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/*
 *   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;
        }

}