commit ef8b6df38704d152f7175a1293d8fc886d00f6ff
Author: Erik C. Thauvin <erik@thauvin.net>
Date:   Fri Apr 14 06:02:38 2023 -0700

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a63b224
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,55 @@
+.gradle
+.DS_Store
+build
+lib/bld/**
+lib/compile/**
+lib/runtime/**
+lib/standalone/**
+lib/test/**
+!bld-wrapper.jar
+!bld-wrapper.properties
+
+# IDEA ignores
+
+# User-specific
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# SonarLint plugin
+.idea/sonarlint/
+
+# Editor-based Rest Client
+.idea/httpRequests
\ No newline at end of file
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/app.iml b/.idea/app.iml
new file mode 100644
index 0000000..787b59b
--- /dev/null
+++ b/.idea/app.iml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <output url="file://$MODULE_DIR$/build/main" />
+    <output-test url="file://$MODULE_DIR$/build/test" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/resources" type="java-test-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/src/main/resources/templates" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library" scope="RUNTIME">
+      <library>
+        <CLASSES>
+          <root url="file://$MODULE_DIR$/src/main/resources/templates" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="library" name="compile" level="project" />
+    <orderEntry type="library" scope="RUNTIME" name="runtime" level="project" />
+    <orderEntry type="library" scope="TEST" name="test" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/bld.iml b/.idea/bld.iml
new file mode 100644
index 0000000..e63e11e
--- /dev/null
+++ b/.idea/bld.iml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <output url="file://$MODULE_DIR$/build/bld" />
+    <output-test url="file://$MODULE_DIR$/build/bld" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/src/bld">
+      <sourceFolder url="file://$MODULE_DIR$/src/bld/java" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="bld" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/codeStyles/codeStyleConfig.xml b/.idea/codeStyles/codeStyleConfig.xml
new file mode 100644
index 0000000..a55e7a1
--- /dev/null
+++ b/.idea/codeStyles/codeStyleConfig.xml
@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  </state>
+</component>
\ No newline at end of file
diff --git a/.idea/copyright/Apache_License.xml b/.idea/copyright/Apache_License.xml
new file mode 100644
index 0000000..206aa7d
--- /dev/null
+++ b/.idea/copyright/Apache_License.xml
@@ -0,0 +1,6 @@
+<component name="CopyrightManager">
+  <copyright>
+    <option name="notice" value=" Copyright &amp;#36;today.year the original author or authors.&#10; &#10; Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);&#10;  you may not use this file except in compliance with the License.&#10;  You may obtain a copy of the License at&#10; &#10;      https://www.apache.org/licenses/LICENSE-2.0&#10; &#10; Unless required by applicable law or agreed to in writing, software&#10; distributed under the License is distributed on an &quot;AS IS&quot; BASIS,&#10; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.&#10; See the License for the specific language governing permissions and&#10; limitations under the License." />
+    <option name="myName" value="Apache License" />
+  </copyright>
+</component>
\ No newline at end of file
diff --git a/.idea/copyright/profiles_settings.xml b/.idea/copyright/profiles_settings.xml
new file mode 100644
index 0000000..f2907f1
--- /dev/null
+++ b/.idea/copyright/profiles_settings.xml
@@ -0,0 +1,3 @@
+<component name="CopyrightManager">
+  <settings default="Apache License" />
+</component>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..d0d3c80
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,11 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="AutoCloseableResource" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="METHOD_MATCHER_CONFIG" value="java.util.Formatter,format,java.io.Writer,append,com.google.common.base.Preconditions,checkNotNull,org.hibernate.Session,close,java.io.PrintWriter,printf,java.io.PrintStream,printf,net.sourceforge.pmd.PmdAnalysis,create" />
+    </inspection_tool>
+    <inspection_tool class="JavadocDeclaration" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ADDITIONAL_TAGS" value="created" />
