S70_battery

   1 #! /usr/bin/zsh
   2
   3 #
   4 # Prepare a "battery level" gauge ready to be used in prompt.
   5 #
   6
   7 battery_level()
   8 {
   9   local online remaining bstatus gauge gcolor
  10
  11   online=0
  12   acpi -a 2> /dev/null | grep -q "on-line" && online=1
  13
  14
  15   bstatus="$(acpi -b 2> /dev/null)"
  16   remaining="$(echo ${bstatus[(w)4]} | sed -r 's/(^[0-9]+)%.*/\1/')"
  17
  18   if [[ -z "$remaining" ]]; then
  19     psvar[2]=""
  20     return
  21   elif [[ "$remaining" -eq "100" && "$online" -eq "1" ]]; then
  22     psvar[2]=""
  23     return
  24   #elif [[ "$remaining" -gt "95" ]]; then
  25   #  export BATT_GAUGE=""
  26   #  return
  27   elif [[ "$remaining" -lt "10" ]]; then
  28     psvar[2]="►"
  29     psvar[3]="red"
  30     return
  31   fi
  32
  33   gauge=""
  34   gcolor="green"
  35
  36   for i in $(seq ${remaining[1]}); do
  37     gauge="${gauge}►"
  38   done
  39
  40   if [[ "${#gauge}" -lt "3" ]]; then
  41     gcolor="red"
  42   elif [[ "${#gauge}" -lt "6" ]]; then
  43     gcolor="yellow"
  44   fi
  45
  46   psvar[2]="${gauge}"
  47   psvar[3]="${gcolor}"
  48
  49 }
  50
  51 precmd_functions+="battery_level"