1 /*
   2  * Copyright (c) 2015, 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  */
  25 package jdk.incubator.http.internal.hpack;
  26 
  27 import java.nio.ByteBuffer;
  28 
  29 final class LiteralWithIndexingWriter extends IndexNameValueWriter {
  30 
  31     private boolean tableUpdated;
  32 
  33     private CharSequence name;
  34     private CharSequence value;
  35     private int index;
  36 
  37     LiteralWithIndexingWriter() {
  38         super(0b0100_0000, 6);
  39     }
  40 
  41     @Override
  42     LiteralWithIndexingWriter index(int index) {
  43         super.index(index);
  44         this.index = index;
  45         return this;
  46     }
  47 
  48     @Override
  49     LiteralWithIndexingWriter name(CharSequence name, boolean useHuffman) {
  50         super.name(name, useHuffman);
  51         this.name = name;
  52         return this;
  53     }
  54 
  55     @Override
  56     LiteralWithIndexingWriter value(CharSequence value, boolean useHuffman) {
  57         super.value(value, useHuffman);
  58         this.value = value;
  59         return this;
  60     }
  61 
  62     @Override
  63     public boolean write(HeaderTable table, ByteBuffer destination) {
  64         if (!tableUpdated) {
  65             CharSequence n;
  66             if (indexedRepresentation) {
  67                 n = table.get(index).name;
  68             } else {
  69                 n = name;
  70             }
  71             table.put(n, value);
  72             tableUpdated = true;
  73         }
  74         return super.write(table, destination);
  75     }
  76 
  77     @Override
  78     public IndexNameValueWriter reset() {
  79         tableUpdated = false;
  80         name = null;
  81         value = null;
  82         index = -1;
  83         return super.reset();
  84     }
  85 }