1 | /**
|
---|
2 | *############################################################################
|
---|
3 | * A component of the Greenstone Librarian Interface, part of the Greenstone
|
---|
4 | * digital library suite from the New Zealand Digital Library Project at the
|
---|
5 | * University of Waikato, New Zealand.
|
---|
6 | *
|
---|
7 | * Author: Michael Dewsnip, NZDL Project, University of Waikato, NZ
|
---|
8 | *
|
---|
9 | * Copyright (C) 2004 New Zealand Digital Library Project
|
---|
10 | *
|
---|
11 | * This program is free software; you can redistribute it and/or modify
|
---|
12 | * it under the terms of the GNU General Public License as published by
|
---|
13 | * the Free Software Foundation; either version 2 of the License, or
|
---|
14 | * (at your option) any later version.
|
---|
15 | *
|
---|
16 | * This program is distributed in the hope that it will be useful,
|
---|
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
19 | * GNU General Public License for more details.
|
---|
20 | *
|
---|
21 | * You should have received a copy of the GNU General Public License
|
---|
22 | * along with this program; if not, write to the Free Software
|
---|
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
24 | *############################################################################
|
---|
25 | */
|
---|
26 |
|
---|
27 | package org.greenstone.gatherer.metadata;
|
---|
28 |
|
---|
29 |
|
---|
30 | import java.io.*;
|
---|
31 | import java.util.*;
|
---|
32 | import org.greenstone.gatherer.DebugStream;
|
---|
33 | import org.greenstone.gatherer.collection.CollectionTreeNode;
|
---|
34 | import org.greenstone.gatherer.util.XMLTools;
|
---|
35 | import org.w3c.dom.*;
|
---|
36 |
|
---|
37 | import org.greenstone.gatherer.util.Utility;
|
---|
38 |
|
---|
39 | /** This class represents one metadata.xml file */
|
---|
40 | public class MetadataXMLFile
|
---|
41 | extends File
|
---|
42 | {
|
---|
43 | static final private String DESCRIPTION_ELEMENT = "Description";
|
---|
44 | static final private String DIRECTORY_FILENAME = ".*";
|
---|
45 | static final private String FILENAME_ELEMENT = "FileName";
|
---|
46 | static final private String FILESET_ELEMENT = "FileSet";
|
---|
47 | static final private String METADATA_ELEMENT = "Metadata";
|
---|
48 | static final private String[] nonEscapingElements = new String[]{FILENAME_ELEMENT};
|
---|
49 |
|
---|
50 | /** Special metadata field: the filename encoding is a unique sort of metadata in
|
---|
51 | * that it is not just information stored with a collection file, but also needs to
|
---|
52 | * be applied in real-time to the collection file (to its filename) for display. */
|
---|
53 | static final public String FILENAME_ENCODING_METADATA = "gs.filenameEncoding";
|
---|
54 |
|
---|
55 | // To speed things up a bit we keep the last accessed metadata.xml file in memory
|
---|
56 | static private File loaded_file = null;
|
---|
57 | static private Document loaded_file_document = null;
|
---|
58 | static private boolean loaded_file_changed = false;
|
---|
59 |
|
---|
60 |
|
---|
61 | public MetadataXMLFile(String metadata_xml_file_path)
|
---|
62 | {
|
---|
63 | super(metadata_xml_file_path);
|
---|
64 | }
|
---|
65 |
|
---|
66 |
|
---|
67 | public void addMetadata(CollectionTreeNode file_node, ArrayList metadata_values)
|
---|
68 | {
|
---|
69 | // If this metadata.xml file isn't the one currently loaded, load it now
|
---|
70 | if (loaded_file != this) {
|
---|
71 | // First we must save out the currently loaded file
|
---|
72 | saveLoadedFile();
|
---|
73 |
|
---|
74 | // Parse the metadata.xml file
|
---|
75 | Document document = XMLTools.parseXMLFile(this);
|
---|
76 | if (document == null) {
|
---|
77 | System.err.println("Error: Could not parse metadata.xml file " + getAbsolutePath());
|
---|
78 | return;
|
---|
79 | }
|
---|
80 |
|
---|
81 | loaded_file = this;
|
---|
82 | loaded_file_document = document;
|
---|
83 | reEncodeFilenamesInMetadataXML(loaded_file_document);
|
---|
84 |
|
---|
85 | }
|
---|
86 |
|
---|
87 | // Determine the file's path relative to the location of the metadata.xml file
|
---|
88 | String metadata_xml_file_directory_path = FilenameEncoding.fileToURLEncoding(getParentFile());
|
---|
89 | String file_relative_path = file_node.getURLEncodedFilePath().substring(metadata_xml_file_directory_path.length());
|
---|
90 | if (file_relative_path.startsWith(FilenameEncoding.URL_FILE_SEPARATOR)) {
