Brumby Code Checker:

The Brumby Code Checker is a redundancy code scanner to effectively find and flag duplicated code in C++, Java, and Ada files. The code checker uses the SabbleCC compiler and a multi dimensional similarity heuristic. It functions by running three independent similarity algorithm and computes a weighted average of those three scores. This heuristic consists of a Cosine Similarity, an ordered Naive (1 to 1) Similarity, and a Longest Common Subsequence algorithm. The application works on C++, Java, Ada, and header files. To do this, it tokenizes the code, then discards comments, white space, and unknown tokens, while also renaming variables to an identifier.

How to Run:

In Eclipse:

• Run the Application class in the Driver package as "Run as", then click run configurations

• go to the arguments tab, then program arguments

• type in a file path followed by (space) .java (or .cpp/.ada depending on file language)

  C:\\Users\\username\workspace\\TestingDuplicate\\src .java
  

• click apply

• click run

• you will be prompted "Specify a percentage for a close match: " which the user will enter a number (0-100) as the minimum percent match between 2 methods that will be accepted

In Eclipse Plugin Environment

• Please refer to Code-Checker-Eclipse-Plug-In repository README for all information

In Linux:

• clone the git repo

• load into eclipse to build the class files

• run the program using java on the command line from the bin directory

  stilwelld@penguin:~/test/RU-Software-Engineering/BrumbyCodeChecker/bin$ 	  
  java driver.Application /home/stilwelld/test/RU-Software-
  Engineering/BrumbyCodeChecker/src .java
  

Results:

Absolute file path names and line in the source file is saved and then grouped duplicates together, prints out a report:

· 750 files in about 2 minutes

· 425 files containing duplicates

· 270,000 method comparisons (computing all matches, 0% and above)

Specify a percentage for a close match: 70

Duplicate found in the following methods:
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test2:  13
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test1:  2
----------> 75.85%

Duplicate found in the following methods:
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test3:  26
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test1:  2
----------> 76.25%

Duplicate found in the following methods:
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test4:  36
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test1:  2
----------> 100.00%

Duplicate found in the following methods:
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test4:  36
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test2:  13
----------> 75.85%

Duplicate found in the following methods:
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test4:  36
C:\Users\cstil\workspace\TestingDuplicate\src\Test2.java:  test3:  26
----------> 76.25%
Total Files: 1
Affected Files: 1
Affected Methods: 5

License

This is a repository intended to be used for a Software Engineering class at Rowan Univerity.