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-rw-r--r--kweather/metar_parser.cpp871
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diff --git a/kweather/metar_parser.cpp b/kweather/metar_parser.cpp
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+++ b/kweather/metar_parser.cpp
@@ -0,0 +1,871 @@
+/***************************************************************************
+ metar_parser.cpp - Metar Parser
+ Based on code originally in weatherlib.cpp.
+ -------------------
+begin : Wed June 7 2004
+copyright : (C) 2004 by John Ratke
+ : (C) 2002-2004 Nadeem Hasan <nhasan@kde.org>
+ : (C) 2002-2004 Ian Geiser <geiseri@kde.org>
+email : jratke@comcast.net
+***************************************************************************/
+
+/***************************************************************************
+* *
+* This program is free software; you can redistribute it and/or modify *
+* it under the terms of the GNU General Public License as published by *
+* the Free Software Foundation; either version 2 of the License, or *
+* (at your option) any later version. *
+* *
+***************************************************************************/
+
+#include "config.h"
+
+#include <qdatetime.h>
+#include <kdebug.h>
+#include <math.h>
+
+#include "metar_parser.h"
+#include "stationdatabase.h"
+#include "sun.h"
+
+// Temperature conversion macros
+#define TEMP_C_TO_F(x) ( ((x) * 9/5) + 32 )
+#define TEMP_F_TO_C(x) ( ((x) - 32) * 5/9 )
+
+MetarParser::MetarParser(StationDatabase *stationDB,
+ KLocale::MeasureSystem units,
+ QDate date,
+ QTime time,
+ unsigned int localUTCOffset) :
+ m_stationDb(stationDB), m_units(units), m_date(date), m_time(time), m_localUTCOffset(localUTCOffset)
+{
+ CoverRegExp = QRegExp("^(FEW|SCT|BKN|OVC|SKC|CLR|CAVOK)([0-9]{3})?(?:TCU|CB)?$");
+ CurrentRegExp = QRegExp("^(\\+|-|VC)?([A-Z]{2,4})$");
+ WindRegExp = QRegExp("^([0-9]{3}|VRB)([0-9]{2,3})(?:G([0-9]{2,3}))?(KT|KMH|MPS)$");
+ VisRegExp = QRegExp("^([0-9]{1,2})SM$");
+ VisFracRegExp = QRegExp("^1/(2|4)SM$");
+ TempRegExp = QRegExp("^(M)?([0-9]{2})/(?:(M)?([0-9]{2}))?$");
+ TimeRegExp = QRegExp("^([0-9]{2}:[0-9]{2})$");
+ DateRegExp = QRegExp("^([0-9]{4}/[0-9]{2}/[0-9]{2})$");
+ PressRegExp = QRegExp("^([AQ])([0-9]{4})$");
+ TempTenRegExp = QRegExp("^T([01][0-9]{3})([01][0-9]{3})$");
+}
+
+void MetarParser::reset()
+{
+ // Initialize the WeatherInfo structure
+ weatherInfo.theWeather = QString::null;
+ weatherInfo.clouds = 0;
+ weatherInfo.windMPH = 0;
+ weatherInfo.tempC = 0;
+ weatherInfo.dewC = 0;
+ weatherInfo.heavy = false;
+ weatherInfo.qsCoverList.clear();
+ weatherInfo.qsCurrentList.clear();
+ weatherInfo.qsDate = m_date;
+ weatherInfo.qsTime = m_time;
+ weatherInfo.qsPressure = QString::null;
+ weatherInfo.qsTemperature = QString::null;
+ weatherInfo.qsDewPoint = QString::null;