+    </inspection_tool>
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/bld.xml b/.idea/libraries/bld.xml
new file mode 100644
index 0000000..7aa10eb
--- /dev/null
+++ b/.idea/libraries/bld.xml
@@ -0,0 +1,17 @@
+<component name="libraryTable">
+  <library name="bld">
+    <CLASSES>
+      <root url="file://$PROJECT_DIR$/lib/bld" />
+      <root url="jar://$USER_HOME$/.rife2/dist/rife2-1.5.19.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.rife2/dist/rife2-1.5.19-sources.jar!/" />
+    </SOURCES>
+    <excluded>
+      <root url="jar://$PROJECT_DIR$/lib/bld/bld-wrapper.jar!/" />
+    </excluded>
+    <jarDirectory url="file://$PROJECT_DIR$/lib/bld" recursive="false" />
+    <jarDirectory url="file://$PROJECT_DIR$/lib/bld" recursive="false" type="SOURCES" />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/compile.xml b/.idea/libraries/compile.xml
new file mode 100644
index 0000000..9bd86aa
--- /dev/null
+++ b/.idea/libraries/compile.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="compile">
+    <CLASSES>
+      <root url="file://$PROJECT_DIR$/lib/compile" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="file://$PROJECT_DIR$/lib/compile" />
+    </SOURCES>
+    <jarDirectory url="file://$PROJECT_DIR$/lib/compile" recursive="false" />
+    <jarDirectory url="file://$PROJECT_DIR$/lib/compile" recursive="false" type="SOURCES" />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/runtime.xml b/.idea/libraries/runtime.xml
new file mode 100644
index 0000000..81feb0b
--- /dev/null
+++ b/.idea/libraries/runtime.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="runtime">
+    <CLASSES>
+      <root url="file://$PROJECT_DIR$/lib/runtime" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="file://$PROJECT_DIR$/lib/runtime" />
+    </SOURCES>
+    <jarDirectory url="file://$PROJECT_DIR$/lib/runtime" recursive="false" />
+    <jarDirectory url="file://$PROJECT_DIR$/lib/runtime" recursive="false" type="SOURCES" />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/test.xml b/.idea/libraries/test.xml
new file mode 100644
index 0000000..13b6513
--- /dev/null
+++ b/.idea/libraries/test.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="test">
+    <CLASSES>
+      <root url="file://$PROJECT_DIR$/lib/test" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="file://$PROJECT_DIR$/lib/test" />
+    </SOURCES>
+    <jarDirectory url="file://$PROJECT_DIR$/lib/test" recursive="false" />
+    <jarDirectory url="file://$PROJECT_DIR$/lib/test" recursive="false" type="SOURCES" />
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..542659b
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PDMPlugin">
+    <option name="skipTestSources" value="false" />
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..55adcb9
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/app.iml" filepath="$PROJECT_DIR$/.idea/app.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/bld.iml" filepath="$PROJECT_DIR$/.idea/bld.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/runConfigurations/PmdOperation.xml b/.idea/runConfigurations/PmdOperation.xml
new file mode 100644
index 0000000..4c7df76
--- /dev/null
+++ b/.idea/runConfigurations/PmdOperation.xml
@@ -0,0 +1,9 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="PmdOperation" type="Application" factoryName="Application" nameIsGenerated="true">
+    <option name="MAIN_CLASS_NAME" value="rife.bld.extension.PmdOperation" />
+    <module name="app" />
+    <method v="2">
+      <option name="Make" enabled="true" />
+    </method>
+  </configuration>
+</component>
\ No newline at end of file
diff --git a/.idea/runConfigurations/Run Tests.xml b/.idea/runConfigurations/Run Tests.xml
new file mode 100644
index 0000000..65b2217
--- /dev/null
+++ b/.idea/runConfigurations/Run Tests.xml	
@@ -0,0 +1,13 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Run Tests" type="JUnit" factoryName="JUnit">
+    <module name="app" />
+    <option name="PACKAGE_NAME" value="moog" />
+    <option name="MAIN_CLASS_NAME" value="rife.bld.extension" />
+    <option name="METHOD_NAME" value="" />
+    <option name="TEST_OBJECT" value="directory" />
+    <dir value="$PROJECT_DIR$/src/test/java" />
