Projects / Ctcompare

Ctcompare

Ctcompare allows you to compare several sets of C, Java, Python, or Perl code trees on a token basis, rather than on a line by line basis. These programs help to identify code copying and similarities between snippets of code in both trees, even if the actual lines are dissimilar.

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Recent releases

  •  12 Dec 2011 01:46

    Release Notes: This release adds memory and performance improvements (up to two times faster than the 3.1 codebase), several other lexers, and the new flags -s (to split large code trees), and -u (to break up num,num,num,num runs in CTF files so that these runs of tokens are not compared).

    •  26 Dec 2009 00:07

      Release Notes: The codebase was completely rewritten, making the tool 5 to 10 times faster than the 2.x versions. The codebase is now structured as a library with command-line front-end tools.

      •  17 Feb 2008 07:09

        Release Notes: ctcompare's speed has been doubled, with some hand-coding of the hotspot loops. A new database has been added, with read speeds comparable to Berkeley DB 4, but with faster write speeds. Compile-time support for code comparisons within a source tree has been added.

        •  05 Feb 2008 10:54

          Release Notes: Significant comparison performance improvements (8 times or more).

          •  28 Jan 2008 00:10

            Release Notes: Speed has been significantly improved, especially when there are large amounts of similarities between code trees. This release has a command line option to sort the results by the number of tokens in a run. Initial support for Java source files has been added.

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