269 lines
8.2 KiB
C++
269 lines
8.2 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2023
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#ifndef _ASC_FONTCONVERTER_FONT_FILE_BASE_H
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#define _ASC_FONTCONVERTER_FONT_FILE_BASE_H
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#include <stdio.h>
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#include "MemoryUtils.h"
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#include "../../common/File.h"
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namespace NSFontConverter
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{
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//------------------------------------------------------------------------
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typedef void (*FontFileOutputFunc)(void *pStream, const char *sData, int nLen);
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//------------------------------------------------------------------------
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// CFontFileBase
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//------------------------------------------------------------------------
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class CFontFileBase
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{
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public:
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virtual ~CFontFileBase()
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{
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if ( m_bFreeFileData )
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MemUtilsFree( m_sFileData );
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}
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protected:
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CFontFileBase(char *sFile, int nLen, bool bFreeFileData)
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{
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m_sFileData = m_sFile = (unsigned char *)sFile;
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m_nLen = (nLen > 0) ? 0 : (unsigned int)nLen;
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m_nPos = 0;
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m_bFreeFileData = bFreeFileData;
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}
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void Reset()
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{
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m_nPos = 0;
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}
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static char *ReadFile(const wchar_t *wsFileName, int *pnFileLen)
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{
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NSFile::CFileBinary oFile;
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if ( !oFile.OpenFile(wsFileName) )
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return NULL;
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int nLen = (int)oFile.GetFileSize();
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char *sBuffer = (char *)MemUtilsMalloc( nLen );
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DWORD dwRead = 0;
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oFile.ReadFile((BYTE*)sBuffer, (DWORD)nLen, dwRead);
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if ((int)dwRead != nLen)
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{
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MemUtilsFree( sBuffer );
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return NULL;
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}
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*pnFileLen = nLen;
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return sBuffer;
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}
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// S = signed / U = unsigned
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// 8/16/32/Var = word length, in bytes
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// BE = big endian
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int GetS8 (const unsigned int& nPos, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( nPos >= m_nLen )
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{
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*pbSuccess = false;
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return 0;
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}
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int nRes = m_sFile[ nPos ];
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if ( nRes & 0x80 )
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nRes |= ~0xff;
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return nRes;
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}
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int GetU8 (const unsigned int& nPos, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( nPos >= m_nLen )
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{
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*pbSuccess = false;
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return 0;
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}
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return m_sFile[ nPos ];
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}
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int GetS16BE (const unsigned int& nPos, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( m_nLen < 2 || nPos > (m_nLen - 2) )
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{
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*pbSuccess = false;
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return 0;
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}
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int nRes = m_sFile[nPos];
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nRes = (nRes << 8) + m_sFile[ nPos + 1 ];
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if ( nRes & 0x8000 )
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nRes |= ~0xffff;
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return nRes;
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}
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int GetU16BE (const unsigned int& nPos, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( m_nLen < 2 || nPos > (m_nLen - 2) )
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{
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*pbSuccess = false;
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return 0;
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}
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int nRes = m_sFile[ nPos ];
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nRes = (nRes << 8) + m_sFile[ nPos + 1 ];
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return nRes;
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}
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int GetS32BE (const unsigned int& nPos, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( m_nLen < 4 || nPos > (m_nLen - 4) )
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{
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*pbSuccess = false;
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return 0;
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}
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int nRes = m_sFile[ nPos ];
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nRes = (nRes << 8) + m_sFile[nPos + 1];
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nRes = (nRes << 8) + m_sFile[nPos + 2];
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nRes = (nRes << 8) + m_sFile[nPos + 3];
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if ( nRes & 0x80000000 )
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nRes |= ~0xffffffff;
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return nRes;
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}
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unsigned int GetU32BE (const unsigned int& nPos, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( m_nLen < 4 || nPos > (m_nLen - 4) )
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{
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*pbSuccess = false;
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return 0;
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}
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unsigned int nRes = m_sFile[nPos];
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nRes = (nRes << 8) + m_sFile[nPos + 1];
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nRes = (nRes << 8) + m_sFile[nPos + 2];
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nRes = (nRes << 8) + m_sFile[nPos + 3];
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return nRes;
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}
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unsigned int GetU32LE (const unsigned int& nPos, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( m_nLen < 4 || nPos > (m_nLen - 4) )
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{
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*pbSuccess = false;
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return 0;
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}
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unsigned int nRes = m_sFile[nPos + 3];
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nRes = (nRes << 8) + m_sFile[nPos + 2];
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nRes = (nRes << 8) + m_sFile[nPos + 1];
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nRes = (nRes << 8) + m_sFile[nPos + 0];
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return nRes;
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}
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unsigned int GetUVarBE(const unsigned int& nPos, const unsigned int& nSize, bool *pbSuccess)
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{
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//*pbSuccess = true;
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if ( m_nLen < nSize || nPos > (m_nLen - nSize) )
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{
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*pbSuccess = false;
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return 0;
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}
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unsigned int nRes = 0;
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for ( int nIndex = 0; nIndex < nSize; ++nIndex )
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nRes = (nRes << 8) + m_sFile[nPos + nIndex];
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return nRes;
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}
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bool CheckRegion(const unsigned int& nPos, const unsigned int& nSize)
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{
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return (m_nLen >= nSize && nPos <= (m_nLen - nSize));
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}
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int ReadS8 (bool *pbSuccess)
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{
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return GetS8( m_nPos++, pbSuccess );
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}
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int ReadU8 (bool *pbSuccess)
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{
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return GetU8( m_nPos++, pbSuccess );
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}
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unsigned int ReadU32BE(bool *pbSuccess)
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{
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unsigned int unResult = GetU32BE( m_nPos, pbSuccess );
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m_nPos += 4;
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return unResult;
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}
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unsigned int ReadU32LE(bool *pbSuccess)
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{
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unsigned int unResult = GetU32LE( m_nPos, pbSuccess );
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m_nPos += 4;
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return unResult;
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}
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int Read(void* pDestBuffer, unsigned int nSize)
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{
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if (m_nPos >= m_nLen)
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nSize = 0;
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else if (nSize > (m_nLen - m_nPos))
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nSize = m_nLen - m_nPos;
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if (0 == nSize)
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return nSize;
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memcpy( pDestBuffer, (m_sFile + m_nPos), nSize );
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m_nPos += nSize;
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return nSize;
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}
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protected:
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unsigned char *m_sFileData;
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unsigned char *m_sFile;
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unsigned int m_nLen;
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unsigned int m_nPos;
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bool m_bFreeFileData;
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};
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}
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#endif /* _ASC_FONTCONVERTER_FONT_FILE_BASE_H */
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