content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 network.aika.utils;
  
  import java.math.RoundingMode;
  import java.text.DecimalFormat;
  import java.text.DecimalFormatSymbols;
  import java.util.Locale;
  
  import static network.aika.queue.keys.QueueKey.MAX_ROUND;
  
  /**
   *
   * @author Lukas Molzberger
   */
  public class StringUtils {
  
      public static double TOLERANCE = 0.001;
  
  
      public static String doubleToString(Double x) {
          if(x == null)
              return "--";
          return doubleToString(x, "#.######");
      }
  
      public static String floatToString(Float d, String format) {
          if(d == null)
              return "--";
          DecimalFormat formatter = new DecimalFormat(format, DecimalFormatSymbols.getInstance(Locale.ENGLISH));
          formatter.setRoundingMode( RoundingMode.DOWN );
          return formatter.format(d);
      }
  
      public static String doubleToString(Double d, String format) {
          if(d == null)
              return "--";
          DecimalFormat formatter = new DecimalFormat(format, DecimalFormatSymbols.getInstance(Locale.ENGLISH));
          formatter.setRoundingMode( RoundingMode.DOWN );
          return formatter.format(d);
      }
  
      public static String roundToString(int r) {
          return r == MAX_ROUND ? "MAX" : "" + r;
      }
  
      public static String depthToSpace(int depth) {
          StringBuilder sb = new StringBuilder();
          for(int i = 0; i < depth; i++)
              sb.append(" ");
          return sb.toString();
      }
  }
  