write_pkg_info.py (1700B)
1 # Copyright 2016 The Chromium Authors 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import argparse 6 import os 7 import plist_util 8 import sys 9 10 # This script creates a PkgInfo file for an OS X .app bundle's plist. 11 # Usage: python write_pkg_info.py --plist Foo.app/Contents/Info.plist \ 12 # --output Foo.app/Contents/PkgInfo 13 14 15 def Main(): 16 parser = argparse.ArgumentParser( 17 description='A script to write PkgInfo files for .app bundles.') 18 parser.add_argument('--plist', 19 required=True, 20 help='Path to the Info.plist for the .app.') 21 parser.add_argument('--output', 22 required=True, 23 help='Path to the desired output file.') 24 args = parser.parse_args() 25 26 # Remove the output if it exists already. 27 try: 28 os.unlink(args.output) 29 except FileNotFoundError: 30 pass 31 32 plist = plist_util.LoadPList(args.plist) 33 package_type = plist['CFBundlePackageType'] 34 if package_type != 'APPL': 35 raise ValueError('Expected CFBundlePackageType to be %s, got %s' % \ 36 ('APPL', package_type)) 37 38 # The format of PkgInfo is eight characters, representing the bundle type 39 # and bundle signature, each four characters. If that is missing, four 40 # '?' characters are used instead. 41 signature_code = plist.get('CFBundleSignature', '????') 42 if len(signature_code) != 4: 43 raise ValueError('CFBundleSignature should be exactly four characters, ' + 44 'got %s' % signature_code) 45 46 with open(args.output, 'w') as fp: 47 fp.write('%s%s' % (package_type, signature_code)) 48 return 0 49 50 51 if __name__ == '__main__': 52 sys.exit(Main())