content: /**
   * Copyright (C) 2010-2016 eBusiness Information, Excilys Group
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License. You may obtain a copy of
   * the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed To in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations under
   * the License.
   */
  package org.androidannotations.logger;
  
  import java.util.HashMap;
  import java.util.Map;
  
  public final class LoggerFactory {
  
  	private static final Map<String, Logger> LOGGER_CACHE = new HashMap<>();
  
  	private LoggerFactory() {
  	}
  
  	public static Logger getLogger(Class<?> clazz) {
  		return getLogger(simpleLoggerName(clazz));
  	}
  
  	private static Logger getLogger(String name) {
  		if (name == null) {
  			throw new IllegalArgumentException("name argument cannot be null");
  		}
  
  		Logger logger = LOGGER_CACHE.get(name);
  		if (logger == null) {
  			logger = new Logger(LoggerContext.getInstance(), name);
  			LOGGER_CACHE.put(name, logger);
  		}
  
  		return logger;
  	}
  
  	private static String simpleLoggerName(Class<?> clazz) {
  		Package classPackage = clazz.getPackage();
  		if (classPackage == null) {
  			return clazz.getName();
  		}
  
  		StringBuilder stringBuilder = new StringBuilder();
  
  		String packageName = classPackage.getName();
  		int lastIndex = 0;
  		while (true) {
  			stringBuilder.append(packageName.charAt(lastIndex)).append(".");
  
  			lastIndex = packageName.indexOf('.', lastIndex);
  			if (lastIndex == -1) {
  				break;
  			}
  			lastIndex++;
  		}
  
  		stringBuilder.append(clazz.getSimpleName());
  
  		return stringBuilder.toString();
  	}
  }
  