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1 package org.apache.turbine.util; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache Turbine" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache Turbine", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 /*** 58 * Common {@link java.io.File} manipulation routines. 59 * 60 * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a> 61 * @version $Id: FileUtils.java,v 1.1.1.1 2001/08/16 05:09:39 jvanzyl Exp $ 62 */ 63 public class FileUtils 64 { 65 /*** 66 * The number of bytes in a kilobyte. 67 */ 68 public static final int ONE_KB = 1024; 69 70 /*** 71 * The number of bytes in a megabyte. 72 */ 73 public static final int ONE_MB = ONE_KB * ONE_KB; 74 75 /*** 76 * The number of bytes in a gigabyte. 77 */ 78 public static final int ONE_GB = ONE_KB * ONE_MB; 79 80 /*** 81 * Returns a human-readable version of the file size (original is in 82 * bytes). 83 * 84 * @param size The number of bytes. 85 * @return A human-readable display value (includes units). 86 */ 87 public static String byteCountToDisplaySize(int size) 88 { 89 String displaySize; 90 91 if (size / ONE_GB > 0) 92 { 93 displaySize = String.valueOf(size / ONE_GB) + " GB"; 94 } 95 else if (size / ONE_MB > 0) 96 { 97 displaySize = String.valueOf(size / ONE_MB) + " MB"; 98 } 99 else if (size / ONE_KB > 0) 100 { 101 displaySize = String.valueOf(size / ONE_KB) + " kB"; 102 } 103 else 104 { 105 displaySize = String.valueOf(size) + " bytes"; 106 } 107 108 return displaySize; 109 } 110 }

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