git.maemo.org Git - pywienerlinien/blob - history.py

   1 import os
   2
   3 class History(list):
   4
   5     def __init__(self, hist_file, *args, **kwargs):
   6         if os.path.isfile(hist_file):
   7             f = open(hist_file, 'r')
   8             h = map(lambda x: x.strip(), f.readlines())
   9             f.close()
  10             self._file = open(hist_file, 'a')
  11         else:
  12             self._file = open(hist_file, 'a')
  13             h = []
  14
  15         list.__init__(self, h, *args, **kwargs)
  16
  17     def __add__(self, item):
  18         if not item in self:
  19             super(History, self).__add__(item)
  20             self._file.write('%s\n' % item)
  21             self._file.flush()
  22
  23     def insert(self, index, item):
  24         if not item in self:
  25             super(History, self).insert(index, item)
  26             self._file.write('%s\n' % item)
  27             self._file.flush()
  28
  29     def __delitem__(self, item):
  30         super(History, self).__deltitem(item)
  31         self._file.write('%s\n' % item)
  32         self._file.flush()
  33         self._file.close()
  34
  35     def close(self):
  36         self._file.close()