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103 lines
2.4 KiB
103 lines
2.4 KiB
/*
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* Copyright (C) 2015-2022 Département de l'Instruction Publique (DIP-SEM)
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*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ASCIIHexDecode.h"
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#include <QtGlobal>
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#include <string>
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#include "Utils.h"
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#include "core/memcheck.h"
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using namespace merge_lib;
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const std::string WHITESPACES(" \t\f\v\n\r");
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#define HEX_TO_VAL(char_c) (char_c)>9?'A'+(char_c)-10:'0'+(char_c);
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static unsigned int convertHexVal(unsigned char c)
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{
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if(c >= '0' && c <= '9')
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{
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return (c - '0');
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}
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if(c >= 'A' && c <= 'F')
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{
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return (c - 'A' + 10);
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}
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if(c >= 'a' && c <= 'f')
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{
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return (c - 'a' + 10);
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}
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return 0;
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}
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bool ASCIIHexDecode::encode(std::string & decoded)
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{
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Q_UNUSED(decoded);
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return false;
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}
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bool ASCIIHexDecode::decode(std::string & encoded)
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{
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bool isLow = true;
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unsigned char decodedChar = '\0';
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int len = encoded.size();
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std::string decoded ="";
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for(int i = 0;i<len;i++)
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{
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unsigned char ch = encoded[i];
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if((int) WHITESPACES.find(ch) != -1 )
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{
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continue;
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}
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if( ch == '>' )
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{
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continue; // EOD found
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}
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ch = convertHexVal(ch);
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if( isLow )
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{
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decodedChar = (ch & 0x0F);
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isLow = false;
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}
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else
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{
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decodedChar = ((decodedChar << 4) | ch);
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isLow = true;
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decoded += decodedChar;
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}
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}
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encoded = decoded;
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return true;
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}
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void ASCIIHexDecode::initialize(Object * objectWithStram)
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{
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Q_UNUSED(objectWithStram);
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}
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