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1   /*
2    * $Id: WritableFile.java,v 1.6 2006/06/09 11:22:20 dierk Exp $
3    *
4    * Copyright 2003 (C) John Wilson. All Rights Reserved.
5    *
6    * Redistribution and use of this software and associated documentation
7    * ("Software"), with or without modification, are permitted provided that the
8    * following conditions are met:
9    *  1. Redistributions of source code must retain copyright statements and
10   * notices. Redistributions must also contain a copy of this document.
11   *  2. Redistributions in binary form must reproduce the above copyright
12   * notice, this list of conditions and the following disclaimer in the
13   * documentation and/or other materials provided with the distribution.
14   *  3. The name "groovy" must not be used to endorse or promote products
15   * derived from this Software without prior written permission of The Codehaus.
16   * For written permission, please contact info@codehaus.org.
17   *  4. Products derived from this Software may not be called "groovy" nor may
18   * "groovy" appear in their names without prior written permission of The
19   * Codehaus. "groovy" is a registered trademark of The Codehaus.
20   *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
21   *
22   * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
23   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25   * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
26   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
32   * DAMAGE.
33   *
34   */
35  
36  package org.codehaus.groovy.runtime;
37  
38  import groovy.lang.Writable;
39  
40  import java.io.File;
41  import java.io.IOException;
42  import java.io.Reader;
43  import java.io.Writer;
44  
45  /***
46   * A Writable File.
47   *
48   * @author John Wilson
49   *
50   */
51  public class WritableFile extends File implements Writable {
52      private final String encoding;
53  
54      public WritableFile(final File delegate) {
55          this(delegate, null);
56      }
57  
58      public WritableFile(final File delegate, final String encoding) {
59          super(delegate.toURI());
60          this.encoding = encoding;
61      }
62  
63      public Writer writeTo(final Writer out) throws IOException {
64          final Reader reader =
65              (this.encoding == null)
66                  ? DefaultGroovyMethods.newReader(this)
67                  : DefaultGroovyMethods.newReader(this, this.encoding);
68  
69          try {
70              int c = reader.read();
71  
72              while (c != -1) {
73                  out.write(c);
74                  c = reader.read();
75              }
76          }
77          finally {
78              reader.close();
79          }
80          return out;
81      }
82  }