x1/bin/khatus_update_weather

   1 #! /bin/bash
   2
   3 set -e
   4
   5 STATION_ID="$1"  # ICAO designator. e.g. KJFK, KBOS
   6
   7 FILE_METAR_DECODED="$HOME/var/run/metar-${STATION_ID}-decoded"
   8 FILE_TEMP_FAHRENHEIT="${FILE_METAR_DECODED}-temp-fahrenheit"
   9 FILE_TEMP_CELSIUS="${FILE_METAR_DECODED}-temp-celsius"
  10
  11 (metar -d "$STATION_ID" 2>&1) > $FILE_METAR_DECODED  # TODO: Better error handling
  12
  13 awk \
  14     -v file_fahrenheit="$FILE_TEMP_FAHRENHEIT" \
  15     -v file_celsius="$FILE_TEMP_CELSIUS" \
  16     '
  17     /METAR pattern not found in NOAA data/ {
  18         failures++
  19     }
  20
  21     /^Temperature/ {
  22         celsius = $3;
  23         fahrenheit = (celsius * (9 / 5)) + 32;
  24     }
  25
  26     END {
  27         if (failures > 0) {
  28             print "--" > file_fahrenheit
  29             print "--" > file_celsius
  30         } else {
  31             print fahrenheit > file_fahrenheit
  32             print celsius    > file_celsius
  33         }
  34     }' \
  35     $FILE_METAR_DECODED