/*

 * Copyright 1997-2003 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.security.x509;

import java.io.IOException;

import java.util.Vector;

import java.util.List;

import java.util.Collections;

import sun.security.util.*;

/**

 * This class defines the certificate policy set ASN.1 object.

 *

 * @author Amit Kapoor

 * @author Hemma Prafullchandra

 */

public class CertificatePolicySet {

    private final Vector<CertificatePolicyId> ids;

    /**

     * The default constructor for this class.

     *

     * @param ids the sequence of CertificatePolicyId's.

     */

    public CertificatePolicySet(Vector<CertificatePolicyId> ids) {

        this.ids = ids;

    }

    /**

     * Create the object from the DerValue.

     *

     * @param in the passed DerInputStream.

     * @exception IOException on decoding errors.

     */

    public CertificatePolicySet(DerInputStream in) throws IOException {

        ids = new Vector<CertificatePolicyId>();

        DerValue[] seq = in.getSequence(5);

        for (int i = 0; i < seq.length; i++) {

            CertificatePolicyId id = new CertificatePolicyId(seq[i]);

            ids.addElement(id);

        }

    }

    /**

     * Return printable form of the object.

     */

    public String toString() {

        String s = "CertificatePolicySet:[\n"

                 + ids.toString()

                 + "]\n";

        return (s);

    }

    /**

     * Encode the policy set to the output stream.

     *

     * @param out the DerOutputStream to encode the data to.

     */

    public void encode(DerOutputStream out) throws IOException {

        DerOutputStream tmp = new DerOutputStream();

        for (int i = 0; i < ids.size(); i++) {

            ((CertificatePolicyId)ids.elementAt(i)).encode(tmp);

        }

        out.write(DerValue.tag_Sequence,tmp);

    }

    /**

     * Return the sequence of CertificatePolicyIds.

     *

     * @return A List containing the CertificatePolicyId objects.

     *

     */

    public List<CertificatePolicyId> getCertPolicyIds() {

        return Collections.unmodifiableList(ids);

    }

}