content: /*
   * Copyright 2012-2021 Aerospike, Inc.
   *
   * Portions may be licensed to Aerospike, Inc. under one or more contributor
   * license agreements WHICH ARE COMPATIBLE WITH THE APACHE LICENSE, VERSION 2.0.
   *
   * 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 com.aerospike.benchmarks;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileReader;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  public class Utils {
  	/**
  	 * Read all the contents from the file and put it in a List.
  	 * @throws IOException
  	 */
  	protected static List<String> readKeyFromFile(String filepath) throws IOException {
  		List<String> contentsFromFile = readAllLines(filepath);
  		return contentsFromFile;
  	}
  
  	private static List<String> readAllLines(String filepath) throws IOException {
  		List<String> fileContent = new ArrayList<String>();
  		File file = new File(filepath);
  
  		BufferedReader input =  new BufferedReader(new FileReader(file));
  		try {
  			String line = null;
  			while (( line = input.readLine()) != null) {
  				fileContent.add(line);
  			}
  		}
  		finally {
  			if (input != null)
  				input.close();
  		}
  
  		return fileContent;
  	}
  
  	public static boolean isNumeric(String str) {
  		return str.matches("-?\\d+(\\.\\d+)?");  //match a number with optional '-' and decimal.
  	}
  }
  