+    <method v="2">
+      <option name="Make" enabled="true" />
+    </method>
+  </configuration>
+</component>
\ No newline at end of file
diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..90264e1
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,23 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "java",
+            "name": "Run Main",
+            "request": "launch",
+            "mainClass": "rife.bld.extension.PmdOperation      },
+        {
+            "type": "java",
+            "name": "Run Tests",
+            "request": "launch",
+            "mainClass": "org.junit.platform.console.ConsoleLauncher",
+            "args": [
+                "--details=verbose",
+                "--scan-classpath",
+                "--disable-banner",
+                "--disable-ansi-colors",
+                "--exclude-engine=junit-platform-suite",
+                "--exclude-engine=junit-vintage"]
+        }
+    ]
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..ba59365
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,15 @@
+{
+    "java.project.sourcePaths": [
+        "src/main/java",
+        "src/main/resources",
+        "src/test/java",
+        "src/bld/java"
+    ],
+    "java.configuration.updateBuildConfiguration": "automatic",
+    "java.project.referencedLibraries": [
+        "${HOME}/.rife2/dist/rife2-1.5.19.jar",
+        "lib/compile/*.jar",
+        "lib/runtime/*.jar",
+        "lib/test/*.jar"
+    ]
+}
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..49cc83d
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,177 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
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+      transformation or translation of a Source form, including but
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+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
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+      the terms of any separate license agreement you may have executed
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+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
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+
+   END OF TERMS AND CONDITIONS
diff --git a/bld b/bld
new file mode 100755
index 0000000..6dd6aea
--- /dev/null
+++ b/bld
@@ -0,0 +1,2 @@
+#!/usr/bin/env sh
+java -jar "$(dirname "$0")/lib/bld/bld-wrapper.jar" "$0" --build rife.bld.extension.PmdOperationBuild "$@"
\ No newline at end of file
diff --git a/bld.bat b/bld.bat
new file mode 100644
index 0000000..397d01b
--- /dev/null
+++ b/bld.bat
@@ -0,0 +1,4 @@
+@echo off
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+java -jar "%DIRNAME%/lib/bld/bld-wrapper.jar" "%0" --build rife.bld.extension.PmdOperationBuild %*
\ No newline at end of file
diff --git a/lib/bld/bld-wrapper.jar b/lib/bld/bld-wrapper.jar
new file mode 100644
index 0000000..48e3283
Binary files /dev/null and b/lib/bld/bld-wrapper.jar differ
diff --git a/lib/bld/bld-wrapper.properties b/lib/bld/bld-wrapper.properties
new file mode 100644
index 0000000..ab612ce
--- /dev/null
+++ b/lib/bld/bld-wrapper.properties
@@ -0,0 +1,6 @@
+bld.downloadExtensionJavadoc=false
+bld.downloadExtensionSources=true
+bld.extensions=
+bld.repositories=MAVEN_CENTRAL,RIFE2
+rife2.downloadLocation=
+rife2.version=1.5.19
diff --git a/src/bld/java/rife/bld/extension/PmdOperationBuild.java b/src/bld/java/rife/bld/extension/PmdOperationBuild.java
new file mode 100644
index 0000000..aeb1157
--- /dev/null
+++ b/src/bld/java/rife/bld/extension/PmdOperationBuild.java
@@ -0,0 +1,34 @@
+package rife.bld.extension;
+
+import rife.bld.Project;
+
+import java.util.List;
+
+import static rife.bld.dependencies.Repository.MAVEN_CENTRAL;
+import static rife.bld.dependencies.Repository.RIFE2_RELEASES;
+import static rife.bld.dependencies.Scope.*;
+
+public class PmdOperationBuild extends Project {
+    public PmdOperationBuild() {
+        pkg = "rife.bld.extension";
+        name = "PmdOperation";
+        mainClass = "rife.bld.extension.PmdOperationMain";
+        version = version(0, 9, 0, "SNAPSHOT");
+
+        downloadSources = true;
+        repositories = List.of(MAVEN_CENTRAL, RIFE2_RELEASES);
+        scope(compile)
+                .include(dependency("com.uwyn.rife2", "rife2", version(1, 5, 19)))