|
---|
91 | file_relative_path = file_relative_path.substring(FilenameEncoding.URL_FILE_SEPARATOR.length());
|
---|
92 | }
|
---|
93 |
|
---|
94 | // Form a regular expression that specifies the scope of the metadata
|
---|
95 | String file_path_regexp;
|
---|
96 | if (file_relative_path.equals("")) {
|
---|
97 | // Special case for matching all files in the directory
|
---|
98 | file_path_regexp = DIRECTORY_FILENAME;
|
---|
99 | }
|
---|
100 | else {
|
---|
101 | // Convert the file path into a regular expression that will match it
|
---|
102 | file_path_regexp = MetadataTools.getRegularExpressionThatMatchesFilePath(file_relative_path);
|
---|
103 | }
|
---|
104 |
|
---|
105 | //System.err.println("MetadataXMLFile.addMetadata() Adding meta for file regexp: "
|
---|
106 | // + file_path_regexp + " - " + org.greenstone.gatherer.util.Utility.debugUnicodeString(file_path_regexp));
|
---|
107 |
|
---|
108 | // Find the appropriate FileSet element for this file
|
---|
109 | Element appropriate_fileset_element = null;
|
---|
110 |
|
---|
111 | // Read all the FileSet elements in the file
|
---|
112 | NodeList fileset_elements_nodelist = loaded_file_document.getElementsByTagName(FILESET_ELEMENT);
|
---|
113 | for (int i = 0; i < fileset_elements_nodelist.getLength(); i++) {
|
---|
114 | Element current_fileset_element = (Element) fileset_elements_nodelist.item(i);
|
---|
115 |
|
---|
116 | // Check the FileName elements of the FileSet to see if we have a match
|
---|
117 | NodeList filename_elements_nodelist = current_fileset_element.getElementsByTagName(FILENAME_ELEMENT);
|
---|
118 | for (int j = 0; j < filename_elements_nodelist.getLength(); j++) {
|
---|
119 | Element current_filename_element = (Element) filename_elements_nodelist.item(j);
|
---|
120 | String current_filename_element_value = XMLTools.getElementTextValue(current_filename_element);
|
---|
121 |
|
---|
122 | // Only exact matches can be extended with new metadata
|
---|
123 | if (current_filename_element_value.equals(file_path_regexp)) {
|
---|
124 | appropriate_fileset_element = current_fileset_element;
|
---|
125 | break;
|
---|
126 | }
|
---|
127 | }
|
---|
128 | }
|
---|
129 |
|
---|
130 | // If no appropriate FileSet element exists create a new one for this file
|
---|
131 | if (appropriate_fileset_element == null) {
|
---|
132 | DebugStream.println("Creating new FileSet element for file since none exists..."+file_path_regexp);
|
---|
133 | appropriate_fileset_element = loaded_file_document.createElement(FILESET_ELEMENT);
|
---|
134 |
|
---|
135 | Element new_filename_element = loaded_file_document.createElement(FILENAME_ELEMENT);
|
---|
136 | new_filename_element.appendChild(loaded_file_document.createTextNode(file_path_regexp));
|
---|
137 | appropriate_fileset_element.appendChild(new_filename_element);
|
---|
138 |
|
---|
139 | Element new_description_element = loaded_file_document.createElement(DESCRIPTION_ELEMENT);
|
---|
140 | appropriate_fileset_element.appendChild(new_description_element);
|
---|
141 |
|
---|
142 | // add the fileset element for .* at the top: especially important for
|
---|
143 | // non-accumulating (and override mode) meta. Other type fileset elements can be appended
|
---|
144 | if(file_path_regexp.equals(DIRECTORY_FILENAME)) {
|
---|
145 | loaded_file_document.getDocumentElement().insertBefore(appropriate_fileset_element,
|
---|
146 | loaded_file_document.getDocumentElement().getFirstChild());
|
---|
147 | } else {
|
---|
148 | loaded_file_document.getDocumentElement().appendChild(appropriate_fileset_element);
|
---|
149 | }
|
---|
150 | }
|
---|
151 |
|
---|
152 | // Add each of the metadata values to the FileSet's Description element
|
---|
153 | Element description_element = (Element) appropriate_fileset_element.getElementsByTagName(DESCRIPTION_ELEMENT).item(0);
|
---|
154 | for (int i = 0; i < metadata_values.size(); i++) {
|
---|
155 | MetadataValue metadata_value = (MetadataValue) metadata_values.get(i);
|
---|
156 | String metadata_element_name_full = metadata_value.getMetadataElement().getFullName();
|
---|
157 |
|
---|
158 | // Remove any characters that are invalid in XML
|
---|
159 | String metadata_value_string = XMLTools.removeInvalidCharacters(metadata_value.getFullValue());
|
---|
160 |
|
---|
161 | // Square brackets need to be escaped because they are a special character in Greenstone
|
---|
