/*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.io.*;
/**
* Convert the various newline conventions to the local platform's
* newline convention. <p>
*
* This stream can be used with the Message.writeTo method to
* generate a message that uses the local plaform's line terminator
* for the purpose of (e.g.) saving the message to a local file.
*/
public class NewlineOutputStream extends FilterOutputStream {
private int lastb = -1;
private static byte[] newline;
public NewlineOutputStream(OutputStream os) {
super(os);
if (newline == null) {
String s = System.getProperty("line.separator");
if (s == null || s.length() <= 0)
s = "\n";
try {
newline = s.getBytes("iso-8859-1"); // really us-ascii
} catch (UnsupportedEncodingException ex) {
// should never happen
newline = new byte[] { (byte)'\n' };
}
}
}
public void write(int b) throws IOException {
if (b == '\r') {
out.write(newline);
} else if (b == '\n') {
if (lastb != '\r')
out.write(newline);
} else {
out.write(b);
}
lastb = b;
}
public void write(byte b[]) throws IOException {
write(b, 0, b.length);
}
public void write(byte b[], int off, int len) throws IOException {
for (int i = 0 ; i < len ; i++) {
write(b[off + i]);
}
}
}