Function parse_defaults

docopt.cpp:526–546

}

std::vector<Option> parse_defaults(std::string const& doc) {
	// This pattern is a delimiter by which we split the options.
	// The delimiter is a new line followed by a whitespace(s) followed by one or two hyphens.
	static std::regex const re_delimiter{
		"(?:^|\\n)[ \\t]*"  // a new line with leading whitespace
		"(?=-{1,2})"        // [split happens here] (positive lookahead) ... and followed by one or two hyphes
	};

	std::vector<Option> defaults;
	for (auto s : parse_section("options:", doc)) {
		s.erase(s.begin(), s.begin() + static_cast<std::ptrdiff_t>(s.find(':')) + 1); // get rid of "options:"

		for (const auto& opt : regex_split(s, re_delimiter)) {
			if (starts_with(opt, "-")) {
				defaults.emplace_back(Option::parse(opt));
			}
		}
	}

	return defaults;
}

static bool isOptionSet(PatternList const& options, std::string const& opt1, std::string const& opt2 = "") {
	return std::any_of(options.begin(), options.end(), [&](std::shared_ptr<Pattern const> const& opt) -> bool {