/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_unotools.hxx"
#include <unotools/streamhelper.hxx>
#include <tools/debug.hxx>

namespace utl
{

//------------------------------------------------------------------------------
void SAL_CALL OInputStreamHelper::acquire() throw ()
{
	InputStreamHelper_Base::acquire();
}

//------------------------------------------------------------------------------
void SAL_CALL OInputStreamHelper::release() throw ()
{
	InputStreamHelper_Base::release();
}

//------------------------------------------------------------------------------
sal_Int32 SAL_CALL OInputStreamHelper::readBytes(staruno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead)
	throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException)
{
	if (!m_xLockBytes.Is())
		throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	if (nBytesToRead < 0)
		throw stario::BufferSizeExceededException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	::osl::MutexGuard aGuard( m_aMutex );
	aData.realloc(nBytesToRead);

	sal_Size nRead;
	ErrCode nError = m_xLockBytes->ReadAt(m_nActPos, (void*)aData.getArray(), nBytesToRead, &nRead);
	// FIXME  nRead could be truncated on 64-bit arches
	m_nActPos += (sal_uInt32)nRead;

	if (nError != ERRCODE_NONE)
		throw stario::IOException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	// adjust sequence if data read is lower than the desired data
	if (nRead < (sal_uInt32)nBytesToRead)
		aData.realloc( nRead );

	return nRead;
}

void SAL_CALL OInputStreamHelper::seek( sal_Int64 location ) throw(::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
    // cast is truncating, but position would be truncated as soon as
    // put into SvLockBytes anyway
    m_nActPos = sal::static_int_cast<sal_uInt32>(location);
}

sal_Int64 SAL_CALL OInputStreamHelper::getPosition(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
{
    return m_nActPos;
}

sal_Int64 SAL_CALL OInputStreamHelper::getLength(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
{
	if (!m_xLockBytes.Is())
        return 0;

	::osl::MutexGuard aGuard( m_aMutex );
    SvLockBytesStat aStat;
    m_xLockBytes->Stat( &aStat, SVSTATFLAG_DEFAULT );
	return aStat.nSize;
}

//------------------------------------------------------------------------------
sal_Int32 SAL_CALL OInputStreamHelper::readSomeBytes(staruno::Sequence< sal_Int8 >& aData,
													 sal_Int32 nMaxBytesToRead)
	throw (stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException)
{
	// read all data desired
	return readBytes(aData, nMaxBytesToRead);
}

//------------------------------------------------------------------------------
void SAL_CALL OInputStreamHelper::skipBytes(sal_Int32 nBytesToSkip)
	throw (stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if (!m_xLockBytes.Is())
		throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	if (nBytesToSkip < 0)
		throw stario::BufferSizeExceededException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	m_nActPos += nBytesToSkip;
}

//------------------------------------------------------------------------------
sal_Int32 SAL_CALL OInputStreamHelper::available()
	throw (stario::NotConnectedException, stario::IOException, staruno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if (!m_xLockBytes.Is())
		throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	return m_nAvailable;
}

//------------------------------------------------------------------------------
void SAL_CALL OInputStreamHelper::closeInput()
	throw (stario::NotConnectedException, stario::IOException, staruno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if (!m_xLockBytes.Is())
		throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	m_xLockBytes = NULL;
}

/*************************************************************************/
//------------------------------------------------------------------------------
void SAL_CALL OOutputStreamHelper::acquire() throw ()
{
	OutputStreamHelper_Base::acquire();
}

//------------------------------------------------------------------------------
void SAL_CALL OOutputStreamHelper::release() throw ()
{
	OutputStreamHelper_Base::release();
}
// stario::XOutputStream
//------------------------------------------------------------------------------
void SAL_CALL OOutputStreamHelper::writeBytes(const staruno::Sequence< sal_Int8 >& aData)
	throw (stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if (!m_xLockBytes.Is())
		throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	sal_Size nWritten;
	ErrCode nError = m_xLockBytes->WriteAt( m_nActPos, aData.getConstArray(), aData.getLength(), &nWritten );
	// FIXME  nWritten could be truncated on 64-bit arches
	m_nActPos += (sal_uInt32)nWritten;

	if (nError != ERRCODE_NONE ||
		sal::static_int_cast<sal_Int32>(nWritten) != aData.getLength())
	{
		throw stario::IOException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));
	}
}

//------------------------------------------------------------------
void SAL_CALL OOutputStreamHelper::flush()
	throw (stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if (!m_xLockBytes.Is())
		throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	ErrCode nError = m_xLockBytes->Flush();
	if (nError != ERRCODE_NONE)
		throw stario::IOException(::rtl::OUString(),static_cast<staruno::XWeak*>(this));
}

//------------------------------------------------------------------
void SAL_CALL OOutputStreamHelper::closeOutput(  )
	throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );
	if (!m_xLockBytes.Is())
		throw stario::NotConnectedException(::rtl::OUString(), static_cast<staruno::XWeak*>(this));

	m_xLockBytes = NULL;
}

} // namespace utl