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/*
*
* (C) 2003-2025 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
#pragma once
#include <optional>
namespace Anope
{
/** Attempts to convert a string to any type.
* @param in The value to convert.
* @param leftover If non-nullptr then the location to store leftover data.
*/
template<typename T>
inline std::optional<T> TryConvert(const Anope::string &in, Anope::string *leftover = nullptr)
{
std::istringstream tmp(in.str());
T out;
if (!(tmp >> out))
return std::nullopt;
if (leftover)
{
leftover->clear();
std::getline(tmp, leftover->str());
}
else
{
char extra;
if (tmp >> extra)
return std::nullopt;
}
return out;
}
/** Converts a string to any type.
* @param in The value to convert.
* @param def The default to use if the conversion failed.
* @param leftover If non-nullptr then the location to store leftover data.
*/
template<typename T>
inline T Convert(const Anope::string &in, T def, Anope::string *leftover = nullptr)
{
return TryConvert<T>(in, leftover).value_or(def);
}
/** Attempts to convert any type to a string.
* @param in The value to convert.
*/
template <class T>
inline std::optional<Anope::string> TryString(const T &in)
{
std::ostringstream tmp;
if (!(tmp << in))
return std::nullopt;
return tmp.str();
}
/** No-op function that returns the string that was passed to it.
* @param in The string to return.
*/
inline const string &ToString(const string &in)
{
return in;
}
/** Converts a std::string to a string.
* @param in The value to convert.
*/
inline string ToString(const std::string &in)
{
return in;
}
/** Converts a char array to a string.
* @param in The value to convert.
*/
inline string ToString(const char *in)
{
return string(in);
}
/** Converts a char to a string.
* @param in The value to convert.
*/
inline string ToString(char in)
{
return string(1, static_cast<string::value_type>(in));
}
/** Converts an unsigned char to a string.
* @param in The value to convert.
*/
inline string ToString(unsigned char in)
{
return string(1, static_cast<string::value_type>(in));
}
/** Converts a bool to a string.
* @param in The value to convert.
*/
inline string ToString(bool in)
{
return (in ? "1" : "0");
}
/** Converts a type that std::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>, string> ToString(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>, string> ToString(const T &in)
{
return TryString(in).value_or(Anope::string());
}
}
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