#!/bin/bash 

dirname="../diff_$(git describe | tr -d '\n')_$(date +%Y%m%d_%H%M)"
mkdir -p ${dirname}/old/  ${dirname}/new/

IFS="
"
for f in $(git status -s)
do
    if [ $(echo $f | awk '{ print $1 }') != "??" ];then        
        git archive HEAD $(echo $f | awk '{ print $2 }') | tar -xf - -C ${dirname}/old/
    fi            
    
    if [ $(echo $f | awk '{ print $1 }') != "D" ];then        
        cp -af --parents $(echo $f | awk '{ print $2 }') ${dirname}/new/
    fi
done