Python code coverage for Mac/IDLE/IDLE.app/Contents/Resources/idlemain.py

#	count	content
1	n/a	"""
2	n/a	Bootstrap script for IDLE as an application bundle.
3	n/a	"""
4	n/a	import sys, os
5	n/a
6	n/a	# Change the current directory the user's home directory, that way we'll get
7	n/a	# a more useful default location in the open/save dialogs.
8	n/a	os.chdir(os.path.expanduser('~/Documents'))
9	n/a
10	n/a
11	n/a	# Make sure sys.executable points to the python interpreter inside the
12	n/a	# framework, instead of at the helper executable inside the application
13	n/a	# bundle (the latter works, but doesn't allow access to the window server)
14	n/a	#
15	n/a	# .../IDLE.app/
16	n/a	# Contents/
17	n/a	# MacOS/
18	n/a	# IDLE (a python script)
19	n/a	# Python{-32} (symlink)
20	n/a	# Resources/
21	n/a	# idlemain.py (this module)
22	n/a	# ...
23	n/a	#
24	n/a	# ../IDLE.app/Contents/MacOS/Python{-32} is symlinked to
25	n/a	# ..Library/Frameworks/Python.framework/Versions/m.n
26	n/a	# /Resources/Python.app/Contents/MacOS/Python{-32}
27	n/a	# which is the Python interpreter executable
28	n/a	#
29	n/a	# The flow of control is as follows:
30	n/a	# 1. IDLE.app is launched which starts python running the IDLE script
31	n/a	# 2. IDLE script exports
32	n/a	# PYTHONEXECUTABLE = .../IDLE.app/Contents/MacOS/Python{-32}
33	n/a	# (the symlink to the framework python)
34	n/a	# 3. IDLE script alters sys.argv and uses os.execve to replace itself with
35	n/a	# idlemain.py running under the symlinked python.
36	n/a	# This is the magic step.
37	n/a	# 4. During interpreter initialization, because PYTHONEXECUTABLE is defined,
38	n/a	# sys.executable may get set to an unuseful value.
39	n/a	#
40	n/a	# (Note that the IDLE script and the setting of PYTHONEXECUTABLE is
41	n/a	# generated automatically by bundlebuilder in the Python 2.x build.
42	n/a	# Also, IDLE invoked via command line, i.e. bin/idle, bypasses all of
43	n/a	# this.)
44	n/a	#
45	n/a	# Now fix up the execution environment before importing idlelib.
46	n/a
47	n/a	# Reset sys.executable to its normal value, the actual path of
48	n/a	# the interpreter in the framework, by following the symlink
49	n/a	# exported in PYTHONEXECUTABLE.
50	n/a	pyex = os.environ['PYTHONEXECUTABLE']
51	n/a	sys.executable = os.path.join(sys.prefix, 'bin', 'python%d.%d'%(sys.version_info[:2]))
52	n/a
53	n/a	# Remove any sys.path entries for the Resources dir in the IDLE.app bundle.
54	n/a	p = pyex.partition('.app')
55	n/a	if p[2].startswith('/Contents/MacOS/Python'):
56	n/a	sys.path = [value for value in sys.path if
57	n/a	value.partition('.app') != (p[0], p[1], '/Contents/Resources')]
58	n/a
59	n/a	# Unexport PYTHONEXECUTABLE so that the other Python processes started
60	n/a	# by IDLE have a normal sys.executable.
61	n/a	del os.environ['PYTHONEXECUTABLE']
62	n/a
63	n/a	# Look for the -psn argument that the launcher adds and remove it, it will
64	n/a	# only confuse the IDLE startup code.
65	n/a	for idx, value in enumerate(sys.argv):
66	n/a	if value.startswith('-psn_'):
67	n/a	del sys.argv[idx]
68	n/a	break
69	n/a
70	n/a	# Now it is safe to import idlelib.
71	n/a	from idlelib.pyshell import main
72	n/a	if __name__ == '__main__':
73	n/a	main()