+                .include(dependency("net.sourceforge.pmd:pmd-java:6.55.0"));
+        scope(runtime)
+                .include(dependency("net.sourceforge.pmd:pmd:6.55.0"));
+        scope(test)
+                .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 9, 2)))
+                .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 9, 2)))
+                .include(dependency("org.assertj:assertj-joda-time:2.2.0"));
+    }
+
+    public static void main(String[] args) {
+        new PmdOperationBuild().start(args);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/rife/bld/extension/PmdOperation.java b/src/main/java/rife/bld/extension/PmdOperation.java
new file mode 100644
index 0000000..0884e6e
--- /dev/null
+++ b/src/main/java/rife/bld/extension/PmdOperation.java
@@ -0,0 +1,293 @@
+/*
+ *  Copyright 2023 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *       https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package rife.bld.extension;
+
+import net.sourceforge.pmd.PMDConfiguration;
+import net.sourceforge.pmd.PmdAnalysis;
+import net.sourceforge.pmd.RulePriority;
+import net.sourceforge.pmd.lang.LanguageVersion;
+import rife.bld.Project;
+import rife.bld.operations.AbstractOperation;
+
+import java.net.URI;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class PmdOperation extends AbstractOperation<PmdOperation> {
+    private static final  Logger LOGGER = Logger.getLogger(PmdOperation.class.getName());
+    private static final String PMD_DIR = "pmd";
+    public static final String RULESET_DEFAULT = "rulesets/java/quickstart.xml";
+    Path cache;
+    boolean debug;
+    String encoding = "UTF-8";
+    boolean failOnViolation;
+    Path ignoreFile;
+    boolean incrementalAnalysis = true;
+    List<Path> inputPaths = new ArrayList<>();
+    URI inputUri;
+    LanguageVersion languageVersion;
+    Path reportFile;
+    String reportFormat = "text";
+    RulePriority rulePriority = RulePriority.LOW;
+    List<String> ruleSets = new ArrayList<>();
+    boolean showSuppressed;
+    String suppressedMarker = "NOPMD";
+    int threads = 1;
+    private Project project;
+
+    public PmdOperation() {
+        super();
+    }
+
+    public PmdOperation(Project project) {
+        super();
+        this.project = project;
+
+        inputPaths.add(project.srcMainDirectory().toPath());
+        inputPaths.add(project.srcTestDirectory().toPath());
+        ruleSets.add(RULESET_DEFAULT);
+    }
+
+    /**
+     * Adds the path to a source file, or directory containing source files to analyze.
+     *
+     * @see #inputPaths(Path...)
+     */
+    public PmdOperation addInputPath(Path inputPath) {
+        inputPaths.add(inputPath);
+        return this;
+    }
+
+    /**
+     * Adds a new rule set path.
+     *
+     * @see #ruleSets(String...)
+     */
+    public PmdOperation addRuleSet(String ruleSet) {
+        ruleSets.add(ruleSet);
+        return this;
+    }
+
+    /**
+     * Sets the location of the cache file for incremental analysis.
+     */
+    public PmdOperation cache(Path cache) {
+        this.cache = cache;
+        return this;
+    }
+
+    /**
+     * Enables or disables debug logging mode.
+     */
+    public PmdOperation debug(boolean debug) {
+        this.debug = debug;
+        return this;
+    }
+
+    /**
+     * <p>Specifies the character set encoding of the source code files. The default is {@code UTF-8}.</p>
+     *
+     * <p>The valid values are the standard character sets of {@link java.nio.charset.Charset Charset}.</p>
+     */
+    public PmdOperation encoding(String encoding) {
+        this.encoding = encoding;
+        return this;
+    }
+
+    /**
+     * Performs the PMD code analysis operation.
+     *
+     * @throws Exception when an exception occurs during the execution
+     */
+    @Override
+    public void execute() throws Exception {
+        if (project == null) {
+            throw new IllegalArgumentException("ERROR: project required.");
+        }
+
+        var commandName = project.getCurrentCommandName();
+        performPmdAnalysis(commandName, initConfiguration(commandName));
+    }
+
+    /**
+     * Sets whether the build will continue on warnings.
