Wammu/Logger.py

   1 # -*- coding: UTF-8 -*-
   2 # vim: expandtab sw=4 ts=4 sts=4:
   3 '''
   4 Wammu - Phone manager
   5 Logging window and thread for log reading
   6 '''
   7 __author__ = 'Michal Čihař'
   8 __email__ = 'michal@cihar.com'
   9 __license__ = '''
  10 Copyright (c) 2003 - 2007 Michal Čihař
  11
  12 This program is free software; you can redistribute it and/or modify it
  13 under the terms of the GNU General Public License version 2 as published by
  14 the Free Software Foundation.
  15
  16 This program is distributed in the hope that it will be useful, but WITHOUT
  17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  19 more details.
  20
  21 You should have received a copy of the GNU General Public License along with
  22 this program; if not, write to the Free Software Foundation, Inc.,
  23 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  24 '''
  25
  26 import threading
  27 import wx
  28 import os
  29 import sys
  30 import time
  31 import Wammu.Events
  32
  33 class Logger(threading.Thread):
  34     '''
  35     Thread which reads defined files and posts events on change.
  36     '''
  37     def __init__(self, win, filename):
  38         '''
  39         Initializes reader on filename, events will be sent to win.
  40         '''
  41         threading.Thread.__init__(self)
  42         self.win = win
  43         self.file_descriptor = open(filename, 'r')
  44         self.filename = filename
  45         self.canceled = False
  46
  47     def run(self):
  48         """
  49         This is basically tail -f reimplementation
  50         """
  51         while not self.canceled:
  52             where = self.file_descriptor.tell()
  53             txt = self.file_descriptor.readlines()
  54             if len(txt) == 0:
  55                 fd_results = os.fstat(self.file_descriptor.fileno())
  56                 try:
  57                     st_results = os.stat(self.filename)
  58                 except OSError:
  59                     st_results = fd_results
  60
  61                 if st_results[1] == fd_results[1] or sys.platform == 'win32':
  62                     time.sleep(1)
  63                     self.file_descriptor.seek(where)
  64                 else:
  65                     self.file_descriptor = open(self.filename, 'r')
  66             else:
  67                 evt = Wammu.Events.LogEvent(txt = ''.join(txt))
  68                 wx.PostEvent(self.win, evt)
  69         self.file_descriptor.close()
  70
  71 class LogFrame(wx.Frame):
  72     '''
  73     Window with debug log.
  74     '''
  75
  76     def __init__(self, parent, cfg):
  77         '''
  78         Creates window and initializes event handlers.
  79         '''
  80         self.cfg = cfg
  81         if cfg.HasEntry('/Debug/X') and cfg.HasEntry('/Debug/Y'):
  82             pos = wx.Point(
  83                     cfg.ReadInt('/Debug/X'),
  84                     cfg.ReadInt('/Debug/Y'))
  85         else:
  86             pos = wx.DefaultPosition
  87         size = wx.Size(
  88                 cfg.ReadInt('/Debug/Width'),
  89                 cfg.ReadInt('/Debug/Height'))
  90         wx.Frame.__init__(
  91                 self,
  92                 parent,
  93                 -1,
  94                 _('Wammu debug log'),
  95                 pos,
  96                 size,
  97                 wx.DEFAULT_FRAME_STYLE | wx.RESIZE_BORDER)
  98         self.txt = wx.TextCtrl(
  99                 self,
 100                 -1,
 101                 _('Here will appear debug messages from Gammu...\n'),
 102                 style = wx.TE_MULTILINE | wx.TE_READONLY)
 103         self.txt.SetFont(wx.Font(9, wx.MODERN, wx.NORMAL, wx.NORMAL))
 104         Wammu.Events.EVT_LOG(self, self.OnLog)
 105         wx.EVT_SIZE(self, self.OnSize)
 106         self.OnSize(None)
 107
 108     def OnLog(self, evt):
 109         '''
 110         Event handler for text events from Logger.
 111         '''
 112         self.txt.AppendText(evt.txt)
 113
 114     def OnSize(self, evt):
 115         '''
 116         Resize handler to correctly resize text area.
 117         '''
 118         width, height = self.GetClientSizeTuple()
 119         self.txt.SetDimensions(0, 0, width, height)