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      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()
     30