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Finish parsing Storm Position / Forecast page

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This commit is contained in:
Dan Paulat 2024-02-21 22:47:50 -06:00
parent 0415223571
commit 925f91995a
4 changed files with 127 additions and 9 deletions
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2
wxdata/include/scwx/util/strings.hpp
View file

@ -30,6 +30,8 @@ std::vector<std::string> ParseTokens(const std::string& s,
std::string ToString(const std::vector<std::string>& v);
std::optional<float> TryParseFloat(const std::string& str);
template<typename T>
std::optional<T> TryParseUnsignedLong(const std::string& str);

14
wxdata/include/scwx/wsr88d/rpg/storm_tracking_information_message.hpp
View file

@ -22,21 +22,21 @@ public:
{
struct Position
{
std::optional<units::angle::degrees<float>> azimuth_ {};
std::optional<units::length::nautical_miles<float>> range_ {};
std::optional<units::angle::degrees<std::uint16_t>> azimuth_ {};
std::optional<units::length::nautical_miles<std::uint16_t>> range_ {};
};
Position currentPosition_ {};
std::optional<units::angle::degrees<float>> direction_;
std::optional<units::velocity::knots<float>> speed_;
Position currentPosition_ {};
std::optional<units::angle::degrees<std::uint16_t>> direction_;
std::optional<units::velocity::knots<std::uint16_t>> speed_;
std::array<Position, 4> forecastPosition_ {};
std::optional<units::length::nautical_miles<float>> forecastError_ {};
std::optional<units::length::nautical_miles<float>> meanError_ {};
std::optional<std::int16_t> maxDbz_ {};
std::optional<units::length::feet<float>> maxDbzHeight_ {};
std::optional<std::int16_t> maxDbz_ {};
std::optional<units::length::feet<std::uint32_t>> maxDbzHeight_ {};
};
explicit StormTrackingInformationMessage();

15
wxdata/source/scwx/util/strings.cpp
View file

@ -88,6 +88,21 @@ std::string ToString(const std::vector<std::string>& v)
return value;
}
std::optional<float> TryParseFloat(const std::string& str)
{
std::optional<float> value = std::nullopt;
try
{
value = static_cast<float>(std::stof(str));
}
catch (const std::exception&)
{
}
return value;
}
template<typename T>
std::optional<T> TryParseUnsignedLong(const std::string& str)
{

105
wxdata/source/scwx/wsr88d/rpg/storm_tracking_information_message.cpp
View file

@ -143,9 +143,110 @@ void StormTrackingInformationMessage::Impl::ParseStormPositionForecastPage(
// clang-format on
else if (i >= 7 && line.size() >= 80)
{
// TODO: STI Record
std::string stormId = line.substr(2, 2);
(void) (stormId);
if (std::isupper(stormId[0]) && std::isdigit(stormId[1]))
{
auto& record = stiRecords_[stormId];
if (record.currentPosition_.azimuth_ == std::nullopt)
{
// Current Position: Azimuth (Degrees)
auto azimuth =
util::TryParseUnsignedLong<std::uint16_t>(line.substr(9, 3));
if (azimuth.has_value())
{
record.currentPosition_.azimuth_ =
units::angle::degrees<std::uint16_t> {azimuth.value()};
}
}
if (record.currentPosition_.range_ == std::nullopt)
{
// Current Position: Range (Nautical Miles)
auto range =
util::TryParseUnsignedLong<std::uint16_t>(line.substr(13, 3));
if (range.has_value())
{
record.currentPosition_.range_ =
units::length::nautical_miles<std::uint16_t> {
range.value()};
}
}
if (record.direction_ == std::nullopt)
{
// Movement: Direction (Degrees)
auto direction =
util::TryParseUnsignedLong<std::uint16_t>(line.substr(19, 3));
if (direction.has_value())
{
record.direction_ =
units::angle::degrees<std::uint16_t> {direction.value()};
}
}
if (record.speed_ == std::nullopt)
{
// Movement: Speed (Knots)
auto speed =
util::TryParseUnsignedLong<std::uint16_t>(line.substr(23, 3));
if (speed.has_value())
{
record.speed_ =
units::velocity::knots<std::uint16_t> {speed.value()};
}
}
for (std::size_t j = 0; j < record.forecastPosition_.size(); ++j)
{
const std::size_t positionOffset = j * 10;
if (record.forecastPosition_[j].azimuth_ == std::nullopt)
{
// Forecast Position: Azimuth (Degrees)
std::size_t offset = 31 + positionOffset;
auto azimuth = util::TryParseUnsignedLong<std::uint16_t>(
line.substr(offset, 3));
if (azimuth.has_value())
{
record.forecastPosition_[j].azimuth_ =
units::angle::degrees<std::uint16_t> {azimuth.value()};
}
}
if (record.forecastPosition_[j].range_ == std::nullopt)
{
// Forecast Position: Range (Nautical Miles)
std::size_t offset = 35 + positionOffset;
auto range = util::TryParseUnsignedLong<std::uint16_t>(
line.substr(offset, 3));
if (range.has_value())
{
record.forecastPosition_[j].range_ =
units::length::nautical_miles<std::uint16_t> {
range.value()};
}
}
}
if (record.forecastError_ == std::nullopt)
{
// Forecast Error (Nautical Miles)
auto forecastError = util::TryParseFloat(line.substr(71, 4));
if (forecastError.has_value())
{
record.forecastError_ = units::length::nautical_miles<float> {
forecastError.value()};
}
}
if (record.meanError_ == std::nullopt)
{
// Mean Error (Nautical Miles)
auto meanError = util::TryParseFloat(line.substr(76, 4));
if (meanError.has_value())
{
record.meanError_ =
units::length::nautical_miles<float> {meanError.value()};
}
}
}
}
}
}