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 Finding duplicated code in C#
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 Andreas Dangel
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 2020-10-02
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Finding duplicated code in C#

 By default, the maven-pmd-plugin only supports the languages Java, JavaScript and JSP.
 But {{{https://pmd.github.io/latest/pmd_userdocs_cpd.html#supported-languages}CPD supports many more languages}},
 e.g. C#. In order to enable C# in your build, you need to
 configure several parts:
 
 * Add an additional plugin dependency for c# (pmd-cs module)

 * Select the language <<<cs>>>.

 * Configure the includes filter to consider <<<*.cs>>> (otherwise only java files will be analyzed)

 * Configure the source directory (by default, only <<<src/main/java>>> is analyzed)


+-----+
<project>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-pmd-plugin</artifactId>
        <version>${project.version}</version>
        <configuration>
          <language>cs</language>
          <minimumTokens>10</minimumTokens>
          <includes>
            <include>**/*.cs</include>
          </includes>
          <compileSourceRoots>
            <compileSourceRoot>${basedir}/src/main/cs</compileSourceRoot>
          </compileSourceRoots>
          <printFailingErrors>true</printFailingErrors>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>cpd-check</goal>
            </goals>
          </execution>
        </executions>
        <dependencies>
            <dependency>
                <groupId>net.sourceforge.pmd</groupId>
                <artifactId>pmd-cs</artifactId>
                <version>${pmdVersion}</version>
            </dependency>
        </dependencies>
      </plugin>
      ...
    </plugins>
  </build>
</project>
+-----+

 In this example, the C# source files are located in <<<src/main/cs>>>.

 <<Note:>> The version for <<<net.sourceforge.pmd:pmd-cs>>> needs to match the PMD version, that is
 being used. If you {{{./upgrading-PMD-at-runtime.html}upgrade PMD at runtime}} you'll need to make
 sure, to change the version here as well.