sbt-cpd - Copy & Paste Detection using PMD/CPD for sbt

This is an sbt plugin for duplicate code detection using Copy/Paste Detector (CPD) from the PMD project.

Install the plugin by adding the following to project/plugins.sbt:

addSbtPlugin("com.github.sbt" % "sbt-cpd" % "<version>")

And then execute the plugin with sbt cpd. This will scan your source code under src/main/scala and output a report containing the duplicates to target/scala-2.xx/cpd/cpd.xml.

Settings

(see also the CPD documentation)

Key	Type	Default	Description
cpdReportType	CpdReportType	CpdReportType.XML	Selects the output format for the CPD report. Valid types: XML, Simple, CSV & VS
cpdLanguage	CpdLanguage	CpdLanguage.Scala	Language to analyze.1
cpdMaxMemoryInMB	Integer	512	Maximum amount of memory to allow for CPD (in MB).
cpdMinimumTokens	Integer	100	Minimum number of tokens of potential duplicates.
cpdSourceEncoding	String	utf-8	Source file encoding.
cpdSourceDirectories	Seq (Paths)	main source path(s)	Paths of the source files to analyze.
cpdOutputType	CpdOutputType	CpdOutputType.File	Selects the output type for the CPD report.2 Valid types: File, Console
cpdTargetPath	File Path	<cross-target>/cpd	Output path for CPD reports.
cpdReportName	String (filename)	cpd.xml	Name of the report file to generate (under cpdTargetPath).
cpdReportFileEncoding	String	utf-8	Report file encoding.
cpdSkipDuplicateFiles	Boolean	false	Ignore multiple copies of files of the same name and length in comparison.
cpdSkipLexicalErrors	Boolean	false	Skip files which can't be tokenized due to invalid characters instead of aborting.
cpdIgnoreLiterals	Boolean	false	Ignore literal value differences when evaluating a duplicate block.
cpdIgnoreIdentifiers	Boolean	false	Ignore identifier name differences when evaluating a duplicate block.
cpdIgnoreAnnotations	Boolean	false	Ignore language annotations when evaluating a duplicate block.
cpdFailOnDuplicates	Boolean	false	Fail the build if duplicates are detected.

1. Valid languages:
   • Scala
   • Java
   • C
   • CPP
   • CS
   • CSharp
   • ECMAScript
   • Fortran
   • Go
   • JSP
   • JavaScript
   • Matlab
   • ObjectiveC
   • PHP
   • PLSQ
   • Ruby
   • Swift
2. If set to CpdOutputType.Console then cpdTargetPath and cpdReportName are ignored.

Contributors

Many thanks to

• corux
• Jentsch
• Martin Mauch
• Matic Potočnik

for their awesome contributions!

License

This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html