+     */
+    public PmdOperation failOnViolation(boolean failOnViolation) {
+        this.failOnViolation = failOnViolation;
+        return this;
+    }
+
+    /**
+     * Forces a language to be used for all input files, irrespective of file names.
+     */
+    public PmdOperation forceLanguage(LanguageVersion languageVersion) {
+        this.languageVersion = languageVersion;
+        return this;
+    }
+
+    /**
+     * Sets the path to the file containing a list of files to ignore, one path per line.
+     */
+    public PmdOperation ignoreFile(Path ignoreFile) {
+        this.ignoreFile = ignoreFile;
+        return this;
+    }
+
+    /**
+     * Enables or disables incremental analysis.
+     */
+    public PmdOperation incrementalAnalysis(boolean incrementalAnalysis) {
+        this.incrementalAnalysis = incrementalAnalysis;
+        return this;
+    }
+
+    public PMDConfiguration initConfiguration(String commandName) {
+        PMDConfiguration config = new PMDConfiguration();
+        if (cache == null && project != null && incrementalAnalysis) {
+            config.setAnalysisCacheLocation(
+                    Paths.get(project.buildDirectory().getPath(), PMD_DIR, PMD_DIR + "-cache").toFile().getAbsolutePath());
+        } else if (cache != null) {
+            config.setAnalysisCacheLocation(cache.toFile().getAbsolutePath());
+        }
+        config.setDebug(debug);
+        config.setFailOnViolation(failOnViolation);
+        if (languageVersion != null) {
+            config.setForceLanguageVersion(languageVersion);
+        }
+        if (ignoreFile != null) {
+            config.setIgnoreFilePath(ignoreFile);
+        }
+        config.setIgnoreIncrementalAnalysis(!incrementalAnalysis);
+        if (inputPaths.isEmpty()) {
+            throw new IllegalArgumentException(commandName + ": InputPaths required.");
+        } else {
+            config.setInputPathList(inputPaths);
+        }
+        if (inputUri != null) {
+            config.setInputUri(inputUri);
+        }
+        config.setMinimumPriority(rulePriority);
+
+        if (project != null) {
+            config.setReportFile(Objects.requireNonNullElseGet(reportFile,
+                    () -> Paths.get(project.buildDirectory().getPath(), PMD_DIR, PMD_DIR + "-report." + reportFormat)));
+        } else {
+            config.setReportFile(reportFile);
+        }
+
+        config.setReportFormat(reportFormat);
+        config.setRuleSets(ruleSets);
+        config.setShowSuppressedViolations(showSuppressed);
+        config.setSourceEncoding(encoding);
+        config.setSuppressMarker(suppressedMarker);
+        config.setThreads(threads);
+
+        return config;
+    }
+
+    /**
+     * Sets the to source files, or directories containing source files to analyze.
+     */
+    public PmdOperation inputPaths(Path... inputPath) {
+        inputPaths.clear();
+        inputPaths.addAll(List.of(inputPath));
+        return this;
+    }
+
+    public int performPmdAnalysis(String commandName, PMDConfiguration config) throws RuntimeException {
+        var pmd = PmdAnalysis.create(config);
+        var report = pmd.performAnalysisAndCollectReport();
+        if (LOGGER.isLoggable(Level.INFO)) {
+            LOGGER.info(String.format("[%s] ruleSets%s", commandName, ruleSets));
+        }
+        var numErrors = report.getViolations().size();
+        if (numErrors > 0) {
+            var msg = String.format(
+                    "[%s] %d rule violations were found. See the report at: %s", commandName, numErrors,
+                    config.getReportFilePath().toUri());
+            for (var v : report.getViolations()) {
+                if (LOGGER.isLoggable(Level.WARNING)) {
+                    LOGGER.warning(String.format("[%s] %s:%d\n\t%s (%s)\n\t\t--> %s", commandName,
+                            Paths.get(v.getFilename()).toUri(), v.getBeginLine(), v.getRule().getName(), v.getRule().getExternalInfoUrl(), v.getDescription()));
+                }
+            }
+            if (config.isFailOnViolation()) {
+                throw new RuntimeException(msg); // NOPMD
+            } else {
+                if (LOGGER.isLoggable(Level.WARNING)) {
+                    LOGGER.warning(msg);
+                }
+            }
+        }
+        return numErrors;
+    }
+
+    /**
+     * Sets the output format of the analysis report. The default is {@code text}.
