/*

 * Copyright (c) 2016, 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  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  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  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 java.net.http;

import java.net.URI;

import java.net.URISyntaxException;

import java.nio.Buffer;

import java.nio.ByteBuffer;

import java.util.Arrays;

final class WSUtils {

    private WSUtils() { }

    static final System.Logger logger = System.getLogger("java.net.http.WebSocket");

    static final ByteBuffer EMPTY_BYTE_BUFFER = ByteBuffer.allocate(0);

    //

    // Helps to trim long names (packages, nested/inner types) in logs/toString

    //

    static String toStringSimple(Object o) {

        return o.getClass().getSimpleName() + "@" +

                Integer.toHexString(System.identityHashCode(o));

    }

    //

    // 1. It adds a number of remaining bytes;

    // 2. Standard Buffer-type toString for CharBuffer (since it adheres to the

    // contract of java.lang.CharSequence.toString() which is both not too

    // useful and not too private)

    //

    static String toString(Buffer b) {

        return toStringSimple(b)

                + "[pos=" + b.position()

                + " lim=" + b.limit()

                + " cap=" + b.capacity()

                + " rem=" + b.remaining() + "]";

    }

    static String toString(CharSequence s) {

        return s == null

                ? "null"

                : toStringSimple(s) + "[len=" + s.length() + "]";

    }

    static String dump(Object... objects) {

        return Arrays.toString(objects);

    }

    static String webSocketSpecViolation(String section, String detail) {

        return "RFC 6455 " + section + " " + detail;

    }

}