Class string

src/json-validator.cpp:739–882

};

class string : public schema
{
	std::pair<bool, size_t> maxLength_{false, 0};
	std::pair<bool, size_t> minLength_{false, 0};

#ifndef NO_STD_REGEX
	std::pair<bool, REGEX_NAMESPACE::regex> pattern_{false, REGEX_NAMESPACE::regex()};
	std::string patternString_;
#endif

	std::pair<bool, std::string> format_;
	std::tuple<bool, std::string, std::string> content_{false, "", ""};

	std::size_t utf8_length(const std::string &s) const
	{
		size_t len = 0;
		for (auto c : s)
			if ((c & 0xc0) != 0x80)
				len++;
		return len;
	}

	void validate(const json::json_pointer &ptr, const json &instance, json_patch &, error_handler &e) const override
	{
		if (minLength_.first) {
			if (utf8_length(instance.get<std::string>()) < minLength_.second) {
				std::ostringstream s;
				s << "instance is too short as per minLength:" << minLength_.second;
				e.error(ptr, instance, s.str());
			}
		}

		if (maxLength_.first) {
			if (utf8_length(instance.get<std::string>()) > maxLength_.second) {
				std::ostringstream s;
				s << "instance is too long as per maxLength: " << maxLength_.second;
				e.error(ptr, instance, s.str());
			}
		}

		if (std::get<0>(content_)) {
			if (root_->content_check() == nullptr)
				e.error(ptr, instance, std::string("a content checker was not provided but a contentEncoding or contentMediaType for this string have been present: '") + std::get<1>(content_) + "' '" + std::get<2>(content_) + "'");
			else {
				try {
					root_->content_check()(std::get<1>(content_), std::get<2>(content_), instance);
				} catch (const std::exception &ex) {
					e.error(ptr, instance, std::string("content-checking failed: ") + ex.what());
				}
			}
		} else if (instance.type() == json::value_t::binary) {
			e.error(ptr, instance, "expected string, but get binary data");
		}

		if (instance.type() != json::value_t::string) {
			return; // next checks only for strings
		}