.bash git function

.bash_git.sh

#!/bin/bash

function reorient_usage() {

	e=$(printf "\e")
	RESET="$e[0m"
	RED="$e[1;37;41m"
	BOLD="$e[1m"
	UNBOLD="$e[21m"
	RED="$e[1;37;41m"
	YELLOW="$e[1;38;05;232;48;05;220m"
	GREEN="$e[1;37;42m"
	BLUE="$e[96m"

	PROGNAME="reorient"
	cat << EOF
${BLUE}Usage: $PROGNAME [-h] [-u|-r] [-s] -t"${RESET}

Example: $PROGNAME [-u|-r <remote>] [-s <source_branch>] -t <target_branch>

Reset secondary branch ( -t : target) to the main branch ( -s : source) on a specific remote ( -u or -r : remote name).

It will reset HEAD of the target branch to be the same as source branch.

${YELLOW} !! NOTE !! Use with caution as it forces and rewrites the target branch with --hard!!${RESET}

Options:
	-u | -r:
		(optional). The remote repo name.
		Defaults to origin
	-s :
		(optional). The source branch name. The branch that has the HEAD.
		Defaults to master
	-t :
		${RED}(required)${RESET}. The target branch name. The one that gets reset.
	-h :
		Show this help

EOF
}

function gireorient {

	RESET="\e[0m"
	BLUE="\e[96m"

	local OPTIND # Must be local to prevent other scripts

	# set initial values
	local vremote=origin
	local vsrc=master
	local vtarget=''
	local vtarget_flag=false

	# extract options and their arguments into variables.
	# : after an option means it requires a parameter.
	# example: -t hotfix
	while getopts "u:r:s:t:h" opt ; do
		case "$opt" in
		r | u )
			vremote="$OPTARG"
			;;
		s )
			vsrc="$OPTARG"
			;;
		t )
			vtarget_flag=true
			vtarget="$OPTARG"
			;;
		h )
			# echo the help file
			reorient_usage
			return 1
			;;
		\? )
			reorient_usage
			return 1
			;;
		: )
			reorient_usage
			return 1
			;;
		*)
			echo "Internal error!"
			reorient_usage
			return 1
			;;
		esac
	done

	if ! $vtarget_flag
	then
		echo "-t must be included" >&2
		reorient_usage
		return 1
	fi

	# Print the variables

	echo -e "${BLUE}Remote${RESET} = $vremote"
	echo -e "${BLUE}Source${RESET} = $vsrc"
	echo -e "${BLUE}Target${RESET} = $vtarget"

	git push "${vremote}" +"${vsrc}:${vtarget}" && git reset --hard "${vremote}"/"${vtarget}";
}