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/***************************************************************************

 *   Copyright (C) 2008 by Manuel Schrape                                  *

 *   manuel.schrape@gmx.de                                                 *

 *                                                                         *

 *   This program is free software; you can redistribute it and/or modify  *

 *   it under the terms of the GNU General Public License as published by  *

 *   the Free Software Foundation; either version 2 of the License.        *

 *                                                                         *

 *   This program is distributed in the hope that it will be useful,       *

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *

 *   GNU General Public License for more details.                          *

 *                                                                         *

 *   You should have received a copy of the GNU General Public License     *

 *   along with this program; if not, write to the                         *

 *   Free Software Foundation, Inc.,                                       *

 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *

 ***************************************************************************/

#include "ToolBox.h"

ToolBox::ToolBox()

{

}

bool ToolBox::Decode64(sRxData &RX, bool Long)

{

    unsigned char a,b,c,d;

    unsigned char ptr = 0;

    unsigned char x,y,z;

    int ptrOut[150];

    int ptrIn = 3;

    int max = RX.String.length();

    int len = RX.String.length();

    int DecLen = 0;

    if (RX.Input[ptrIn] == 0)

    {

        qDebug("QString to Char ERROR...!!!!");

        return false;

    }

    while(len != 0)

    {

        a = RX.Input[ptrIn++] - '=';

        b = RX.Input[ptrIn++] - '=';

        c = RX.Input[ptrIn++] - '=';

        d = RX.Input[ptrIn++] - '=';

        if(ptrIn > max - 2) break; // nicht mehr Daten verarbeiten, als empfangen wurden

        x = (a << 2) | (b >> 4);

        y = ((b & 0x0f) << 4) | (c >> 2);

        z = ((c & 0x03) << 6) | d;

        if(len--) ptrOut[ptr++] = x; else break;

        if(len--) ptrOut[ptr++] = y; else break;

        if(len--) ptrOut[ptr++] = z; else break;

    }

    for (int a=0; a<ptr; a++)

    {

        if (Long == false)

        {

            int b1, b2, b3;

            b1 = ptrOut[a++];

            b2 = ptrOut[a];

            b3 = (b2 << 8) | b1;

            if (b3 > 32767)

                b3 = b3 - 65536;

            RX.Decode[DecLen] = b3;

            DecLen++;

        }

        else

        {

            RX.Decode[DecLen] = ptrOut[a];

            DecLen++;

        }

    }

    return true;

}

int ToolBox::Data2Int(int *Data , int Start, bool is_signed)

{

    int Out = (Data[Start+1]<<8) | (Data[Start+0]);

    if ((Out > 32767) && (is_signed))

      Out = Out - 65536;

    return Out;

}

long ToolBox::Data2Long(int *Data , int Start, bool is_signed)

{

    long Out = (Data[Start+3]<<24) | (Data[Start+2]<<16) | (Data[Start+1]<<8) | (Data[Start+0]);

    return Out;

}

bool ToolBox::check_CRC(QString RXString)

{

    int CRC = 0;

    char *RX;

    int Length = RXString.length();

    RX = RXString.toLatin1().data();

    if (RX[1] == 127)

    {

        RX[1] = 0;

    }

    for(int i=0; i < Length-2; i++)

    {

            CRC+=RX[i];

    }

    CRC = CRC % 4096;

    if(RX[Length - 2] != ('=' + (CRC / 64)))

    {

        return false;

    }

    if(RX[Length - 1] != ('=' + CRC % 64))

    {

        return false;

    }

    return true;

}

QString ToolBox::add_CRC(QString TXString)

{

    unsigned int tmpCRC = 0;

    char *TXBuff;

    char CRC[2];

    TXBuff = TXString.toLatin1().data();

    for(int i = 0; i < TXString.length(); i++)

    {

        tmpCRC += TXBuff[i];

    }

    tmpCRC %= 4096;

    CRC[0] = '=' + tmpCRC / 64;

    CRC[1] = '=' + tmpCRC % 64;

    CRC[2] = '\0';

    QString Return = TXString + QString(CRC);

    return Return;

}

QString ToolBox::Encode64(char Data[150],unsigned int Length)

{

    unsigned int pt = 0;

    unsigned char a,b,c;

    unsigned char ptr = 0;

    char TX_Buff[150];

    while(Length > 0)

    {

        if(Length) { a = Data[ptr++]; Length--;} else a = 0;

        if(Length) { b = Data[ptr++]; Length--;} else b = 0;

        if(Length) { c = Data[ptr++]; Length--;} else c = 0;

        TX_Buff[pt++] = '=' + (a >> 2);

        TX_Buff[pt++] = '=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4));

        TX_Buff[pt++] = '=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6));

        TX_Buff[pt++] = '=' + ( c & 0x3f);

    }

    TX_Buff[pt] = 0;

    return QString(TX_Buff);

}

QString ToolBox::DataToString(int Data[150])

{

    char String[100];

    for (int a = 0; a < 100; a++)

    {

        String[a] = Data[a];

    }

    return QString(String).trimmed();

}