[SOLVED] BASH --> esc key in a case statement

manwithaplan · 10-05-2009, 08:58 PM

This is just an example... I would like it when I press "esc" "^]" to exit and run my leavin function. But it only is printing the esc charcter on the screen. Still a novice and I can't find info on the ABS guide.

Code:

echo -e "This script is used to copy all the PKGBUILDS needed into a build 
directory of choice\n
This portion of print is a test" 

read key
 case $key in
	*) abscopy ;;
      255) leavin ;;
 esac

Its been awhile since I have been scripting... Though I can get the escape character to work with a dialog box...

lutusp · 10-05-2009, 09:07 PM

Quote:

Originally Posted by manwithaplan

This is just an example... I would like it when I press "esc" "^]" to exit and run my leavin function. But it only is printing the esc charcter on the screen. Still a novice and I can't find info on the ABS guide.

Code:

echo -e "This script is used to copy all the PKGBUILDS needed into a build 
directory of choice\n
This portion of print is a test" 

read key
 case $key in
	*) abscopy ;;
      255) leavin ;;
 esac

Its been awhile since I have been scripting... Though I can get the escape character to work with a dialog box...

In order to read single characters, you would have to jump through hoops, and afterward you terminal session will be totally messed up.

Try to design your script so that it doesn't require responses to single keystrokes.

manwithaplan · 10-05-2009, 09:13 PM

Quote:

Originally Posted by lutusp

In order to read single characters, you would have to jump through hoops, and afterward you terminal session will be totally messed up.

Try to design your script so that it doesn't require responses to single keystrokes.

Thanks ... After spending more then hour on different escape sequences, your advice is sound... I adjusted my read with a -s switch and just going to go with a Ctrl-C.

Though if I could write a function that responded to characters on the keyboard would be nice... I might all together abandon this bash and use python.

michaelk · 10-05-2009, 10:04 PM

Its not to messy.

Code:

read -s -n1  key

 case $key in
     $'\e') echo "Escape";;
 esac

manwithaplan · 10-05-2009, 10:18 PM

Quote:

Originally Posted by michaelk

Its not to messy.

Code:

read -s -n1  key

 case $key in
     $'\e') echo "Escape";;
 esac

Ya I have tried this ... for some reason it always defaults to my "abscopy" function

Code:

clear
echo -e "This script is used to copy all the PKGBUILDS needed into a build 
directory of your coice\n
Press Enter to continue or Ctr-C to quit" 
read -s -n1 key
case $key in
	*) abscopy ;;
    $'\e') exit ;;   # I've specified my "leavin" function and even exit.
esac

So when I press the esc key it always continues the program with my "abscopy" function, even though its not specified in the case.

slakmagik · 10-05-2009, 10:23 PM

You need your 'default' case at the end. Otherwise '*' will match before anything else is reached.

manwithaplan · 10-05-2009, 10:33 PM

Quote:

Originally Posted by slakmagik

You need your 'default' case at the end. Otherwise '*' will match before anything else is reached.

DOPE

.... its been awhile ... forgot that there was a specific order...

Thanks