+ weatherInfo.qsRelHumidity = QString::null;
+ weatherInfo.qsVisibility = QString::null;
+ weatherInfo.qsWindSpeed = QString::null;
+ weatherInfo.qsWindChill = QString::null;
+ weatherInfo.qsHeatIndex = QString::null;
+ weatherInfo.qsWindDirection = QString::null;
+ weatherInfo.stationNeedsMaintenance = false;
+}
+
+struct WeatherInfo MetarParser::processData(const QString &stationID, const QString &metar)
+{
+ reset();
+
+ weatherInfo.reportLocation = stationID;
+
+ kdDebug(12006) << "Processing data: " << metar << endl;
+
+ // Split at whitespace into tokens
+ QStringList dataList = QStringList::split(QRegExp("\\s+"), metar);
+ bool found = false;
+ bool beforeRemark = true;
+
+ for (QStringList::ConstIterator it = dataList.begin();
+ it != dataList.end(); ++it)
+ {
+ // Don't try to parse the ICAO location code
+ if ((!found) && (*it == weatherInfo.reportLocation.upper().stripWhiteSpace()))
+ {
+ found = true;
+ continue;
+ }
+
+ kdDebug(12006) << "Processing Token: " << *it << endl;
+
+ if (*it == "RMK")
+ {
+ beforeRemark = false;
+ continue;
+ }
+
+ if (beforeRemark)
+ {
+ if (parseDate(*it))
+ continue;
+ if (parseTime(*it))
+ continue;
+ if (parseWindSpeed(*it))
+ continue;
+ if (parseVisibility(it)) // Note, pass in iterator.
+ continue;
+ if (parseTemperature(*it))
+ continue;
+ if (parsePressure(*it))
+ continue;
+ if (parseCover(*it))
+ continue;
+ if (parseCurrent(*it))
+ continue;
+ }
+ else
+ {
+ if (parseTemperatureTenths(*it))
+ continue;
+ if (parseStationNeedsMaintenance(*it))
+ continue;
+ }
+ }
+
+ calcTemperatureVariables();
+ calcWindChill();
+ calcCurrentIcon();
+
+ return weatherInfo;
+}
+
+/** Parse the current cover type */
+bool MetarParser::parseCover(const QString &s)
+{
+ if (CoverRegExp.search(s) > -1)
+ {
+ kdDebug(12006) << "Cover: " << CoverRegExp.capturedTexts().join("-")
+ << endl;
+
+ QString sCode = CoverRegExp.cap(1);
+ float height = CoverRegExp.cap(2).toFloat(); // initially in 100's of feet
+ QString sClouds;
+ QString skycondition;
+
+ height *= 100;
+ if (m_units == KLocale::Metric)
+ {
+ height = height * 0.3048;
+ // using plural i18n form for proper translations
+ sClouds = i18n("1 meter", "%n meters", (int)height);
+ }
+ else
+ {
+ // using plural i18n form for proper translations
+ sClouds = i18n("1 foot", "%n feet", (int)height);
+ }
+
+ if (sCode == "FEW")
+ {
+ skycondition = i18n( "Few clouds at %1" ).arg(sClouds);
+ weatherInfo.clouds += 2;
+ }
+ else if (sCode == "SCT")
+ {
+ skycondition = i18n( "Scattered clouds at %1" ).arg(sClouds);
+ weatherInfo.clouds += 4;
+ }
+ else if (sCode == "BKN")
+ {
+ skycondition = i18n( "Broken clouds at %1" ).arg(sClouds);
+ weatherInfo.clouds += 8;
+ }
+ else if (sCode == "OVC")
+ {
+ skycondition = i18n( "Overcast clouds at %1" ).arg(sClouds);
+ weatherInfo.clouds += 64;
+ }
