mdw@git.distorted.org.uk Git - mLib-python/blob - fwatch.pyx

   1 ### -*-pyrex-*-
   2 ###
   3 ### Watching files for changes
   4 ###
   5 ### (c) 2007 Straylight/Edgeware
   6 ###
   7
   8 ###----- Licensing notice ---------------------------------------------------
   9 ###
  10 ### This file is part of the Python interface to mLib.
  11 ###
  12 ### mLib/Python is free software; you can redistribute it and/or modify
  13 ### it under the terms of the GNU General Public License as published by
  14 ### the Free Software Foundation; either version 2 of the License, or
  15 ### (at your option) any later version.
  16 ###
  17 ### mLib/Python is distributed in the hope that it will be useful,
  18 ### but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ### GNU General Public License for more details.
  21 ###
  22 ### You should have received a copy of the GNU General Public License
  23 ### along with mLib/Python; if not, write to the Free Software Foundation,
  24 ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25
  26 cdef class FWatch:
  27   """
  28   FWatch(FILE): watch FILE for changes
  29
  30   FILE may be a string, file descriptor, or an object with a `fileno' method.
  31   """
  32   cdef fwatch fw
  33   cdef public file
  34   def __cinit__(me, file):
  35     me._init(file)
  36   def __init__(me, file):
  37     me._init(file)
  38   cdef _init(me, file):
  39     if isinstance(file, str):
  40       fwatch_init(&me.fw, file)
  41     else:
  42       fwatch_initfd(&me.fw, _getfd(file))
  43     me.file = file
  44   def update(me):
  45     """FW.update() -> RC: nonzero if the file has changed state"""
  46     cdef int rc
  47     if isinstance(me.file, str):
  48       rc = fwatch_update(&me.fw, me.file)
  49     else:
  50       rc = fwatch_updatefd(&me.fw, _getfd(me.file))
  51     return rc
  52
  53 ###----- That's all, folks --------------------------------------------------