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qTox/updater/serialize.cpp

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/*
Copyright © 2014 by The qTox Project
This file is part of qTox, a Qt-based graphical interface for Tox.
qTox is libre 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 3 of the License, or
(at your option) any later version.
qTox 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 qTox. If not, see <http://www.gnu.org/licenses/>
*/
#include "serialize.h"
QByteArray doubleToData(double num)
{
union
{
char tab[8];
double n;
} castUnion;
//char n[8];
//*((double*) n) = num;
castUnion.n=num;
return QByteArray(castUnion.tab,8);
}
QByteArray floatToData(float num)
{
union
{
char tab[4];
float n;
} castUnion;
castUnion.n=num;
return QByteArray(castUnion.tab,4);
}
float dataToFloat(QByteArray data)
{
union
{
char tab[4];
float n;
} castUnion;
castUnion.tab[0]=data.data()[0];
castUnion.tab[1]=data.data()[1];
castUnion.tab[2]=data.data()[2];
castUnion.tab[3]=data.data()[3];
return castUnion.n;
}
// Converts a string into PNet string data
QByteArray stringToData(QString str)
{
QByteArray data(4,0);
// Write the size in a Uint of variable lenght (8-32 bits)
int i=0;
uint num1 = (uint)str.toUtf8().size();
while (num1 >= 0x80)
{
data[i] = (unsigned char)(num1 | 0x80); i++;
num1 = num1 >> 7;
}
data[i]=num1;
data.resize(i+1);
data+=str.toUtf8();
return data;
}
QString dataToString(QByteArray data)
{
// Variable UInt32
unsigned char num3;
int num = 0;
int num2 = 0;
int i=0;
do
{
num3 = data[i]; i++;
num |= (num3 & 0x7f) << num2;
num2 += 7;
} while ((num3 & 0x80) != 0);
unsigned int strlen = (uint) num;
if (!strlen)
return QString();
data = data.right(data.size()-i); // Remove the strlen
data.truncate(strlen);
return QString(data);
}
float dataToRangedSingle(float min, float max, int numberOfBits, QByteArray data)
{
uint endvalue=0;
uint value=0;
if (numberOfBits <= 8)
{
endvalue = (uchar)data[0];
goto done;
}
value = (uchar)data[0];
numberOfBits -= 8;
if (numberOfBits <= 8)
{
endvalue = (value | ((uint) ((uchar)data[1]) << 8));
goto done;
}
value |= (uint) (((uchar)data[1]) << 8);
numberOfBits -= 8;
if (numberOfBits <= 8)
{
uint num2 = (uint) (((uchar)data[2]) << 0x10);
endvalue = (value | num2);
goto done;
}
value |= (uint) (((uchar)data[2]) << 0x10);
numberOfBits -= 8;
endvalue = (value | ((uint) (((uchar)data[3]) << 0x18)));
goto done;
done:
float num = max - min;
int num2 = (((int) 1) << numberOfBits) - 1;
float num3 = endvalue;
float num4 = num3 / ((float) num2);
return (min + (num4 * num));
}
QByteArray rangedSingleToData(float value, float min, float max, int numberOfBits)
{
QByteArray data;
float num = max - min;
float num2 = (value - min) / num;
int num3 = (((int) 1) << numberOfBits) - 1;
uint source = num3 * num2;
if (numberOfBits <= 8)
{
data += (unsigned char)source;
return data;
}
data += (unsigned char)source;
numberOfBits -= 8;
if (numberOfBits <= 8)
{
data += (unsigned char)source>>8;
return data;
}
data += (unsigned char)source>>8;
numberOfBits -= 8;
if (numberOfBits <= 8)
{
data += (unsigned char)source>>16;
return data;
}
data += (unsigned char)source>>16;
data += (unsigned char)source>>24;
return data;
}
uint8_t dataToUint8(QByteArray data)
{
return (uint8_t)data[0];
}
uint16_t dataToUint16(QByteArray data)
{
return ((uint16_t)(uint8_t)data[0])
+(((uint16_t)(uint8_t)data[1])<<8);
}
uint32_t dataToUint32(QByteArray data)
{
return ((uint32_t)(uint8_t)data[0])
+(((uint32_t)(uint8_t)data[1])<<8)
+(((uint32_t)(uint8_t)data[2])<<16)
+(((uint32_t)(uint8_t)data[3])<<24);
}
uint64_t dataToUint64(QByteArray data)
{
return ((uint64_t)(uint8_t)data[0])
+(((uint64_t)(uint8_t)data[1])<<8)
+(((uint64_t)(uint8_t)data[2])<<16)
+(((uint64_t)(uint8_t)data[3])<<24)
+(((uint64_t)(uint8_t)data[4])<<32)
+(((uint64_t)(uint8_t)data[5])<<40)
+(((uint64_t)(uint8_t)data[6])<<48)
+(((uint64_t)(uint8_t)data[7])<<56);
}
unsigned getVUint32Size(QByteArray data)
{
unsigned lensize=0;
{
unsigned char num3;
do {
num3 = data[lensize];
lensize++;
} while ((num3 & 0x80) != 0);
}
return lensize;
}
QByteArray uint8ToData(uint8_t num)
{
QByteArray data(1,0);
data[0] = (uint8_t)num;
return data;
}
QByteArray uint16ToData(uint16_t num)
{
QByteArray data(2,0);
data[0] = (uint8_t)(num & 0xFF);
data[1] = (uint8_t)((num>>8) & 0xFF);
return data;
}
QByteArray uint32ToData(uint32_t num)
{
QByteArray data(4,0);
data[0] = (uint8_t)(num & 0xFF);
data[1] = (uint8_t)((num>>8) & 0xFF);
data[2] = (uint8_t)((num>>16) & 0xFF);
data[3] = (uint8_t)((num>>24) & 0xFF);
return data;
}
QByteArray uint64ToData(uint64_t num)
{
QByteArray data(8,0);
data[0] = (uint8_t)(num & 0xFF);
data[1] = (uint8_t)((num>>8) & 0xFF);
data[2] = (uint8_t)((num>>16) & 0xFF);
data[3] = (uint8_t)((num>>24) & 0xFF);
data[4] = (uint8_t)((num>>32) & 0xFF);
data[5] = (uint8_t)((num>>40) & 0xFF);
data[6] = (uint8_t)((num>>48) & 0xFF);
data[7] = (uint8_t)((num>>56) & 0xFF);
return data;
}