pyappvers.py

#!/usr/bin/env python

'''
This script returns the version of the specified Application

usage:
    ./pyappvers.py "VMware Fusion"

Documentation:
https://developer.apple.com/library/mac/documentation/CoreFoundation/Reference/CFPreferencesUtils/Reference/reference.html
'''

##############################################################################
# Copyright 2014 Joseph Chilcote
# 
#  Licensed under the Apache License, Version 2.0 (the "License"); you may not
#  use this file except in compliance with the License. You may obtain a copy
#  of the License at  
# 
#       http://www.apache.org/licenses/LICENSE-2.0
# 
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#  License for the specific language governing permissions and limitations
#  under the License.
##############################################################################

import os, sys, glob, re
from CoreFoundation import CFPreferencesCopyAppValue

DEBUG = False
app_list = []
app_list.extend(glob.glob('/Applications/' '*.app'))
app_list.extend(glob.glob('/Applications/*/' '*.app'))
app_list.extend(glob.glob('/Users/*/Applications/' '*.app'))

def usage():
    print 'Usage: ./pyappvers.py APPLICATION'

def debug(name, path, plist, version):
    print app_list
    print "Application name: %s" % name
    print 'Application path: %s' % path
    print 'Info.plist path: %s' % plist
    print 'Version: %s' % version

def main():
    app_path = ''
    if not len(sys.argv) == 2:
        usage()
        sys.exit(0)
    app_name = sys.argv[1] + '.app'
    for app in app_list:
        if app_name in app:
            app_path = app
    if not os.path.exists(app_path):
        print "Can't find that application!"
        sys.exit(0)
    plist = os.path.join(app_path, 'Contents/Info.plist')
    if not os.path.exists(plist):
        print "Can't find the Info.plist!"
        sys.exit(0)
    version = CFPreferencesCopyAppValue('CFBundleShortVersionString', plist)
    if not version:
        print "No version information found!"
        sys.exit(0)
    if not DEBUG:
        print version
        sys.exit(0)
    debug(app_name, app_path, plist, version)

if __name__ == "__main__":
    main()