git-hf-upgrade

#
# HubFlow - a fork of the git-flow tools to apply Vincent Driessen's
# branching model to working with GitHub
#
# Original blog post presenting this model is found at:
#    http://nvie.com/git-model
#
# The HubFlow documentation is found at:
#    http://datasift.github.com/gitflow/
#
# Feel free to contribute to this project at:
#    http://github.com/datasift/gitflow
#
# Copyright 2010 Vincent Driessen. All rights reserved.
# Copyright 2012 MediaSift Ltd. All rights reserved.
#
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#    1. Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#
#    2. 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.
#
# THIS SOFTWARE IS PROVIDED BY VINCENT DRIESSEN ``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 VINCENT DRIESSEN 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.
#
# The views and conclusions contained in the software and documentation are
# those of the authors and should not be interpreted as representing official
# policies, either expressed or implied, of Vincent Driessen.
#

usage() {
	echo "usage: git hf upgrade"
}

cmd_default() {
	cmd_upgrade "$@"
}

cmd_help() {
	usage
	exit 0
}

cmd_upgrade() {
	DEFINE_boolean check false "check for upgrade, but do not upgrade" c
	# is there a new version available?
	if ! hubflow_has_new_version_available > /dev/null ; then
		die "You are already running the latest version"
	elif flag check ; then
		die "A newer version of the HubFlow tools is available"
	fi

	# make sure we have permissions
	if [ `id -u` != 0 ] ; then
		die "Not running as root (try using sudo?)"
	fi

	# make sure there isn't already a gitflow folder here
	if [ -e gitflow ] ; then
		die "Cannot clone the HubFlow repo; there's already a folder called 'gitflow' in your current working directory"
	fi

	git clone --recursive $HUBFLOW_REPO || die "Unable to clone the HubFlow repo"
	cd gitflow || die "Could not find the gitflow repo we've just cloned"
	./install.sh || die "Failed to install gitflow"
	cd ..
	rm -rf ./gitflow || die "Unable to remove the gitflow repo we've just cloned"

	echo
	echo "Summary of actions:"
	echo "- A new version of the HubFlow tools has been installed"
	echo
}