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)
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14 General Public License for more details.
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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
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27 permission to link this library with independent modules to produce an
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30 terms of your choice, provided that you also meet, for each linked
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38 package org.sonews.util.io; // original package: gnu.java.net
40 import java.io.FilterOutputStream;
41 import java.io.IOException;
42 import java.io.OutputStream;
43 import java.io.UnsupportedEncodingException;
46 * An output stream that filters LFs into CR/LF pairs.
48 * @author Chris Burdess (dog@gnu.org)
49 * @version classpath-0.98
51 public class CRLFOutputStream extends FilterOutputStream {
53 static final String US_ASCII = "US-ASCII";
57 public static final int CR = 13;
61 public static final int LF = 10;
65 public static final byte[] CRLF = {CR, LF};
72 * Constructs a CR/LF output stream connected to the specified output stream.
74 public CRLFOutputStream(OutputStream out) {
80 * Writes a character to the underlying stream.
81 * @exception IOException if an I/O error occurred
84 public void write(int ch) throws IOException {
87 } else if (ch == LF) {
98 * Writes a byte array to the underlying stream.
99 * @exception IOException if an I/O error occurred
102 public void write(byte[] b) throws IOException {
103 write(b, 0, b.length);
107 * Writes a portion of a byte array to the underlying stream.
108 * @exception IOException if an I/O error occurred
111 public void write(byte[] b, int off, int len) throws IOException {
114 for (int i = off; i < len; i++) {
117 out.write(b, d, i - d);
118 out.write(CRLF, 0, 2);
123 out.write(b, d, i - d);
124 out.write(CRLF, 0, 2);
132 out.write(b, d, len - d);
137 * Writes the specified ASCII string to the underlying stream.
138 * @exception IOException if an I/O error occurred
140 public void write(String text) throws IOException {
142 byte[] bytes = text.getBytes(US_ASCII);
143 write(bytes, 0, bytes.length);
144 } catch (UnsupportedEncodingException e) {
145 throw new IOException("The US-ASCII encoding is not supported on this system", e);
150 * Writes a newline to the underlying stream.
151 * @exception IOException if an I/O error occurred
153 public void writeln() throws IOException {
154 out.write(CRLF, 0, 2);