mirror of
https://github.com/inspircd/inspircd.git
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136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
/*
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* InspIRCd -- Internet Relay Chat Daemon
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*
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* Copyright (C) 2019, 2021, 2023-2024 Sadie Powell <sadie@witchery.services>
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* Copyright (C) 2016 Attila Molnar <attilamolnar@hush.com>
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*
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* This file is part of InspIRCd. InspIRCd is free software: you can
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* redistribute it and/or modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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/** No-op function that returns the string that was passed to it.
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* @param in The string to return.
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*/
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inline const std::string& ConvToStr(const std::string& in)
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{
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return in;
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}
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/** Converts a string_view to a string.
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* @param in The value to convert.
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*/
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inline std::string ConvToStr(const std::string_view& in)
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{
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return std::string(in);
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}
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/** Converts a char array to a string.
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* @param in The value to convert.
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*/
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inline std::string ConvToStr(const char* in)
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{
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return std::string(in);
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}
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/** Converts a char to a string.
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* @param in The value to convert.
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*/
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inline std::string ConvToStr(char in)
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{
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return std::string(1, static_cast<std::string::value_type>(in));
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}
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/** Converts an unsigned char to a string.
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* @param in The value to convert.
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*/
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inline std::string ConvToStr(unsigned char in)
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{
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return std::string(1, static_cast<std::string::value_type>(in));
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}
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/** Converts a bool to a string.
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* @param in The value to convert.
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*/
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inline std::string ConvToStr(const bool in)
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{
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return (in ? "1" : "0");
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}
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/** Converts a type that to_string is implemented for to a string.
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* @param in The value to convert.
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*/
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template<typename Stringable>
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inline std::enable_if_t<std::is_arithmetic_v<Stringable>, std::string> ConvToStr(const Stringable& in)
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{
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return std::to_string(in);
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}
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/** Converts a type that fmtlib can format to a string.
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* @param in The value to convert.
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*/
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template<typename Formattable>
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inline std::enable_if_t<!std::is_arithmetic_v<Formattable> && fmt::is_formattable<Formattable>::value, std::string> ConvToStr(const Formattable& in)
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{
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return INSP_FORMAT("{}", in);
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}
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/** Converts any type to a string.
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* @param in The value to convert.
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*/
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template <class T>
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inline std::enable_if_t<!std::is_arithmetic_v<T> && !fmt::is_formattable<T>::value, std::string> ConvToStr(const T& in)
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{
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std::stringstream tmp;
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if (!(tmp << in))
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return std::string();
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return tmp.str();
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}
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/** Converts a string to a numeric type.
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* @param in The string to convert to a numeric type.
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* @param def The value to return if the string could not be converted (defaults to 0)
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*/
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template<typename Numeric>
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inline Numeric ConvToNum(const std::string& in, Numeric def = 0)
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{
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Numeric ret;
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std::istringstream tmp(in);
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if (!(tmp >> ret))
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return def;
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return ret;
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}
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/** Specialisation of ConvToNum so istringstream doesn't try to extract a text character.
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* @param in The string to convert to a numeric type.
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* @param def The value to return if the string could not be converted (defaults to 0)
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*/
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template<>
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inline char ConvToNum<char>(const std::string& in, char def)
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{
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int16_t num = ConvToNum<int16_t>(in, def);
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return num >= INT8_MIN && num <= INT8_MAX ? static_cast<char>(num) : def;
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}
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/** Specialisation of ConvToNum so istringstream doesn't try to extract a text character.
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* @param in The string to convert to a numeric type.
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* @param def The value to return if the string could not be converted (defaults to 0)
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*/
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template<>
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inline unsigned char ConvToNum<unsigned char>(const std::string& in, unsigned char def)
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{
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uint16_t num = ConvToNum<uint16_t>(in, def);
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return num <= UINT8_MAX ? static_cast<unsigned char>(num) : def;
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}
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