/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/


#ifndef _ZIP_OUTPUT_STREAM_HXX
#define _ZIP_OUTPUT_STREAM_HXX

#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/xml/crypto/XCipherContext.hpp>
#include <com/sun/star/xml/crypto/XDigestContext.hpp>

#include <ByteChucker.hxx>
#include <Deflater.hxx>
#include <CRC32.hxx>

#include <vector>

struct ZipEntry;
class ZipPackageStream;

class ZipOutputStream
{
protected:
    ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory > m_xFactory;
	::com::sun::star::uno::Reference< ::com::sun::star::io::XOutputStream > xStream;

	::std::vector < ZipEntry * >			aZipList;

	::com::sun::star::uno::Sequence< sal_Int8 > m_aDeflateBuffer;

	::rtl::OUString		sComment;
	Deflater			aDeflater;

    ::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XCipherContext > m_xCipherContext;
    ::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XDigestContext > m_xDigestContext;

	CRC32				aCRC;
	ByteChucker			aChucker;
	ZipEntry 			*pCurrentEntry;
	sal_Int16			nMethod, nLevel, mnDigested;
	sal_Bool			bFinished, bEncryptCurrentEntry;
	ZipPackageStream*   m_pCurrentStream;

public:
	ZipOutputStream(
        const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& xFactory,
        const ::com::sun::star::uno::Reference< ::com::sun::star::io::XOutputStream > &xOStream );
	~ZipOutputStream();
	
	// rawWrite to support a direct write to the output stream
    void SAL_CALL rawWrite( ::com::sun::star::uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    void SAL_CALL rawCloseEntry(  )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);

	// XZipOutputStream interfaces
    void SAL_CALL setMethod( sal_Int32 nNewMethod )
		throw(::com::sun::star::uno::RuntimeException);
    void SAL_CALL setLevel( sal_Int32 nNewLevel )
		throw(::com::sun::star::uno::RuntimeException);
    void SAL_CALL putNextEntry( ZipEntry& rEntry, 
            ZipPackageStream* pStream,
			sal_Bool bEncrypt = sal_False )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    void SAL_CALL closeEntry(  )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    void SAL_CALL write( const ::com::sun::star::uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    void SAL_CALL finish(  )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    static sal_uInt32 getCurrentDosTime ( );
protected:
	void doDeflate();
	void writeEND(sal_uInt32 nOffset, sal_uInt32 nLength)
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
	void writeCEN( const ZipEntry &rEntry )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
	void writeEXT( const ZipEntry &rEntry )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
	sal_Int32 writeLOC( const ZipEntry &rEntry )
		throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
};

#endif