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/Lib/plat-mac/appletrawmain.py

http://unladen-swallow.googlecode.com/
Python | 67 lines | 32 code | 3 blank | 32 comment | 5 complexity | 552380f1e3f65dcc78f48c5bea729a58 MD5 | raw file
 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
 8from warnings import warnpy3k
 9warnpy3k("In 3.x, the appletrawmain module is removed.", stacklevel=2)
10
11import argvemulator
12import os
13import sys
14import marshal
15
16#
17# Make sure we have an argv[0], and make _dir point to the Resources
18# directory.
19#
20if 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__')
26else:
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#
33sys.path.insert(0, _dir)
34#
35# Create sys.argv
36#
37argvemulator.ArgvCollector().mainloop()
38#
39# Find the real main program to run
40#
41__file__ = os.path.join(_dir, '__main__.py')
42if 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__)
49else:
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)