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Java > Open Source Codes > org > jruby > util > IOWriter


1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
8  *
9  * Software distributed under the License is distributed on an "AS
10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2006 Ola Bini <ola@ologix.com>
15  *
16  * Alternatively, the contents of this file may be used under the terms of
17  * either of the GNU General Public License Version 2 or later (the "GPL"),
18  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
19  * in which case the provisions of the GPL or the LGPL are applicable instead
20  * of those above. If you wish to allow use of your version of this file only
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24  * and other provisions required by the GPL or the LGPL. If you do not delete
25  * the provisions above, a recipient may use your version of this file under
26  * the terms of any one of the CPL, the GPL or the LGPL.
27  ***** END LICENSE BLOCK *****/
28 /**
29  * $Id: $
30  */
31 package org.jruby.util;
32
33 import java.io.IOException JavaDoc;
34 import java.io.Writer JavaDoc;
35
36 import org.jruby.runtime.builtin.IRubyObject;
37
38 /**
39  * @author <a HREF="mailto:ola.bini@ki.se">Ola Bini</a>
40  * @version $Revision: 1.2 $
41  */
42 public class IOWriter extends Writer JavaDoc {
43     private IRubyObject io;
44
45     public IOWriter(IRubyObject io) {
46         super();
47         if(!io.respondsTo("write")) {
48             throw new IllegalArgumentException JavaDoc("Object: " + io + " is not a legal argument to this wrapper, cause it doesn't respond to \"write\".");
49         }
50         this.io = io;
51     }
52
53     public void close() throws IOException JavaDoc {
54         io.callMethod(io.getRuntime().getCurrentContext(), "close");
55     }
56
57     public void flush() throws IOException JavaDoc {
58         io.callMethod(io.getRuntime().getCurrentContext(), "flush");
59     }
60
61     public void write(char[] cbuf, int off, int len) {
62         io.callMethod(io.getRuntime().getCurrentContext(),"write", io.getRuntime().newString(String.valueOf(cbuf,off,len)));
63     }
64 }// IOWriter
65
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