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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2020 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2017-2019 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2016 Attila Molnar <attilamolnar@hush.com>
*
* This file is part of InspIRCd. InspIRCd 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, version 2.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#pragma once
/** Template function to convert any input type to std::string
*/
template<typename T> inline std::string ConvNumeric(const T& in)
{
if (in == 0)
return "0";
T quotient = in;
std::string out;
while (quotient)
{
out += "0123456789"[std::abs((long)quotient % 10)];
quotient /= 10;
}
if (in < 0)
out += '-';
std::reverse(out.begin(), out.end());
return out;
}
/** Template function to convert any input type to std::string
*/
inline std::string ConvToStr(const int in)
{
return ConvNumeric(in);
}
/** Template function to convert any input type to std::string
*/
inline std::string ConvToStr(const long in)
{
return ConvNumeric(in);
}
/** Template function to convert any input type to std::string
*/
inline std::string ConvToStr(const char* in)
{
return in;
}
/** Template function to convert any input type to std::string
*/
inline std::string ConvToStr(const bool in)
{
return (in ? "1" : "0");
}
/** Template function to convert any input type to std::string
*/
inline std::string ConvToStr(char in)
{
return std::string(1, in);
}
inline const std::string& ConvToStr(const std::string& in)
{
return in;
}
/** Template function to convert any input type to std::string
*/
template <class T> inline std::string ConvToStr(const T& in)
{
std::stringstream tmp;
if (!(tmp << in))
return std::string();
return tmp.str();
}
/** Template function to convert a std::string to any numeric type.
*/
template<typename TOut> inline TOut ConvToNum(const std::string& in)
{
TOut ret;
std::istringstream tmp(in);
if (!(tmp >> ret))
return 0;
return ret;
}
template<> inline char ConvToNum<char>(const std::string& in)
{
// We specialise ConvToNum for char to avoid istringstream treating
// the input as a character literal.
int16_t num = ConvToNum<int16_t>(in);
return num >= INT8_MIN && num <= INT8_MAX ? num : 0;
}
template<> inline unsigned char ConvToNum<unsigned char>(const std::string& in)
{
// We specialise ConvToNum for unsigned char to avoid istringstream
// treating the input as a character literal.
uint16_t num = ConvToNum<uint16_t>(in);
return num <= UINT8_MAX ? num : 0;
}
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