162 | metadata_value_string = metadata_value_string.replaceAll("\\[", "[");
|
---|
163 | metadata_value_string = metadata_value_string.replaceAll("\\]", "]");
|
---|
164 |
|
---|
165 | // the gs.filenameEncoding metadata is unique in that, when added, removed or
|
---|
166 | // changed, it must be applied on the file(name) whose metadata has been adjusted
|
---|
167 | if(metadata_element_name_full.equals(FILENAME_ENCODING_METADATA)) {
|
---|
168 | metadata_value_string = processFilenameEncoding(file_path_regexp,
|
---|
169 | file_node, metadata_value_string, false);
|
---|
170 | // true only if removing meta
|
---|
171 | }
|
---|
172 |
|
---|
173 | // Check if this piece of metadata has already been assigned to this FileSet element
|
---|
174 | boolean metadata_already_assigned = false;
|
---|
175 | NodeList metadata_elements_nodelist = description_element.getElementsByTagName(METADATA_ELEMENT);
|
---|
176 | for (int k = 0; k < metadata_elements_nodelist.getLength(); k++) {
|
---|
177 | Element current_metadata_element = (Element) metadata_elements_nodelist.item(k);
|
---|
178 |
|
---|
179 | // Check if the metadata element name matches
|
---|
180 | String current_metadata_element_name_full = current_metadata_element.getAttribute("name");
|
---|
181 | if (current_metadata_element_name_full.equals(metadata_element_name_full)) {
|
---|
182 | // if the metadata must not accumulate, then edit the current value
|
---|
183 | if (!metadata_value.isAccumulatingMetadata()) {
|
---|
184 | XMLTools.setNodeText(current_metadata_element, metadata_value_string);
|
---|
185 | metadata_already_assigned = true;
|
---|
186 | break;
|
---|
187 | }
|
---|
188 | // Check if the metadata element value matches
|
---|
189 | String current_metadata_value_string = XMLTools.getElementTextValue(current_metadata_element);
|
---|
190 | if (current_metadata_value_string.equals(metadata_value_string)) {
|
---|
191 | // Metadata already assigned
|
---|
192 | metadata_already_assigned = true;
|
---|
193 | break;
|
---|
194 | }
|
---|
195 | }
|
---|
196 | }
|
---|
197 |
|
---|
198 | // If the piece of metadata hasn't already been assigned, add it now
|
---|
199 | if (!metadata_already_assigned) {
|
---|
200 | // Create a new Metadata element to record this metadata
|
---|
201 | Element new_metadata_element = loaded_file_document.createElement(METADATA_ELEMENT);
|
---|
202 | new_metadata_element.setAttribute("name", metadata_value.getMetadataElement().getFullName());
|
---|
203 | new_metadata_element.setAttribute("mode", (metadata_value.isAccumulatingMetadata() ? "accumulate" : "override"));
|
---|
204 | new_metadata_element.appendChild(loaded_file_document.createTextNode(metadata_value_string));
|
---|
205 |
|
---|
206 | // Accumulating metadata: add at the end
|
---|
207 | if (metadata_value.isAccumulatingMetadata()) {
|
---|
208 | description_element.appendChild(new_metadata_element);
|
---|
209 | }
|
---|
210 | // Override metadata: add at the start (so it overrides inherited metadata without affecting other assigned metadata)
|
---|
211 | else {
|
---|
212 | description_element.insertBefore(new_metadata_element, description_element.getFirstChild());
|
---|
213 | }
|
---|
214 | }
|
---|
215 | }
|
---|
216 |
|
---|
217 | // Remember that we've changed the file so it gets saved when a new one is loaded
|
---|
218 | loaded_file_changed = true;
|
---|
219 | }
|
---|
220 |
|
---|
221 |
|
---|
222 | public ArrayList getMetadataAssignedToFile(File file, boolean fileEncodingOnly)
|
---|
223 | {
|
---|
224 | // If this metadata.xml file isn't the one currently loaded, load it now
|
---|
225 | if (loaded_file != this) {
|
---|
226 | // First we must save out the currently loaded file
|
---|
227 | saveLoadedFile();
|
---|
228 |
|
---|
229 | // Parse the metadata.xml file
|
---|
230 | Document document = XMLTools.parseXMLFile(this);
|
---|
231 | if (document == null) {
|
---|
232 | System.err.println("Error: Could not parse metadata.xml file " + getAbsolutePath());
|
---|
233 | return new ArrayList();
|
---|
234 | }
|
---|
235 |
|
---|
236 | loaded_file = this;
|
---|
237 | loaded_file_document = document;
|
---|
238 |
|
---|
239 | reEncodeFilenamesInMetadataXML(loaded_file_document);
|
---|
240 | }
|
---|
241 |
|
---|
242 | // Determine the file's path relative to the location of the metadata.xml file
|
---|
243 | String file_relative_path = FilenameEncoding.fileToURLEncoding(file);
|
---|
