Creating menu list from configuration file - Shell Programming and Scripting

nir_s · #1 01-10-2006

Hi folks,

I have the following function ,which generates menu for installation type:

Code:

select_install_type()
{

        echo
        echo ========================================
        echo Please select the type of installation:
        echo ========================================
        echo

        pass=fail
        until [[ ${pass} = pass ]] ; do

        select installType in `cat /tmp/layers.conf`
                do
if [[  ${installType} = "Quit" ]] ; then

                        echo "\n**** !! Exiting by user's request !! ****\n"
                        exit 2

                elif  [[ -z "${installType}" ]] ; then

                        echo "\n**** !! Invalid Option !! ****\n"
                        continue
               elif [[  ${installType} = "Database_Layer"  ]] ; then
                        export installType=DatabaseLayer
                        pass=pass
                        break
elif [[  ${installType} = "RiGHTv_Admin_Layer"  ]] ; then
                        export installType=RTEAdminLayer
                        pass=pass
                        break

                elif [[  ${installType} = "RTEsub_Layer"  ]] ; then
                        export installType=RTESubLayer
                        pass=pass
                        break

                else

                        echo "Invalid Install Type"
                        exit
                fi

        done
      done
}

The content of conf file layers.conf is:

Code:

root# cat layers.conf
Database Layer
RiGHTv Adminstration Layer
RTE Subscribers Layer
Quit

If I run it:

Code:

root# ./get_layer.ksh

========================================
Please select the type of installation:
========================================

1) Database
2) Layer
3) RiGHTv
4) Adminstration
5) Layer
6) RTE
7) Subscribers
8) Layer
9) Quit
#?

As you can see ,The problem is the spaces between the words which cause the menu to display each word in different line.
How can I overcome it?
The expected result is:

Code:

========================================
Please select the type of installation:
========================================

1) Database Layer
2) RiGHTv Adminstration Layer
3) RTE Subscribers Layer
4) Quit
#?

Thanks in advance,
Nir

matrixmadhan · #2 01-10-2006

one idea i could suggest is have delimiters like "|" instead of spaces in your configuration file so that it look like

Database|Layer
Database_Layer

though this idea is not efficient this would solve your problem for sure.

nir_s · #3 01-10-2006

Thanks but it does not work

Code:

========================================
Please select the type of installation:
========================================

1) Database|Layer
2) RiGHTv|Adminstration|Layer
3) RTE|Subscribers|Layer
4) Quit
#? 4

Any more suggestions?

Thanks in advance,
Nir

matrixmadhan · #4 01-10-2006

I could see a mismatch in your configuration file and the hard-coded values in script,

Quote:

========================================
Please select the type of installation:
========================================

1) Database_Layer
2) RiGHTv_Adminstration_Layer
3) RTE_Subscribers_Layer
4) Quit

Have you changed the validation accordingly in the script ?

elif [[ ${installType} = "Database_Layer" ]] ; then

the underscore between Database and Layer !!!
hope this helps.

nir_s · #5 01-10-2006

Yes I saw this mismatch but it is does not influence about how the menu is displayed. It is still displayed incorrectly on the screen.

linuxpenguin · #6 01-10-2006

hmm, i had always faced this problem with for loop, so i used to use a while loop

cat filename|while read a
do
..
done

but in this scenario, you may have to implement your own type of select, i.e ability to link these lines with line numbers.

zazzybob · #7 01-10-2006

Quote:

Originally Posted by linuxpenguin

hmm, i had always faced this problem with for loop, so i used to use a while loop
cat filename|while read a
do
..
done

UUoC

while read line; do
.
.
done < filename

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