1/*
2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25package jdk.incubator.http.internal.hpack;
26
27import java.nio.ByteBuffer;
28
29final class SizeUpdateWriter implements BinaryRepresentationWriter {
30
31    private final IntegerWriter intWriter = new IntegerWriter();
32    private int maxSize;
33    private boolean tableUpdated;
34
35    SizeUpdateWriter() { }
36
37    SizeUpdateWriter maxHeaderTableSize(int size) {
38        intWriter.configure(size, 5, 0b0010_0000);
39        this.maxSize = size;
40        return this;
41    }
42
43    @Override
44    public boolean write(HeaderTable table, ByteBuffer destination) {
45        if (!tableUpdated) {
46            table.setMaxSize(maxSize);
47            tableUpdated = true;
48        }
49        return intWriter.write(destination);
50    }
51
52    @Override
53    public BinaryRepresentationWriter reset() {
54        intWriter.reset();
55        maxSize = -1;
56        tableUpdated = false;
57        return this;
58    }
59}
60