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https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 5cd975c67883215472cf76b9ca48133bc80f0646 authored by Guido van Rossum on 17 December 1998, 18:02:15 UTC, committed by Guido van Rossum on 17 December 1998, 18:02:15 UTC 
Patch by Chris Herborth:
 
BeOS headers live in various non-standard places;
luckily, there's an environment variable that lists them all.
1 parent fc4966b
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Tip revision: 5cd975c67883215472cf76b9ca48133bc80f0646 authored by Guido van Rossum on 17 December 1998, 18:02:15 UTC
Patch by Chris Herborth:
Tip revision: 5cd975c
dircache.py 
# Module 'dircache'
#
# Return a sorted list of the files in a directory, using a cache
# to avoid reading the directory more often than necessary.
# Also contains a subroutine to append slashes to directories.

import os

cache = {}

def listdir(path): # List directory contents, using cache
	try:
		cached_mtime, list = cache[path]
		del cache[path]
	except KeyError:
		cached_mtime, list = -1, []
	try:
		mtime = os.stat(path)[8]
	except os.error:
		return []
	if mtime <> cached_mtime:
		try:
			list = os.listdir(path)
		except os.error:
			return []
		list.sort()
	cache[path] = mtime, list
	return list

opendir = listdir # XXX backward compatibility

def annotate(head, list): # Add '/' suffixes to directories
	for i in range(len(list)):
		if os.path.isdir(os.path.join(head, list[i])):
			list[i] = list[i] + '/'
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