244 | File metadata_xml_file_directory = getParentFile();
|
---|
245 | String metadata_xml_file_directory_path = FilenameEncoding.fileToURLEncoding(metadata_xml_file_directory);
|
---|
246 | file_relative_path = file_relative_path.substring(metadata_xml_file_directory_path.length());
|
---|
247 |
|
---|
248 | if (file_relative_path.startsWith(FilenameEncoding.URL_FILE_SEPARATOR)) {
|
---|
249 | file_relative_path = file_relative_path.substring(FilenameEncoding.URL_FILE_SEPARATOR.length());
|
---|
250 | }
|
---|
251 |
|
---|
252 | // Build up a list of metadata assigned to this file
|
---|
253 | ArrayList metadata_values = new ArrayList();
|
---|
254 |
|
---|
255 | // Read all the FileSet elements in the file
|
---|
256 | NodeList fileset_elements_nodelist = loaded_file_document.getElementsByTagName(FILESET_ELEMENT);
|
---|
257 | for (int i = 0; i < fileset_elements_nodelist.getLength(); i++) {
|
---|
258 | Element current_fileset_element = (Element) fileset_elements_nodelist.item(i);
|
---|
259 | boolean current_fileset_matches = false;
|
---|
260 | boolean is_one_file_only_metadata = true;
|
---|
261 | File folder_metadata_inherited_from = null;
|
---|
262 |
|
---|
263 | // Check the FileName elements of the FileSet to see if we have a match
|
---|
264 | NodeList filename_elements_nodelist = current_fileset_element.getElementsByTagName(FILENAME_ELEMENT);
|
---|
265 | for (int j = 0; j < filename_elements_nodelist.getLength(); j++) {
|
---|
266 | Element current_filename_element = (Element) filename_elements_nodelist.item(j);
|
---|
267 | String current_filename_element_value = XMLTools.getElementTextValue(current_filename_element);
|
---|
268 |
|
---|
269 | //System.err.println("\n Original TAIL filename was: " + Utility.debugUnicodeString(file.getName()));
|
---|
270 | String hexdecoded_regexed_file_relative_path = FilenameEncoding.decodeStringContainingHexEntities(file_relative_path);
|
---|
271 | //System.err.println("Looking in meta.xml for hexdecoded_regexed_file_RELATIVE_path: " + hexdecoded_regexed_file_relative_path
|
---|
272 | //+ " - debug version: " + Utility.debugUnicodeString(hexdecoded_regexed_file_relative_path));
|
---|
273 |
|
---|
274 | // Does this fileset specify metadata for one file only?
|
---|
275 | is_one_file_only_metadata = true;
|
---|
276 | if (current_filename_element_value.indexOf("*") != -1 && !current_filename_element_value.equals(DIRECTORY_FILENAME)) {
|
---|
277 | // No, it specifies metadata for multiple files (but not all the files in the directory)
|
---|
278 | is_one_file_only_metadata = false;
|
---|
279 | }
|
---|
280 |
|
---|
281 | String hexdecoded_current_filename_element_value = FilenameEncoding.decodeStringContainingHexEntities(current_filename_element_value);
|
---|
282 | //System.err.println(" Checking to see if it matches " + hexdecoded_current_filename_element_value + " - debug: " + Utility.debugUnicodeString(hexdecoded_current_filename_element_value));
|
---|
283 | //System.err.println(" Checking to see if it matches " + current_filename_element_value + " - debug: " + Utility.debugUnicodeString(current_filename_element_value));
|
---|
284 |
|
---|
285 | // This fileset specifies metadata for the file
|
---|
286 | // MetadataXMLFile.addMetadata(CollectionTreeNode, ArrayList) stored filename in uppercase hex
|
---|
287 | // so need to make sure everything hex has been decoded (no more hex) to compare apples with apples
|
---|
288 | if (hexdecoded_regexed_file_relative_path.matches(hexdecoded_current_filename_element_value)) { //if (file_relative_path.matches(current_filename_element_value)) {
|
---|
289 | //System.err.println(" @@@ Found a match in meta.xml for hexdecoded_regexed_file_relative_path: " + hexdecoded_regexed_file_relative_path + "\n");
|
---|
290 | current_fileset_matches = true;
|
---|
291 | if (!file_relative_path.equals("") && current_filename_element_value.equals(DIRECTORY_FILENAME)) {
|
---|
292 | folder_metadata_inherited_from = metadata_xml_file_directory;
|
---|
293 | }
|
---|
294 | break;
|
---|
295 | } //else {
|
---|
296 | //System.err.println( hexdecoded_regexed_file_relative_path + " does not match " + hexdecoded_current_filename_element_value);
|
---|
297 | //System.err.println( Utility.debugUnicodeString(hexdecoded_regexed_file_relative_path) + " does not match " + Utility.debugUnicodeString(hexdecoded_current_filename_element_value));
|
---|
298 | //}
|
---|
299 |
|
---|
