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1   /*
2    * File:    Copier.java
3    * Created: 13.04.2006 8:27:50 
4    *
5    * Copyright 2006 Michal Burda.
6    *
7    * This program is free software; you can redistribute it and/or modify
8    * it under the terms of the GNU General Public License as published by
9    * the Free Software Foundation; either version 2 of the License, or
10   * (at your option) any later version.
11   *
12   * This program is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   * GNU General Public License for more details.
16   *
17   * You should have received a copy of the GNU General Public License
18   * along with this program; if not, write to the Free Software
19   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
20   */
21  package net.sf.webmancer.util.io;
22  
23  import java.io.IOException;
24  import java.io.InputStream;
25  import java.io.OutputStream;
26  import java.io.Reader;
27  import java.io.Writer;
28  
29  import net.sf.webmancer.util.ContractChecker;
30  
31  /**
32   * @author Michal Burda
33   */
34  public class Copier {
35      /**
36       * 
37       */
38      private int bufferSize;
39  
40      /**
41       * @param bufferSize
42       */
43      public Copier(final int bufferSize) {
44          this.bufferSize = bufferSize;
45      }
46  
47      /**
48       * @param input
49       * @param output
50       * @throws IOException
51       */
52      public void copy(final InputStream input, final OutputStream output) throws IOException {
53          ContractChecker.mustNotBeNull(input, "input");
54          ContractChecker.mustNotBeNull(output, "output");
55          byte[] buffer = new byte[this.bufferSize];
56          int read = -1;
57          try {
58              while ((read = input.read(buffer)) >= 0) {
59                  output.write(buffer, 0, read);
60              }
61          } finally {
62              try {
63                  input.close();
64              } finally {
65                  output.close();
66              }
67          }
68      }
69  
70      /**
71       * @param input
72       * @param output
73       * @throws IOException
74       */
75      public void copy(final Reader input, final Writer output) throws IOException {
76          ContractChecker.mustNotBeNull(input, "input");
77          ContractChecker.mustNotBeNull(output, "output");
78          char[] buffer = new char[this.bufferSize];
79          int read = -1;
80          try {
81              while ((read = input.read(buffer)) >= 0) {
82                  output.write(buffer, 0, read);
83              }
84          } finally {
85              try {
86                  input.close();
87              } finally {
88                  output.close();
89              }
90          }
91      }
92  
93  }