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 org.apache.carbondata.common;
  
  import java.util.Objects;
  
  import org.apache.carbondata.common.annotations.InterfaceAudience;
  
  @InterfaceAudience.Internal
  public class Strings {
  
    /**
     * Provide same function as mkString in Scala.
     * This is added to avoid JDK 8 dependency.
     */
    public static String mkString(String[] strings, String delimiter) {
      Objects.requireNonNull(strings);
      Objects.requireNonNull(delimiter);
      StringBuilder builder = new StringBuilder();
      for (int i = 0; i < strings.length; i++) {
        builder.append(strings[i]);
        if (i != strings.length - 1) {
          builder.append(delimiter);
        }
      }
      return builder.toString();
    }
  
    /**
     * Append KB/MB/GB/TB to the input size and return
     * @param sizeInBytes data size in bytes
     * @return data size with unit
     */
    public static String formatSize(float sizeInBytes) {
      long KB = 1024L;
      long MB = KB << 10;
      long GB = MB << 10;
      long TB = GB << 10;
      if (sizeInBytes < 0) {
        return "NA";
      } else if (sizeInBytes >= 0 && sizeInBytes < KB) {
        return String.format("%sB", sizeInBytes);
      } else if (sizeInBytes >= KB && sizeInBytes < MB) {
        return String.format("%.2fKB", sizeInBytes / KB);
      } else if (sizeInBytes >= MB && sizeInBytes < GB) {
        return String.format("%.2fMB", sizeInBytes / MB);
      } else if (sizeInBytes >= GB && sizeInBytes < TB) {
        return String.format("%.2fGB", sizeInBytes / GB);
      } else {
        return String.format("%.2fTB", sizeInBytes / TB);
      }
    }
  }
  