ohrstrom@1504: /*
ohrstrom@1504:  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
ohrstrom@1504:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohrstrom@1504:  *
ohrstrom@1504:  * This code is free software; you can redistribute it and/or modify it
ohrstrom@1504:  * under the terms of the GNU General Public License version 2 only, as
ohrstrom@1504:  * published by the Free Software Foundation.  Oracle designates this
ohrstrom@1504:  * particular file as subject to the "Classpath" exception as provided
ohrstrom@1504:  * by Oracle in the LICENSE file that accompanied this code.
ohrstrom@1504:  *
ohrstrom@1504:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohrstrom@1504:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohrstrom@1504:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohrstrom@1504:  * version 2 for more details (a copy is included in the LICENSE file that
ohrstrom@1504:  * accompanied this code).
ohrstrom@1504:  *
ohrstrom@1504:  * You should have received a copy of the GNU General Public License version
ohrstrom@1504:  * 2 along with this work; if not, write to the Free Software Foundation,
ohrstrom@1504:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohrstrom@1504:  *
ohrstrom@1504:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohrstrom@1504:  * or visit www.oracle.com if you need additional information or have any
ohrstrom@1504:  * questions.
ohrstrom@1504:  */
ohrstrom@1504: 
ohrstrom@1504: package com.sun.tools.sjavac;
ohrstrom@1504: 
ohrstrom@1504: import java.io.PrintStream;
ohrstrom@1504: 
ohrstrom@1504: /**
ohrstrom@1504:  * Utility class only for sjavac logging.
ohrstrom@1504:  * The log level can be set using for example --log=DEBUG on the sjavac command line.
ohrstrom@1504:  *
ohrstrom@1504:  * <p><b>This is NOT part of any supported API.
ohrstrom@1504:  * If you write code that depends on this, you do so at your own
ohrstrom@1504:  * risk.  This code and its internal interfaces are subject to change
ohrstrom@1504:  * or deletion without notice.</b></p>
ohrstrom@1504:  */
ohrstrom@1504: public class Log {
ohrstrom@1504:     private static PrintStream out, err;
ohrstrom@1504: 
ohrstrom@1504:     public final static int WARN = 1;
ohrstrom@1504:     public final static int INFO = 2;
ohrstrom@1504:     public final static int DEBUG = 3;
ohrstrom@1504:     public final static int TRACE = 4;
ohrstrom@1504:     private static int level = WARN;
ohrstrom@1504: 
ohrstrom@1504:     static public void trace(String msg) {
ohrstrom@1504:         if (level >= TRACE) {
ohrstrom@1504:             out.println(msg);
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     static public void debug(String msg) {
ohrstrom@1504:         if (level >= DEBUG) {
ohrstrom@1504:             out.println(msg);
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     static public void info(String msg) {
ohrstrom@1504:         if (level >= INFO) {
ohrstrom@1504:             out.println(msg);
ohrstrom@1504:         }
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     static public void warn(String msg) {
ohrstrom@1504:         err.println(msg);
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     static public void error(String msg) {
ohrstrom@1504:         err.println(msg);
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     static public void setLogLevel(String l, PrintStream o, PrintStream e)
ohrstrom@1504:         throws ProblemException {
ohrstrom@1504:         out = o;
ohrstrom@1504:         err = e;
ohrstrom@1504:         if (l.equals("warn")) level = WARN;
ohrstrom@1504:         else if (l.equals("info")) level = INFO;
ohrstrom@1504:         else if (l.equals("debug")) level = DEBUG;
ohrstrom@1504:         else if (l.equals("trace")) level = TRACE;
ohrstrom@1504:         else throw new ProblemException("No such log level \""+l+"\"");
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     static public boolean isTracing() {
ohrstrom@1504:         return level >= TRACE;
ohrstrom@1504:     }
ohrstrom@1504: 
ohrstrom@1504:     static public boolean isDebugging() {
ohrstrom@1504:         return level >= DEBUG;
ohrstrom@1504:     }
ohrstrom@1504: }