Re: Color bash prompt in function of the charge of battery (acpi based)

[Jason Kraftcheck <kraftche@cae.wisc.edu>]

Here's an update to my APM version of this.  It incoprorates some of 
Fabio's changes to his ACPI version.  It also reads directly from 
/proc/apm rather than using the apm command because it is faster and 
easier to parse, but may break for other kernel versions (I'm using 2.4.20).


if [ -f /proc/apm ]; then

  function apm_read
  {
    APM_STRING=(`cat /proc/apm`)
    APM_DRIVER_VERSION=${APM_STRING[0]}
    APM_BIOS_VERSION=${APM_STRING[1]}
    APM_TIME=${APM_STRING[7]}
    if [ $APM_TIME -lt 0 ]; then
      APM_NO_BATT=1
      APM_PERCENT=0
    else
      AMP_NO_BATT=0
      APM_PERCENT=${APM_STRING[6]%%%*}
    fi

    if [ "${APM_STRING[3]}" == "0x00" ]; then
      APM_AC=-
      case $APM_PERCENT in
        10?)  APM_COLOR="1;37"  ;;
         9?)  APM_COLOR="0;34"  ;;
         8?)  APM_COLOR="0;34"  ;;
         7?)  APM_COLOR="0;34"  ;;
         6?)  APM_COLOR="0;34"  ;;
         5?)  APM_COLOR="0;32"  ;;
         4?)  APM_COLOR="0;32"  ;;
         3?)  APM_COLOR="1;33"  ;;
         2?)  APM_COLOR="1;33"  ;;
         1?)  APM_COLOR="0;31"  ;;
          ?)  APM_COLOR="0;31;5";;
          *)  APM_COLOR="0;35"  ;;
      esac
    else
      APM_AC=+
      APM_COLOR="1;37"
    fi
  }

  function apm_dump
  {
    apm_read
    echo "DRIVER_VERSION = $APM_DRIVER_VERSION"
    echo "BIOS_VERSION = $APM_BIOS_VERSION"
    echo "AC = $APM_AC"
    echo "PERCENT = $APM_PERCENT"
    echo "TIME = $APM_TIME"
    echo "NO_BATT = $AMP_NO_BATT"
    echo "COLOR = $APM_COLOR"
  }

  PROMPT_COMMAND=amp_read
  if [ "$TERM" == "linux"]; then
    PS1="\[\e[\${APM_COLOR}m\]\h\$\[\e[0m\] "
  else
    PS1="\[\e[1m\](\$APM_AC\$APM_PERCENT%)\h\$\[\e[0m\] "
  fi

fi



Fabio Sirna wrote:
> I do some change on the bash script that I've posted few days ago. This
> works better. It must be in the .bashrc.
>
>
> .,-''-,..,-''-,..,-''-,..,-''-,..,-''-,..,-''-,..,-''-,..,-''-,. 
> # Color the bash prompt in function of the percentage of battery
> # with acpi subsystem.
> # Based on the originally apm based script that has been posted
> # on debian-laptop by Jason Kraftcheck <kraftche@cae.wisc.edu>.
> #
> # This script is licensed under the GNU GPL version 2 or later,
> # see /usr/share/common-licences/GPL on a Debian system or
> # http://www.gnu.org/copyleft/gpl.html on the web.
>  
> # (c) 2003 Fabio 'farnis' Sirna <farnis@libero.it>
>
> function acpi_percent()
> {
>  if [ `cat /proc/acpi/battery/BAT0/state | grep present: |cut -d\  -f18` = "yes" ]; then
>   {
>    CAPACITY=`cat /proc/acpi/battery/BAT0/info |grep "design capacity:"|cut -d\  -f11`
>    LEVEL=`cat /proc/acpi/battery/BAT0/state | grep remaining|cut -d\  -f8`
>    ACPI_PERCENT=`echo $(( $LEVEL * 100 / $CAPACITY ))`
>    if [ "$LEVEL" = "$CAPACITY" ]; then
>     echo FULL
>    else
>     echo $ACPI_PERCENT%
>    fi
>   }
>  else echo "NO BATTERY"
>  fi
> }
>
> function acpi_charge()
> {
>  ACPI_CHARGE=`cat /proc/acpi/ac_adapter/AC/state | cut -d\  -f20`
>  case $ACPI_CHARGE in
>        *on-line*)
>          ACPI_CHARGE="+" ;;
>        *off-line*)
>          ACPI_CHARGE="-" ;;
>      esac
>      echo $ACPI_CHARGE
> }
>
> function acpi_color()
>    {
>      if  [  "$(acpi_charge)"  =  "+"  ];  then
>       {
>        if [ `cat /proc/acpi/battery/BAT0/state | grep present: |cut -d\  -f18` = "no" ]; then
>         echo  "0;31"
>        else echo  "1;32"
>       fi
>      }
>      else
>        case  $(acpi_percent)  in
>           10?%)  echo  "0;32"  ;;
>            9?%)  echo  "0;32"  ;;
>            8?%)  echo  "0;32"  ;;
>            7?%)  echo  "0;32"  ;;
>            6?%)  echo  "0;32"  ;;
>            5?%)  echo  "0;32"  ;;
>            4?%)  echo  "0;33"  ;;
>            3?%)  echo  "0;33"  ;;
>            2?%)  echo  "0;33"  ;;
>            1?%)  echo  "0;31"  ;;         
>             ?%)  echo  "0;31;5"  ;;
>              *)  echo  "0;35"  ;;
>             
>        esac
>      fi
>    }
>
> function  acpi_color_prompt
>    {
>      PS1='\[\e[$(acpi_color)m\][$(acpi_charge)$(acpi_percent)][\t] \u:\w\$>\[\e[0;37m\] '
>      #PS1="\[\e[$(acpi_color)m\]\h\$\[\e[0m\]  "
>    }
>
>    #  linux  console
>    if  [  "$TERM"  =  "linux"  ];  then
>      PROMPT_COMMAND=acpi_color_prompt
>    fi
>
>    function  echo_acpi
>    {
>      echo -n "($(acpi_charge)$(acpi_percent)) "
>    }
> .,-''-,..,-''-,..,-''-,..,-''-,..,-''-,..,-''-,..,-''-,..,-''-,.