#!/bin/bash

patch() {
  local cmd=`which patch`
  local f=$1
  local f_patch=$2.patch
  local original=$f.original

  if [ ! -f "$original" ]
  then
    echo "Saving $f to $original ..."
    cp $f $original
  fi
  echo "Patching $f with $f_patch ..."
  if [ -f "$f_patch" ]
  then
    $cmd $f < $f_patch > /dev/null
  else
    echo "Warning: file $f_patch not found!"
  fi
}