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