// This source code is released into the public domain.
export module nihil.util:skipws;

import :ctype;

namespace nihil {

// Remove leading whitespace from a string.
export template <typename Char>
[[nodiscard]]
auto skipws(std::basic_string_view<Char> text, std::locale const &locale = std::locale())
	-> std::basic_string_view<Char>
{
	auto is_space = ctype_is(std::ctype_base::space, locale);
	auto nonws = std::ranges::find_if_not(text, is_space);
	return {nonws, std::ranges::end(text)};
}

export template <typename Char>
auto skipws(std::basic_string_view<Char> *text, std::locale const &locale = std::locale()) -> void
{
	*text = skipws(*text, locale);
}

} // namespace nihil