Function next_keyword_if_it_exists

src/geode/basic/file.cpp:112–124

    }

    std::optional< std::string > next_keyword_if_it_exists(
        std::ifstream& file, std::string_view word )
    {
        std::optional< std::string > line{ std::in_place };
        const auto previous_position = file.tellg();
        std::getline( file, line.value() );
        if( string_starts_with( line.value(), word ) )
        {
            return line;
        }
        file.seekg( previous_position );
        return std::nullopt;
    }
} // namespace geode