+ else if ((sCode == "CLR") || (sCode == "SKC") || (sCode == "CAVOK"))
+ {
+ skycondition = i18n("Clear skies");
+ weatherInfo.clouds = 0;
+ }
+
+ kdDebug(12006) << "*** Clouds: " << weatherInfo.clouds << endl;
+ weatherInfo.qsCoverList << skycondition;
+
+ return true;
+ }
+ return false;
+}
+
+/** Parse the current weather conditions */
+bool MetarParser::parseCurrent(const QString &s)
+{
+ if (CurrentRegExp.search(s) > -1)
+ {
+ QString sIntensity = CurrentRegExp.cap(1);
+ QString sCode = CurrentRegExp.cap(2);
+ QString intensity, descriptor, phenomena, currentWeather;
+
+ kdDebug(12006) << "Current: " << CurrentRegExp.capturedTexts().join("-") << endl;
+
+ // Decode the intensity
+ if (sIntensity == "+")
+ {
+ intensity = i18n("Heavy");
+ weatherInfo.heavy = true;
+ }
+ else if (sIntensity == "-")
+ {
+ intensity = i18n("Light");
+ weatherInfo.heavy = false;
+ }
+
+ // Decode the descriptor
+ if (sCode.contains("MI"))
+ descriptor = i18n("Shallow");
+ else if (sCode.contains("PR"))
+ descriptor = i18n("Partial");
+ else if (sCode.contains("BC"))
+ descriptor = i18n("Patches");
+ else if (sCode.contains("DR"))
+ descriptor = i18n("Low Drifting");
+ else if (sCode.contains("BL"))
+ descriptor = i18n("Blowing");
+ else if (sCode.contains("SH"))
+ {
+ descriptor = i18n("Showers");
+ weatherInfo.theWeather = "shower";
+ }
+ else if (sCode.contains("TS"))
+ {
+ descriptor = i18n("Thunder Storm");
+ weatherInfo.theWeather = "tstorm";
+ }
+ else if (sCode.contains("FZ"))
+ {
+ descriptor = i18n("Freezing");
+ }
+
+ // Decode weather phenomena
+ if (sCode.contains("DZ"))
+ {
+ phenomena = i18n("Drizzle");
+ weatherInfo.theWeather = "light_rain";
+ }
+ else if (sCode.contains("RA"))
+ {
+ phenomena = i18n("Rain");
+ weatherInfo.theWeather = "shower";
+ }
+ else if (sCode.contains("SN"))
+ {
+ phenomena = i18n("Snow");
+ weatherInfo.theWeather = "snow";
+ }
+ else if (sCode.contains("SG"))
+ {
+ phenomena = i18n("Snow Grains");
+ weatherInfo.theWeather = "snow4";
+ }
+ else if (sCode.contains("IC"))
+ {
+ phenomena = i18n("Ice Crystals");
+ weatherInfo.theWeather = "hail";
+ }
+ else if (sCode.contains("PE"))
+ {
+ phenomena = i18n("Ice Pellets");
+ weatherInfo.theWeather = "hail";
+ }
+ else if (s.contains("GR"))
+ {
+ phenomena = i18n("Hail");
+ weatherInfo.theWeather = "hail";
+ }
+ else if (sCode.contains("GS"))
+ {
+ phenomena = i18n("Small Hail Pellets");
+ weatherInfo.theWeather = "hail";
+ }
+ else if (s.contains("UP"))
+ {
+ phenomena = i18n("Unknown Precipitation");
+ weatherInfo.theWeather = iconName("shower1");
+ }
+ else if (sCode.contains("BR"))
+ {
+ phenomena = i18n("Mist");
+ // Mist has lower priority than say rain or snow
+ if ( weatherInfo.theWeather.isEmpty() )
+ {
+ weatherInfo.theWeather = "mist";
+ }
+ }
+ else if (sCode.contains("FG"))
+ {
+ phenomena = i18n("Fog");