300 | // This fileset specifies metadata for the folder the file is in
|
---|
301 | if (hexdecoded_regexed_file_relative_path.startsWith(hexdecoded_current_filename_element_value + FilenameEncoding.URL_FILE_SEPARATOR)) {
|
---|
302 | current_fileset_matches = true;
|
---|
303 | folder_metadata_inherited_from = new File(metadata_xml_file_directory, current_filename_element_value);
|
---|
304 | break;
|
---|
305 | }
|
---|
306 | }
|
---|
307 |
|
---|
308 | // The FileSet doesn't apply, so move onto the next one
|
---|
309 | if (current_fileset_matches == false) {
|
---|
310 | continue;
|
---|
311 | }
|
---|
312 |
|
---|
313 | // Read all the Metadata elements in the fileset
|
---|
314 | NodeList metadata_elements_nodelist = current_fileset_element.getElementsByTagName(METADATA_ELEMENT);
|
---|
315 | for (int k = 0; k < metadata_elements_nodelist.getLength(); k++) {
|
---|
316 | Element current_metadata_element = (Element) metadata_elements_nodelist.item(k);
|
---|
317 | String metadata_element_name_full = current_metadata_element.getAttribute("name");
|
---|
318 | // if we're only looking for fileEncoding metadata and this isn't it, skip to the next
|
---|
319 | if(fileEncodingOnly && !metadata_element_name_full.equals(FILENAME_ENCODING_METADATA)) {
|
---|
320 | continue;
|
---|
321 | }
|
---|
322 | String metadata_set_namespace = MetadataTools.getMetadataSetNamespace(metadata_element_name_full);
|
---|
323 |
|
---|
324 | // Ignore legacy crap
|
---|
325 | if (metadata_set_namespace.equals("hidden")) {
|
---|
326 | continue;
|
---|
327 | }
|
---|
328 |
|
---|
329 | MetadataSet metadata_set = MetadataSetManager.getMetadataSet(metadata_set_namespace);
|
---|
330 | if (metadata_set == null) {
|
---|
331 | // The metadata set isn't loaded, so give the option of mapping the element into a loaded set
|
---|
332 | String target_metadata_element_name_full = MetadataSetManager.mapUnloadedMetadataElement(metadata_element_name_full);
|
---|
333 | if (target_metadata_element_name_full == null || target_metadata_element_name_full.equals("")) {
|
---|
334 | // Skip this element if we still don't have a loaded element for it
|
---|
335 | continue;
|
---|
336 | }
|
---|
337 |
|
---|
338 | metadata_element_name_full = target_metadata_element_name_full;
|
---|
339 | metadata_set_namespace = MetadataTools.getMetadataSetNamespace(metadata_element_name_full);
|
---|
340 | metadata_set = MetadataSetManager.getMetadataSet(metadata_set_namespace);
|
---|
341 | }
|
---|
342 |
|
---|
343 | MetadataElement metadata_element = MetadataTools.getMetadataElementWithName(metadata_element_name_full);
|
---|
344 |
|
---|
345 | String metadata_element_name = MetadataTools.getMetadataElementName(metadata_element_name_full);
|
---|
346 | // If the element doesn't exist in the metadata set, we're not interested
|
---|
347 | //Shaoqun modified. It needs to be added to metadata_set because the user might disable skim file
|
---|
348 | if (metadata_element == null) {
|
---|
349 | metadata_element = metadata_set.addMetadataElementForThisSession(metadata_element_name);
|
---|
350 | // continue;
|
---|
351 | }
|
---|
352 |
|
---|
353 | // Square brackets need to be escaped because they are a special character in Greenstone
|
---|
354 | String metadata_value_string = XMLTools.getElementTextValue(current_metadata_element);
|
---|
355 | metadata_value_string = metadata_value_string.replaceAll("[", "[");
|
---|
356 | metadata_value_string = metadata_value_string.replaceAll("]", "]");
|
---|
357 |
|
---|
358 | MetadataValueTreeNode metadata_value_tree_node = metadata_element.getMetadataValueTreeNode(metadata_value_string);
|
---|
359 |
|
---|
360 | // If there is no metadata value tree node for this value, create it
|
---|
361 | if (metadata_value_tree_node == null) {
|
---|
362 | DebugStream.println("Note: No value tree node for metadata value \"" + metadata_value_string + "\"");
|
---|
363 | metadata_element.addMetadataValue(metadata_value_string);
|
---|
364 | metadata_value_tree_node = metadata_element.getMetadataValueTreeNode(metadata_value_string);
|
---|
365 | }
|
---|
366 |
|
---|
367 | MetadataValue metadata_value = new MetadataValue(metadata_element, metadata_value_tree_node);
|
---|
368 | metadata_value.inheritsMetadataFromFolder(folder_metadata_inherited_from);
|
---|
369 | metadata_value.setIsOneFileOnlyMetadata(is_one_file_only_metadata);
|
---|
370 |
|
---|
371 | // Is this accumulating metadata?
