Cheetah/DummyTransaction.py

   1 #!/usr/bin/env python
   2 # $Id: DummyTransaction.py,v 1.13 2005/11/13 01:12:13 tavis_rudd Exp $
   3
   4 """Provides dummy Transaction and Response classes is used by Cheetah in place
   5 of real Webware transactions when the Template obj is not used directly as a
   6 Webware servlet.
   7
   8 Meta-Data
   9 ==========
  10 Author: Tavis Rudd <tavis@damnsimple.com>
  11 Version: $Revision: 1.13 $
  12 Start Date: 2001/08/30
  13 Last Revision Date: $Date: 2005/11/13 01:12:13 $
  14 """
  15 __author__ = "Tavis Rudd <tavis@damnsimple.com>"
  16 __revision__ = "$Revision: 1.13 $"[11:-2]
  17
  18 def flush():
  19     pass
  20
  21 class DummyResponse:
  22
  23     """A dummy Response class is used by Cheetah in place of real Webware
  24     Response objects when the Template obj is not used directly as a Webware
  25     servlet.  """
  26
  27
  28     def __init__(self):
  29         self._outputChunks = outputChunks = []
  30         self.write = write = outputChunks.append
  31         def getvalue(outputChunks=outputChunks):
  32             return ''.join(outputChunks)
  33         self.getvalue = getvalue
  34
  35         def writeln(txt):
  36             write(txt)
  37             write('\n')
  38         self.writeln = writeln
  39         self.flush = flush
  40
  41     def writelines(self, *lines):
  42         ## not used
  43         [self.writeln(ln) for ln in lines]
  44
  45 class DummyTransaction:
  46
  47     """A dummy Transaction class is used by Cheetah in place of real Webware
  48     transactions when the Template obj is not used directly as a Webware
  49     servlet.
  50
  51     It only provides a response object and method.  All other methods and
  52     attributes make no sense in this context.
  53     """
  54
  55     def __init__(self, DummyResponse=DummyResponse):
  56         def response(resp=DummyResponse()):
  57             return resp
  58         self.response = response