Staging
v0.5.1
v0.5.1
Revision a12d0ccfbe189ba7f3ed99cb1feac69aa03d7fe0 authored by Barry Warsaw on 10 April 2012, 14:59:35 UTC, committed by Barry Warsaw on 10 April 2012, 14:59:35 UTC
1 parent 75076b4
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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