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 © 2003 - 2010 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 LoggerDebug(threading.Thread):
  34     '''
  35     Thread which reads defined files and prints it to stderr.
  36     '''
  37     def __init__(self, filename):
  38         '''
  39         Initializes reader on filename, text will be printed to stderr.
  40         '''
  41         threading.Thread.__init__(self)
  42         self.file_descriptor = open(filename, 'r')
  43         self.filename = filename
  44         self.canceled = False
  45
  46     def run(self):
  47         """
  48         This is basically tail -f reimplementation
  49         """
  50         while not self.canceled:
  51             where = self.file_descriptor.tell()
  52             txt = self.file_descriptor.readlines()
  53             if len(txt) == 0:
  54                 fd_results = os.fstat(self.file_descriptor.fileno())
  55                 try:
  56                     st_results = os.stat(self.filename)
  57                 except OSError:
  58                     st_results = fd_results
  59
  60                 if st_results[1] == fd_results[1] or sys.platform == 'win32':
  61                     time.sleep(1)
  62                     self.file_descriptor.seek(where)
  63                 else:
  64                     self.file_descriptor = open(self.filename, 'r')
  65             else:
  66                 sys.stderr.write(''.join(txt))
  67         self.file_descriptor.close()
  68
  69 class Logger(threading.Thread):
  70     '''
  71     Thread which reads defined files and posts events on change.
  72     '''
  73     def __init__(self, win, filename):
  74         '''
  75         Initializes reader on filename, events will be sent to win.
  76         '''
  77         threading.Thread.__init__(self)
  78         self.win = win
  79         self.file_descriptor = open(filename, 'r')
  80         self.filename = filename
  81         self.canceled = False
  82
  83     def run(self):
  84         """
  85         This is basically tail -f reimplementation
  86         """
  87         while not self.canceled:
  88             where = self.file_descriptor.tell()
  89             txt = self.file_descriptor.readlines()
  90             if len(txt) == 0:
  91                 fd_results = os.fstat(self.file_descriptor.fileno())
  92                 try:
  93                     st_results = os.stat(self.filename)
  94                 except OSError:
  95                     st_results = fd_results
  96
  97                 if st_results[1] == fd_results[1] or sys.platform == 'win32':
  98                     time.sleep(1)
  99                     self.file_descriptor.seek(where)
 100                 else:
 101                     self.file_descriptor = open(self.filename, 'r')
 102             else:
 103                 evt = Wammu.Events.LogEvent(txt = ''.join(txt))
 104                 wx.PostEvent(self.win, evt)
 105         self.file_descriptor.close()
 106
 107 class LogFrame(wx.Frame):
 108     '''
 109     Window with debug log.
 110     '''
 111
 112     def __init__(self, parent, cfg):
 113         '''
 114         Creates window and initializes event handlers.
 115         '''
 116         self.cfg = cfg
 117         if cfg.HasEntry('/Debug/X') and cfg.HasEntry('/Debug/Y'):
 118             pos = wx.Point(
 119                     cfg.ReadInt('/Debug/X'),
 120                     cfg.ReadInt('/Debug/Y'))
 121         else:
 122             pos = wx.DefaultPosition
 123         size = wx.Size(
 124                 cfg.ReadInt('/Debug/Width'),
 125                 cfg.ReadInt('/Debug/Height'))
 126         wx.Frame.__init__(
 127                 self,
 128                 parent,
 129                 -1,
 130                 _('Wammu debug log'),
 131                 pos,
 132                 size,
 133                 wx.DEFAULT_FRAME_STYLE | wx.RESIZE_BORDER)
 134         self.txt = wx.TextCtrl(
 135                 self,
 136                 -1,
 137                 _('Here will appear debug messages from Gammu...\n'),
 138                 style = wx.TE_MULTILINE | wx.TE_READONLY)
 139         self.txt.SetFont(wx.Font(9, wx.MODERN, wx.NORMAL, wx.NORMAL))
 140         Wammu.Events.EVT_LOG(self, self.OnLog)
 141         wx.EVT_SIZE(self, self.OnSize)
 142         self.OnSize(None)
 143
 144     def OnLog(self, evt):
 145         '''
 146         Event handler for text events from Logger.
 147         '''
 148         self.txt.AppendText(evt.txt)
 149
 150     def OnSize(self, evt):
 151         '''
 152         Resize handler to correctly resize text area.
 153         '''
 154         width, height = self.GetClientSizeTuple()
 155         self.txt.SetDimensions(0, 0, width, height)