+ // Fog has lower priority than say rain or snow
+ if ( weatherInfo.theWeather.isEmpty() )
+ {
+ weatherInfo.theWeather = "fog";
+ }
+ }
+ else if (sCode.contains("FU"))
+ phenomena = i18n("Smoke");
+ else if (sCode.contains("VA"))
+ phenomena = i18n("Volcanic Ash");
+ else if (sCode.contains("DU"))
+ phenomena = i18n("Widespread Dust");
+ else if (sCode.contains("SA"))
+ phenomena = i18n("Sand");
+ else if (sCode.contains("HZ"))
+ phenomena = i18n("Haze");
+ else if (sCode.contains("PY"))
+ phenomena = i18n("Spray");
+ else if (sCode.contains("PO"))
+ phenomena = i18n("Dust/Sand Swirls");
+ else if (sCode.contains("SQ"))
+ phenomena = i18n("Sudden Winds");
+ else if (sCode.contains("FC"))
+ {
+ if (sIntensity == "+")
+ currentWeather = i18n("Tornado");
+ else
+ phenomena = i18n("Funnel Cloud");
+ }
+ else if (sCode.contains("SS"))
+ phenomena = i18n("Sand Storm");
+ else if (sCode.contains("DS"))
+ phenomena = i18n("Dust Storm");
+
+ if (currentWeather.isEmpty()) currentWeather = i18n("%1 is the intensity, %2 is the descriptor and %3 is the phenomena", "%1 %2 %3").arg(intensity).arg(descriptor).arg(phenomena);
+
+ if (!currentWeather.isEmpty())
+ weatherInfo.qsCurrentList << currentWeather;
+
+ return true;
+ }
+ return false;
+}
+
+/** Parse out the current temperature */
+bool MetarParser::parseTemperature(const QString &s)
+{
+ if (TempRegExp.search(s) > -1)
+ {
+ kdDebug(12006) << "Temp: " << TempRegExp.capturedTexts().join("-")
+ << endl;
+
+ float fTemp = TempRegExp.cap(2).toFloat();
+ if (TempRegExp.cap(1) == "M" && fTemp != 0 )
+ fTemp *= -1;
+ float fDew = TempRegExp.cap(4).toFloat();
+ if (TempRegExp.cap(3) == "M" && fDew != 0 )
+ fDew *= -1;
+
+ weatherInfo.tempC = fTemp;
+ weatherInfo.dewC = fDew;
+ return true;
+ }
+ return false;
+}
+
+bool MetarParser::parseTemperatureTenths(const QString &s)
+{
+ if (TempTenRegExp.search(s) > -1)
+ {
+ kdDebug(12006) << "Temp Tenths: " << TempTenRegExp.capturedTexts().join("-")
+ << endl;
+
+ float temperature = TempTenRegExp.cap( 1 ).toFloat() / 10;
+ float dewPoint = TempTenRegExp.cap( 2 ).toFloat() / 10;
+
+ if ( temperature >= 100 )
+ {
+ temperature -= 100;
+ temperature *= -1;
+ }
+ if ( dewPoint >= 100 )
+ {
+ dewPoint -= 100;
+ dewPoint *= -1;
+ }
+
+ weatherInfo.tempC = temperature;
+ weatherInfo.dewC = dewPoint;
+
+ return true;
+ }
+ return false;
+}
+
+void MetarParser::calcTemperatureVariables()
+{
+#define E(t) ::pow(10, 7.5*t/(237.7+t))
+ float fRelHumidity = E(weatherInfo.dewC)/E(weatherInfo.tempC) * 100;
+ if (fRelHumidity > 100.0) fRelHumidity = 100.0;
+
+ weatherInfo.qsRelHumidity.sprintf("%.1f", fRelHumidity);
+ removeTrailingDotZero(weatherInfo.qsRelHumidity);
+ weatherInfo.qsRelHumidity += "%";
+
+ float fHeatIndex = 0;
+ float tempF = TEMP_C_TO_F(weatherInfo.tempC);
+ if (tempF >= 80)
+ {
+#define SQR(a) ((a)*(a))
