Mac/Demo/example2/dnslookup-2.py

   1 import FrameWork
   2 import EasyDialogs
   3 from Carbon import Res
   4 from Carbon import Dlg
   5 import sys
   6 import socket
   7 import string
   8 import macresource
   9 #
  10 # Definitions for our resources
  11 ID_MAIN=512
  12 ID_ABOUT=513
  13
  14 ITEM_LOOKUP_ENTRY=1
  15 ITEM_RESULT=2
  16 ITEM_LOOKUP_BUTTON=3
  17
  18 def main():
  19     macresource.need("DLOG", ID_MAIN, "dnslookup-2.rsrc")
  20     DNSLookup()
  21
  22 class DNSLookup(FrameWork.Application):
  23     "Application class for DNS Lookup"
  24
  25     def __init__(self):
  26         # First init menus, etc.
  27         FrameWork.Application.__init__(self)
  28         # Next create our dialog
  29         self.main_dialog = MyDialog(self)
  30         # Now open the dialog
  31         self.main_dialog.open(ID_MAIN)
  32         # Finally, go into the event loop
  33         self.mainloop()
  34
  35     def makeusermenus(self):
  36         self.filemenu = m = FrameWork.Menu(self.menubar, "File")
  37         self.quititem = FrameWork.MenuItem(m, "Quit", "Q", self.quit)
  38
  39     def quit(self, *args):
  40         self._quit()
  41
  42     def do_about(self, *args):
  43         f = Dlg.GetNewDialog(ID_ABOUT, -1)
  44         while 1:
  45             n = Dlg.ModalDialog(None)
  46             if n == 1:
  47                 return
  48
  49 class MyDialog(FrameWork.DialogWindow):
  50     "Main dialog window for DNSLookup"
  51     def __init__(self, parent):
  52         FrameWork.DialogWindow.__init__(self, parent)
  53         self.parent = parent
  54
  55     def do_itemhit(self, item, event):
  56         if item == ITEM_LOOKUP_BUTTON:
  57             self.dolookup()
  58
  59     def dolookup(self):
  60         """Get text entered in the lookup entry area.  Place result of the
  61            call to dnslookup in the result entry area."""
  62         tp, h, rect = self.dlg.GetDialogItem(ITEM_LOOKUP_ENTRY)
  63         txt = Dlg.GetDialogItemText(h)
  64
  65         tp, h, rect = self.dlg.GetDialogItem(ITEM_RESULT)
  66         Dlg.SetDialogItemText(h, self.dnslookup(txt))
  67
  68     def dnslookup(self, str):
  69         """ Perform DNS lookup on str.  If first character of digit is numeric,
  70             assume that str contains an IP address.  Otherwise, assume that str
  71             contains a hostname."""
  72         if str == '': str = ' '
  73         if str[0] in string.digits:
  74             try:
  75                 value = socket.gethostbyaddr(str)[0]
  76             except:
  77                 value = 'Lookup failed'
  78         else:
  79             try:
  80                 value = socket.gethostbyname(str)
  81             except:
  82                 value = 'Lookup failed'
  83         return value
  84
  85
  86 main()