git splay

git-splay

#!/bin/bash

command='/usr/bin/env git'
wd=$PWD
parallel=1
quiet=1

function usage() {
	echo "git splay [-p] <directory> <git command>"
	echo ""
	echo "Runs the given git command under each git repository found by recursively searching the specified directory."
	echo ""
	echo "Options:"
	echo "    --parallel (-p):    run the command in parallel"
	echo "    --quiet    (-q):    don't print the subdirectory headings between commands"
}

function process() {
	quiet=$1
	i=$2
	command=$3
	subcommand=$4
	wd=$5

	if [[ $quiet -eq 1 ]]; then
		echo "$i:"
	fi

	cd "$i"
	$command $subcommand
	cd "$wd"

	if [[ $quiet -eq 1 ]]; then
		echo ""
	fi
}

while true; do
	case $1 in
		-p|--parallel)
			parallel=0
			shift
			;;
		-q|--quiet)
			quiet=0
			shift
			;;
		-h|--help)
			usage
			exit 0
			;;
		*)
			if [[ ! -z "$dir" ]]; then
				break;
			fi

			dir=$1
			shift
			;;
	esac
done

subcommand="$@"

while IFS= read -r -u3 -d $'\0' i; do
	i=`dirname "$i"`

	if [[ $parallel -eq 0 ]]; then
		(
			process "$quiet" "$i" "$command" "$subcommand" "$wd"
		) &
	else
		process "$quiet" "$i" "$command" "$subcommand" "$wd"
	fi
done 3< <(find "$dir" -type d -name '.git' -print0)

if [[ $parallel -eq 0 ]]; then
	wait
fi