1/****************************************************************
2 * Licensed to the Apache Software Foundation (ASF) under one   *
3 * or more contributor license agreements.  See the NOTICE file *
4 * distributed with this work for additional information        *
5 * regarding copyright ownership.  The ASF licenses this file   *
6 * to you under the Apache License, Version 2.0 (the            *
7 * "License"); you may not use this file except in compliance   *
8 * with the License.  You may obtain a copy of the License at   *
9 *                                                              *
10 *   http://www.apache.org/licenses/LICENSE-2.0                 *
11 *                                                              *
12 * Unless required by applicable law or agreed to in writing,   *
13 * software distributed under the License is distributed on an  *
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
15 * KIND, either express or implied.  See the License for the    *
16 * specific language governing permissions and limitations      *
17 * under the License.                                           *
18 ****************************************************************/
19
20package org.apache.james.mime4j.decoder;
21
22import java.util.Iterator;
23
24public class ByteQueue {
25
26    private UnboundedFifoByteBuffer buf;
27    private int initialCapacity = -1;
28
29    public ByteQueue() {
30        buf = new UnboundedFifoByteBuffer();
31    }
32
33    public ByteQueue(int initialCapacity) {
34        buf = new UnboundedFifoByteBuffer(initialCapacity);
35        this.initialCapacity = initialCapacity;
36    }
37
38    public void enqueue(byte b) {
39        buf.add(b);
40    }
41
42    public byte dequeue() {
43        return buf.remove();
44    }
45
46    public int count() {
47        return buf.size();
48    }
49
50    public void clear() {
51        if (initialCapacity != -1)
52            buf = new UnboundedFifoByteBuffer(initialCapacity);
53        else
54            buf = new UnboundedFifoByteBuffer();
55    }
56
57    public Iterator iterator() {
58        return buf.iterator();
59    }
60
61
62}
63