Mercurial > moin > 1.9
view MoinMoin/util/pysupport.py @ 0:77665d8e2254
tag of nonpublic@localhost--archive/moin--enterprise--1.5--base-0
(automatically generated log message)
imported from: moin--main--1.5--base-0
author | Thomas Waldmann <tw-public@gmx.de> |
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date | Thu, 22 Sep 2005 15:09:50 +0000 |
parents | |
children | 54d5932d5a03 |
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# -*- coding: iso-8859-1 -*- """ MoinMoin - Supporting function for Python magic @copyright: 2002 by Jürgen Hermann <jh@web.de> @license: GNU GPL, see COPYING for details. """ ############################################################################# ### Module import / Plugins ############################################################################# import sys def isImportable(module): """ Check whether a certain module is available. """ try: __import__(module) return 1 except ImportError: return 0 def getPackageModules(packagefile): """ Return a list of modules for a package, omitting any modules starting with an underscore. """ import os, re packagedir = os.path.dirname(packagefile) in_plugin_dir = lambda dir, ops=os.path.split: ops(ops(dir)[0])[1] == "plugin" moinmodule = __import__('MoinMoin') # Is it in a .zip file? if not in_plugin_dir(packagedir) and hasattr(moinmodule, '__loader__'): pyre = re.compile(r"^([^_].*)\.py(?:c|o)$") zipfiles = moinmodule.__loader__._files dirlist = [file[0].replace(r'/', '\\').split('\\')[-1] for file in zipfiles.values() if packagedir in file[0]] else: pyre = re.compile(r"^([^_].*)\.py$") dirlist = os.listdir(packagedir) pyfiles = filter(None, map(pyre.match, dirlist)) modules = map(lambda x: x.group(1), pyfiles) modules.sort() return modules def importName(modulename, name): """ Import name dynamically from module Used to do dynamic import of modules and names that you know their names only in runtime. @param modulename: full qualified mudule name, e.g. x.y.z @param name: name to import from modulename @rtype: any object @return: name from module or None if there is no such name """ try: module = __import__(modulename, globals(), {}, [name]) return getattr(module, name, None) except ImportError: return None def makeThreadSafe(function, lock=None): """ Call with a function you want to make thread safe Call without lock to make the function thread safe using one lock per function. Call with existing lock object if you want to make several functions use same lock, e.g. all functions that change same data structure. @param function: function to make thread safe @param lock: threading.Lock instance or None @rtype: function @retrun: function decorated with locking """ if lock is None: import threading lock = threading.Lock() def decorated(*args, **kw): lock.acquire() try: return function(*args, **kw) finally: lock.release() return decorated