createJar(classGraph, classesDir, manifestFile, jarFile)

        return jarFile
    }

    private
    fun createJar(classGraph: ClassGraph, classesDir: File, manifestFile: File, jarFile: File) {
        try {
            JarOutputStream(BufferedOutputStream(FileOutputStream(jarFile))).use { jarOutputStream ->
                if (manifestFile.exists()) {

        throws IOException {
      JarFile jarFile;
      try {
        jarFile = new JarFile(file);
      } catch (IOException e) {
        // Not a jar file
        return;
      }
      try {
        for (File path : getClassPathFromManifest(file, jarFile.getManifest())) {
          // We only scan each file once independent of the classloader that file might be

import java.io.IOException
import java.util.Properties
import java.util.jar.JarEntry
import java.util.jar.JarFile


data class PluginEntry(val pluginId: String, val implementationClass: String)


fun pluginEntriesFrom(jar: File): List<PluginEntry> = try {
    JarFile(jar, false).use { jarFile ->
        jarFile.entries().asSequence().filter {
            isGradlePluginPropertiesFile(it)
        }.map { pluginEntry ->

        for (final WebResource possibleJar : possibleJars) {
            if (possibleJar.isFile() && possibleJar.getName().endsWith(".jar")) {
                try (final JarFile jarFile = new JarFile(possibleJar.getCanonicalPath())) {
                    final Manifest manifest = jarFile.getManifest();
                    if (manifest != null && manifest.getEntries() != null) {
                        final Attributes attributes = manifest.getMainAttributes();

         * @param rootDir
         *            ルートディレクトリ
         */
        public JarFileTraverser(final JarFile jarFile, final String rootPackage, final String rootDir) {
            this.jarFile = jarFile;
            this.rootPackage = rootPackage;
            this.rootDir = rootDir;
        }

        /**
         * インスタンスを構築します。
         *
         * @param url
         *            Jarファイルを表すURL

                && artifact.getPath() != null) {
            Path artifactPath = artifact.getPath();
            if (Files.isRegularFile(artifactPath)) {
                try (JarFile artifactJar = new JarFile(artifactPath.toFile(), false)) {
                    ZipEntry pluginDescriptorEntry = artifactJar.getEntry(PLUGIN_DESCRIPTOR_LOCATION);

                    if (pluginDescriptorEntry != null) {

    private val unshadedPackages: Set<String>,
    private val ignorePackages: Set<String>
) {

    fun analyze(jarFile: File, classesDir: File, manifestFile: File, buildReceipt: File): ClassGraph {
        val classGraph = classGraph()

        val jarUri = URI.create("jar:${jarFile.toPath().toUri()}")
        FileSystems.newFileSystem(jarUri, emptyMap<String, Any>()).use { jarFileSystem ->

        }
    }

    private
    fun openJarFile(file: File) =
        openJars.computeIfAbsent(file, ::JarFile)

    override fun close() {
        openJars.values.forEach(JarFile::close)
    }
}


/**
 * See https://docs.oracle.com/javase/8/docs/technotes/tools/findingclasses.html#userclass
 */
private
val File.isClassPathArchive

        assertThat(set.contains(TestCase.class.getName()), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testFromClass_JarFile() throws Exception {
        final Traverser traverser = TraversalUtil.getTraverser(TestCase.class);
        assertThat(traverser, is(notNullValue()));
        assertThat(traverser instanceof JarFileTraverser, is(true));

                                            <label for="jarFile" class="col-md-3 text-sm-right col-form-label"><la:message
                                                    key="labels.plugin_jar_file"/></label>
                                            <div class="col-md-9 text-sm-right col-form-label">
                                                <input id="jarFile" type="file" name="jarFile" class="form-control-file"/>