apply plugin: 'java'

repositories {
  mavenCentral()
}

dependencies {
  compile 'org.codehaus.groovy:groovy-all:2.1.0'
  compile 'org.scala-lang:scala-library:2.10.0'
}

sourceSets {
  integTest {}
}

configurations {
  integTestCompile.extendsFrom testCompile
  integTestRuntime.extendsFrom testRuntime
}

task integTest(type: Test) {
  testClassesDir = sourceSets.integTest.output.classesDir
  classpath = sourceSets.integTest.runtimeClasspath
}

package org.jetbrains.plugins.gradle;

import org.gradle.tooling.*;
import org.gradle.tooling.internal.consumer.DefaultGradleConnector;
import org.gradle.tooling.model.idea.*;

import java.io.File;
import java.util.Date;
import java.util.concurrent.TimeUnit;

/**
 * @author Denis Zhdanov
 * @since 12/8/11 5:07 PM
 */
public class GradleStartClass {

  private static final String GRADLE_TO_USE       = "/home/denis/dev/gradle/gradle-1.4";
  private static final String GRADLE_PROJECT_PATH = "/home/denis/Downloads/gradle-content-root";

  public static void main(String[] args) throws InterruptedException {
    System.out.println("GRADLE_USER_HOME=" + System.getenv("GRADLE_USER_HOME"));
    showContentRoots();
//    showDependencies(false);
  }

  private static void showContentRoots() {
    IdeaProject project = getProject(false);
    for (IdeaModule module : project.getModules()) {
      System.out.printf("    -----------------> Module %s <----------------%n", module.getName());
      for (IdeaContentRoot root : module.getContentRoots()) {
        System.out.printf("    content root '%s'%n", root.getRootDirectory().getAbsolutePath());
        for (IdeaSourceDirectory sourceDirectory : root.getSourceDirectories()) {
          System.out.printf("        source dir: '%s'%n", sourceDirectory.getDirectory().getAbsolutePath());
        }

      }
    }
  }

  private static void showDependencies(boolean useWrapper) {
    IdeaProject project = getProject(useWrapper);
    System.out.println("-----------------> Listing modules <----------------");
    for (IdeaModule module : project.getModules()) {
      System.out.printf("    -----------------> Module %s <----------------%n", module.getName());
      for (IdeaDependency dependency : module.getDependencies()) {
        System.out.printf("Dependency: %s, scope: %s%n", dependency, dependency.getScope());
      }
    }
    System.out.println("-----------------> Finishing <----------------");
  }

  private static IdeaProject getProject(boolean useWrapper) {
    GradleConnector connector = GradleConnector.newConnector();
    if (!useWrapper) {
      connector.useInstallation(new File(GRADLE_TO_USE));
    }
    ((DefaultGradleConnector)connector).daemonMaxIdleTime(10000, TimeUnit.MILLISECONDS);
    connector.forProjectDirectory(new File(GRADLE_PROJECT_PATH));
    ProjectConnection connection = connector.connect();
    ModelBuilder<? extends IdeaProject> modelBuilder = connection.model(IdeaProject.class);
    System.out.println(new Date() + ": Starting project resolve");
    IdeaProject result = modelBuilder.get();
    System.out.println(new Date() + ": Project resolve is complete");
    return result;
  }
}

...
-----------------> Module gradle-content-root <----------------
    content root '/home/denis/Downloads/gradle-content-root'
        source dir: '/home/denis/Downloads/gradle-content-root/src/main/resources'
        source dir: '/home/denis/Downloads/gradle-content-root/src/main/java'