wxPython/samples/ide/activegrid/util/objutils.py

   1 #----------------------------------------------------------------------------
   2 # Name:         objutils.py
   3 # Purpose:      Object Utilities
   4 #
   5 # Author:       Alan Mullendore
   6 #
   7 # Created:      5/10/05
   8 # CVS-ID:       $Id$
   9 # Copyright:    (c) 2004-2005 ActiveGrid, Inc.
  10 # License:      wxWindows License
  11 #----------------------------------------------------------------------------
  12
  13 import logging
  14 import traceback
  15 import sys
  16 import os
  17
  18 import xmlmarshaller
  19
  20 def defaultLoad(fileObject, knownTypes=None):
  21     xml = fileObject.read()
  22     loadedObject = xmlmarshaller.unmarshal(xml, knownTypes=knownTypes)
  23     if hasattr(fileObject, 'name'):
  24         loadedObject.fileName = os.path.abspath(fileObject.name)
  25     loadedObject.initialize()
  26     return loadedObject
  27
  28 def defaultSave(fileObject, objectToSave, knownTypes=None, withEncoding=1, encoding='utf-8'):
  29     xml = xmlmarshaller.marshal(objectToSave, prettyPrint=True, knownTypes=knownTypes, withEncoding=withEncoding, encoding=encoding)
  30     fileObject.write(xml)
  31     fileObject.flush()
  32
  33 def clone(objectToClone, knownTypes=None, encoding='utf-8'):
  34     xml = xmlmarshaller.marshal(objectToClone, prettyPrint=True, knownTypes=knownTypes, encoding=encoding)
  35     clonedObject = xmlmarshaller.unmarshal(xml, knownTypes=knownTypes)
  36     if hasattr(objectToClone, 'fileName'):
  37         clonedObject.fileName = objectToClone.fileName
  38     try:
  39         clonedObject.initialize()
  40     except AttributeError:
  41         pass
  42     return clonedObject
  43
  44 def classForName(className):
  45     pathList = className.split('.')
  46     moduleName = '.'.join(pathList[:-1])
  47     code = __import__(moduleName)
  48     for name in pathList[1:]:
  49         code = code.__dict__[name]
  50     return code
  51
  52 def hasattrignorecase(object, name):
  53     namelow = name.lower()
  54     for attr in dir(object):
  55         if attr.lower() == namelow:
  56             return True
  57     for attr in dir(object):
  58         if attr.lower() == '_' + namelow:
  59             return True
  60     return False
  61
  62 def setattrignorecase(object, name, value):
  63     namelow = name.lower()
  64     for attr in object.__dict__:
  65         if attr.lower() == namelow:
  66             object.__dict__[attr] = value
  67             return
  68     object.__dict__[name] = value
  69
  70 def getattrignorecase(object, name):
  71     namelow = name.lower()
  72     for attr in object.__dict__:
  73         if attr.lower() == namelow:
  74             return object.__dict__[attr]
  75     return object.__dict__[name]
  76
  77 def hasPropertyValue(obj, attr):
  78     hasProp = False
  79     try:
  80         prop = obj.__class__.__dict__[attr]
  81         if (isinstance(prop, property)):
  82             hasProp = hasattr(obj, attr)
  83             if (hasProp):
  84                 # It's a property and it has a value but sometimes we don't want it.
  85                 # If there is a _hasattr method execute it and the
  86                 # result will tell us whether to include this value
  87                 try:
  88                     hasProp = obj._hasattr(attr)
  89                 except:
  90                     pass
  91     except KeyError:
  92         pass
  93     return hasProp