This project is found in GitHub: https://github.com/dlidstrom/Duplo.

Duplicated source code blocks can harm maintainability of software systems. Duplo is a tool to find duplicated code blocks in large C, C , Java, C# and VB.Net systems.

Duplo was originally developed by Christian M. Ammann and is now maintained and developed by Daniel Lidström.

Duplo works with a list of files. You can either specify a file that contains the list of files, or you can pass them using stdin.

Run duplo --help on the command line to see the detailed options.

# Docker on unix
> find . -type f \( -iname "*.cpp" -or -iname "*.h" \) | docker run --rm -i -w /src -v $(pwd):/src dlidstrom/duplo - out.txt

duplo will write the duplicated blocks into out.txt.

duplo can analyze files specified in a separate file:

# Docker on unix
> find . -type f \( -iname "*.cpp" -o -iname "*.h" \) > files.lst
> docker run --rm -i -w /src -v $(pwd):/src dlidstrom/duplo files.lst out.txt

Again, duplo will write the duplicated blocks into out.txt.

Please open a GitHub issue to discuss feedback, feature requests and bug reports.

Duplo is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Duplo is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Duplo; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA