#!/bin/bash
# Copyright 2008, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#     * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


set -o nounset
set -o errexit

######################################################################
# Helper functions
######################################################################

ReadKey() {
  read
}

Banner() {
  echo "######################################################################"
  echo $*
  echo "######################################################################"
}

Download() {
  Banner "downloading $1"
  if which wget ; then
    wget $1 -O $2
  elif which curl ; then
    curl --url $1 -o $2
  else
    echo
    echo "Problem encountered"
    echo
    echo "Please install curl or wget and rerun this script"
    echo "or manually download $1 to $2"
    echo
    echo "press any key when done"
    ReadKey
  fi

  if [ ! -s $2 ] ; then
    echo "ERROR: could not find $2"
    exit -1
  fi
}


if [ $# -ne 2 ] ; then
  echo "usage: download.sh <url> <localfilename>"
  exit -1
fi



Download $1 $2