uInt64 nFilePos = 0;
osl_getFilePos( m_tmpfl, &nFilePos );
return nFilePos;
}
sal_Int64 SAL_CALL FdInputStream::getLength()
{
return m_nLength;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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