Fetch and merge all repositories in a folder.

git-pullall.sh

#!/bin/bash

function header() {
	printf "\e[0;36m$1\e[0m\n"
}

function error() {
	printf "  \e[1;31m!!! $1\e[0m\n"
}

function warning() {
	printf "  \e[1;33m* $1\e[0m\n"
}

function colorize_yellow() {
	printf "\e[1;33m"
}

function colorize_reset() {
	printf "\e[0m\n"
}

function notice() {
	printf "  \e[1;32m* $1\e[0m\n"
}

function is_git_repository() {
	return $([ -d .git ])
}

function local_ref() {
	echo $(git show-ref | grep refs/heads/master | cut -f1 -d' ')
}

function remote_ref() {
	echo $(git ls-remote 2>/dev/null | grep refs/heads/master | cut -f1)
}

function has_untracked_files() {
	git status -uall | grep "Untracked files" 2>&1>/dev/null
	return $?
}

function has_uncommitted_files() {
	git status -uall | grep "Changes to be committed" 2>&1>/dev/null
	return $?
}

function has_unstaged_files() {
	git status -uall | grep "Changes not staged for commit" 2>&1>/dev/null
	return $?
}

function needs_push() {
	git log origin/master..master | grep "commit" 2>&1>/dev/null
	return $?
}

function can_fetch() {
	local retval=0
	is_git_repository
	if [ $? -eq 1 ] ; then error "Is not a git repository" ; return 2 ; fi

	#echo -n "  * Checking to see if it is ahead of the remote... "
	needs_push
	if [ $? -eq 0 ] ; then error "Is ahead of remote" ; retval=1 ; fi

	#echo -n "  * Checking to see if it has uncommitted files... "
	has_uncommitted_files
	if [ $? -eq 0  ] ; then error "Has uncommitted files" ; retval=1 ; fi

	#echo -n "  * Checking to see if it has untracked files... "
	has_untracked_files
	if [ $? -eq 0  ] ; then error "Has untracked files" ; retval=1 ; fi

	has_unstaged_files
	if [ $? -eq 0  ] ; then error "Has unstaged files" ; retval=1 ; fi

	return $retval
}

cd $HOME/git
for finddir in $(find . -type d -maxdepth 1 -mindepth 1) ; do
	dir=$(basename $finddir)
	pushd $dir > /dev/null
	# "$(local_ref)" == "$(remote_ref)"
	header "Checking the $dir directory"
	
	can_fetch
	retval=$?
	if [[ $retval == 1 ]] ; then
		error "Found local changes... Please stash/commit/push."
	elif [[ $retval == 2 ]] ; then
		error "Please run 'git init' to initialize the repository."
	else
		if [ "$(local_ref)" != "$(remote_ref)" ] ; then
			warning "The $dir directory does not match the remote..."
			warning "Trying to fetch and merge."
			colorize_yellow
			git fetch origin
			git merge origin/master
			colorize_reset
		else
			notice "OK"
		fi
	fi
	popd > /dev/null
done