#!/usr/bin/env bash

# If on a branch other than master, returns the number of commits made off of master
# If on master, returns 0

set -e

master_tag=`git rev-parse --abbrev-ref HEAD`

if [ "$master_tag" == "master" ]; then
    echo "0"
else
    last_commit=`git rev-parse HEAD`
    revision=`git rev-list master..$last_commit | wc -l`
    echo $revision
fi