Cleanup JarSelector and add additional API to add options.

  - This Allows artifacts to specify dependencies that they do not bundle themselves.
  - Allows platforms such as Forge to ship default options that mods won't have to bundle.
  - Moves the Function arguments in JarSelector to abstract methods.
  See #11 and the tests for more information.

Make GSON serialize accessible
Restructure demo projects to show multiple scenarios.

Author: LexManos

build.gradle

@@ -46,6 +46,10 @@ subprojects {
     ((TestingExtension) testing).tap {
         suites.named('test', JvmTestSuite) {
             useJUnitJupiter(libs.versions.junit)
+            
+            dependencies {
+                compileOnly libs.nulls
+            }
 
             targets.configureEach {
                 testTask.configure {

jarjar-gradle-demo/build.gradle

@@ -1,5 +1,6 @@
 plugins {
     id 'java'
+    id 'eclipse'
     id 'net.minecraftforge.jarjar'
 }
 
@@ -11,7 +12,7 @@ repositories {
 jarJar.register()
 
 dependencies {
-    implementation(jarJar(('org.apache.maven:maven-artifact:3.9.11'))) {
+    implementation(jarJar('org.apache.maven:maven-artifact:3.9.11')) {
         transitive = false
         // this configures jarjar metadata.
         jarJar.configure(it) {
@@ -20,13 +21,36 @@ dependencies {
         }
     }
 
-    jarJar(project('example-project')) {
+    jarJar(project(':jarjar-example-dep')) {
         jarJar.configure(it) {
             module {
                 group = 'me.jonathing'
                 name = 'example'
             }
-            version = '1.0.0'
+            version = '1'
         }
     }
+    compileOnly project(':jarjar-example-nested-outer') // Force the sub-project to build when I run build, just convenience
+    compileOnly project(':jarjar-example-mod-outer') // Force the sub-project to build when I run build, just convenience
 }
+
+subprojects {
+    afterEvaluate { child ->
+        // Make all sub-projects put their jars in the root project folder, easier to locate
+        tasks.withType(Jar) {
+            destinationDirectory = rootProject.layout.buildDir.dir('libs')
+        }
+        if (tasks.findByName('jarJar')) {
+            rootProject.tasks.named('jarJar') {
+                dependsOn(child.tasks.named('jarJar'))
+            }
+        }
+        // Allow for bulk cleaning
+        tasks.named('clean') {
+            dependsOn(tasks.named('cleanEclipse'))
+        }
+        parent.tasks.named('clean') {
+            dependsOn(child.tasks.named('clean'))
+        }
+    }
+}

jarjar-gradle-demo/example-project.jar

@@ -0,0 +1,9 @@
+plugins {
+    id 'java'
+    id 'eclipse'
+}
+
+group = 'net.minecraftforge'
+version = '2.0'
+
+java.toolchain.languageVersion = JavaLanguageVersion.of(9) // 9 so I can make a module-info

jarjar-gradle-demo/example-project/build.gradle

@@ -0,0 +1,3 @@
+module jarjar.dep {
+
+}

jarjar-gradle-demo/jarjar-example-dep-2/build.gradle

@@ -0,0 +1,13 @@
+plugins {
+    id 'java'
+    id 'eclipse'
+}
+
+group = 'net.minecraftforge'
+version = '1.0'
+
+tasks.named('jar', Jar).configure {
+    manifest {
+        attributes('Automatic-Module-Name': 'jarjar.dep')
+    }
+}

…t/src/main/java/com/example/Example.java …2/src/main/java/com/example/Example.javajarjar-gradle-demo/example-project/src/main/java/com/example/Example.java renamed to jarjar-gradle-demo/jarjar-example-dep-2/src/main/java/com/example/Example.java jarjar-gradle-demo/example-project/src/main/java/com/example/Example.java renamed to jarjar-gradle-demo/jarjar-example-dep-2/src/main/java/com/example/Example.java

@@ -0,0 +1,7 @@
+package com.example;
+
+public class Example {
+    public static void main(String[] args) {
+        System.out.println("Hello World!");
+    }
+}