Lib/plat-mac/appletrawmain.py

   1 # Emulate sys.argv and run __main__.py or __main__.pyc in an environment that
   2 # is as close to "normal" as possible.
   3 #
   4 # This script is put into __rawmain__.pyc for applets that need argv
   5 # emulation, by BuildApplet and friends.
   6 #
   7 import argvemulator
   8 import os
   9 import sys
  10 import marshal
  11
  12 #
  13 # Make sure we have an argv[0], and make _dir point to the Resources
  14 # directory.
  15 #
  16 if not sys.argv or sys.argv[0][:1] == '-':
  17     # Insert our (guessed) name.
  18     _dir = os.path.split(sys.executable)[0] # removes "python"
  19     _dir = os.path.split(_dir)[0] # Removes "MacOS"
  20     _dir = os.path.join(_dir, 'Resources')
  21     sys.argv.insert(0, '__rawmain__')
  22 else:
  23     _dir = os.path.split(sys.argv[0])[0]
  24 #
  25 # Add the Resources directory to the path. This is where files installed
  26 # by BuildApplet.py with the --extra option show up, and if those files are
  27 # modules this sys.path modification is necessary to be able to import them.
  28 #
  29 sys.path.insert(0, _dir)
  30 #
  31 # Create sys.argv
  32 #
  33 argvemulator.ArgvCollector().mainloop()
  34 #
  35 # Find the real main program to run
  36 #
  37 __file__ = os.path.join(_dir, '__main__.py')
  38 if os.path.exists(__file__):
  39     #
  40     # Setup something resembling a normal environment and go.
  41     #
  42     sys.argv[0] = __file__
  43     del argvemulator, os, sys, _dir
  44     execfile(__file__)
  45 else:
  46     __file__ = os.path.join(_dir, '__main__.pyc')
  47     if os.path.exists(__file__):
  48         #
  49         # If we have only a .pyc file we read the code object from that
  50         #
  51         sys.argv[0] = __file__
  52         _fp = open(__file__, 'rb')
  53         _fp.read(8)
  54         __code__ = marshal.load(_fp)
  55         #
  56         # Again, we create an almost-normal environment (only __code__ is
  57         # funny) and go.
  58         #
  59         del argvemulator, os, sys, marshal, _dir, _fp
  60         exec __code__
  61     else:
  62         sys.stderr.write("%s: neither __main__.py nor __main__.pyc found\n"%sys.argv[0])
  63         sys.exit(1)