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authorGeorg Brandl <georg@python.org>2007-08-15 14:28:22 (GMT)
committerGeorg Brandl <georg@python.org>2007-08-15 14:28:22 (GMT)
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+
+:mod:`dircache` --- Cached directory listings
+=============================================
+
+.. module:: dircache
+ :synopsis: Return directory listing, with cache mechanism.
+.. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
+
+
+The :mod:`dircache` module defines a function for reading directory listing
+using a cache, and cache invalidation using the *mtime* of the directory.
+Additionally, it defines a function to annotate directories by appending a
+slash.
+
+The :mod:`dircache` module defines the following functions:
+
+
+.. function:: reset()
+
+ Resets the directory cache.
+
+
+.. function:: listdir(path)
+
+ Return a directory listing of *path*, as gotten from :func:`os.listdir`. Note
+ that unless *path* changes, further call to :func:`listdir` will not re-read the
+ directory structure.
+
+ Note that the list returned should be regarded as read-only. (Perhaps a future
+ version should change it to return a tuple?)
+
+
+.. function:: opendir(path)
+
+ Same as :func:`listdir`. Defined for backwards compatibility.
+
+
+.. function:: annotate(head, list)
+
+ Assume *list* is a list of paths relative to *head*, and append, in place, a
+ ``'/'`` to each path which points to a directory.
+
+::
+
+ >>> import dircache
+ >>> a = dircache.listdir('/')
+ >>> a = a[:] # Copy the return value so we can change 'a'
+ >>> a
+ ['bin', 'boot', 'cdrom', 'dev', 'etc', 'floppy', 'home', 'initrd', 'lib', 'lost+
+ found', 'mnt', 'proc', 'root', 'sbin', 'tmp', 'usr', 'var', 'vmlinuz']
+ >>> dircache.annotate('/', a)
+ >>> a
+ ['bin/', 'boot/', 'cdrom/', 'dev/', 'etc/', 'floppy/', 'home/', 'initrd/', 'lib/
+ ', 'lost+found/', 'mnt/', 'proc/', 'root/', 'sbin/', 'tmp/', 'usr/', 'var/', 'vm
+ linuz']
+