/*
* Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* 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,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.tools.sjavac;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Locale;
/**
* Utility class only for sjavac logging.
*
* Logging in sjavac has special requirements when running in server/client
* mode. Most of the log messages is generated server-side, but the server
* is typically spawned by the client in the background, so the user usually
* does not see the server stdout/stderr. For this reason log messages needs
* to relayed back to the client that performed the request that generated the
* log message. To support this use case this class maintains a per-thread log
* instance so that each connected client can have its own instance that
* relays messages back to the requesting client.
*
* On the client-side (or when running sjavac without server-mode) there will
* typically just be one Log instance.
*
* <p><b>This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*/
public class Log {
public enum Level {
ERROR,
WARN,
INFO,
DEBUG,
TRACE;
}
private static Log stdOutErr = new Log(new PrintWriter(System.out), new PrintWriter(System.err));
private static ThreadLocal<Log> loggers = new ThreadLocal<>();
protected PrintWriter err; // Used for error and warning messages
protected PrintWriter out; // Used for other messages
protected Level level = Level.INFO;
public Log(Writer out, Writer err) {
this.out = out == null ? null : new PrintWriter(out, true);
this.err = err == null ? null : new PrintWriter(err, true);
}
public static void setLogForCurrentThread(Log log) {
loggers.set(log);
}
public static void setLogLevel(String l) {
setLogLevel(Level.valueOf(l.toUpperCase(Locale.US)));
}
public static void setLogLevel(Level l) {
get().level = l;
}
static public void trace(String msg) {
log(Level.TRACE, msg);
}
static public void debug(String msg) {
log(Level.DEBUG, msg);
}
static public void info(String msg) {
log(Level.INFO, msg);
}
static public void warn(String msg) {
log(Level.WARN, msg);
}
static public void error(String msg) {
log(Level.ERROR, msg);
}
static public void error(Throwable t) {
log(Level.ERROR, t);
}
static public void log(Level l, String msg) {
get().printLogMsg(l, msg);
}
public static void debug(Throwable t) {
log(Level.DEBUG, t);
}
public static void log(Level l, Throwable t) {
StringWriter sw = new StringWriter();
t.printStackTrace(new PrintWriter(sw, true));
log(l, sw.toString());
}
static public boolean isDebugging() {
/**代码未完, 请加载全部代码(NowJava.com).**/