/*
 * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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package jdk.incubator.jpackage.internal;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;

Log General purpose logging mechanism.
/** * Log * * General purpose logging mechanism. */
public class Log { public static class Logger { private boolean verbose = false; private PrintWriter out = null; private PrintWriter err = null; // verbose defaults to true unless environment variable JPACKAGE_DEBUG // is set to true. // Then it is only set to true by using --verbose jpackage option public Logger() { verbose = ("true".equals(System.getenv("JPACKAGE_DEBUG"))); } public void setVerbose() { verbose = true; } public boolean isVerbose() { return verbose; } public void setPrintWriter(PrintWriter out, PrintWriter err) { this.out = out; this.err = err; } public void flush() { if (out != null) { out.flush(); } if (err != null) { err.flush(); } } public void info(String msg) { if (out != null) { out.println(msg); } else { System.out.println(msg); } } public void error(String msg) { if (err != null) { err.println(msg); } else { System.err.println(msg); } } public void verbose(Throwable t) { if (out != null && verbose) { t.printStackTrace(out); } else if (verbose) { t.printStackTrace(System.out); } } public void verbose(String msg) { if (out != null && verbose) { out.println(msg); } else if (verbose) { System.out.println(msg); } } } private static Logger delegate = null; public static void setLogger(Logger logger) { delegate = (logger != null) ? logger : new Logger(); } public static void flush() { if (delegate != null) { delegate.flush(); } } public static void info(String msg) { if (delegate != null) { delegate.info(msg); } } public static void error(String msg) { if (delegate != null) { delegate.error(msg); } } public static void setVerbose() { if (delegate != null) { delegate.setVerbose(); } } public static boolean isVerbose() { return (delegate != null) ? delegate.isVerbose() : false; } public static void verbose(String msg) { if (delegate != null) { delegate.verbose(msg); } } public static void verbose(Throwable t) { if (delegate != null) { delegate.verbose(t); } } }