/*
 * (c) Copyright Ascensio System SIA 2010-2017
 *
 * 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 Lubanas st. 125a-25, Riga, Latvia,
 * EU, LV-1021.
 *
 * 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
 *
 */
#ifndef _PDF_READER_FONT_FILE_BASE_H
#define _PDF_READER_FONT_FILE_BASE_H

namespace PdfReader
{
	typedef void(*FontFileOutputFunc)(void *pStream, char *sData, int nLen);

	//------------------------------------------------------------------------
	// CFontFileBase
	//------------------------------------------------------------------------

	class CFontFileBase
	{
	public:

		virtual ~CFontFileBase();

	protected:

		CFontFileBase(char *sFile, int nLen, bool bFreeFileData);

		static char *ReadFile(wchar_t *wsFileName, int *pnFileLen);

		// S = signed / U = unsigned
		// 8/16/32/Var = word length, in bytes
		// BE = big endian
		int          GetS8(int nPos, bool *pbSuccess);
		int          GetU8(int nPos, bool *pbSuccess);
		int          GetS16BE(int nPos, bool *pbSuccess);
		int          GetU16BE(int nPos, bool *pbSuccess);
		int          GetS32BE(int nPos, bool *pbSuccess);
		unsigned int GetU32BE(int nPos, bool *pbSuccess);
		unsigned int GetUVarBE(int nPos, int nSize, bool *pbSuccess);

		bool CheckRegion(int nPos, int nSize);

	protected:

		unsigned char *m_sFileData;
		unsigned char *m_sFile;
		int            m_nLen;
		bool           m_bFreeFileData;

	};
}

#endif // _PDF_READER_FONT_FILE_BASE_H