src/main/java/eu/svjatoslav/commons/file/FilePathParser.java

   1 /*
   2  * Svjatoslav Commons - shared library of common functionality.
   3  * Copyright ©2012-2014, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 3 of the GNU Lesser General Public License
   7  * or later as published by the Free Software Foundation.
   8  */
   9
  10 package eu.svjatoslav.commons.file;
  11
  12 import java.io.File;
  13
  14 public class FilePathParser {
  15
  16         public static String getFileExtension(final File file) {
  17                 final String fullFileName = file.getName();
  18
  19                 return getFileExtension(fullFileName);
  20         }
  21
  22         public static String getFileExtension(final String fullFileName) {
  23                 final int dot = fullFileName.lastIndexOf('.');
  24                 String fileExtension;
  25                 if (dot == -1)
  26                         fileExtension = "";
  27                 else {
  28                         fileExtension = fullFileName.substring(dot + 1);
  29                         fileExtension = fileExtension.toLowerCase();
  30                 }
  31
  32                 return fileExtension;
  33         }
  34
  35         public static String getFileNameWithoutExtension(final File file) {
  36                 final String fullFileName = file.getName();
  37                 return getFileNameWithoutExtension(fullFileName);
  38         }
  39
  40         public static String getFileNameWithoutExtension(final String fullFileName) {
  41                 final int dot = fullFileName.lastIndexOf('.');
  42                 String fileName;
  43                 if (dot == -1)
  44                         fileName = fullFileName;
  45                 else
  46                         fileName = fullFileName.substring(0, dot);
  47
  48                 return fileName;
  49         }
  50
  51         public static String getFileSizeDescription(long fileSize) {
  52                 String suffix = "b";
  53
  54                 if (fileSize > (1024 * 1024 * 10)) {
  55                         fileSize = fileSize / (1024 * 1024);
  56                         suffix = "Mb";
  57                 } else if (fileSize > (1024 * 10)) {
  58                         fileSize = fileSize / 1024;
  59                         suffix = "Kb";
  60                 }
  61
  62                 final String fileSizeString = String.valueOf(fileSize) + " " + suffix;
  63
  64                 return fileSizeString;
  65         }
  66 }