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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* 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
/** No-op function that returns the string that was passed to it.
* @param in The string to return.
*/
inline const std::string& ConvToStr(const std::string& in)
{
return in;
}
/** Converts a string_view to a string.
* @param in The value to convert.
*/
inline std::string ConvToStr(const std::string_view& in)
{
return std::string(in);
}
/** Converts a char array to a string.
* @param in The value to convert.
*/
inline std::string ConvToStr(const char* in)
{
return std::string(in);
}
/** Converts a char to a string.
* @param in The value to convert.
*/
inline std::string ConvToStr(char in)
{
return std::string(1, in);
}
/** Converts an unsigned char to a string.
* @param in The value to convert.
*/
inline std::string ConvToStr(unsigned char in)
{
return std::string(1, in);
}
/** Converts a bool to a string.
* @param in The value to convert.
*/
inline std::string ConvToStr(const bool in)
{
return (in ? "1" : "0");
}
/** Converts a type that to_string is implemented for to a string.
* @param in The value to convert.
*/
template<typename Stringable>
inline std::enable_if_t<std::is_arithmetic_v<Stringable>, std::string> ConvToStr(const Stringable& in)
{
return std::to_string(in);
}
/** Converts any type to a string.
* @param in The value to convert.
*/
template <class T>
inline std::enable_if_t<!std::is_arithmetic_v<T>, std::string> ConvToStr(const T& in)
{
std::stringstream tmp;
if (!(tmp << in))
return std::string();
return tmp.str();
}
/** Converts a string to a numeric type.
* @param in The string to convert to a numeric type.
* @param def The value to return if the string could not be converted (defaults to 0)
*/
template<typename Numeric>
inline Numeric ConvToNum(const std::string& in, Numeric def = 0)
{
Numeric ret;
std::istringstream tmp(in);
if (!(tmp >> ret))
return def;
return ret;
}
/** Specialisation of ConvToNum so istringstream doesn't try to extract a text character.
* @param in The string to convert to a numeric type.
* @param def The value to return if the string could not be converted (defaults to 0)
*/
template<>
inline char ConvToNum<char>(const std::string& in, char def)
{
int16_t num = ConvToNum<int16_t>(in);
return num >= INT8_MIN && num <= INT8_MAX ? static_cast<char>(num) : def;
}
/** Specialisation of ConvToNum so istringstream doesn't try to extract a text character.
* @param in The string to convert to a numeric type.
* @param def The value to return if the string could not be converted (defaults to 0)
*/
template<>
inline unsigned char ConvToNum<unsigned char>(const std::string& in, unsigned char def)
{
uint16_t num = ConvToNum<uint16_t>(in);
return num <= UINT8_MAX ? static_cast<unsigned char>(num) : def;
}
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