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/*
* This source code is released into the public domain.
*/
module;
#include <algorithm>
#include <locale>
#include <ranges>
#include <string>
#include <utility>
export module nihil.util:next_word;
import :skipws;
namespace nihil {
/*
* Return the next word from a string_view. Skips leading whitespace, so
* calling this repeatedly will return each word from the string.
*/
export template<typename Char> [[nodiscard]]
auto next_word(std::basic_string_view<Char> text,
std::locale const &locale = std::locale())
-> std::pair<std::basic_string_view<Char>,
std::basic_string_view<Char>>
{
text = skipws(text, locale);
auto is_space = ctype_is(std::ctype_base::space, locale);
auto split_pos = std::ranges::find_if(text, is_space);
return {{std::ranges::begin(text), split_pos},
{split_pos, std::ranges::end(text)}};
}
export template<typename Char>
auto next_word(std::basic_string_view<Char> *text,
std::locale const &locale = std::locale())
-> std::basic_string_view<Char>
{
auto [word, rest] = next_word(*text, locale);
*text = rest;
return word;
}
} // namespace nihil
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