1 | /**
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2 | *#########################################################################
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3 | *
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4 | * A component of the Gatherer application, part of the Greenstone digital
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5 | * library suite from the New Zealand Digital Library Project at the
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6 | * University of Waikato, New Zealand.
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7 | *
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8 | * <BR><BR>
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9 | *
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10 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
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11 | *
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12 | * <BR><BR>
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13 | *
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14 | * Copyright (C) 1999 New Zealand Digital Library Project
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15 | *
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16 | * <BR><BR>
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17 | *
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18 | * This program is free software; you can redistribute it and/or modify
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19 | * it under the terms of the GNU General Public License as published by
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20 | * the Free Software Foundation; either version 2 of the License, or
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21 | * (at your option) any later version.
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22 | *
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23 | * <BR><BR>
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24 | *
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25 | * This program is distributed in the hope that it will be useful,
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26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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28 | * GNU General Public License for more details.
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29 | *
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30 | * <BR><BR>
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31 | *
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32 | * You should have received a copy of the GNU General Public License
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33 | * along with this program; if not, write to the Free Software
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34 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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35 | *########################################################################
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36 | */
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37 | package org.greenstone.gatherer.collection;
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38 |
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39 | import java.io.*;
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40 | import org.greenstone.gatherer.Gatherer;
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41 | import org.greenstone.gatherer.cdm.CommandTokenizer;
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42 | import org.greenstone.gatherer.msm.MSMUtils;
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43 | import org.greenstone.gatherer.util.Codec;
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44 | import org.greenstone.gatherer.util.StaticStrings;
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45 | import org.greenstone.gatherer.util.Utility;
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46 | import org.w3c.dom.*;
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47 |
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48 | /** This class provides access to a collection configuration file. This version accepts either a valid xml document or a historical collect.cfg file. */
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49 | public class BasicCollectionConfiguration
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50 | implements Comparable {
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51 |
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52 | private Element creator_element;
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53 | private Element description_element;
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54 | private Element maintainer_element;
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55 | private Element name_element;
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56 | private File file;
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57 | private String creator;
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58 | private String description;
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59 | private String maintainer;
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60 | private String name;
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61 |
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62 | public BasicCollectionConfiguration(File file) {
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63 | this.file = file;
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64 | try {
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65 | String filename = file.getName().toLowerCase();
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66 | if(!filename.exists()) {
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67 | return;
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68 | }
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69 | if(filename.endsWith(".xml")) {
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70 | // This is where G3 compliant code will one day live
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71 | }
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72 | else if(filename.endsWith(".cfg")) {
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73 | FileReader fr = new FileReader(file);
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74 | BufferedReader br = new BufferedReader(fr);
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75 | String command = null;
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76 | while((command = br.readLine()) != null) {
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77 | if(command.length() > 0) {
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78 | // We have to test the end of command for the special character '\'. If found, remove it and append the next line, then repeat.
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79 | while(command.trim().endsWith("\\")) {
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80 | command = command.substring(0, command.lastIndexOf("\\"));
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81 | String next_line = br.readLine();
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82 | if(next_line != null) {
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83 | command = command + next_line;
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84 | }
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85 | next_line = null;
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86 | }
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87 | CommandTokenizer tokenizer = new CommandTokenizer(command, br);
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88 | String command_type_str = tokenizer.nextToken().toLowerCase();
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89 | if(command_type_str == null) {
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90 | // Bad command. Do nothing
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91 | }
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92 | else if(command_type_str.equals(StaticStrings.COLLECTIONMETADATA_CREATOR_STR)) {
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93 | creator = tokenizer.nextToken();
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94 | }
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95 | else if(command_type_str.equals(StaticStrings.COLLECTIONMETADATA_MAINTAINER_STR)) {
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96 | maintainer = tokenizer.nextToken();
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97 | }
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98 | else if(command_type_str.equalsIgnoreCase(StaticStrings.COLLECTIONMETADATA_STR)) {
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99 | String meta_type_str = tokenizer.nextToken();
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100 | String value_str = tokenizer.nextToken();
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101 | // check for language
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102 | String language_str = StaticStrings.ENGLISH_LANGUAGE_STR; // assume the no-lang ones are english, but we shouldn't really do this.
