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Adding robust date calculation to WMO header

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This commit is contained in:
Dan Paulat 2025-02-17 23:39:52 -06:00
parent c00016cb69
commit 7e9895e002
3 changed files with 178 additions and 72 deletions
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36
wxdata/include/scwx/awips/wmo_header.hpp
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@ -1,5 +1,6 @@
#pragma once
#include <chrono>
#include <memory>
#include <string>
@ -27,7 +28,7 @@ public:
explicit WmoHeader();
~WmoHeader();
WmoHeader(const WmoHeader&) = delete;
WmoHeader(const WmoHeader&) = delete;
WmoHeader& operator=(const WmoHeader&) = delete;
WmoHeader(WmoHeader&&) noexcept;
@ -45,8 +46,41 @@ public:
std::string product_category() const;
std::string product_designator() const;
/**
* @brief Get the WMO date/time
*
* Gets the WMO date/time. Uses the optional date hint provided via
* SetDateHint(std::chrono::year_month). If the date hint has not been
* provided, the endTimeHint parameter is required.
*
* @param [in] endTimeHint The optional end time bounds to provide. This is
* ignored if a date hint has been provided to determine an absolute date.
*/
std::chrono::sys_time<std::chrono::minutes> GetDateTime(
std::optional<std::chrono::system_clock::time_point> endTimeHint =
std::nullopt);
/**
* @brief Parse a WMO header
*
* @param [in] is The input stream to parse
*/
bool Parse(std::istream& is);
/**
* @brief Provide a date hint for the WMO parser
*
* The WMO header contains a date/time in the format DDMMSS. The year and
* month must be derived using another source. The date hint provides the
* additional context required to determine the absolute product time.
*
* This function will update any absolute date/time already calculated, or
* affect the calculation of a subsequent absolute date/time.
*
* @param [in] dateHint The date hint to provide the WMO header parser
*/
void SetDateHint(std::chrono::year_month dateHint);
private:
std::unique_ptr<WmoHeaderImpl> p;
};