Tabs to Spaces with PyPN

Want to convert your tabs to spaces and annoyed that your editor author hasn’t implemented that feature in a handy menu item yet?

Add a PyPN script to do it:

import pn
import scintilla
from pypn.decorators import script

def SetTarget(e, x, y):
	e.TargetStart = x
	e.TargetEnd = y

@script("Tabs to Spaces", "Text")
def TabsToSpaces():
	editor = scintilla.Scintilla(pn.CurrentDoc())

	tabSpaces = editor.TabWidth
	spaces = ""
	for x in range(tabSpaces):
		spaces = spaces + " "

	end = editor.Length

	SetTarget(editor, 0, end)
	editor.SearchFlags = 0
	editor.BeginUndoAction()

	pos = editor.SearchInTarget(1, "\t")

	while(pos != -1):
		l1 = editor.TargetEnd - editor.TargetStart
		editor.ReplaceTarget(tabSpaces, spaces)

		# adjust doc length
		end = end + tabSpaces - l1
		start = pos + tabSpaces

		if start >= end:
			pos = -1
		else:
			SetTarget(editor, start, end)
			pos = editor.SearchInTarget(1, "\t")

	editor.EndUndoAction()

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This entry was posted on Tuesday, April 10th, 2007 at 12:05 pm and is filed under Programmer's Notepad, PyPN, python. You can follow any comments to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

One comment

  1. Sam
    August 2, 2007 at 11:19 am

    Only just noticed this post. While tabs to spaces is handy for those that use spaces for indenting, how would you do the reverse (i.e. spaces to tabs)?