Staging
v0.8.1
v0.8.1
Revision cac8f585b12e2598783b7c570108eaa8d2262c4c authored by Martin v. Löwis on 13 June 2008, 18:19:49 UTC, committed by Martin v. Löwis on 13 June 2008, 18:19:49 UTC
1 parent cc0f2b2
dircache.py
"""Read and cache directory listings.
The listdir() routine returns a sorted list of the files in a directory,
using a cache to avoid reading the directory more often than necessary.
The annotate() routine appends slashes to directories."""
from warnings import warnpy3k
warnpy3k("the dircache module has been removed in Python 3.0", stacklevel=2)
del warnpy3k
import os
__all__ = ["listdir", "opendir", "annotate", "reset"]
cache = {}
def reset():
"""Reset the cache completely."""
global cache
cache = {}
def listdir(path):
"""List directory contents, using cache."""
try:
cached_mtime, list = cache[path]
del cache[path]
except KeyError:
cached_mtime, list = -1, []
mtime = os.stat(path).st_mtime
if mtime != cached_mtime:
list = os.listdir(path)
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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