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86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
#pragma once
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#include <chrono>
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#include <memory>
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#include <string>
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namespace scwx::awips
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{
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class WmoHeaderImpl;
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/**
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* @brief The WMO Header is defined in WMO Manual No. 386, with additional codes
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* defined in WMO Codes Manual 306. The NWS summarizes the relevant
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* information.
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*
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* <https://www.roc.noaa.gov/WSR88D/Level_III/Level3Info.aspx>
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* <https://www.weather.gov/tg/head>
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* <https://www.weather.gov/tg/headef>
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* <https://www.weather.gov/tg/bbb>
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* <https://www.weather.gov/tg/awips>
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*/
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class WmoHeader
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{
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public:
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explicit WmoHeader();
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~WmoHeader();
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WmoHeader(const WmoHeader&) = delete;
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WmoHeader& operator=(const WmoHeader&) = delete;
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WmoHeader(WmoHeader&&) noexcept;
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WmoHeader& operator=(WmoHeader&&) noexcept;
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bool operator==(const WmoHeader& o) const;
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std::string sequence_number() const;
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std::string data_type() const;
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std::string geographic_designator() const;
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std::string bulletin_id() const;
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std::string icao() const;
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std::string date_time() const;
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std::string bbb_indicator() const;
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std::string product_category() const;
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std::string product_designator() const;
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/**
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* @brief Get the WMO date/time
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*
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* Gets the WMO date/time. Uses the optional date hint provided via
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* SetDateHint(std::chrono::year_month). If the date hint has not been
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* provided, the endTimeHint parameter is required.
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*
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* @param [in] endTimeHint The optional end time bounds to provide. This is
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* ignored if a date hint has been provided to determine an absolute date.
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*/
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std::chrono::sys_time<std::chrono::minutes> GetDateTime(
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std::optional<std::chrono::system_clock::time_point> endTimeHint =
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std::nullopt);
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/**
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* @brief Parse a WMO header
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*
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* @param [in] is The input stream to parse
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*/
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bool Parse(std::istream& is);
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/**
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* @brief Provide a date hint for the WMO parser
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*
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* The WMO header contains a date/time in the format DDMMSS. The year and
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* month must be derived using another source. The date hint provides the
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* additional context required to determine the absolute product time.
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*
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* This function will update any absolute date/time already calculated, or
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* affect the calculation of a subsequent absolute date/time.
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*
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* @param [in] dateHint The date hint to provide the WMO header parser
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*/
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void SetDateHint(std::chrono::year_month dateHint);
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private:
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std::unique_ptr<WmoHeaderImpl> p;
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};
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} // namespace scwx::awips
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