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The Adobe Experience Manager SDK
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2017 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://oss.oracle.com/licenses/CDDL+GPL-1.1
* or LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.mail.util;
import java.io.*;
import java.util.logging.Level;
/**
* This class is a subclass of DataOutputStream that copies the
* data being written into the DataOutputStream into another output
* stream. This class is used here to provide a debug trace of the
* stuff thats being written out into the DataOutputStream.
*
* @author John Mani
*/
public class TraceOutputStream extends FilterOutputStream {
private boolean trace = false;
private boolean quote = false;
private OutputStream traceOut;
/**
* Creates an output stream filter built on top of the specified
* underlying output stream.
*
* @param out the underlying output stream.
* @param logger log trace here
*/
public TraceOutputStream(OutputStream out, MailLogger logger) {
super(out);
this.trace = logger.isLoggable(Level.FINEST);
this.traceOut = new LogOutputStream(logger);;
}
/**
* Creates an output stream filter built on top of the specified
* underlying output stream.
*
* @param out the underlying output stream.
* @param traceOut the trace stream.
*/
public TraceOutputStream(OutputStream out, OutputStream traceOut) {
super(out);
this.traceOut = traceOut;
}
/**
* Set the trace mode.
*
* @param trace the trace mode
*/
public void setTrace(boolean trace) {
this.trace = trace;
}
/**
* Set quote mode.
* @param quote the quote mode
*/
public void setQuote(boolean quote) {
this.quote = quote;
}
/**
* Writes the specified byte to this output stream.
* Writes out the byte into the trace stream if the trace mode
* is true
*
* @param b the byte to write
* @exception IOException for I/O errors
*/
@Override
public void write(int b) throws IOException {
if (trace) {
if (quote)
writeByte(b);
else
traceOut.write(b);
}
out.write(b);
}
/**
* Writes b.length bytes to this output stream.
* Writes out the bytes into the trace stream if the trace
* mode is true
*
* @param b bytes to write
* @param off offset in array
* @param len number of bytes to write
* @exception IOException for I/O errors
*/
@Override
public void write(byte b[], int off, int len) throws IOException {
if (trace) {
if (quote) {
for (int i = 0; i < len; i++)
writeByte(b[off + i]);
} else
traceOut.write(b, off, len);
}
out.write(b, off, len);
}
/**
* Write a byte in a way that every byte value is printable ASCII.
*/
private final void writeByte(int b) throws IOException {
b &= 0xff;
if (b > 0x7f) {
traceOut.write('M');
traceOut.write('-');
b &= 0x7f;
}
if (b == '\r') {
traceOut.write('\\');
traceOut.write('r');
} else if (b == '\n') {
traceOut.write('\\');
traceOut.write('n');
traceOut.write('\n');
} else if (b == '\t') {
traceOut.write('\\');
traceOut.write('t');
} else if (b < ' ') {
traceOut.write('^');
traceOut.write('@' + b);
} else {
traceOut.write(b);
}
}
}