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#include <mbgl/util/http_header.hpp>
#include <mbgl/util/string.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
namespace mbgl {
namespace http {
CacheControl CacheControl::parse(const std::string& value) {
namespace qi = boost::spirit::qi;
namespace phoenix = boost::phoenix;
CacheControl result;
qi::phrase_parse(value.begin(), value.end(), (
(qi::lit("must-revalidate") [ phoenix::ref(result.mustRevalidate) = true ]) |
(qi::lit("max-age") >> '=' >> qi::ulong_long [ phoenix::ref(result.maxAge) = qi::_1 ]) |
(*(('"' >> *(('\\' >> qi::char_) | (qi::char_ - '"')) >> '"') | (qi::char_ - '"' - ',')))
) % ',', qi::ascii::space);
return result;
}
optional<Timestamp> CacheControl::toTimePoint() const {
return maxAge ? util::now() + Seconds(*maxAge) : optional<Timestamp>{};
}
optional<Timestamp> parseRetryHeaders(const optional<std::string>& retryAfter,
const optional<std::string>& xRateLimitReset) {
if (retryAfter) {
try {
auto secs = std::chrono::seconds(std::stoi(*retryAfter));
return std::chrono::time_point_cast<Seconds>(std::chrono::system_clock::now() + secs);
} catch (...) {
return util::parseTimestamp((*retryAfter).c_str());
}
} else if (xRateLimitReset) {
try {
return util::parseTimestamp(std::stoi(*xRateLimitReset));
} catch (...) {
return {};
}
}
return {};
}
} // namespace http
} // namespace mbgl
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