|
---|
372 | if (current_metadata_element.getAttribute("mode").equals("accumulate")) {
|
---|
373 | metadata_value.setIsAccumulatingMetadata(true);
|
---|
374 | }
|
---|
375 |
|
---|
376 | // Add the new metadata value to the list
|
---|
377 | metadata_values.add(metadata_value);
|
---|
378 | }
|
---|
379 | }
|
---|
380 |
|
---|
381 | return metadata_values;
|
---|
382 | }
|
---|
383 |
|
---|
384 |
|
---|
385 | public void removeMetadata(CollectionTreeNode file_node, ArrayList metadata_values)
|
---|
386 | {
|
---|
387 | // If this metadata.xml file isn't the one currently loaded, load it now
|
---|
388 | if (loaded_file != this) {
|
---|
389 | // First we must save out the currently loaded file
|
---|
390 | saveLoadedFile();
|
---|
391 |
|
---|
392 | // Parse the metadata.xml file
|
---|
393 | Document document = XMLTools.parseXMLFile(this);
|
---|
394 | if (document == null) {
|
---|
395 | System.err.println("Error: Could not parse metadata.xml file " + getAbsolutePath());
|
---|
396 | return;
|
---|
397 | }
|
---|
398 |
|
---|
399 | loaded_file = this;
|
---|
400 | loaded_file_document = document;
|
---|
401 |
|
---|
402 | reEncodeFilenamesInMetadataXML(loaded_file_document);
|
---|
403 | }
|
---|
404 |
|
---|
405 | // Determine the file's path relative to the location of the metadata.xml file
|
---|
406 | String metadata_xml_file_directory_path = FilenameEncoding.fileToURLEncoding(getParentFile());
|
---|
407 | String file_relative_path = file_node.getURLEncodedFilePath().substring(metadata_xml_file_directory_path.length());
|
---|
408 | if (file_relative_path.startsWith(FilenameEncoding.URL_FILE_SEPARATOR)) {
|
---|
409 | file_relative_path = file_relative_path.substring(FilenameEncoding.URL_FILE_SEPARATOR.length());
|
---|
410 | }
|
---|
411 |
|
---|
412 | // Form a regular expression that specifies the scope of the metadata
|
---|
413 | String file_path_regexp;
|
---|
414 | if (file_relative_path.equals("")) {
|
---|
415 | // Special case for matching all files in the directory
|
---|
416 | file_path_regexp = DIRECTORY_FILENAME;
|
---|
417 | }
|
---|
418 | else {
|
---|
419 | // Convert the file path into a regular expression that will match it
|
---|
420 | file_path_regexp = MetadataTools.getRegularExpressionThatMatchesFilePath(file_relative_path);
|
---|
421 | }
|
---|
422 |
|
---|
423 | // Find the appropriate FileSet element for this file
|
---|
424 | Element appropriate_fileset_element = null;
|
---|
425 |
|
---|
426 | // Read all the FileSet elements in the file
|
---|
427 | NodeList fileset_elements_nodelist = loaded_file_document.getElementsByTagName(FILESET_ELEMENT);
|
---|
428 | for (int i = 0; i < fileset_elements_nodelist.getLength(); i++) {
|
---|
429 | Element current_fileset_element = (Element) fileset_elements_nodelist.item(i);
|
---|
430 |
|
---|
431 | // Check the FileName elements of the FileSet to see if we have a match
|
---|
432 | NodeList filename_elements_nodelist = current_fileset_element.getElementsByTagName(FILENAME_ELEMENT);
|
---|
433 | for (int j = 0; j < filename_elements_nodelist.getLength(); j++) {
|
---|
434 | Element current_filename_element = (Element) filename_elements_nodelist.item(j);
|
---|
435 | String current_filename_element_value = XMLTools.getElementTextValue(current_filename_element);
|
---|
436 |
|
---|
437 | // Only exact matches can be extended with new metadata
|
---|
438 | if (current_filename_element_value.equals(file_path_regexp)) {
|
---|
439 | appropriate_fileset_element = current_fileset_element;
|
---|
440 | break;
|
---|
441 | }
|
---|
442 | }
|
---|
443 | }
|
---|
444 |
|
---|
445 | // If no appropriate FileSet element exists the metadata isn't assigned in this metadata.xml file
|
---|
446 | if (appropriate_fileset_element == null) {
|
---|
447 | DebugStream.println("Note: No appropriate FileSet element found when removing metadata from " + this);
|
---|
448 | return;
|
---|
449 | }
|
---|
450 |
|
---|
451 | // Remove each of the metadata values from the FileSet's Description element
|
---|
452 | for (int i = 0; i < metadata_values.size(); i++) {
|
---|
453 | MetadataValue metadata_value = (MetadataValue) metadata_values.get(i);
|
---|
454 |
|
---|
455 | // Remove any characters that are invalid in XML
|
---|
456 | String metadata_value_string = XMLTools.removeInvalidCharacters(metadata_value.getFullValue());
|
---|
457 |
|
---|
458 | // Square brackets need to be escaped because they are a special character in Greenstone
