BASH: How To Create a Setup Script to build another script

Question

The "Setup" script will be used multiple times to create as many different scripts as are required.

• There are up to 6 variables I need to collect.

• The Collection of variables needs to be limited to however long the
  directory is, (i.e. 3 required for ~/AOKP/vendor/aokp and 2 required for ~/AOKP/Build)

Expected Output: a child script named using the correct number of variables (ie frameworks_base.sh)

The "Setup" script follows:

#Create Array
echo "Please enter your Working Directory ROOT (Just the word: For ~/OurROM/ type: OurROM)"
read root
echo "Please Enter the Subequent Directories to the location of your git directory
# -a makes read command to read into an array
read -a gitdir
# get number of elements in the array
elements=${#gitdir[@]}
index=0

while [ "$index" -lt "$elements" ]
do 
?????????
echo "Your Directory is ~/$root/${gitdir[0]}/${gitdir[1]}/${gitdir[2]}" 

The Child Script (NOT needed to answer... Informational only) that needs the changes follows:

            #!/bin/bash

    # This script can be modified to allow for any directory
    # Be sure to change all Directory References. References will be proceded in the line above by a *

    clear

           # * Change if Required
    cd ~/OurROM/.scripts
    wait

    while true; do
    clear
                                   # * Change if Required
    echo "What would you like to do with .scripts?"
    echo "1.  Enter Commit Message"
    echo "2.  Add All Changes"
    echo "3.  Commit All Changes"
    echo "4.  Push All Changes"
    echo "5.  Reset All Changes"
    echo "6.  Merge Current Directory"
    echo "7.  REVERT a Commit"
    echo "8.  "
    echo "9.  "
    echo "10. "
    echo ""
    echo "Current Commit Message: $commit"
    echo ""
    echo -n "Enter your choice, or 0 for exit: "
    read choice
    echo

    case $choice in
         1)
         clear
         echo "Please Enter Your Commit Message:"
         read commit
         echo ""
         echo "Commit: '$commit' - has been recorded"
         echo ""
         read -p "Press [Enter] key to continue..."
         ;;
         2)
         clear
         echo "Deleting all Hidden files"
         find ~/OurROM/ -iname "*.*~" -type f -exec rm {} \;
         wait
         echo "All HIDDEN files Deleted"
         git add --all && git add . && git add -u
         wait
         echo ""
         echo "Changes have been added"
         read -p "Press [Enter] key to continue..."
         ;;
         3)
         clear
         echo "Executing Commit..."
         git commit -m "$commit"
         wait
         echo ""
         echo "Message Commited"
         echo ""
         read -p "Press [Enter] key to continue..."
         ;;
         4)
         clear
         echo "Pushing your Commit..."
                                        # * Change if Required
         git push git@github.com:OurROM/.scripts.git HEAD:jb-mr1
         wait
         echo ""
         echo "$commit - has been pushed to OurROM"
         echo ""
         read -p "Press [Enter] key to continue..."
         ;;
         5)
         clear
         git reset --hard HEAD && git clean -f && git checkout origin/jb-mr1
         wait
         echo ""
         echo ".scripts has been RESET"
         echo ""
         read -p "Press [Enter] key to continue..."
         ;;
         6)
         clear
         git merge origin/jb-mr1
         wait
         echo ""
         echo "Local Directory is Merged with Online Data"
         echo "" 
         read -p "Press [Enter] key to continue..."
         ;;
         7)
         clear
         echo ""
         echo "Paste the Commit Number you would like to Revert:"
         read revert 
         echo "Commit #: '$revert' - will be reverted. Is this Correct?"
            select yn in "Yes" "No"; do
                case $yn in
                    Yes ) git revert $revert; wait; echo "Commit $revert has been reverted"; read -p "Press [Enter] key to continue..."; break;;
                    No ) break;
                esac
             done
         echo ""
         ;;
         8)
XXXXX REMOVED FOR BREVITY XXXXXXX
         *)
         echo "That is not a valid choice, try a number from 0 to 10."
         ;;
    esac  
    done

PART 3: I've Used All the Input from You and gotten what I want, now for some finesse! How Do I appropriately nest the following 2 While statements to Gather the Data in one swoop? The Array will be the same for both only the root may change So I have 2 separate menu Items. I'd like to make it one but my nesting fails...

