1 /* CRLFOutputStream.java --
2 Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
41 import java.io.FilterOutputStream;
42 import java.io.IOException;
43 import java.io.OutputStream;
44 import java.io.UnsupportedEncodingException;
47 * An output stream that filters LFs into CR/LF pairs.
49 * @author Chris Burdess (dog@gnu.org)
51 public class CRLFOutputStream
52 extends FilterOutputStream
54 static final String US_ASCII = "US-ASCII";
59 public static final int CR = 13;
64 public static final int LF = 10;
69 public static final byte[] CRLF = { CR, LF };
77 * Constructs a CR/LF output stream connected to the specified output stream.
79 public CRLFOutputStream(OutputStream out)
86 * Writes a character to the underlying stream.
87 * @exception IOException if an I/O error occurred
89 public void write(int ch) throws IOException
110 * Writes a byte array to the underlying stream.
111 * @exception IOException if an I/O error occurred
113 public void write(byte[] b)
116 write(b, 0, b.length);
120 * Writes a portion of a byte array to the underlying stream.
121 * @exception IOException if an I/O error occurred
123 public void write(byte[] b, int off, int len)
128 for (int i = off; i < len; i++)
133 out.write (b, d, i - d);
134 out.write (CRLF, 0, 2);
140 out.write (b, d, i - d);
141 out.write (CRLF, 0, 2);
150 out.write (b, d, len - d);
155 * Writes the specified ASCII string to the underlying stream.
156 * @exception IOException if an I/O error occurred
158 public void write(String text)
163 byte[] bytes = text.getBytes(US_ASCII);
164 write(bytes, 0, bytes.length);
166 catch (UnsupportedEncodingException e)
168 throw new IOException("The US-ASCII encoding is not supported " +
174 * Writes a newline to the underlying stream.
175 * @exception IOException if an I/O error occurred
177 public void writeln()
180 out.write(CRLF, 0, 2);