Staging
v0.5.1
https://github.com/python/cpython
Revision 8c996ef45859108faf4fec8773f7810eb5782282 authored by Senthil Kumaran on 28 June 2010, 17:07:40 UTC, committed by Senthil Kumaran on 28 June 2010, 17:07:40 UTC
1 parent d6a8e6d
Raw File
Tip revision: 8c996ef45859108faf4fec8773f7810eb5782282 authored by Senthil Kumaran on 28 June 2010, 17:07:40 UTC
Documentation correction. urllib2.urlopen.info returns a mimetools.Message instance not HTTPMessage object.
Tip revision: 8c996ef
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] + '/'
back to top