+     */
+    public PmdOperation reportFormat(String reportFormat) {
+        this.reportFormat = reportFormat;
+        return this;
+    }
+
+    /**
+     * Sets the rule set path(s).
+     */
+    public PmdOperation ruleSets(String... ruleSet) {
+        ruleSets.clear();
+        ruleSets.addAll(Arrays.asList(ruleSet));
+        return this;
+    }
+
+    /**
+     * Enables or disables adding the suppressed rule violations to the report.
+     */
+    public PmdOperation showSuppressed(boolean showSuppressed) {
+        this.showSuppressed = showSuppressed;
+        return this;
+    }
+
+    /**
+     * Specifies the comment token that marks lines which should be ignored. The default is {@code NOPMD}.
+     */
+    public PmdOperation suppressedMarker(String suppressedMarker) {
+        this.suppressedMarker = suppressedMarker;
+        return this;
+    }
+
+    /**
+     * Sets the number of threads to be used. The default is {code 1}.
+     */
+    public PmdOperation threads(int threads) {
+        this.threads = threads;
+        return this;
+    }
+
+    /**
+     * Set the input URI to process for source code objects.
+     */
+    public PmdOperation uri(URI inputUri) {
+        this.inputUri = inputUri;
+        return this;
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/rife/bld/extension/PmdOperationTest.java b/src/test/java/rife/bld/extension/PmdOperationTest.java
new file mode 100644
index 0000000..2f0cb82
--- /dev/null
+++ b/src/test/java/rife/bld/extension/PmdOperationTest.java
@@ -0,0 +1,64 @@
+/*
+ *  Copyright 2023 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *       https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package rife.bld.extension;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Paths;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+
+/**
+ * PmdOperationTest class
+ *
+ * @author <a href="https://erik.thauvin.net/">Erik C. Thauvin</a>
+ * @since 1.0
+ */
+public class PmdOperationTest {
+    static final PmdOperation PMD_OPERATION = new PmdOperation();
+
+    @BeforeAll
+    public static void initializeOperation() {
+        PMD_OPERATION.inputPaths = List.of(Paths.get("src/main"));
+        PMD_OPERATION.reportFile = Paths.get("build", "pmd", "pmd-test-report.txt");
+        PMD_OPERATION.cache = Paths.get("build", "pmd", "pmd-cache");
+        PMD_OPERATION.failOnViolation = false;
+    }
+
+    @Test
+    void testConfigFile() {
+        var pmd = PMD_OPERATION.ruleSets("src/test/resources/pmd.xml");
+        assertThat(pmd.performPmdAnalysis("test", pmd.initConfiguration("pmd")))
+                .as("no errors").isEqualTo(0);
+    }
+
+    @Test
+    void testEmptyRuleSets() {
+        var pmd = PMD_OPERATION.ruleSets("");
+        assertThat(pmd.performPmdAnalysis("test", pmd.initConfiguration("pmd")))
+                .as("no errors").isEqualTo(0);
+    }
+
+    @Test
+    void testPmdOperation() {
+        assertThat(PMD_OPERATION.performPmdAnalysis("test", PMD_OPERATION.initConfiguration("pmd")))
+                .as("no errors").isEqualTo(0);
+    }
+}
diff --git a/src/test/resources/pmd.xml b/src/test/resources/pmd.xml
new file mode 100644
index 0000000..c4c6617
--- /dev/null
+++ b/src/test/resources/pmd.xml
@@ -0,0 +1,112 @@
+<?xml version="1.0"?>
+<ruleset name="test"
+         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">
+    <description>Erik's Ruleset</description>
+    <!-- BEST PRACTICES -->
+    <rule ref="category/java/bestpractices.xml">
+        <exclude name="AvoidPrintStackTrace"/>
+        <exclude name="JUnit4TestShouldUseTestAnnotation"/>
+        <exclude name="JUnitTestContainsTooManyAsserts"/>
