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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
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/*
 * Copyright (c) 2015, 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.
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package org.glassfish.grizzly.http2.hpack;


import org.glassfish.grizzly.Buffer;

final class LiteralWithIndexingWriter extends IndexNameValueWriter {

    private boolean tableUpdated;

    private CharSequence name;
    private CharSequence value;
    private int index;

    LiteralWithIndexingWriter() {
        super(0b0100_0000, 6);
    }

    @Override
    LiteralWithIndexingWriter index(int index) {
        super.index(index);
        this.index = index;
        return this;
    }

    @Override
    LiteralWithIndexingWriter name(CharSequence name, boolean useHuffman) {
        super.name(name, useHuffman);
        this.name = name;
        return this;
    }

    @Override
    LiteralWithIndexingWriter value(CharSequence value, boolean useHuffman) {
        super.value(value, useHuffman);
        this.value = value;
        return this;
    }

    @Override
    public boolean write(HeaderTable table, Buffer destination) {
        if (!tableUpdated) {
            CharSequence n;
            if (indexedRepresentation) {
                n = table.get(index).name;
            } else {
                n = name;
            }
            table.put(n, value);
            tableUpdated = true;
        }
        return super.write(table, destination);
    }

    @Override
    public IndexNameValueWriter reset() {
        tableUpdated = false;
        name = null;
        value = null;
        index = -1;
        return super.reset();
    }
}