tikhomirov@295: /*
tikhomirov@295:  * Copyright (c) 2011 TMate Software Ltd
tikhomirov@295:  *  
tikhomirov@295:  * This program is free software; you can redistribute it and/or modify
tikhomirov@295:  * it under the terms of the GNU General Public License as published by
tikhomirov@295:  * the Free Software Foundation; version 2 of the License.
tikhomirov@295:  *
tikhomirov@295:  * This program is distributed in the hope that it will be useful,
tikhomirov@295:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@295:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@295:  * GNU General Public License for more details.
tikhomirov@295:  *
tikhomirov@295:  * For information on how to redistribute this software under
tikhomirov@295:  * the terms of a license other than GNU General Public License
tikhomirov@295:  * contact TMate Software at support@hg4j.com
tikhomirov@295:  */
tikhomirov@295: package org.tmatesoft.hg.internal;
tikhomirov@295: 
tikhomirov@456: import static org.tmatesoft.hg.util.LogFacility.Severity.Info;
tikhomirov@456: 
tikhomirov@295: import java.io.PrintStream;
tikhomirov@295: 
tikhomirov@295: import org.tmatesoft.hg.util.LogFacility;
tikhomirov@295: 
tikhomirov@295: /**
tikhomirov@295:  * Primitive implementation of {@link LogFacility} that directs all output to specified {@link PrintStream}.
tikhomirov@295:  * 
tikhomirov@295:  * @author Artem Tikhomirov
tikhomirov@295:  * @author TMate Software Ltd.
tikhomirov@295:  */
tikhomirov@295: public class StreamLogFacility implements LogFacility {
tikhomirov@295: 	
tikhomirov@295: 	private final boolean isDebug;
tikhomirov@456: 	private final Severity severity;
tikhomirov@295: 	protected final boolean timestamp;
tikhomirov@295: 	protected final PrintStream outStream;
tikhomirov@295: 
tikhomirov@456: 	public StreamLogFacility(Severity level, boolean needTimestamp, PrintStream out) {
tikhomirov@456: 		assert level != null;
tikhomirov@456: 		severity = level;
tikhomirov@456: 		isDebug = level == Severity.Debug;
tikhomirov@295: 		timestamp = needTimestamp;
tikhomirov@295: 		outStream = out;
tikhomirov@295: 	}
tikhomirov@295: 
tikhomirov@295: 	public boolean isDebug() {
tikhomirov@295: 		return isDebug;
tikhomirov@295: 	}
tikhomirov@456: 	
tikhomirov@456: 	public Severity getLevel() {
tikhomirov@456: 		return severity;
tikhomirov@295: 	}
tikhomirov@295: 
tikhomirov@456: 	public void dump(Class<?> src, Severity severity, String format, Object... args) {
tikhomirov@456: 		if (severity.ordinal() >= getLevel().ordinal()) {
tikhomirov@456: 			printf(severity, src, format, args);
tikhomirov@295: 		}
tikhomirov@295: 	}
tikhomirov@295: 
tikhomirov@456: 	public void dump(Class<?> src, Severity severity, Throwable th, String message) {
tikhomirov@456: 		if (severity.ordinal() >= getLevel().ordinal()) {
tikhomirov@456: 			printf(severity, src, th, message);
tikhomirov@295: 		}
tikhomirov@295: 	}
tikhomirov@295: 
tikhomirov@456: 	protected void printf(Severity level, Class<?> src, String format, Object... args) {
tikhomirov@295: 		String msg = String.format(format, args);
tikhomirov@295: 		if (timestamp) {
tikhomirov@295: 			outStream.printf(isDebug ? "%tT.%1$tL " : "%tT ", System.currentTimeMillis());
tikhomirov@295: 		}
tikhomirov@295: 		if (isDebug) {
tikhomirov@295: 			String cn = src.getName();
tikhomirov@295: 			if (cn.startsWith("org.tmatesoft.hg.")) {
tikhomirov@295: 				cn = "oth." + cn.substring("org.tmatesoft.hg.".length());
tikhomirov@295: 			}
tikhomirov@295: 			outStream.printf("(%s) ", cn);
tikhomirov@295: 		}
tikhomirov@456: 		outStream.printf("%s: %s", level.toString().toUpperCase(), msg);
tikhomirov@295: 		if (format.length() == 0 || format.charAt(format.length() - 1) != '\n') {
tikhomirov@295: 			outStream.println();
tikhomirov@295: 		}
tikhomirov@295: 	}
tikhomirov@456: 	protected void printf(Severity level, Class<?> src, Throwable th, String msg) {
tikhomirov@295: 		if (msg != null || timestamp || isDebug || th == null) {
tikhomirov@295: 			printf(level, src, msg == null ? "" : msg, (Object[]) null);
tikhomirov@295: 		}
tikhomirov@295: 		if (th != null) {
tikhomirov@456: 			if (getLevel().ordinal() <= Info.ordinal()) {
tikhomirov@295: 				// full stack trace
tikhomirov@295: 				th.printStackTrace(outStream);
tikhomirov@295: 			} else {
tikhomirov@295: 				// just title of the exception
tikhomirov@295: 				outStream.printf("%s: %s\n", th.getClass().getName(), th.getMessage());
tikhomirov@295: 			}
tikhomirov@295: 		}
tikhomirov@295: 	}
tikhomirov@295: 
tikhomirov@295: 	// alternative to hardcore System.out where SessionContext is not available now (or ever)
tikhomirov@295: 	public static LogFacility newDefault() {
tikhomirov@456: 		return new StreamLogFacility(Severity.Debug, true, System.out); 
tikhomirov@295: 	}
tikhomirov@295: }