+ fHeatIndex = -42.379 + (2.04901523*tempF)
+ + (10.14333127*fRelHumidity)
+ - (0.22475541*tempF*fRelHumidity)
+ - (0.00683783*SQR(tempF))
+ - (0.05481717*SQR(fRelHumidity))
+ + (0.00122874*SQR(tempF)*fRelHumidity)
+ + (0.00085282*tempF*SQR(fRelHumidity))
+ - (0.00000199*SQR(tempF)*SQR(fRelHumidity));
+
+ if ( fHeatIndex <= tempF )
+ fHeatIndex = 0;
+ }
+
+ QString unit;
+ if (m_units == KLocale::Metric)
+ {
+ unit = i18n("°C");
+ weatherInfo.qsTemperature.sprintf("%.1f", weatherInfo.tempC);
+ weatherInfo.qsDewPoint.sprintf("%.1f", weatherInfo.dewC);
+ if (fHeatIndex >= 80)
+ weatherInfo.qsHeatIndex.sprintf("%.1f", TEMP_F_TO_C(fHeatIndex));
+ }
+ else
+ {
+ unit = i18n("°F");
+ weatherInfo.qsTemperature.sprintf("%.1f", tempF);
+ weatherInfo.qsDewPoint.sprintf("%.1f", TEMP_C_TO_F(weatherInfo.dewC));
+ if (fHeatIndex >= 80)
+ weatherInfo.qsHeatIndex.sprintf("%.1f", (fHeatIndex));
+ }
+
+ removeTrailingDotZero(weatherInfo.qsTemperature);
+ removeTrailingDotZero(weatherInfo.qsDewPoint);
+ removeTrailingDotZero(weatherInfo.qsHeatIndex);
+
+ weatherInfo.qsTemperature += unit;
+ weatherInfo.qsDewPoint += unit;
+ if (!weatherInfo.qsHeatIndex.isEmpty())
+ weatherInfo.qsHeatIndex += unit;
+}
+
+void MetarParser::removeTrailingDotZero(QString &string)
+{
+ if ( string.right( 2 ) == ".0" )
+ {
+ string = string.left( string.length() - 2 );
+ }
+}
+
+/** Parse out the current date. */
+bool MetarParser::parseDate(const QString &s)
+{
+ if (DateRegExp.search(s) > -1)
+ {
+ kdDebug(12006) << "Date: " << DateRegExp.capturedTexts().join("-")
+ << endl;
+ QString dateString = DateRegExp.cap(1);
+ QString day, month, year;
+
+ day = dateString.mid(8,2);
+ month = dateString.mid(5,2);
+ year = dateString.mid(0,4);
+
+ QDate theDate(year.toInt(), month.toInt(), day.toInt());
+
+
+ weatherInfo.qsDate = theDate;
+ return true;
+ }
+ return false;
+}
+
+/** Parse out the current time. */
+bool MetarParser::parseTime(const QString &s)
+{
+ if (TimeRegExp.search(s) > -1)
+ {
+ kdDebug(12006) << "Time: " << TimeRegExp.capturedTexts().join("-")
+ << endl;
+
+ QString hour, minute, dateString;
+
+ dateString = TimeRegExp.cap(1);
+ hour = dateString.mid(0,2);
+ minute = dateString.mid(3,2);
+ QTime theTime(hour.toInt(), minute.toInt());
+
+ weatherInfo.qsTime = theTime;
+ return true;
+ }
+ return false;
+}
+
+/** Parse out the current visibility */
+bool MetarParser::parseVisibility(QStringList::ConstIterator it)
+{
+ float fVisibility = 0;
+
+ if (VisRegExp.search(*it) > -1)
+ {
+ fVisibility = VisRegExp.cap(1).toFloat();
+
+ kdDebug(12006) << "Visibility: " << VisRegExp.capturedTexts().join("-")
+ << endl;
+
+ }
+ else if (VisFracRegExp.search(*it) > -1)
+ {
+ // got a fractional visibility, go back to previous string in the list
+ // and get the whole part.
+ fVisibility = (*(it--)).toFloat();
+ // shouldn't be necessary?
