Flay – analyzes code for structural similarities

Flay analyzes code for structural similarities. Differences in literal values, variable, class, method names, whitespace, programming style, braces vs do/end, etc are all ignored.

This is free and open source software.

• Reports differences at any level of code.
• Adds a score multiplier to identical nodes.
• Differences in literal values, variable, class, and method names are ignored.
• Differences in whitespace, programming style, braces vs do/end, etc are ignored.
• Works across files.
  • Add the flay-persistent plugin to work across large/many projects.
• Run –diff to see an N-way diff of the code.
• Provides conservative (default) and –liberal pruning options.
• Provides –fuzzy duplication detection.
• Language independent: Plugin system allows other languages to be flayed.
  • Ships with .rb and .erb.
  • JavaScript and others will be available separately.
• Includes FlayTask for Rakefiles.
• Uses path_expander, so you can use:
  • dir_arg – expand a directory automatically
  • @file_of_args – persist arguments in a file
  • -path_to_subtract – ignore intersecting subsets of files/directories
• Skips files matched via patterns in .flayignore (subset format of .gitignore).

Website: github.com/seattlerb/flay
Support:
Developer: Ryan Davis
License: MIT License

Flay is written in Ruby. Learn Ruby with our recommended free books and free tutorials.

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