|
---|
459 | metadata_value_string = metadata_value_string.replaceAll("\\[", "[");
|
---|
460 | metadata_value_string = metadata_value_string.replaceAll("\\]", "]");
|
---|
461 |
|
---|
462 | // Find the Metadata element to delete from the fileset
|
---|
463 | String metadata_element_name_full = metadata_value.getMetadataElement().getFullName();
|
---|
464 | NodeList metadata_elements_nodelist = appropriate_fileset_element.getElementsByTagName(METADATA_ELEMENT);
|
---|
465 | for (int k = 0; k < metadata_elements_nodelist.getLength(); k++) {
|
---|
466 | Element current_metadata_element = (Element) metadata_elements_nodelist.item(k);
|
---|
467 |
|
---|
468 | // Check the metadata element name matches
|
---|
469 | String current_metadata_element_name_full = current_metadata_element.getAttribute("name");
|
---|
470 | if (current_metadata_element_name_full.equals(metadata_element_name_full)) {
|
---|
471 | // Check the metadata element value matches
|
---|
472 | String current_metadata_value_string = XMLTools.getElementTextValue(current_metadata_element);
|
---|
473 | if (current_metadata_value_string.equals(metadata_value_string)) {
|
---|
474 |
|
---|
475 | // Remove this Metadata element
|
---|
476 | current_metadata_element.getParentNode().removeChild(current_metadata_element);
|
---|
477 |
|
---|
478 | // the gs.filenameEncoding metadata is unique in that, when added, removed or
|
---|
479 | // changed, it must be applied on the file(name) whose metadata has been adjusted
|
---|
480 | if(current_metadata_element_name_full.equals(FILENAME_ENCODING_METADATA)) {
|
---|
481 |
|
---|
482 | // metadata_value_string will hereafter be the inherited gs.FilenameEncoding
|
---|
483 | // metadata (if any), now that the value at this level has been removed
|
---|
484 | metadata_value_string = processFilenameEncoding(file_path_regexp,
|
---|
485 | file_node, "", true); // true only if *removing* this meta
|
---|
486 | }
|
---|
487 |
|
---|
488 | // If there are no Metadata elements left now, remove the (empty) FileSet element
|
---|
489 | if (metadata_elements_nodelist.getLength() == 0) {
|
---|
490 | appropriate_fileset_element.getParentNode().removeChild(appropriate_fileset_element);
|
---|
491 | }
|
---|
492 |
|
---|
493 | break;
|
---|
494 | }
|
---|
495 | }
|
---|
496 | }
|
---|
497 | }
|
---|
498 |
|
---|
499 | // Remember that we've changed the file so it gets saved when a new one is loaded
|
---|
500 | loaded_file_changed = true;
|
---|
501 | }
|
---|
502 |
|
---|
503 |
|
---|
504 | public void replaceMetadata(CollectionTreeNode file_node, MetadataValue old_metadata_value, MetadataValue new_metadata_value)
|
---|
505 | {
|
---|
506 | // If this metadata.xml file isn't the one currently loaded, load it now
|
---|
507 | if (loaded_file != this) {
|
---|
508 | // First we must save out the currently loaded file
|
---|
509 | saveLoadedFile();
|
---|
510 |
|
---|
511 | // Parse the metadata.xml file
|
---|
512 | Document document = XMLTools.parseXMLFile(this);
|
---|
513 | if (document == null) {
|
---|
514 | System.err.println("Error: Could not parse metadata.xml file " + getAbsolutePath());
|
---|
515 | return;
|
---|
516 | }
|
---|
517 |
|
---|
518 | loaded_file = this;
|
---|
519 | loaded_file_document = document;
|
---|
520 |
|
---|
521 | reEncodeFilenamesInMetadataXML(loaded_file_document);
|
---|
522 | }
|
---|
523 |
|
---|
524 | // Determine the file's path relative to the location of the metadata.xml file
|
---|
525 | String metadata_xml_file_directory_path = FilenameEncoding.fileToURLEncoding(getParentFile());
|
---|
526 | String file_relative_path = file_node.getURLEncodedFilePath().substring(metadata_xml_file_directory_path.length());
|
---|
527 | if (file_relative_path.startsWith(FilenameEncoding.URL_FILE_SEPARATOR)) {
|
---|
528 | file_relative_path = file_relative_path.substring(FilenameEncoding.URL_FILE_SEPARATOR.length());
|
---|
529 | }
|
---|
530 |
|
---|
531 | // Form a regular expression that specifies the scope of the metadata
|
---|
532 | String file_path_regexp;
|
---|
533 | if (file_relative_path.equals("")) {
|
---|
534 | // Special case for matching all files in the directory
|
---|
535 | file_path_regexp = DIRECTORY_FILENAME;
|
---|
536 | }
|
---|
537 | else {
|
---|
538 | // Convert the file path into a regular expression that will match it
|
---|
539 | file_path_regexp = MetadataTools.getRegularExpressionThatMatchesFilePath(file_relative_path);
|
---|
