Clean all associated file types of a app bundle

cleanFTypeAssoc.py

#!/usr/bin/env python2.7

import plistlib
import os
import sys
import shutil
import subprocess

SUBDIR_PATH=os.path.sep.join(('Contents', 'Info.plist'))

class FileTypeCleaner(object):

	def __init__(self,pathOfFile):
		self.filepath = self.checkInfoPlistExistence(pathOfFile)
		if self.filepath is not None:
			try:
				self.plistdata = plistlib.readPlist(self.filepath)
			except:
				try:
					self.plistdata = plistlib.readPlistFromString(
						self.binary2xml(self.filepath))
				except:
					self.plistdata = None
		else:
			self.plistdata = None

	@staticmethod
	def checkInfoPlistExistence(pathOfFile):
		path=os.path.sep.join((pathOfFile, SUBDIR_PATH))
		if os.path.isfile(path):
			return path
		return None

	def checkInfoPlistHasTypeKey(self):
		if 'CFBundleDocumentTypes' not in self.plistdata or \
				self.plistdata['CFBundleDocumentTypes'] == []:
			return False
		return True

	def vacuumTypeKey(self):
		self.plistdata['CFBundleDocumentTypes'] = []
	
	@staticmethod
	def binary2xml(pathOfFile):
		commandline = 'plutil -convert xml1 -o - -- ' + pathOfFile
		run = subprocess.Popen(commandline, shell=True, stdout=subprocess.PIPE,stderr=subprocess.PIPE)
		plistString, dummy = run.communicate()
		if run.returncode == 0:
			return plistString
		return None


if __name__=='__main__':
	if len(sys.argv)==1:
		sys.stderr.write('Usage: cleanFTypeAssoc.py app1.app [app2.app ...]\n')
		sys.stderr.flush()
		raise SystemExit
	for f in sys.argv[1:]:
		p = FileTypeCleaner(f)
		if p.plistdata is not None:
			if p.checkInfoPlistHasTypeKey():
				p.vacuumTypeKey()
				shutil.move(p.filepath, p.filepath+'~')
				plistlib.writePlist(p.plistdata, p.filepath)