Why would you delete nodes that have .h but not .b?
Sent from my Windows Phone
From: Edward K. Ream
Sent: 6/2/2012 5:50 PM
To: leo-editor
Subject: Re: Rev 5378: cleanup-imported-nodes script in scripts.leo &
an Aha
On Jun 2, 6:52 am, "Edward K. Ream" <[email protected]> wrote:
> In short, Leo's node structure drastically simplifies the patterns to
> be discovered. That's the insight.
With this insight, I am heavily revising the recursive import script I
use to study other programs.
The script now contains a suite of post-processing fixes. Examples:
- Replacing backslashes with forward slashes in headlines.
- Removing empty nodes.
- Adding @path directives that reduce the needed path specifiers in
descendant nodes.
- Adding @file to nodes or replacing @file with @@file.
Here is the fixer that removes empty nodes. It uses the simplest
possible algorithm so as not to run into problems with changing a tree
inside an iterator, and also to ensure that parent nodes are deleted
if all children are deleted. It probably takes 0.1 sec or less.
def remove_empty_nodes (self,c,p):
# Restart the scan once a node is deleted.
root = p.copy()
changed = True
while changed:
changed = False
for p in root.self_and_subtree():
if not p.b and not p.hasChildren():
g.trace('** deleting',p.h)
p.doDelete()
c.selectPosition(root)
changed = True
break
The revolution in Leo scripting continues...
EKR
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