Lib/idlelib/RstripExtension.py

   1 'Provides "Strip trailing whitespace" under the "Format" menu.'
   2
   3 __author__ = "Roger D. Serwy <roger.serwy at gmail.com>"
   4
   5 class RstripExtension:
   6
   7     menudefs = [
   8         ('format', [None,
   9                ('Strip trailing whitespace', '<<do-rstrip>>'),
  10        ]),]
  11
  12     def __init__(self, editwin):
  13         self.editwin = editwin
  14         self.editwin.text.bind("<<do-rstrip>>", self.do_rstrip)
  15
  16     def do_rstrip(self, event=None):
  17
  18         text = self.editwin.text
  19         undo = self.editwin.undo
  20
  21         undo.undo_block_start()
  22
  23         end_line = int(float(text.index('end'))) + 1
  24         for cur in range(1, end_line):
  25             txt = text.get('%i.0' % cur, '%i.0 lineend' % cur)
  26             cut = len(txt.rstrip())
  27             text.delete('%i.%i' % (cur, cut), '%i.0 lineend' % cur)
  28
  29         undo.undo_block_stop()