/*
 *   Copyright 2014 Brian Rosenberger (Brutex Network)
 *
 *   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 net.brutex.emitter.util;

import java.io.File;

import org.apache.log4j.Logger;

/**
 * The Class EmitterUtil.
 *
 * @author Brian Rosenberger, bru(at)brutex.de
 */
public final class EmitterUtil {
	

	private static Logger logger = Logger.getLogger(EmitterUtil.class);

	
	/**
	 * Check if the file exists and is readable. 
	 * 
	 * @param file The file to check
	 * @param isWritable also check if file is writable
	 * @param isExecutable also check if file is executable 
	 * @return 
	 */
	public static boolean verifyFile(String file, boolean isWritable, boolean isExecutable) {
		logger.debug(String.format("Verifying file '%s'.", file));
		File f = new File(file);
		String fn = f.getAbsolutePath();
		if(f.exists() && f.isFile()) {
			if(isWritable && !f.canWrite()) {
				logger.error(String.format("Cannot write to file '%s'.", fn));
				return false;
			}
			if(isExecutable && !f.canExecute()) {
				logger.error(String.format("Cannot execute file '%s'.", fn));
				return false;
			}
		return true;
		}
		logger.error(String.format("Cannot read file '%s'.", fn));
		return false;
	}

}