#!/usr/bin/env python3

from sys import argv
from subprocess import run, PIPE, DEVNULL
from os import path

srcimg = 'SourceForEmulator.dmg'

rsync_opts = [
	'--exclude', '.*',				# Down with dotfiles.
	'--exclude', srcimg,
	'--exclude', 'Desktop DB',
	'--exclude', 'Desktop DF',
	'--exclude', 'Desktop Folder',
	'--exclude', 'Trash',
	'--exclude', 'TheVolumeSettingsFolder',
	'--exclude', 'TheFindByContentFolder',
	'--recursive',
	'-tX',							# consider times and xattrs
	'--delete',						# may delete things on the vMac drive
	# '--itemize-changes',
]



cmdresult = run(['hdiutil', 'attach', '-nobrowse', srcimg], stdout=PIPE, check=True).stdout.decode('ascii')
mountpoint = next(x for x in cmdresult.split() if x.startswith('/') and not x.startswith('/dev'))

try:
	mountpoint = mountpoint.rstrip('/') # try to deal in clean paths

	run(['rsync', *rsync_opts, mountpoint+'/', './'], check=True)

finally:
	run(['hdiutil', 'detach', mountpoint], stdout=DEVNULL, check=True)