001/*
002 * Licensed under the Apache License, Version 2.0 (the "License");
003 * you may not use this file except in compliance with the License.
004 * You may obtain a copy of the License at
005 *
006 *     http://www.apache.org/licenses/LICENSE-2.0
007 *
008 * Unless required by applicable law or agreed to in writing, software
009 * distributed under the License is distributed on an "AS IS" BASIS,
010 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
011 * See the License for the specific language governing permissions and
012 * limitations under the License.
013 */
014package org.gbif.utils;
015
016public class HumanSize {
017  private static final int unit = 1024;
018
019  public static String bytes(long bytes) {
020    if (bytes < unit) return bytes + " B";
021    int exp = (int) (Math.log(bytes) / Math.log(unit));
022    char pre = "kMGTPE".charAt(exp - 1);
023    return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
024  }
025}