/*

 * Copyright (c) 2005, Oracle and/or its affiliates. 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.  Oracle designates this

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

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.net.httpserver;

import java.util.*;

import com.sun.net.httpserver.*;

import com.sun.net.httpserver.spi.*;

class ContextList {

    final static int MAX_CONTEXTS = 50;

    LinkedList<HttpContextImpl> list = new LinkedList<HttpContextImpl>();

    public synchronized void add (HttpContextImpl ctx) {

        assert ctx.getPath() != null;

        list.add (ctx);

    }

    public synchronized int size () {

        return list.size();

    }

   /* initially contexts are located only by protocol:path.

    * Context with longest prefix matches (currently case-sensitive)

    */

    synchronized HttpContextImpl findContext (String protocol, String path) {

        return findContext (protocol, path, false);

    }

    synchronized HttpContextImpl findContext (String protocol, String path, boolean exact) {

        protocol = protocol.toLowerCase();

        String longest = "";

        HttpContextImpl lc = null;

        for (HttpContextImpl ctx: list) {

            if (!ctx.getProtocol().equals(protocol)) {

                continue;

            }

            String cpath = ctx.getPath();

            if (exact && !cpath.equals (path)) {

                continue;

            } else if (!exact && !path.startsWith(cpath)) {

                continue;

            }

            if (cpath.length() > longest.length()) {

                longest = cpath;

                lc = ctx;

            }

        }

        return lc;

    }

    public synchronized void remove (String protocol, String path)

        throws IllegalArgumentException

    {

        HttpContextImpl ctx = findContext (protocol, path, true);

        if (ctx == null) {

            throw new IllegalArgumentException ("cannot remove element from list");

        }

        list.remove (ctx);

    }

    public synchronized void remove (HttpContextImpl context)

        throws IllegalArgumentException

    {

        for (HttpContextImpl ctx: list) {

            if (ctx.equals (context)) {

                list.remove (ctx);

                return;

            }

        }

        throw new IllegalArgumentException ("no such context in list");

    }

}