+ //it++;
+ fVisibility += ( 1 / VisFracRegExp.cap(1).toFloat() );
+ }
+
+ if (fVisibility > 0)
+ {
+ if (m_units == KLocale::Metric)
+ {
+ fVisibility *= 1.6;
+ weatherInfo.qsVisibility.setNum(fVisibility);
+ weatherInfo.qsVisibility += i18n("km");
+ }
+ else
+ {
+ weatherInfo.qsVisibility.setNum(fVisibility);
+ weatherInfo.qsVisibility += i18n("m");
+ }
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+}
+
+/** Parse out the current pressure. */
+bool MetarParser::parsePressure( const QString &s)
+{
+ if (PressRegExp.search(s) > -1)
+ {
+ QString type = PressRegExp.cap(1);
+ float fPressure = PressRegExp.cap(2).toFloat();
+
+ kdDebug(12006) << "Pressure: " << PressRegExp.capturedTexts().join("-")
+ << endl;
+
+ if (m_units == KLocale::Metric)
+ {
+ if (type == "A")
+ fPressure *= (33.8639/100);
+ weatherInfo.qsPressure.setNum(fPressure, 'f', 0);
+ weatherInfo.qsPressure += i18n(" hPa");
+ }
+ else
+ {
+ if (type == "Q")
+ fPressure /= 33.8639;
+ else
+ fPressure /= 100;
+ weatherInfo.qsPressure.setNum(fPressure, 'f', 2);
+ weatherInfo.qsPressure += i18n("\" Hg");
+ }
+ return true;
+ }
+ return false;
+}
+
+struct wind_info
+{
+ unsigned int number;
+ QString name;
+};
+
+static const struct wind_info wind_direction[] =
+{
+ { 0, i18n("N") }, // North is 0 to 11, and so on
+ { 12, i18n("NNE") },
+ { 33, i18n("NE") },
+ { 57, i18n("ENE") },
+ { 79, i18n("E") },
+ { 102, i18n("ESE") },
+ { 124, i18n("SE") },
+ { 147, i18n("SSE") },
+ { 169, i18n("S") },
+ { 192, i18n("SSW") },
+ { 214, i18n("SW") },
+ { 237, i18n("WSW") },
+ { 259, i18n("W") },
+ { 282, i18n("WNW") },
+ { 304, i18n("NW") },
+ { 327, i18n("NNW") },
+ { 349, i18n("N") },
+ { 360, i18n("N") }
+};
+
+
+QString MetarParser::parseWindDirection(const unsigned int direction)
+{
+ unsigned int i = 0;
+
+ for (i = 0; i < (sizeof(wind_direction) / sizeof(wind_info)) - 1; i++)
+ {
+ if (direction >= wind_direction[i].number &&
+ direction < wind_direction[i + 1].number)
+ {
+ break;
+ }
+ }
+
+ return wind_direction[i].name;
+}
+
+/** Parse the wind speed */
+bool MetarParser::parseWindSpeed(const QString &s)
+{
+ if (WindRegExp.search(s) > -1)
+ {
+ unsigned int direction = WindRegExp.cap(1).toInt();
+ float windSpeed = WindRegExp.cap(2).toFloat();
+ float gustSpeed = WindRegExp.cap(3).toFloat();
+ QString sWindUnit = WindRegExp.cap(4);
+
+ kdDebug(12006) << "Wind: " << WindRegExp.capturedTexts().join("-")
+ << endl;
+
+ if (m_units == KLocale::Metric)
+ {
+ if (sWindUnit == "KT")
+ {
+ windSpeed = (windSpeed * 3.6 / 1.94);
+ gustSpeed = (gustSpeed * 3.6 / 1.94);
+ }
+ else if (sWindUnit == "MPS")
+ {
+ windSpeed = (windSpeed * 3.6);
+ gustSpeed = (gustSpeed * 3.6);
+ }
+ weatherInfo.windMPH = (windSpeed / 1.61);
+ weatherInfo.qsWindSpeed = i18n("1 km/h", "%n km/h", (int) windSpeed);
+ }
+ else
+ {
+ if (sWindUnit == "KT")
+ {
+ windSpeed = (windSpeed * 2.24 / 1.94);
+ gustSpeed = (gustSpeed * 2.24 / 1.94);
+ }
+ else if (sWindUnit == "KMH")
