Mac/Demo/example2/dnslookup-2.py

   1 import FrameWork
   2 import EasyDialogs
   3 import Res
   4 import Dlg
   5 import sys
   6 import socket
   7 import string
   8 #
   9 # Definitions for our resources
  10 ID_MAIN=512
  11 ID_ABOUT=513
  12
  13 ITEM_LOOKUP_ENTRY=1
  14 ITEM_RESULT=2
  15 ITEM_LOOKUP_BUTTON=3
  16
  17 def main():
  18     try:
  19         dummy = Res.GetResource('DLOG', ID_MAIN)
  20     except Res.Error:
  21         try:
  22             Res.FSpOpenResFile("dnslookup-2.rsrc", 1)
  23         except Res.Error:
  24             EasyDialogs.Message("Cannot open dnslookup-2.rsrc")
  25             sys.exit(1)
  26     DNSLookup()
  27
  28 class DNSLookup(FrameWork.Application):
  29     "Application class for DNS Lookup"
  30
  31     def __init__(self):
  32         # First init menus, etc.
  33         FrameWork.Application.__init__(self)
  34         # Next create our dialog
  35         self.main_dialog = MyDialog(self)
  36         # Now open the dialog
  37         self.main_dialog.open(ID_MAIN)
  38         # Finally, go into the event loop
  39         self.mainloop()
  40
  41     def makeusermenus(self):
  42         self.filemenu = m = FrameWork.Menu(self.menubar, "File")
  43         self.quititem = FrameWork.MenuItem(m, "Quit", "Q", self.quit)
  44
  45     def quit(self, *args):
  46         self._quit()
  47
  48     def do_about(self, *args):
  49         f = Dlg.GetNewDialog(ID_ABOUT, -1)
  50         while 1:
  51             n = Dlg.ModalDialog(None)
  52             if n == 1:
  53                 return
  54
  55 class MyDialog(FrameWork.DialogWindow):
  56     "Main dialog window for DNSLookup"
  57     def __init__(self, parent):
  58         FrameWork.DialogWindow.__init__(self, parent)
  59         self.parent = parent
  60
  61     def do_itemhit(self, item, event):
  62         if item == ITEM_LOOKUP_BUTTON:
  63             self.dolookup()
  64
  65     def dolookup(self):
  66         """Get text entered in the lookup entry area.  Place result of the
  67            call to dnslookup in the result entry area."""
  68         tp, h, rect = self.dlg.GetDialogItem(ITEM_LOOKUP_ENTRY)
  69         txt = Dlg.GetDialogItemText(h)
  70
  71         tp, h, rect = self.dlg.GetDialogItem(ITEM_RESULT)
  72         Dlg.SetDialogItemText(h, self.dnslookup(txt))
  73
  74     def dnslookup(self, str):
  75         """ Perform DNS lookup on str.  If first character of digit is numeric,
  76             assume that str contains an IP address.  Otherwise, assume that str
  77             contains a hostname."""
  78         if str == '': str = ' '
  79         if str[0] in string.digits:
  80             try:
  81                 value = socket.gethostbyaddr(str)[0]
  82             except:
  83                 value = 'Lookup failed'
  84         else:
  85             try:
  86                 value = socket.gethostbyname(str)
  87             except:
  88                 value = 'Lookup failed'
  89         return value
  90
  91
  92 main()