So, I have two similar things I wish to compare: A depth-indented file tree, and a list of full paths. Depth-Indent Tree Example: 
base/
 dir1/
  file1.txt
  a.png
  dir2/
   b.txt
  q.txt
 dir3/
  a.png
 f.txt

etc.

[download]
File Path Example: 
base/dir1/file1.txt
base/dir1/a.png
base/dir1/dir2/b.txt
base/dir1/q.txt

etc.

[download]
Essentially, I want to take the File Path list, and compare it to the Depth-Indent Tree and find what does not exist in the Depth-Indent tree, but does exist in the File Path list. For example: 
base/
 dir1/
  a.txt

[download]
compared to 
base/
base/dir1/
base/dir1/a.txt
base/b.txt

[download]
would yeild that base/b.txt does not exist in the depth-indent tree. The one other stipulation is that this must be fast, and capable of handling ~12,000 entries in both the depth-indent tree and the file path list in a timely manner. Any ideas? Thanks for any help!

In reply to Comparing depth-indent tree to full-paths by Kage

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