tput console display problems

onykage · 11-30-2008, 09:31 AM

Guys, forgive me if this question has been asked before. I did a search first, and I didnt see anything similar to this in the 3+ pages of results.

I am rebuilding my prompt. This machine is a laptop, thus I wanted to add my battery status to the output, but I didnt really want it displayed on my prompt. So i started playing with tput.

tput outputs correctly. BUT, if I dont tell tput to move up 1 row, it will not display.

Code:

tput cuu1 
tput sc
tput cup x x
output something
tput rc

if the "cuu1" is not used before the save cursor, the tput does not display. If i try to undo the move up one row by using a carriage return inside my prompt, the tput does not display.

atm, the script works, but if any list or commnd issued follows the prompt.

Code:

[mypromptishere]$ ls -l
file1   file2    file3    file4   file5   file6
[mypromptishere]$ file7    file8   file9   file10

thus like the above, because tput moved up 1 row the last line of the output is put after my prompt instead of my prompt being put after the last row of the output.

anyone have any ideas? Or know of a fix for this?

onykage · 11-30-2008, 09:53 AM

lol, something hit me while posting my question, I tried it, and behold it worked like a charm. Here is a copy of my prompt.

Code:

# .bashrc
#!/bin/bash
#
# Bash battery monitor prompt
# @author onykage
# @date 113008
#

BATTERY=/proc/acpi/battery/BAT0

# all the colors in the rainbow
NOCOLOR="\[\033[0m\]"
BLACK="\[\033[0;30m\]"
GRAY="\[\033[1;30m\]"
BLUE="\[\033[0;34m\]"
LIGHT_BLUE="\[\033[1;34m\]"
GREEN="\[\033[0;32m\]"
LIGHT_GREEN="\[\033[1;32m\]"
CYAN="\[\033[0;36m\]"
TEAL="\[\033[1;36m\]"
RED="\[\033[0;31m\]"
PINK="\[\033[1;31m\]"
PURPLE="\[\033[0;35m\]"
LIGHT_PURPLE="\[\033[1;35m\]"
BROWN="\[\033[0;33m\]"
YELLOW="\[\033[1;33m\]"
LIGHT_GRAY="\[\033[0;37m\]"
WHITE="\[\033[1;37m\]"

PROMPT_COMMAND=prompt_command

function prompt_command {
#get battery info
REM_CAP=`grep "^remaining capacity" $BATTERY/state | awk '{ print $3 }'`
BATSTATE=`grep "^charging state" $BATTERY/state | awk '{ print $3 }'`
FULL_CAP=`grep "design capacity:" $BATTERY/info | tr -d A-z | tr -d " " | tr -d :`

CHARGE=$(((100*$REM_CAP)/$FULL_CAP))
#display battery status via tput
let prompt_x=$(tput cols)-25
tput sc
tput cup 1 $prompt_x
tput setaf 2 ; tput bold
echo -n "["
tput setab 4
tput setaf 3
echo -n "Battery: "
#adjust color of status based on amount.
case "${BATSTATE}" in
   'charged')
      tput setaf 7 ; echo -n "Full"
   ;;
   'charging')
      if [ $CHARGE -le "15" ]
       then
        tput setaf 1 ; echo -n $CHARGE% 
      fi

      if [ $CHARGE -le "30" ]
       then
        tput setaf 3 ; echo -n $CHARGE% 
       else
        tput setaf 2 ; echo -n $CHARGE% 
      fi
        tput setaf 5
        echo -n " Charging"
   ;;
   'discharging')
      if [ $CHARGE -le "15" ]
        then
         tput setaf 1 ; echo -n $CHARGE% 
      fi

      if [ $CHARGE -le "30" ]
        then
         tput setaf 3 ; echo -n $CHARGE% 
        else
         tput setaf 2 ; echo -n $CHARGE% 
      fi
         tput setaf 6
         echo -n " Draining"
   ;;
esac

tput setaf 2 ; tput bold 
tput setab 0
echo -n "]"
tput rc

case $TERM in
    xterm*)
        TITLEBAR='\[\033]0;\u@\h:\w\007\]'
        ;;
    *)]
        TITLEBAR=""
        ;;
esac

#start with prompt here ------>
PS1="$YELLOW-$LIGHT_BLUE-($YELLOW\u$LIGHT_BLUE@$YELLOW\h\
$LIGHT_BLUE)-(\
$YELLOW\$PWD\
$LIGHT_BLUE)-$YELLOW-\
$NOCOLOR\n\
$YELLOW-$LIGHT_BLUE-(\
$YELLOW\$(date +%H%M)$LIGHT_BLUE:$YELLOW\$(date \"+%a,%d %b %y\")\
$LIGHT_BLUE:$WHITE\$$LIGHT_BLUE)-$YELLOW-$NOCOLOR " 

PS2="$LIGHT_BLUE-$YELLOW-$YELLOW-$LIGHT_GRAY "

}
# end of file

its not perfect yet, but it works.
enjoy.