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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  package org.apache.http.impl.client.cache;
28  
29  import java.io.ByteArrayInputStream;
30  import java.io.IOException;
31  import java.io.InputStream;
32  
33  public class ConsumableInputStream extends InputStream {
34  
35      private final ByteArrayInputStream buf;
36      private boolean closed = false;
37  
38      public ConsumableInputStream(final ByteArrayInputStream buf) {
39          this.buf = buf;
40      }
41  
42      @Override
43      public int read() throws IOException {
44          return buf.read();
45      }
46  
47      @Override
48      public void close() {
49          closed = true;
50          try {
51              buf.close();
52          } catch (final IOException e) {
53          }
54      }
55  
56      public boolean wasClosed() {
57          return closed;
58      }
59  }