code.delx.au - offlineimap/blob - offlineimap/head/offlineimap/localeval.py

   1 """Eval python code with global namespace of a python source file."""
   2
   3 # Copyright (C) 2002 John Goerzen
   4 # <jgoerzen@complete.org>
   5 #
   6 #    This program is free software; you can redistribute it and/or modify
   7 #    it under the terms of the GNU General Public License as published by
   8 #    the Free Software Foundation; version 2 of the License.
   9 #
  10 #    This program is distributed in the hope that it will be useful,
  11 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 #    GNU General Public License for more details.
  14 #
  15 #    You should have received a copy of the GNU General Public License
  16 #    along with this program; if not, write to the Free Software
  17 #    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18
  19 import imp, errno
  20
  21 class LocalEval:
  22     def __init__(self, path=None):
  23         self.namespace={}
  24
  25         if path is not None:
  26             file=open(path, 'r')
  27             module=imp.load_module(
  28                 '<none>',
  29                 file,
  30                 path,
  31                 ('', 'r', imp.PY_SOURCE))
  32             for attr in dir(module):
  33                 self.namespace[attr]=getattr(module, attr)
  34
  35     def eval(self, text, namespace=None):
  36         names = {}
  37         names.update(self.namespace)
  38         if namespace is not None:
  39             names.update(namespace)
  40         return eval(text, names)