         8)
     clear
     echo ""
     #Create Array
     echo "Please enter your Working Directory ROOT (Just the word: For ~/OurROM/ type: OurROM)"
     read root
     echo "Please Enter the Subequent Directories to the location of your git directory"
     echo "Again, just the words: For ~/OurROM/frameworks/base type: frameworks base"
     # -a makes read command to read into an array
     read -a gitdir
     # get number of elements in the array
     elements=${#gitdir[@]}
     fullPath="~/${root}"
     index=0

while [ "$index" -lt "$elements" ] ; do
         # append values from $gitdir until you are done
    fullPath="${fullPath}/${gitdir[$index]}"
    (( index++ ))
done 
     ;;
     9)
     clear
     echo ""
     #Create Array
     echo "Please enter your remote github.com repository ROOT (Just the word: For https://github.com/OurROM/ type: OurROM)"
     read repo
     echo "Please Enter the Subequent Directories to the location of your git repository"
     echo "Again, just the words: For https://github.com/OurROM/frameworks/base type: frameworks base"
     # -a makes read command to read into an array
     read -a repodir
     # get number of elements in the array
     elements=${#repodir[@]}
     repoSave="${repo}/"
     index=0

while [ "$index" -lt "$elements" ] ; do
         # append values from $gitdir until you are done
    repoSave="${repoSave}${repodir[$index]}_"
    (( index++ ))
    repoPath=${repoSave%?}
done 
     ;;

I've tried to nest like this but it Truncates the First output to 1 array value:

     8)
     clear
     echo ""
     #Create Array
     echo "Please enter your Working Directory ROOT (Just the word: For ~/OurROM/ type: OurROM)"
     read root
     echo "Please enter your remote github.com repository ROOT (Just the word: For https://github.com/OurROM/ type: OurROM)"
     read repo     
     echo "Please Enter the Subequent Directories to the location of your git directory"
     echo "Again, just the words: For ~/OurROM/frameworks/base type: frameworks base"
     # -a makes read command to read into an array
     read -a gitdir
     # get number of elements in the array
     elements=${#gitdir[@]}
     fullPath="~/${root}"
     repoSave="${repo}/"     
     index=0

while [ "$index" -lt "$elements" ] ; do
         # append values from $gitdir until you are done
    fullPath="${fullPath}/${gitdir[$index]}"
    (( index++ ))

    index=0
    while [ "$index" -lt "$elements" ] ; do
        repoSave="${repoSave}${gitdir[$index]}_"
        (( index++ ))
        repoPath=${repoSave%?}
    done
done 
     ;;

Where did I go Wrong?

Answer 1

This answer, a work in progress; Your code

while [ "$index" -lt "$elements" ]
do 
 ?????????
 echo "Your Directory is ~/$root/${gitdir[0]}/${gitdir[1]}/${colours[2]}" 
done

becomes

fullPath="/${root}/"
index=1
while [ "$index" -lt "$elements" ] ; do 
    # append values from $gitdir until you are done
    fullPath="${fullPath}/${gitdir[$index]}"
    (( index++ ))
done 
# not sure how colours got introduced to this but same idea  
fullPath="${fullPath}/${colours[2]}"

echo "Your Directory is ~/${fullPath}" 

use of (( index++ )) implies using a version of bash, ksh, zsh (maybe others) that support arithmetic evaluations.

---

That said, it's not clear what your input into gitdir[@] will be and why you need to "count" the levels. Why not just accept user input as arguments, document the order of arguments and then enforce that by testing inputs before starting actual processing. Something like ...

 case $# in 
    [012] ) echo "usage: myScript root path colour [colour2 ...]" 1>&2 ; exit 1 ;;
    3 )
      # minimal number of args acceptable
      root="$1"
      localPath="$2"
      colour[1]="$3"
    ;;
    * )
      # assume more than 1 colour passed
      root="$1"
      localPath="$2"
      shift 2 ; cntr=1
      while (( $# > 1 )) ; do
        colour[$cntr]="$1"
        shift
        ((cntr++))
      done
   ;;
   esac

   # you get the idea. recall that a leading '/' on localPath will mess things up
   # build a trap for that like
   case "${localPath}" in
       [/]* ) echo "bad input for localPath, no leading '/' char please" 1>&2 ;;
   esac

   # validate inputs
   if [[ ! -d "${root}" ]] ; then
      echo "can't find rootdir=${root}" 1>&2
      cleanInput=false
   fi
   if ! cd "${root}" ; then
      echo "can't find rootdir=${root}" 1>&2
      exit 1
   fi

   # we are in root now, make sure that localPath is real
   if [[ ! -d "${localPath}" ]] ; then
      echo "can't find localPath=${localPath}" 1>&2
      cleanInput=false
   fi

   if ! ${cleanInput:-true} ; then
      echo "found errors, please try again"
      exit 1
   fi

   # now do your real stuff.
   echo "about to use args passed in root=${root}, localPath=${localPath} colours=${colours[@]} ...."

These are meant to be illustrative about various techniques you can use and NOT a perfect solution to your problem (as I'm still unclear if you have a very specific need or if you're just learning about various ways to solve your problem). Now you have a tool kit of several techniques that should help you organize and test your user input before starting the main processing of your script.

Also per other comments of others, you may find the shell select "framework" valuable, so search here for [bash] select. I've seen numerous good solutions that use that for offering users a list of possible actions.

IHTH.