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Add inode checks to detect circular symbolic links (so that the

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Tools/idle/idlelib link doesn't cause an infinite loop -- aack!)
This commit is contained in:
Ka-Ping Yee 2001-04-13 13:53:07 +00:00
parent 59685c5193
commit eca15c1fb1
1 changed files with 7 additions and 3 deletions
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10
Lib/pydoc.py
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@ -1458,7 +1458,8 @@ class ModuleScanner(Scanner):
"""An interruptible scanner that searches module synopses."""
def __init__(self):
roots = map(lambda dir: (dir, ''), pathdirs())
Scanner.__init__(self, roots, self.submodules, self.ispackage)
Scanner.__init__(self, roots, self.submodules, self.isnewpackage)
self.inodes = map(lambda (dir, pkg): os.stat(dir)[1], roots)
def submodules(self, (dir, package)):
children = []
@ -1471,8 +1472,11 @@ class ModuleScanner(Scanner):
children.sort() # so that spam.py comes before spam.pyc or spam.pyo
return children
def ispackage(self, (dir, package)):
return ispackage(dir)
def isnewpackage(self, (dir, package)):
inode = os.stat(dir)[1] # detect circular symbolic links
if not (os.path.islink(dir) and inode in self.inodes):
self.inodes.append(inode)
return ispackage(dir)
def run(self, callback, key=None, completer=None):
if key: key = lower(key)