'pre-push' script that prompt the push to user andthen call another script which exist at %rel_path/%script_name(mostly lays at $SRCROOT)

pre-push_call-another

#!/bin/bash

############################
# 'pre-push' script that prompt the push to user and
# then call another script which exist at %rel_path/%script_name
# (mostly lays at $SRCROOT)

#set your script
script_name="another.sh"
#relative path
rel_path="../.."

#####
# call_another: calls another script specified with path
# @param1: path of the script 
# @param2: name of the script
#
function call_another {
    current_dir=$(pwd)
    script_dir=$(dirname $0)

    if [ $script_dir = '.' ]
    then
    script_dir="$current_dir"
    fi

    cd $script_dir
    cd $1

    call_path="$PWD/$2"
    echo calling script: $script_name

    sh $call_path
}

#### 
# http://blog.ittybittyapps.com/blog/2013/09/03/git-pre-push/
# have_commits: returns '0' if current branch have commits
#
function have_commits {
    commits=`git log @{upstream}..`
    if [ -z "$commits" ] 
    then
        echo "No commits available!"
        return 1
    else
        return 0
    fi
}

#### 
# http://blog.ittybittyapps.com/blog/2013/09/03/git-pre-push/
# can_push: returns '0' if current branch is pushable
#
function can_push {
    master_branch='master'
    dev_branch='develop'
    current_branch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')

    if [[ $current_branch = $master_branch || $current_branch = $dev_branch ]]
    then
        echo "Pushing on branch: $current_branch"
        return 0
    else
        echo "Can't push on branch: $current_branch"
        return 1
    fi
}

echo "#################"
echo "%pre-push script%"
msg="You're about to push? [Yy]:"

#prompt
read -p "$msg" -n 1 -r < /dev/tty
echo

if [[ $REPLY =~ ^[Yy]$ ]]
then
    can_push
    if [[ $? = 0 ]]
    then
        have_commits
        if [[ $? = 0 ]]
        then
            ### do stuffs
            call_another $rel_path $script_name

            echo "*** push executed ***"
            exit 0 # push will execute
        fi
    fi
fi
echo "*** push failed ***"
exit 1 # push will not execute