+ {
+ windSpeed = (windSpeed / 1.61);
+ gustSpeed = (gustSpeed / 1.61);
+ }
+ else if (sWindUnit == "MPS")
+ {
+ windSpeed = (windSpeed * 2.24);
+ gustSpeed = (gustSpeed * 2.24);
+ }
+ weatherInfo.windMPH = windSpeed;
+ weatherInfo.qsWindSpeed = i18n("1 MPH", "%n MPH", (int) windSpeed);
+ }
+
+ if (gustSpeed >= 1)
+ {
+ if (m_units == KLocale::Metric)
+ {
+ weatherInfo.qsCurrentList << i18n("Wind gusts up to 1 km/h",
+ "Wind gusts up to %n km/h", (int) gustSpeed);
+ }
+ else
+ {
+ weatherInfo.qsCurrentList << i18n("Wind gusts up to 1 MPH",
+ "Wind gusts up to %n MPH", (int) gustSpeed);
+ }
+ }
+
+ if ((WindRegExp.cap(1) != "VRB") && (windSpeed >= 1))
+ {
+ weatherInfo.qsWindDirection = parseWindDirection(direction);
+ }
+ return true;
+ }
+ return false;
+}
+
+bool MetarParser::parseStationNeedsMaintenance(const QString &s)
+{
+ if (s == "$")
+ {
+ weatherInfo.stationNeedsMaintenance = true;
+ kdDebug(12006) << "Station Needs Maintenance" << endl;
+ return true;
+ }
+
+ return false;
+}
+
+void MetarParser::calcCurrentIcon()
+{
+ // Default to overcast clouds
+ if ( weatherInfo.clouds == -1 )
+ weatherInfo.clouds = 64;
+
+ if (weatherInfo.theWeather.isEmpty())
+ {
+ if (weatherInfo.clouds == 0)
+ weatherInfo.theWeather = iconName("sunny");
+ else if (weatherInfo.clouds > 0 && weatherInfo.clouds <= 2)
+ weatherInfo.theWeather = iconName("cloudy1");
+ else if ( weatherInfo.clouds > 2 && weatherInfo.clouds <= 4)
+ weatherInfo.theWeather = iconName("cloudy2");
+ else if ( weatherInfo.clouds > 4 && weatherInfo.clouds <= 8)
+ weatherInfo.theWeather = iconName("cloudy3");
+ else if ( weatherInfo.clouds > 8 && weatherInfo.clouds < 63)
+ weatherInfo.theWeather = iconName( "cloudy4" );
+ else
+ weatherInfo.theWeather = "cloudy5";
+ }
+ else if (weatherInfo.theWeather == "tstorm")
+ {
+ if ( weatherInfo.heavy )
+ weatherInfo.clouds = 30;
+
+ if (weatherInfo.clouds >= 0 && weatherInfo.clouds <= 10)
+ weatherInfo.theWeather = iconName("tstorm1");
+ else if ( weatherInfo.clouds > 10 && weatherInfo.clouds <= 20)
+ weatherInfo.theWeather = iconName("tstorm2");
+ else
+ weatherInfo.theWeather = "tstorm3";
+ }
+ else if (weatherInfo.theWeather == "shower")
+ {
+ if ( weatherInfo.heavy )
+ weatherInfo.clouds = 30;
+
+ if (weatherInfo.clouds >= 0 && weatherInfo.clouds <= 10)
+ weatherInfo.theWeather = iconName("shower1");
+ else if ( weatherInfo.clouds > 10 && weatherInfo.clouds <= 20)
+ weatherInfo.theWeather = iconName("shower2");
+ else
+ weatherInfo.theWeather = "shower3";
+ }
+ else if (weatherInfo.theWeather == "snow")
+ {
+ if ( weatherInfo.heavy )
+ weatherInfo.clouds = 30;
+
+ if (weatherInfo.clouds >= 0 && weatherInfo.clouds <= 8)
+ weatherInfo.theWeather = iconName("snow1");
+ else if ( weatherInfo.clouds > 8 && weatherInfo.clouds <= 16)
+ weatherInfo.theWeather = iconName("snow2");
+ else if (weatherInfo.clouds > 16 && weatherInfo.clouds <= 24)
+ weatherInfo.theWeather = iconName("snow3");
