/* 
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 * 
 *     http://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.
 */

/*
 * Imported by CG 20090322 based on Apache Harmony ("enhanced") revision 699259.
 * Removed references to CodeSigner, because this was new in Java 1.5.
 * Stripped-down version for vm-cmp/jar/none CG 20090628.
 */

package java.util.jar;

import java.io.IOException;
import java.util.zip.ZipEntry;
import java.security.cert.Certificate;

/**
 * JarEntry represents an entry in a JAR file.
 * 
 * @see JarFile
 * @see JarInputStream
 */
public class JarEntry extends ZipEntry {
    private Attributes attributes;

    JarFile parentJar;
    JarVerifier verifier;

    private boolean isFactoryChecked = false;

    /**
     * Create a new JarEntry named name
     * 
     * @param name
     *            The name of the new JarEntry
     */
    public JarEntry(String name) {
        super(name);
    }

    /**
     * Create a new JarEntry using the values obtained from entry.
     * 
     * @param entry
     *            The ZipEntry to obtain values from.
     */
    public JarEntry(ZipEntry entry) {
        super(entry);
    }

    /**
     * Returns the Attributes object associated with this entry or null if none
     * exists.
     * 
     * @return java.util.jar.Attributes Attributes for this entry
     * @exception java.io.IOException
     *                If an error occurs obtaining the Attributes
     */
    public Attributes getAttributes() throws IOException {
        if (attributes != null || parentJar == null) {
            return attributes;
        }
        Manifest manifest = parentJar.getManifest();
        if (manifest == null) {
            return null;
        }
        return attributes = manifest.getAttributes(getName());
    }

    /**
     ** Stub.
     */
    public Certificate[] getCertificates() {
      throw new RuntimeException("method not implemented because jar signing not enabled");
    }

    void setAttributes(Attributes attrib) {
        attributes = attrib;
    }

    /**
     * Create a new JarEntry using the values obtained from je.
     * 
     * @param je
     *            The JarEntry to obtain values from
     */
    public JarEntry(JarEntry je) {
        super(je);
        parentJar = je.parentJar;
        attributes = je.attributes;
    }

}