Yajbir Singh
276 lines
8.5 KiB
C++
276 lines
8.5 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_FONT_CONVERTER_UTILS_H_
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#define _ASC_FONT_CONVERTER_UTILS_H_
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// FreeType
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#include <stdint.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_TRUETYPE_TABLES_H
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#include "MemoryUtils.h"
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#include <string>
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namespace NSFontConverter
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{
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struct TCharBuffer
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{
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char *sBuffer; // Буфер
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int nSize; // Реальный размер буфера
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int nLen; // Фактический размер буфера (т.е. размер используемой части буфера)
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TCharBuffer(int _initsize = 32)
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{
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nSize = _initsize;
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nLen = 0;
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sBuffer = (char*)MemUtilsMalloc( nSize );
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memset( sBuffer, 0x00, nSize );
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}
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~TCharBuffer()
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{
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if ( sBuffer )
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MemUtilsFree( sBuffer );
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}
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void Write(char nChar)
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{
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if ( nLen + 1 >= nSize )
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{
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nSize *= 2;
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sBuffer = (char*)MemUtilsRealloc( (void*)sBuffer, nSize );
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memset( sBuffer + nLen, 0x00, nSize - nLen );
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}
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sBuffer[nLen++] = nChar;
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}
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void Write(const char *sString, int nStringLen = -1)
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{
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if ( nStringLen < 0 )
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nStringLen = strlen( sString );
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while ( nStringLen + nLen >= nSize )
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{
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nSize *= 2;
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sBuffer = (char*)MemUtilsRealloc( (void*)sBuffer, nSize );
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memset( sBuffer + nLen, 0x00, nSize - nLen );
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}
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memcpy( sBuffer + nLen, sString, nStringLen );
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nLen += nStringLen;
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}
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void Write(unsigned char unChar)
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{
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Write( (char)unChar );
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}
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void Write16(int nValue)
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{
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Write( (unsigned char)( (nValue >> 8) & 0xFF ) );
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Write( (unsigned char)( nValue & 0xFF ) );
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}
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void Write32(int nValue)
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{
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Write( (unsigned char)( (nValue >> 24) & 0xFF ) );
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Write( (unsigned char)( (nValue >> 16) & 0xFF ) );
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Write( (unsigned char)( (nValue >> 8) & 0xFF ) );
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Write( (unsigned char)( nValue & 0xFF ) );
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}
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};
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static void CharBufferWrite(void *pBuffer, const char *sData, int nLen)
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{
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TCharBuffer *pCharBuffer = (TCharBuffer*)pBuffer;
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pCharBuffer->Write( sData, nLen );
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}
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static void FileWrite(void* pFile, const char *sData, int nLen)
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{
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::fwrite( sData, 1, nLen, (FILE*)pFile );
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::fflush( (FILE*)pFile );
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}
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namespace Utils
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{
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inline static int GetDigit (wchar_t c)
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{
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if (c >= '0' && c <= '9')
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return (int)(c - '0');
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if (c >= 'a' && c <= 'f')
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return 10 + (int)(c - 'a');
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if (c >= 'A' && c <= 'F')
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return 10 + (int)(c - 'A');
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return 0;
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}
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inline static bool IsDigit (wchar_t c)
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{
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if (c >= '0' && c <= '9')
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return true;
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return false;
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}
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inline static int64_t GetHex (const std::wstring& string)
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{
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int64_t nResult = 0;
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int nLen = (int)string.length();
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const wchar_t* buf = string.c_str();
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for ( int nIndex = 0; nIndex < nLen; ++nIndex )
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{
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nResult += GetDigit( buf[nIndex] ) << ( 4 * ( nLen - 1 - nIndex ) );
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}
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return nResult;
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}
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inline static int GetInteger (const std::wstring& string)
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{
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return std::stoi(string);
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}
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inline static int GetInteger (const char* string)
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{
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return atoi(string);
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}
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inline static double GetDouble (const std::wstring& string)
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{
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return std::stod(string);
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}
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inline static double GetDouble (const char* string)
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{
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double d = 0;
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sscanf(string, "%lf", &d);
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return d;
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}
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}
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// Функция взята из Graphics.dll
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static int SetCMapForCharCode(FT_Face pFace, long lUnicode, int *pnCMapIndex)
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{
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*pnCMapIndex = -1;
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if ( 0 == pFace->num_charmaps )
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return lUnicode;
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int nCharIndex = 0;
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if ( !pFace )
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return nCharIndex;
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for ( int nIndex = 0; nIndex < pFace->num_charmaps; nIndex++ )
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{
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FT_CharMap pCharMap = pFace->charmaps[nIndex];
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if ( FT_Set_Charmap( pFace, pCharMap ) )
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continue;
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FT_Encoding pEncoding = pCharMap->encoding;
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if ( FT_ENCODING_UNICODE == pEncoding )
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{
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if ( nCharIndex = FT_Get_Char_Index( pFace, lUnicode ) )
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{
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*pnCMapIndex = nIndex;
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return nCharIndex;
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}
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}
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else if ( FT_ENCODING_NONE == pEncoding || FT_ENCODING_MS_SYMBOL == pEncoding || FT_ENCODING_APPLE_ROMAN == pEncoding )
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{
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FT_ULong charcode;
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FT_UInt gindex;
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charcode = FT_Get_First_Char( pFace, &gindex );
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while ( gindex != 0 )
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{
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charcode = FT_Get_Next_Char( pFace, charcode, &gindex );
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if ( charcode == lUnicode )
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{
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nCharIndex = gindex;
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*pnCMapIndex = nIndex;
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break;
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}
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}
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if ( nCharIndex = FT_Get_Char_Index( pFace, lUnicode ) )
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{
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*pnCMapIndex = nIndex;
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}
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}
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//else if ( FT_ENCODING_ADOBE_STANDARD == pEncoding )
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//{
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// if ( nCharIndex = FT_Get_Char_Index( pFace, lUnicode ) )
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// return nCharIndex;
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//}
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//else if ( FT_ENCODING_ADOBE_CUSTOM == pEncoding )
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//{
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// if ( nCharIndex = FT_Get_Char_Index( pFace, lUnicode ) )
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// return nCharIndex;
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//}
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//else if ( FT_ENCODING_ADOBE_EXPERT == pEncoding )
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//{
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// if ( nCharIndex = FT_Get_Char_Index( pFace, lUnicode ) )
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// return nCharIndex;
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//}
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}
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return nCharIndex;
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}
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static int GetSymbolicCmapIndex(FT_Face pFace)
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{
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TT_OS2 *pOs2 = (TT_OS2 *)FT_Get_Sfnt_Table( pFace, ft_sfnt_os2 );
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if ( NULL == pOs2 || 0xFFFF == pOs2->version )
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return -1;
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// Проверяем установлен ли 31 бит
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if ( !( pOs2->ulCodePageRange1 & 0x80000000 ) && !( pOs2->ulCodePageRange1 == 0 && pOs2->ulCodePageRange2 == 0 ) )
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return -1;
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for( int nIndex = 0; nIndex < pFace->num_charmaps; nIndex++ )
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{
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// Symbol
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if ( 0 == pFace->charmaps[nIndex]->encoding_id && 3 == pFace->charmaps[nIndex]->platform_id )
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return nIndex;
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}
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return -1;
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}
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}
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#endif // _ASC_FONT_CONVERTER_UTILS_H_
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