annotate MoinMoin/util/pysupport.py @ 6133:a6283e189869 default tip

fixup: remove nonexisting passlib.utils._blowfish this was removed by the passlib 1.7.1 upgrade.
author Thomas Waldmann <tw AT waldmann-edv DOT de>
date Thu, 01 Jun 2017 18:10:19 +0200
parents 8fea1d0ca8ac
children
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1 # -*- coding: iso-8859-1 -*-
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2 """
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3 MoinMoin - Supporting function for Python magic
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4
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5 @copyright: 2002 Juergen Hermann <jh@web.de>
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6 @license: GNU GPL, see COPYING for details.
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7 """
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8
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9 #############################################################################
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10 ### Module import / Plugins
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11 #############################################################################
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12
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13 def isImportable(module):
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14 """ Check whether a certain module is available.
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15 """
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16 try:
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17 __import__(module)
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18 return 1
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19 except ImportError:
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20 return 0
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22
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23 def getPluginModules(packagedir):
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24 """
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25 Return a list of plugin modules for a given plugin package dir,
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26 omitting any that start with an underscore.
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27 """
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28 import os, re
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29
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30 pyre = re.compile(r"^([^_].*)\.py$")
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31 dirlist = os.listdir(packagedir)
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32 matches = [pyre.match(fn) for fn in dirlist]
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33 modules = [match.group(1) for match in matches if match]
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34
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35 modules.sort()
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36 return modules
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38
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39 def getPackageModules(packagefile):
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40 """ Return a list of modules for a package, omitting any modules
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41 starting with an underscore.
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42 """
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43 import os, re
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44
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45 packagedir = os.path.dirname(packagefile)
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47 in_plugin_dir = lambda dir, ops=os.path.split: ops(ops(dir)[0])[1] == "plugin"
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48
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49 moinmodule = __import__('MoinMoin')
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51 # Is it in a .zip file?
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52 if not in_plugin_dir(packagedir) and hasattr(moinmodule, '__loader__'):
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53 pyre = re.compile(r"^([^_].*)\.py(?:c|o)$")
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54 zipfiles = moinmodule.__loader__._files
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55 dirlist = [entry[0].replace(r'/', '\\').split('\\')[-1]
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56 for entry in zipfiles.values() if packagedir in entry[0]]
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57 else:
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58 pyre = re.compile(r"^([^_].*)\.py$")
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59 dirlist = os.listdir(packagedir)
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60
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61 matches = [pyre.match(fn) for fn in dirlist]
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62 modules = [match.group(1) for match in matches if match]
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63
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64 modules.sort()
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65 return modules
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66
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68 def importName(modulename, name):
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69 """ Import name dynamically from module
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70
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71 Used to do dynamic import of modules and names that you know their
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72 names only in runtime.
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74 Any error raised here must be handled by the caller.
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75
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76 @param modulename: full qualified mudule name, e.g. x.y.z
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77 @param name: name to import from modulename
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78 @rtype: any object
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79 @return: name from module
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80 """
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81 module = __import__(modulename, globals(), {}, [name])
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82 return getattr(module, name)
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83
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84
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85 def makeThreadSafe(function, lock=None):
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86 """ Call with a function you want to make thread safe
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87
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88 Call without lock to make the function thread safe using one lock per
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89 function. Call with existing lock object if you want to make several
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90 functions use same lock, e.g. all functions that change same data
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91 structure.
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92
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93 @param function: function to make thread safe
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94 @param lock: threading.Lock instance or None
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95 @rtype: function
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96 @return: function decorated with locking
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97 """
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98 if lock is None:
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99 import threading
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100 lock = threading.Lock()
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101
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102 def decorated(*args, **kw):
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103 lock.acquire()
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104 try:
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105 return function(*args, **kw)
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106 finally:
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107 lock.release()
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108
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109 return decorated