+ else
+ weatherInfo.theWeather = "snow5";
+ }
+ else if (isNight(weatherInfo.reportLocation) && weatherInfo.theWeather == "mist")
+ weatherInfo.theWeather = "mist_night";
+ else if (isNight(weatherInfo.reportLocation) && weatherInfo.theWeather == "fog")
+ weatherInfo.theWeather = "fog_night";
+ else if ( weatherInfo.theWeather == "mist" || weatherInfo.theWeather == "fog" )
+ {
+ if ( weatherInfo.clouds >= 63 )
+ weatherInfo.theWeather = "cloudy5";
+ }
+
+ kdDebug(12006) << "Clouds: " << weatherInfo.clouds << ", Icon: "
+ << weatherInfo.theWeather << endl;
+}
+
+void MetarParser::calcWindChill()
+{
+ float windChill = 35.74 + (0.6215 * TEMP_C_TO_F(weatherInfo.tempC))
+ - (35.75 * ::pow(weatherInfo.windMPH, 0.16))
+ + (0.4275 * TEMP_C_TO_F(weatherInfo.tempC) * ::pow(weatherInfo.windMPH, 0.16));
+
+ kdDebug(12006) << "Wind Chill: " << windChill << endl;
+
+ if (windChill < 48)
+ {
+ if (m_units == KLocale::Metric)
+ {
+ weatherInfo.qsWindChill.setNum(TEMP_F_TO_C(windChill), 'f', 1);
+ removeTrailingDotZero(weatherInfo.qsWindChill);
+ weatherInfo.qsWindChill += i18n("°C");
+ }
+ else
+ {
+ weatherInfo.qsWindChill.setNum(windChill, 'f', 1);
+ removeTrailingDotZero(weatherInfo.qsWindChill);
+ weatherInfo.qsWindChill += i18n("°F");
+ }
+ }
+}
+
+bool MetarParser::isNight(const QString &stationID) const
+{
+ QString upperStationID = stationID.upper();
+ QString latitude = m_stationDb->stationLatitudeFromID(upperStationID);
+ QString longitude = m_stationDb->stationLongitudeFromID(upperStationID);
+
+ if ( latitude.compare( i18n("Unknown Station" ) ) == 0 ||
+ longitude.compare( i18n("Unknown Station" ) ) == 0 )
+ {
+ return false;
+ }
+ else
+ {
+ Sun theSun( latitude, longitude , m_date, m_localUTCOffset );
+
+ QTime currently = m_time;
+
+ QTime civilStart = theSun.computeCivilTwilightStart();
+ QTime civilEnd = theSun.computeCivilTwilightEnd();
+
+ kdDebug (12006) << "station, current, lat, lon, start, end, offset: " <<
+ upperStationID << " " << currently << " " << latitude << " " <<
+ longitude << " " << civilStart << " " << civilEnd << " " <<
+ m_localUTCOffset << endl;
+
+ if (civilStart != civilEnd)
+ {
+ if (civilEnd < civilStart)
+ /* Handle daylight past midnight in local time */
+ /* for weather stations located at other timezones */
+ return (currently < civilStart && currently > civilEnd);
+ else
+ return (currently < civilStart || currently > civilEnd);
+ }
+ else
+ {
+ // Midnight Sun & Polar Night - In summer, the Sun is always
+ // over the horizon line ... so use latitude & today date to
+ // set isNight() value.
+ return ((m_date.daysInYear() >= 80 || m_date.daysInYear() <= 264) && latitude.contains("S"));
+ }
+ }
+}
+
+QString MetarParser::iconName( const QString &icon ) const
+{
+ QString _iconName = icon;
+
+ if ( isNight( weatherInfo.reportLocation ) )
+ _iconName += "_night";
+
+ return _iconName;
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-16 19:30:08 +0000