#!/bin/bash
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Usage:
#   revert_image.sh [image_to_revert]
#
# This assumes the image has been updated by update_image.sh.
usage()
{
  cat <<EOF

usage:
   revert_image.sh [image_to_revert]
EOF
}

if [[ $# < 1 ]]; then
   echo "Not enough arguments supplied."
   usage
   exit 1
fi

IMAGE=$(readlink -f "$1")
IMAGE_DIR=$(dirname "$IMAGE")

if [[ -z "$IMAGE" ]]; then
   echo "Missing required argument 'image_to_revert'"
   usage
   exit 1
fi

cd "$IMAGE_DIR"

if [[ ! -d "./orig_partitions" ]]; then
   echo "Could not find original partitions."
   exit 1
fi

cp -f ./orig_partitions/* ./

./pack_partitions.sh "$IMAGE"
rm -rf ./orig_partitions