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1 /* Directory -- Filesystem directory object
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2
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3 Digital Image Library servlet components
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4
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5 Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de)
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6
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7 This program is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2 of the License, or (at your
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10 option) any later version.
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11
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12 Please read license.txt for the full details. A copy of the GPL
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13 may be found at http://www.gnu.org/copyleft/lgpl.html
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 * Created on 26.08.2003
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20 *
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21 */
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22 package digilib.io;
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23
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24 import java.io.File;
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25 import java.util.Arrays;
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26
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27 import org.apache.log4j.Logger;
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28
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29 /** Class for filesystem directories
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30 * @author casties
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31 *
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32 */
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33 public class Directory {
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34
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35 protected Logger logger = Logger.getLogger(this.getClass());
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36
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37 /** File object pointing to the directory */
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38 protected File dir = null;
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39 /** parent directory */
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40 protected Directory parent = null;
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41 /** list of filenames in the directory */
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42 protected String[] list = null;
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43
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44 /** Default constructor.
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45 *
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46 */
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47 public Directory() {
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48 super();
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49 }
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50
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51 /** Constructor taking a File object.
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52 *
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53 * @param d
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54 */
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55 public Directory(File d) {
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56 dir = d;
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57 }
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58
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59 /** Constructor taking a File object and a parent.
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60 *
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61 * @param dir
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62 * @param parent
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63 */
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64 public Directory(File dir, Directory parent) {
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65 this.dir = dir;
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66 this.parent = parent;
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67 }
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68
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69 /** Constructor taking a directory name.
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70 *
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71 * @param d
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72 */
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73 public Directory(String dn) {
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74 dir = new File(dn);
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75 }
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76
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77
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78 /** Reads the names of the files in the directory.
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79 * Fills the filenames array. Returns if the operation was successful.
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80 *
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81 * @return
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82 */
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83 public boolean readDir() {
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84 if (dir != null) {
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85 //logger.debug("reading dir: "+dir.getPath());
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86 list = dir.list();
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87 Arrays.sort(list);
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88 //logger.debug(" done");
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89 }
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90 return (list != null);
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91 }
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92
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93 /**
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94 * @return
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95 */
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96 public File getDir() {
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97 return dir;
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98 }
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99
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100 /**
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101 * @param dir
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102 */
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103 public void setDir(File dir) {
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104 this.dir = dir;
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105 }
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106
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107 /**
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108 * @return
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109 */
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110 Directory getParent() {
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111 return parent;
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112 }
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113
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114 /**
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115 * @param parent
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116 */
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117 void setParent(Directory parent) {
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118 this.parent = parent;
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119 }
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120
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121
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122 /**
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123 * @return Returns the filenames.
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124 */
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125 public String[] getFilenames() {
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126 return list;
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127 }
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128
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129 /**
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130 * @param filenames The filenames to set.
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131 */
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132 public void setFilenames(String[] filenames) {
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133 this.list = filenames;
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134 }
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135
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136 public void clearFilenames() {
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137 this.list = null;
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138 }
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139 }
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