copy-paste-detector

copy-paste-detector (cpd) is a copy/paste-detector for various languages

Supported languages

• javascript
• coffeescript
• php
• css (very simple!)
• generic tokenizer

Reports

• Text (simple)
• JSON
• PMD-CPD (for Continuous Integration, e.g. Jenkins)

Installation

npm install copy-paste-detector

Usage Example

$ ./bin/cpd -d /tmp/zendframework/library/ -i *.php
    copy-paste-detector 0.0.1 by Hans-Peter Buniat
        parsing files 2263/2263 (100%) [====================] 0.0s
    Found 97 exact clones with 8348 duplicated lines in 125 files:

        -   /tmp/zendframework/library/Zend/Barcode/Object/Ean13.php:40-58
            /tmp/zendframework/library/Zend/Barcode/Object/Upce.php:34-52

        ..

        -   /tmp/zendframework/library/Zend/File/Transfer/Adapter/AbstractAdapter.php:1013-1100
            /tmp/zendframework/library/Zend/View/Helper/Navigation/AbstractHelper.php:770-857
        0.03% duplicated lines out of 287753 total lines of code.

Credits

This tool is inspired by Sebastian Bergmanns phpcpd, based on an idea i had back in 2011 (sebastianbergmann/phpcpd#26)