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/*
RailControl - Model Railway Control Software
Copyright (c) 2017-2025 by Teddy / Dominik Mahrer - www.railcontrol.org
RailControl 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 3, or (at your option) any
later version.
RailControl 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 RailControl; see the file LICENCE. If not see
<http://www.gnu.org/licenses/>.
*/
#include <iomanip>
#include <sstream>
#include "Utils/Integer.h"
namespace Utils
{
int Integer::StringToInteger(const std::string& value, const int defaultValue)
{
size_t valueSize = value.length();
if (valueSize == 0)
{
return defaultValue;
}
char* end;
const char* start = value.c_str();
long longValue = std::strtol(start, &end, 10);
if (errno == ERANGE || start == end)
{
return defaultValue;
}
if (longValue > INT_MAX || longValue < INT_MIN)
{
return defaultValue;
}
return static_cast<int>(longValue);
}
int Integer::StringToInteger(const std::string& value, const int min, const int max)
{
int intValue = StringToInteger(value, min);
if (intValue < min)
{
return min;
}
if (intValue > max)
{
return max;
}
return intValue;
}
long Integer::HexToInteger(const std::string& value, const long defaultValue)
{
size_t valueSize = value.length();
if (valueSize == 0)
{
return defaultValue;
}
char* end;
const char* start = value.c_str();
long longValue = std::strtol(start, &end, 16);
if (errno == ERANGE || start == end)
{
return defaultValue;
}
return longValue;
}
signed char Integer::HexToChar(signed char c)
{
if (c >= 'a')
{
c -= 'a' - 10;
}
else if (c >= 'A')
{
c -= 'A' - 10;
}
else if (c >= '0')
{
c -= '0';
}
return c > 15 ? 0 : c;
}
void Integer::IntToDataBigEndian(const uint32_t i, unsigned char* buffer)
{
buffer[0] = (i >> 24);
buffer[1] = ((i >> 16) & 0xFF);
buffer[2] = ((i >> 8) & 0xFF);
buffer[3] = (i & 0xFF);
}
uint32_t Integer::DataBigEndianToInt(const unsigned char* buffer)
{
uint32_t i = buffer[0];
i <<= 8;
i |= buffer[1];
i <<= 8;
i |= buffer[2];
i <<= 8;
i |= buffer[3];
return i;
}
void Integer::ShortToDataBigEndian(const uint16_t i, unsigned char* buffer)
{
buffer[0] = (i >> 8);
buffer[1] = (i & 0xFF);
}
uint16_t Integer::DataBigEndianToShort(const unsigned char* buffer)
{
uint16_t i = buffer[0];
i <<= 8;
i |= buffer[1];
return i;
}
void Integer::IntToDataLittleEndian(const uint32_t i, unsigned char* buffer)
{
buffer[0] = (i & 0xFF);
buffer[1] = ((i >> 8) & 0xFF);
buffer[2] = ((i >> 16) & 0xFF);
buffer[3] = (i >> 24);
}
uint32_t Integer::DataLittleEndianToInt(const unsigned char* buffer)
{
return buffer[0]
+ (buffer[1] << 8)
+ (buffer[2] << 16)
+ (buffer[3] << 24);
}
void Integer::ShortToDataLittleEndian(const uint16_t i, unsigned char* buffer)
{
buffer[0] = (i & 0xFF);
buffer[1] = (i >> 8);
}
uint16_t Integer::DataLittleEndianToShort(const unsigned char* buffer)
{
return buffer[0]
+ (buffer[1] << 8);
}
std::string Integer::IntegerToBCD(const unsigned int input)
{
unsigned char zero = (input >> 4);
zero &= 0x0000000F;
zero += '0';
unsigned char one = input;
one &= 0x0000000F;
one += '0';
std::string output;
output.append(1, zero);
output.append(1, one);
return output;
}
std::string Integer::IntegerToHex(const unsigned int input, const unsigned int size)
{
if (input == 0)
{
return "0";
}
std::string output;
unsigned int decimal = input;
unsigned int internalSize = 0;
while (decimal)
{
std::stringstream part;
part << std::setfill('0') << std::setw(1) << std::hex << (decimal & 0xF);
output = part.str() + output;
decimal >>= 4;
++internalSize;
}
while (internalSize < size)
{
++internalSize;
output = "0" + output;
}
return output;
}
}
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