Ndiff for Zenmap comparison

[David Fifield <david () bamsoftware com>]

Hello,

Zenmap now uses Ndiff to do its scan comparisons. To me this is a better
way to understand the difference between two scans than the previous
tree display. Here is a picture of what it looks like comparing two of
the test scans from the ndiff distribution.

http://www.bamsoftware.com/wiki/uploads/Nmap/zenmap-ndiff.png

Compare that to the previous interface.

http://www.bamsoftware.com/wiki/uploads/Nmap/zenmap-old-diff.png

Unfortunately this means Zenmap requires Ndiff in order to do scan
comparisons. Comparisons will be slower because each scan has to be
re-parsed by Ndiff whereas the old comparison worked on already-parsed
scans in memory. The benefit is better output and eased maintenance.

David Fifield

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