1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.collections.primitives.adapters.io;
18
19 import java.io.InputStream;
20
21 import org.apache.commons.collections.primitives.ByteIterator;
22
23 /**
24 * Adapts an {@link ByteIterator} to the {@link InputStream} interface.
25 *
26 * @version $Revision: 480462 $ $Date: 2006-11-29 03:15:00 -0500 (Wed, 29 Nov 2006) $
27 * @author Rodney Waldhoff
28 */
29 public class ByteIteratorInputStream extends InputStream {
30
31 public ByteIteratorInputStream(ByteIterator in) {
32 this.iterator= in;
33 }
34
35 public int read() {
36 if(iterator.hasNext()) {
37 return (0xFF & iterator.next());
38 } else {
39 return -1;
40 }
41 }
42
43 public static InputStream adapt(ByteIterator in) {
44 return null == in ? null : new ByteIteratorInputStream(in);
45 }
46
47 private ByteIterator iterator = null;
48
49 }