Change your macOS bash prompt to include Xcode version and git branch + status

.bash_profile

#
# Author:  Marc Palmer 
# Twitter: https://twitter.com/marcpalmerdev
# Blog:    https://marcpalmer.net
# 
# This is a .bash_profile file that you can write to your home directory to give
# you a custom shell prompt that will include the git branch and status of your
# current working dir as well as the current Xcode version.
#
# This is really handy when you're running multiple Xcode versions on your machine and have to run
# command line builds such as carthage, fastlane or cocoapods which can fail or do the
# wrong thing and waste a lot of time if xcode-select is not using the version of Xcode tools you expect.

#
# These git parts were verbatim copied from http://ezprompt.net
#

# get current branch in git repo
function parse_git_branch() {
	BRANCH=`git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'`
	if [ ! "${BRANCH}" == "" ]
	then
		STAT=`parse_git_dirty`
		echo "[${BRANCH}${STAT}]"
	else
		echo ""
	fi
}

# get current status of git repo
function parse_git_dirty {
	status=`git status 2>&1 | tee`
	dirty=`echo -n "${status}" 2> /dev/null | grep "modified:" &> /dev/null; echo "$?"`
	untracked=`echo -n "${status}" 2> /dev/null | grep "Untracked files" &> /dev/null; echo "$?"`
	ahead=`echo -n "${status}" 2> /dev/null | grep "Your branch is ahead of" &> /dev/null; echo "$?"`
	newfile=`echo -n "${status}" 2> /dev/null | grep "new file:" &> /dev/null; echo "$?"`
	renamed=`echo -n "${status}" 2> /dev/null | grep "renamed:" &> /dev/null; echo "$?"`
	deleted=`echo -n "${status}" 2> /dev/null | grep "deleted:" &> /dev/null; echo "$?"`
	bits=''
	if [ "${renamed}" == "0" ]; then
		bits=">${bits}"
	fi
	if [ "${ahead}" == "0" ]; then
		bits="*${bits}"
	fi
	if [ "${newfile}" == "0" ]; then
		bits="+${bits}"
	fi
	if [ "${untracked}" == "0" ]; then
		bits="?${bits}"
	fi
	if [ "${deleted}" == "0" ]; then
		bits="x${bits}"
	fi
	if [ "${dirty}" == "0" ]; then
		bits="!${bits}"
	fi
	if [ ! "${bits}" == "" ]; then
		echo " ${bits}"
	else
		echo ""
	fi
}

# Parse out version from xcodebuild's plist based on output of xcode-select
# Thanks to @danielpunkass for the performance improvement that avoids executing "xcodebuild -version"
function parse_xcode_version {
	echo `plutil -p \`xcode-select -p\`/../Info.plist | grep -e CFBundleShortVersionString | sed 's/[^0-9\.]*//g'`
}

# Set the prompt to include colored Xcode version and git status.
# We use a light blue bg and the hammer emoji to signal that the version information is about Xcode
# This sets the prompt to expand to "<host>:<working-dir> 🔨<xcode-version> [<git-info>]$ "
export PS1="\h:\W \[\033[46m\] 🔨\[\033[30m\]\`parse_xcode_version\` \[\033[00m\] \`parse_git_branch\`$ "