/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
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 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_xmloff.hxx"
#include <rtl/ustrbuf.hxx>
#include <com/sun/star/io/XInputStream.hpp>
#include <xmloff/xmluconv.hxx>
#include <xmloff/xmlexp.hxx>
#include "xmloff/xmlnmspe.hxx"
#include "XMLBase64Export.hxx"

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::io;
using ::rtl::OUString;
using ::rtl::OUStringBuffer;

#define INPUT_BUFFER_SIZE 54
#define OUTPUT_BUFFER_SIZE 72

XMLBase64Export::XMLBase64Export( SvXMLExport& rExp ) :
	rExport( rExp ){
}

sal_Bool XMLBase64Export::exportXML( const Reference < XInputStream> & rIn )
{
	sal_Bool bRet = sal_True;
	try
	{
		Sequence < sal_Int8 > aInBuff( INPUT_BUFFER_SIZE );
		OUStringBuffer aOutBuff( OUTPUT_BUFFER_SIZE );
		sal_Int32 nRead;
		do
		{
			nRead = rIn->readBytes( aInBuff, INPUT_BUFFER_SIZE );
			if( nRead > 0 )
			{
				GetExport().GetMM100UnitConverter().encodeBase64( aOutBuff,
																  aInBuff );
				GetExport().Characters( aOutBuff.makeStringAndClear() );
				if( nRead == INPUT_BUFFER_SIZE )
					GetExport().IgnorableWhitespace();
			}
		}
		while( nRead == INPUT_BUFFER_SIZE );
	}
	catch( ... )
	{
		bRet = sal_False;
	}

	return bRet;
}

sal_Bool XMLBase64Export::exportElement(
			const Reference < XInputStream > & rIn,
			sal_uInt16 nNamespace,
			enum ::xmloff::token::XMLTokenEnum eName )
{
	SvXMLElementExport aElem( GetExport(), nNamespace, eName, sal_True,
							  sal_True );
	return exportXML( rIn );
}

sal_Bool XMLBase64Export::exportOfficeBinaryDataElement(
			const Reference < XInputStream > & rIn )
{
	return exportElement( rIn, XML_NAMESPACE_OFFICE,
				   		  ::xmloff::token::XML_BINARY_DATA );
}