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103 | if(meta_type_str != null && value_str != null) {
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104 | meta_type_str = meta_type_str.toLowerCase();
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105 | if(value_str.startsWith(StaticStrings.LBRACKET_CHARACTER) && value_str.endsWith(StaticStrings.RBRACKET_CHARACTER)) {
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106 | language_str = value_str.substring(value_str.indexOf(StaticStrings.EQUALS_CHARACTER) + 1, value_str.length() - 1);
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107 | language_str = language_str.toLowerCase();
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108 | value_str = tokenizer.nextToken();
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109 | }
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110 | // now we can work out which coll meta we are dealing with
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111 | if (meta_type_str.equals(StaticStrings.COLLECTIONMETADATA_COLLECTIONNAME_STR)) {
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112 | // If this is the first collection title found, then use it, otherwise search for one that more closely matches our choosen interface language
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113 | if (name == null || language_str.equals(Gatherer.dictionary.getLanguage())) {
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114 | name = Codec.transform(value_str, Codec.GREENSTONE_TO_TEXT);
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115 | }
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116 | }
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117 | else if (meta_type_str.equals(StaticStrings.COLLECTIONMETADATA_COLLECTIONEXTRA_STR)) {
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118 | // Again we are either looking for the first description, then after that a language specific one
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119 | if (description == null || language_str.equals(Gatherer.dictionary.getLanguage())) {
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120 | description = Codec.transform(value_str, Codec.GREENSTONE_TO_TEXT);
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121 | }
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122 | }
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123 | }
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124 | language_str = null;
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125 | value_str = null;
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126 | meta_type_str = null;
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127 | } // end of coll meta bit
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128 | command_type_str = null;
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129 | tokenizer = null;
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130 | } // if command.length > 0
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131 | } // while
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132 | command = null;
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133 | br.close();
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134 | fr.close();
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135 | br = null;
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136 | fr = null;
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137 | } // cfg file
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138 | ///ystem.err.println("Parsed collect.cfg");
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139 | ///ystem.err.println("name = " + name);
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140 | ///ystem.err.println("creator = " + creator);
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141 | ///ystem.err.println("maintainer = " + maintainer);
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142 | ///ystem.err.println("description = " + description);
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143 | }
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144 | catch(Exception error) {
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145 | Gatherer.println("Error in CollectionConfiguration.<init>(): " + error);
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146 | Gatherer.printStackTrace(error);
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147 | }
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148 | }
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149 |
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150 | /** Compare this configuration to another for ordering, which essentially compares two strings for ordering.
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151 | * @param other the other Object which is presumably another basic collection configuration
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152 | * @return an integer which is either <0, 0 or >0 if this configuration is naturally less than, equal to or greater than the target object
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153 | */
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154 | public int compareTo(Object other) {
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155 | if(other == null) {
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156 | return -1;
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157 | }
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158 | return toString().compareTo(other.toString());
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159 | }
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160 |
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161 | public boolean equals(Object other) {
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162 | return (compareTo(other) == 0);
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163 | }
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164 |
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165 | /** Retrieve the creators email for this collection.
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166 | * @return a String
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167 | */
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168 | public String getCreator() {
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169 | String result = StaticStrings.EMPTY_STR;
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170 | if(creator_element != null) {
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171 | result = MSMUtils.getValue(creator_element);
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172 | }
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173 | else if(creator != null) {
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174 | result = creator;
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175 | }
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176 | return result;
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177 | }
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178 |
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179 | public String getDescription() {
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180 | String result = StaticStrings.EMPTY_STR;
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181 | if(description_element != null) {
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182 | result = MSMUtils.getValue(description_element);
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183 | }
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184 | else if(description != null) {
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185 | result = description;
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186 | }
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187 | return result;
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188 | }
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189 |
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190 | public File getFile() {
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191 | return file;
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192 | }
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193 |
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194 | public String getMaintainer() {
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195 | String result = StaticStrings.EMPTY_STR;
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196 | if(maintainer_element != null) {
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197 | result = MSMUtils.getValue(maintainer_element);
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198 | }
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199 | else if(maintainer != null) {
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200 | result = maintainer;
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201 | }
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202 | return result;
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203 | }
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204 |
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205 | public String getName() {
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206 | String result = StaticStrings.EMPTY_STR;
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207 | if(name_element != null) {
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208 | result = MSMUtils.getValue(name_element);
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209 | }
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210 | else if(name != null) {
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211 | result = name;
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212 | }
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213 | return result;
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214 | }
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215 |
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216 | /** Retrieve the short name for this collection which, given this current file is in <col_name>/etc/collect.cfg, is the name of this file's parent file's parent.
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217 | * @return the short name of this collection as a String
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218 | */
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219 | public String getShortName() {
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220 | return file.getParentFile().getParentFile().getName();
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221 | }
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222 |
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223 | /** Display the title for this collection. */
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224 | public String toString() {
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225 | return getName() + StaticStrings.SPACE_CHARACTER + StaticStrings.OPEN_PARENTHESIS_CHARACTER + getShortName() + StaticStrings.CLOSE_PARENTHESIS_CHARACTER;
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226 | }
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227 | }
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