git-bpf

#!/bin/sh
#
# git-bpf -- A collection of Git extensions to provide high-level
# repository operations for Git Branch Per Feature (BPF) workflow.
#
# This project is an implementation of the Git BPF workflow
# described by Adam Dymitruk:
# 	http://dymitruk.com/blog/2012/02/05/branch-per-feature/
# And its source code is wildly inspired by gitflow tools source code:
#    https://github.com/nvie/gitflow
# 
# Feel free to contribute to this project at:
#    https://github.com/cdue/gitbpf
#
# Copyright (c) 2015 Cédric Dué
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE
#

# set this to workaround expr problems in shFlags on freebsd
if uname -s | egrep -iq 'bsd'; then export EXPR_COMPAT=1; fi

# enable debug mode
if [ "$DEBUG" = "yes" ]; then
	set -x
fi

# The sed expression here replaces all backslashes by forward slashes.
# This helps our Windows users, while not bothering our Unix users.
export GITBPF_DIR=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")

usage() {
	echo "usage: git bpf <subcommand>"
	echo
	echo "Available subcommands are:"
	echo "   init      Initialize a new git repo with support for the BPF branching model."
	echo "   feature   Manage your feature branches."
	echo "   release   Manage your release branches."
	echo "   hotfix    Manage your hotfix branches."
	echo "   version   Shows version information."
	echo "   rerere    Manage rerere sharing (for conflicts auto-resolution)."
	echo
	echo "Try 'git bpf <subcommand> help' for details."
}

main() {
	if [ $# -lt 1 ]; then
		usage
		exit 1
	fi

	# load common functionality
	. "$GITBPF_DIR/gitbpf-common"

	# This environmental variable fixes non-POSIX getopt style argument
	# parsing, effectively breaking git-bpf subcommand parsing on several
	# Linux platforms.
	export POSIXLY_CORRECT=1

	# use the shFlags project to parse the command line arguments
	. "$GITBPF_DIR/gitbpf-shFlags"
	FLAGS_PARENT="git bpf"

	# allow user to request git action logging
	DEFINE_boolean show_commands false 'show actions taken (git commands)' g

	# do actual parsing
	FLAGS "$@" || exit $?
	eval set -- "${FLAGS_ARGV}"

	# sanity checks
	SUBCOMMAND="$1"; shift

	if [ ! -e "$GITBPF_DIR/git-bpf-$SUBCOMMAND" ]; then
		usage
		exit 1
	fi

	# run command
	. "$GITBPF_DIR/git-bpf-$SUBCOMMAND"
	FLAGS_PARENT="git bpf $SUBCOMMAND"

	# test if the first argument is a flag (i.e. starts with '-')
	# in that case, we interpret this arg as a flag for the default
	# command
	SUBACTION="default"
	if [ "$1" != "" ] && { ! echo "$1" | grep -q "^-"; } then
		SUBACTION="$1"; shift
	fi
	if ! type "cmd_$SUBACTION" >/dev/null 2>&1; then
		warn "Unknown subcommand: '$SUBACTION'"
		usage
		exit 1
	fi

	# run the specified action
  if [ $SUBACTION != "help" ] && [ $SUBCOMMAND != "init" ] ; then
    init
  fi
  cmd_$SUBACTION "$@"
}

main "$@"