Daniele Fucini
96903a4d22
Replace the Weather plugin with weather.sh, which picks an icon from the METAR weather/sky and uses moon icons when the sun is down.
70 lines
3.1 KiB
Bash
Executable File
70 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
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# Current weather for xmobar, e.g. "<icon> 7°C": NOAA's decoded METAR (the source of xmobar's Weather plugin)
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# Icon from the weather, else the sky conditions; clear/partly/mostly cloudy get moon icons when the sun is down.
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# Temperature colors match the plugin's -L 0 -H 30: low up to 0, high above 30.
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STATION=LZIB LAT=48.2 LON=17.2
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declare -A ICON=(
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[thermometer]=$'\xef\x8b\x89' [day_sunny]=$'\xee\x8c\x8d' [night_clear]=$'\xee\x8c\xab'
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[day_cloudy]=$'\xee\x8c\x82' [night_partly_cloudy]=$'\xee\x8d\xb9' [day_sunny_overcast]=$'\xee\x8c\x8c'
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[night_cloudy]=$'\xee\x8d\xbe' [cloudy]=$'\xee\x8c\x92' [cloud]=$'\xee\x8c\xbd'
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[thunderstorm]=$'\xee\x8c\x9d' [rain_mix]=$'\xee\x8c\x96' [snow]=$'\xee\x8c\x9a' [showers]=$'\xee\x8c\x99'
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[rain]=$'\xee\x8c\x98' [sprinkle]=$'\xee\x8c\x9b' [fog]=$'\xee\x8c\x93' [smoke]=$'\xee\x8d\x9c'
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[dust]=$'\xee\x8d\x9d'
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)
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report=$(curl -sf --max-time 20 https://tgftp.nws.noaa.gov/data/observations/metar/decoded/"$STATION".TXT)
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temp=$(sed -n 's/^Temperature: .*(\([-0-9.]*\) C).*/\1/p' <<< "$report")
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if [[ -z $temp ]]; then
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echo "${ICON[thermometer]} N/A"
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exit 0
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fi
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# Phenomena "in the vicinity" aren't at the station; the rest are e.g. "light drizzle; mist"
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wx=$(sed -n 's/^Weather: //p' <<< "$report" | tr ';' '\n' | grep -v vicinity | tr '\n' ' ')
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wx=${wx,,}
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sky=$(sed -n 's/^Sky conditions: //p' <<< "$report")
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sky=${sky,,}
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# Sun above the horizon (elevation > -0.833°, as for sunrise/sunset) right now, from the low-precision solar position
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sun_up() {
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awk -v t="$(date +%s)" -v lat="$LAT" -v lon="$LON" 'BEGIN {
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r = atan2(0, -1) / 180; d = t / 86400 - 10957.5
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g = (357.529 + 0.98560028 * d) * r
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l = (280.459 + 0.98564736 * d + 1.915 * sin(g) + 0.020 * sin(2 * g)) * r
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e = (23.439 - 0.00000036 * d) * r
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ra = atan2(cos(e) * sin(l), cos(l)); s = sin(e) * sin(l); dec = atan2(s, sqrt(1 - s * s))
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h = (280.46061837 + 360.98564736629 * d + lon) * r - ra
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exit !(sin(lat * r) * sin(dec) + cos(lat * r) * cos(dec) * cos(h) > sin(-0.833 * r))
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}'
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}
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case $wx in
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*thunder*) icon=thunderstorm ;;
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*freezing*|*sleet*|*ice\ pellets*|*hail*) icon=rain_mix ;;
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*snow*rain*|*rain*snow*|*snow*drizzle*|*drizzle*snow*) icon=rain_mix ;;
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*snow*) icon=snow ;;
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*showers*) icon=showers ;;
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*rain*) icon=rain ;;
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*drizzle*) icon=sprinkle ;;
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*fog*|*mist*) icon=fog ;;
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*haze*|*smoke*) icon=smoke ;;
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*dust*|*sand*) icon=dust ;;
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*)
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case $sky in
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clear*) if sun_up; then icon=day_sunny; else icon=night_clear; fi ;;
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"mostly clear"*|"partly cloudy"*) if sun_up; then icon=day_cloudy; else icon=night_partly_cloudy; fi ;;
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"mostly cloudy"*) if sun_up; then icon=day_sunny_overcast; else icon=night_cloudy; fi ;;
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overcast*|obscured*) icon=cloudy ;;
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*) icon=cloud ;;
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esac
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;;
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esac
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if awk -v t="$temp" 'BEGIN { exit !(t > 30) }'; then color="#ffb86c"
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elif awk -v t="$temp" 'BEGIN { exit !(t > 0) }'; then color="#50fa7b"
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else color="#8be9fd"
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fi
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echo "${ICON[$icon]} <fc=$color>$temp</fc>°C"
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