roket

#!/bin/bash

if [ ! -d ./tmp ]; then
  echo "Change directory to project dir!"; 
  exit 1;
fi

maxcommits=15

function isNumber() {
  re='^[0-9]+$'
  if ! [[ $1 =~ $re ]] ; then
    return 0
  else
    return 1
  fi
  }

echo 'HEAD~x	INFORMATION'
echo '------	-----------'
echo '0	current working directory'
for i in $(seq 0 $[$maxcommits-1]); do
  commit=`git log --pretty=format:"%h - %ar%x09%an%x09%s" -n1 --skip=$i`
  echo "$[$i+1]	$commit"
  done

read -p "Select number HEAD~" -e headcount
isNumber $headcount

if [ "$?" == "0" ]; then
  echo "No number!"
  exit 1
  fi
  
dir="./tmp/patches/$headcount"

if [ -d "$dir" ]; then
  echo "Patch is already exits!"; 
  exit 1;
fi

git diff HEAD~$headcount --stat

read -p "Make patch? (yes/no)" -e confirm

if [ "$confirm" == 'yes' ]; then
  mkdir -p $dir || { echo "Can not create dir $dir"; exit 1; }
  cp --parents `git diff HEAD~$headcount --name-only` $dir
  echo "The patch was created in $dir"
  exit 0
else
  echo "Break"
  exit 1
fi