Revision c251607d591ad8c0f117eb5e6118027c4ae1e8c6 authored by Benjamin Peterson on 08 May 2010, 17:08:17 UTC, committed by Benjamin Peterson on 08 May 2010, 17:08:17 UTC
1 parent 9c164af
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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