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/*
* #%L
* SciJava Common shared library for SciJava software.
* %%
* Copyright (C) 2009 - 2023 SciJava developers.
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package org.scijava.log;
/**
* Constants for specifying a logger's level of verbosity.
*
* @author Curtis Rueden
*/
public final class LogLevel {
private LogLevel() {
// prevent instantiation of utility class
}
public static final int NONE = 0;
public static final int ERROR = 1;
public static final int WARN = 2;
public static final int INFO = 3;
public static final int DEBUG = 4;
public static final int TRACE = 5;
public static String prefix(final int level) {
switch (level) {
case ERROR:
return "ERROR";
case WARN:
return "WARNING";
case INFO:
return "INFO";
case DEBUG:
return "DEBUG";
case TRACE:
return "TRACE";
default:
return "LEVEL" + level;
}
}
/**
* Extracts the log level value from a string.
*
* @return The log level, or -1 if the level cannot be parsed.
*/
public static int value(final String s) {
if (s == null) return -1;
// check whether it's a string label (e.g., "debug")
final String log = s.trim().toLowerCase();
if (log.startsWith("n")) return LogLevel.NONE;
if (log.startsWith("e")) return LogLevel.ERROR;
if (log.startsWith("w")) return LogLevel.WARN;
if (log.startsWith("i")) return LogLevel.INFO;
if (log.startsWith("d")) return LogLevel.DEBUG;
if (log.startsWith("t")) return LogLevel.TRACE;
// check whether it's a numerical value (e.g., 5)
try {
return Integer.parseInt(log);
}
catch (final NumberFormatException exc) {
// nope!
}
return -1;
}
}