celestia/src/celutil/stringutils.h

39 lines
1.1 KiB
C++

// stringutils.h
//
// Copyright (C) 2001-present, the Celestia Development Team
// Original version by Chris Laurel <claurel@shatters.net>
//
// Miscellaneous useful functions.
//
// This program 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 2
// of the License, or (at your option) any later version.
#pragma once
#include <string_view>
#include <celcompat/charconv.h>
int compareIgnoringCase(std::string_view s1, std::string_view s2);
int compareIgnoringCase(std::string_view s1, std::string_view s2, int n);
struct CompareIgnoringCasePredicate
{
bool operator()(std::string_view, std::string_view) const;
};
template <typename T>
[[nodiscard]] bool to_number(std::string_view p, T &result)
{
auto r = celestia::compat::from_chars(p.data(), p.data() + p.size(), result);
return r.ec == std::errc();
}
template <typename T>
[[nodiscard]] bool to_number(std::string_view p, T &result, int base)
{
auto r = celestia::compat::from_chars(p.data(), p.data() + p.size(), result, base);
return r.ec == std::errc();
}