/*
 * (c) Copyright Ascensio System SIA 2010-2023
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation. In accordance with
 * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
 * that Ascensio System SIA expressly excludes the warranty of non-infringement
 * of any third-party rights.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For
 * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
 * street, Riga, Latvia, EU, LV-1050.
 *
 * The  interactive user interfaces in modified source and object code versions
 * of the Program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU AGPL version 3.
 *
 * Pursuant to Section 7(b) of the License you must retain the original Product
 * logo when distributing the program. Pursuant to Section 7(e) we decline to
 * grant you any rights under trademark law for use of our trademarks.
 *
 * All the Product's GUI elements, including illustrations and icon sets, as
 * well as technical writing content are licensed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International. See the License
 * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 */

#include "StyleSheetInformation.h"

namespace DocFileFormat
{
	/// Parses the bytes to retrieve a StyleSheetInformation
	StyleSheetInformation::StyleSheetInformation (unsigned char* bytes, int size) : 
		cstd(0), cbSTDBaseInFile(0), fStdStylenamesWritten(false), stiMaxWhenSaved(0), istdMaxFixedWhenSaved(0), nVerBuiltInNamesWhenSaved(0), cbLSD(0)
	{
		if ((0 != size) || (NULL != bytes))
		{
			cstd								=	FormatUtils::BytesToUInt16 ( bytes, 0, size );
			cbSTDBaseInFile						=	FormatUtils::BytesToUInt16 ( bytes, 2, size );

			if ( bytes[4] == 1 )
			{
				fStdStylenamesWritten			=	true;
			}

			//unsigned char 5 is spare
			this->stiMaxWhenSaved				=	FormatUtils::BytesToUInt16 ( bytes, 6, size );
			this->istdMaxFixedWhenSaved			=	FormatUtils::BytesToUInt16 ( bytes, 8, size );
			this->nVerBuiltInNamesWhenSaved		=	FormatUtils::BytesToUInt16 ( bytes, 10, size );

			this->rgftcStandardChpStsh			=	std::vector<unsigned short>( 4 );

			this->rgftcStandardChpStsh[0]		=	FormatUtils::BytesToUInt16 ( bytes, 12, size );
			this->rgftcStandardChpStsh[1]		=	FormatUtils::BytesToUInt16 ( bytes, 14, size );
			this->rgftcStandardChpStsh[2]		=	FormatUtils::BytesToUInt16 ( bytes, 16, size );

			if ( size > 18 )
				rgftcStandardChpStsh[3]			=	FormatUtils::BytesToUInt16 ( bytes, 18, size );


			// not all stylesheet contain latent styles
			if ( size > 20 )
			{
				cbLSD =	FormatUtils::BytesToUInt16 ( bytes, 20, size );

				for ( int i = 0; i < stiMaxWhenSaved; ++i)
				{
					_UINT32 iLSD = FormatUtils::BytesToUInt32 ( bytes, ( 22 + (i * cbLSD) ), size );
					
					LSD lsd;
					lsd.fLocked = GETBIT(iLSD, 0);
					lsd.fSemiHidden = GETBIT(iLSD, 1);
					lsd.fUnhideWhenUsed = GETBIT(iLSD, 2);
					lsd.fQFormat = GETBIT(iLSD, 3);
					lsd.iPriority = GETBITS(iLSD, 4, 15);
					lsd.fReserved = GETBITS(iLSD, 16, 31);
					mpstilsd.push_back( lsd );
				}
			}
		}
	}
}