"""
Remembers the original posting dates of stories.

Requires a file in the server that is writable by the webserver. (Default file
is py['datadir']/DATES).

If your py['datadir'] is read only to the web server, you can create a
directory and make sure that it's writable by the webserver, e.g. 'chmod 777
directory' or using some other methods (mine runs pyblosxom in SuExec mode).

After doing so, change the self._file value in __init__() and you're game.

"""
__author__ = "Richard Chamberlain richard@sunsetandlabrea.com"
__version__ = "rememberdates.py,v 0.1 2004/08/26 11:52:00 richardc"

import os, time
import cPickle as pickle

rememberDates = None

class RememberDates:
    def __init__(self):
      self._file = os.path.join(py['datadir'], 'DATES')
      self._dates = {}
      if os.path.isfile(self._file):
        try:
          fp = open(self._file, 'rb')
          self._dates = pickle.load(fp)
          fp.close()
        except IOError:
				  # Something wrong with the file, abort.
          return
        else:
          # No file, abort.
          return
            
  def retrieveAndStoreTime(self, filename, filetime):
    if self._dates != None:
      if self._dates.has_key(filename):
        mtime = self._dates[filename]
      else:
        self._dates[filename] = mtime
      
      if os.path.isfile(self._file):
        pickle.dump(self.dates, fp, 1)
        fp.close()
        return 1
              
def cb_filestat(args):
  global rememberDates
  stattuple = args["mtime"]
  filename = args["filename"]
  if rememberDates == None:
    rememberDates = RememberDates()
  stattuple[8] = rememberDates.retrieveAndStoreTime(filename, stattuple[8])
  return args