+    </rule>
+
+    <rule ref="category/java/bestpractices.xml/MissingOverride">
+        <properties>
+            <property name="violationSuppressXPath"
+                      value="//MethodDeclaration[@Name='hashCode' or @Name='equals' or @Name='toString']"/>
+        </properties>
+    </rule>
+
+
+    <!-- CODE STYLE -->
+    <rule ref="category/java/codestyle.xml">
+        <exclude name="AtLeastOneConstructor"/>
+        <exclude name="ClassNamingConventions"/>
+        <exclude name="CommentDefaultAccessModifier"/>
+        <exclude name="ConfusingTernary"/>
+        <exclude name="DefaultPackage"/>
+        <exclude name="FieldNamingConventions"/>
+        <exclude name="LocalVariableCouldBeFinal"/>
+        <exclude name="LongVariable"/>
+        <exclude name="MethodArgumentCouldBeFinal"/>
+        <exclude name="OnlyOneReturn"/>
+        <exclude name="PackageCase"/>
+        <exclude name="ShortClassName"/>
+        <exclude name="ShortMethodName"/>
+        <exclude name="ShortVariable"/>
+        <exclude name="UseUnderscoresInNumericLiterals"/>
+        <exclude name="UselessParentheses"/>
+    </rule>
+
+    <!-- DESIGN -->
+    <rule ref="category/java/design.xml">
+        <exclude name="AvoidCatchingGenericException"/>
+        <exclude name="AvoidDeeplyNestedIfStmts"/>
+        <exclude name="AvoidUncheckedExceptionsInSignatures"/>
+        <exclude name="CognitiveComplexity"/>
+        <exclude name="CyclomaticComplexity"/>
+        <exclude name="ExcessiveClassLength"/>
+        <exclude name="ExcessiveMethodLength"/>
+        <exclude name="ExcessiveParameterList"/>
+        <exclude name="ExcessivePublicCount"/>
+        <exclude name="GodClass"/>
+        <exclude name="LawOfDemeter"/>
+        <exclude name="LoosePackageCoupling"/>
+        <exclude name="NPathComplexity"/>
+        <exclude name="NcssCount"/>
+        <exclude name="TooManyFields"/>
+        <exclude name="TooManyMethods"/>
+        <exclude name="UseObjectForClearerAPI"/>
+    </rule>
+
+    <!-- DOCUMENTATION -->
+    <rule ref="category/java/documentation.xml">
+        <exclude name="CommentRequired"/>
+        <exclude name="CommentSize"/>
+    </rule>
+
+    <!-- ERROR PRONE -->
+    <rule ref="category/java/errorprone.xml">
+        <exclude name="AssignmentInOperand"/>
+        <exclude name="AvoidCatchingNPE"/>
+        <exclude name="AvoidDuplicateLiterals"/>
+        <exclude name="AvoidFieldNameMatchingMethodName"/>
+        <exclude name="AvoidFieldNameMatchingTypeName"/>
+        <exclude name="AvoidLiteralsInIfCondition"/>
+        <exclude name="EmptyCatchBlock"/>
+        <exclude name="NullAssignment"/>
+    </rule>
+
+    <rule ref="category/java/errorprone.xml/AssignmentInOperand">
+        <properties>
+            <property name="allowWhile" value="true"/>
+            <property name="allowFor" value="true"/>
+            <property name="allowIf" value="true"/>
+        </properties>
+    </rule>
+    <rule ref="category/java/errorprone.xml/AvoidDuplicateLiterals">
+        <properties>
+            <property name="skipAnnotations" value="true"/>
+        </properties>
+    </rule>
+    <rule ref="category/java/errorprone.xml/EmptyCatchBlock">
+        <properties>
+            <property name="allowExceptionNameRegex">
+                <value>^ignore$</value>
+            </property>
+        </properties>
+    </rule>
+
+    <!-- MULTITHREADING -->
+    <rule ref="category/java/multithreading.xml">
+    </rule>
+
+    <!-- PERFORMANCE -->
+    <rule ref="category/java/performance.xml">
+    </rule>
+
+    <!-- SECURITY -->
+    <rule ref="category/java/security.xml">
+    </rule>
+</ruleset>