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
   8 from warnings import warnpy3k
   9 warnpy3k("In 3.x, the appletrawmain module is removed.", stacklevel=2)
  10
  11 import argvemulator
  12 import os
  13 import sys
  14 import marshal
  15
  16 #
  17 # Make sure we have an argv[0], and make _dir point to the Resources
  18 # directory.
  19 #
  20 if not sys.argv or sys.argv[0][:1] == '-':
  21     # Insert our (guessed) name.
  22     _dir = os.path.split(sys.executable)[0] # removes "python"
  23     _dir = os.path.split(_dir)[0] # Removes "MacOS"
  24     _dir = os.path.join(_dir, 'Resources')
  25     sys.argv.insert(0, '__rawmain__')
  26 else:
  27     _dir = os.path.split(sys.argv[0])[0]
  28 #
  29 # Add the Resources directory to the path. This is where files installed
  30 # by BuildApplet.py with the --extra option show up, and if those files are
  31 # modules this sys.path modification is necessary to be able to import them.
  32 #
  33 sys.path.insert(0, _dir)
  34 #
  35 # Create sys.argv
  36 #
  37 argvemulator.ArgvCollector().mainloop()
  38 #
  39 # Find the real main program to run
  40 #
  41 __file__ = os.path.join(_dir, '__main__.py')
  42 if os.path.exists(__file__):
  43     #
  44     # Setup something resembling a normal environment and go.
  45     #
  46     sys.argv[0] = __file__
  47     del argvemulator, os, sys, _dir
  48     execfile(__file__)
  49 else:
  50     __file__ = os.path.join(_dir, '__main__.pyc')
  51     if os.path.exists(__file__):
  52         #
  53         # If we have only a .pyc file we read the code object from that
  54         #
  55         sys.argv[0] = __file__
  56         _fp = open(__file__, 'rb')
  57         _fp.read(8)
  58         __code__ = marshal.load(_fp)
  59         #
  60         # Again, we create an almost-normal environment (only __code__ is
  61         # funny) and go.
  62         #
  63         del argvemulator, os, sys, marshal, _dir, _fp
  64         exec __code__
  65     else:
  66         sys.stderr.write("%s: neither __main__.py nor __main__.pyc found\n"%sys.argv[0])
  67         sys.exit(1)