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<!-- Configures Proguard obfuscation tool to generate an
     obfuscated version of the JAR file that replaces the
     default unobfuscated JAR.
     
     -- author: Emily Mabrey @ https://stackoverflow.com/questions/34706466/how-do-i-use-proguard-obfuscation-while-building-a-maven-plugin-package
-->
<plugin>
    <groupId>com.github.wvengen</groupId>
    <artifactId>proguard-maven-plugin</artifactId>
    <version>2.0.13</version>
    <executions>
        <execution>
            <id>obfuscation-packaging</id>
            <phase>package</phase>
            <goals>
                <goal>proguard</goal>
            </goals>
            <configuration>
                <proguardVersion>${tool.proguard.version}</proguardVersion>
                <obfuscate>true</obfuscate>
                <attach>true</attach>
                <appendClassifier>false</appendClassifier>
                <addMavenDescriptor>true</addMavenDescriptor>
                <injar>${project.build.finalName}.jar</injar>
                <injarNotExistsSkip>true</injarNotExistsSkip>
                <libs>
                    <lib>${java.home}/lib/rt.jar</lib>
                </libs>

                <options>
                    <option>-keepdirectories</option>
                    <option>-keeppackagenames org.apache.maven.plugin.my.MyMojo</option>
                    <option>-keepnames class * implements org.apache.maven.plugin.AbstractMojo</option>
                    <option>-keepclassmembers class * implements org.apache.maven.plugin.AbstractMojo {
                        private <![CDATA[<fields>]]>;
                        private <![CDATA[<methods>]]>;
                    }
                    </option>
                    <option>-keepparameternames</option>
                    <option>-renamesourcefileattribute SourceFile</option>
                    <option>-keepattributes Exceptions,InnerClasses,Signature,Deprecated,
                        SourceFile,LineNumberTable,*Annotation*,EnclosingMethod
                    </option>
                    <option>-target 1.8</option>
                    <option>-keep public class * {
                        public protected *;
                        }
                    </option>
                    <option>-keepclassmembernames class * {
                        java.lang.Class class$(java.lang.String);
                        java.lang.Class class$(java.lang.String, boolean);
                        }
                    </option>
                    <option>-keepclasseswithmembernames,includedescriptorclasses class * {
                        native <![CDATA[<methods>]]>;
                        }
                    </option>
                    <option>-keepclassmembers,allowoptimization enum * {
                        public static **[] values();
                        public static ** valueOf(java.lang.String);
                        }
                    </option>
                    <option>-keepclassmembers class * implements java.io.Serializable {
                        static final long serialVersionUID;
                        private static final java.io.ObjectStreamField[] serialPersistentFields;
                        private void writeObject(java.io.ObjectOutputStream);
                        private void readObject(java.io.ObjectInputStream);
                        java.lang.Object writeReplace();
                        java.lang.Object readResolve();
                        }
                    </option>
                </options>
            </configuration>
        </execution>
    </executions>
    <dependencies>
        <dependency>
            <groupId>net.sf.proguard</groupId>
            <artifactId>proguard-base</artifactId>
            <version>${tool.proguard.version}</version>
        </dependency>
    </dependencies>
</plugin>