#!/bin/sh

usage () {
	cat <<EOF>&2
Usage: ${0##*/} SOURCE DEST

Use rsync to mirror SOURCE to DEST while showing progress.
SOURCE does not need to be ending with a trailing slash. Only size is used for
comparison. File perms and dates are mirrored by default.

A dry-run is made by default.

Options:

  -p: Process.
  -s: Ignore dates when comparing files.

EOF
}

## We use archive mode '-a' which preserves perms and dates. On non-POSIX
## filesystems, you might want to skip this and preserve symlinks only by
## replacing -a with -lr.
flags="-a"
opt_dry="-n"
while getopts ":hps" opt; do
	case $opt in
	h)
		usage
		exit ;;
	p)
		opt_dry="" ;;
	s)
		flags="-lr"
		OPT_PROCESS=true ;;
	\?)
		usage
		exit 1 ;;
	esac
done

shift $(($OPTIND - 1))

[ $# -ne 2 ] && usage && exit 1
[ "$1" = "-h" ] && usage && exit
[ "$1" = "--" ] && shift

rsync $opt_dry -iv $flags --size-only --delete --exclude="/lost+found" --exclude="/.Trash*" --progress -- "$1"/ "$2"