540 | }
|
---|
541 |
|
---|
542 | // Remove any characters that are invalid in XML
|
---|
543 | String old_metadata_value_string = XMLTools.removeInvalidCharacters(old_metadata_value.getFullValue());
|
---|
544 | String new_metadata_value_string = XMLTools.removeInvalidCharacters(new_metadata_value.getFullValue());
|
---|
545 |
|
---|
546 | // Square brackets need to be escaped because they are a special character in Greenstone
|
---|
547 | old_metadata_value_string = old_metadata_value_string.replaceAll("\\[", "[");
|
---|
548 | old_metadata_value_string = old_metadata_value_string.replaceAll("\\]", "]");
|
---|
549 | new_metadata_value_string = new_metadata_value_string.replaceAll("\\[", "[");
|
---|
550 | new_metadata_value_string = new_metadata_value_string.replaceAll("\\]", "]");
|
---|
551 |
|
---|
552 | // Read all the FileSet elements in the file
|
---|
553 | NodeList fileset_elements_nodelist = loaded_file_document.getElementsByTagName(FILESET_ELEMENT);
|
---|
554 | for (int i = 0; i < fileset_elements_nodelist.getLength(); i++) {
|
---|
555 | Element current_fileset_element = (Element) fileset_elements_nodelist.item(i);
|
---|
556 | boolean current_fileset_matches = false;
|
---|
557 |
|
---|
558 | // Check the FileName elements of the FileSet to see if we have a match
|
---|
559 | NodeList filename_elements_nodelist = current_fileset_element.getElementsByTagName(FILENAME_ELEMENT);
|
---|
560 | for (int j = 0; j < filename_elements_nodelist.getLength(); j++) {
|
---|
561 | Element current_filename_element = (Element) filename_elements_nodelist.item(j);
|
---|
562 | String current_filename_element_value = XMLTools.getElementTextValue(current_filename_element);
|
---|
563 |
|
---|
564 | // Only exact matches can be edited
|
---|
565 | if (current_filename_element_value.equals(file_path_regexp)) {
|
---|
566 | current_fileset_matches = true;
|
---|
567 | break;
|
---|
568 | }
|
---|
569 | }
|
---|
570 |
|
---|
571 | // The FileSet doesn't apply, so move onto the next one
|
---|
572 | if (current_fileset_matches == false) {
|
---|
573 | continue;
|
---|
574 | }
|
---|
575 |
|
---|
576 | // Each metadata value is only allowed to be assigned once
|
---|
577 | boolean new_metadata_value_already_exists = false;
|
---|
578 | Element metadata_element_to_edit = null;
|
---|
579 |
|
---|
580 | // Find the Metadata element to replace in the fileset
|
---|
581 | String metadata_element_name_full = old_metadata_value.getMetadataElement().getFullName();
|
---|
582 | NodeList metadata_elements_nodelist = current_fileset_element.getElementsByTagName(METADATA_ELEMENT);
|
---|
583 | for (int k = 0; k < metadata_elements_nodelist.getLength(); k++) {
|
---|
584 | Element current_metadata_element = (Element) metadata_elements_nodelist.item(k);
|
---|
585 |
|
---|
586 | // Check the metadata element name matches
|
---|
587 | String current_metadata_element_name_full = current_metadata_element.getAttribute("name");
|
---|
588 | if (!current_metadata_element_name_full.equals(metadata_element_name_full)) {
|
---|
589 | continue;
|
---|
590 | }
|
---|
591 |
|
---|
592 | // Check the new metadata value doesn't already exist
|
---|
593 | String current_metadata_value_string = XMLTools.getElementTextValue(current_metadata_element);
|
---|
594 | if (current_metadata_value_string.equals(new_metadata_value_string)) {
|
---|
595 | new_metadata_value_already_exists = true;
|
---|
596 | }
|
---|
597 |
|
---|
598 | // Check the metadata element value matches
|
---|
599 | if (current_metadata_value_string.equals(old_metadata_value_string)) {
|
---|
600 | metadata_element_to_edit = current_metadata_element;
|
---|
601 | }
|
---|
602 | }
|
---|
603 |
|
---|
604 | // If the new metadata value already existed, remove the original value
|
---|
605 | if (new_metadata_value_already_exists) {
|
---|
606 | if(metadata_element_to_edit != null) { //?????????
|
---|
607 | metadata_element_to_edit.getParentNode().removeChild(metadata_element_to_edit);
|
---|
608 | } else {
|
---|
609 | System.err.println("ERROR MetadataXMLFile: metadata_element_to_edit is null");
|
---|
610 | }
|
---|
611 | }
|
---|
612 | // Otherwise replace the old value with the new value
|
---|
613 | // Ensure metadata_element_to_edit isn't null (may occur when multiple files are selected)
|
---|
614 | else if (metadata_element_to_edit != null) {
|
---|
615 |
|
---|
616 | // the gs.filenameEncoding metadata is unique in that, when added, removed or
|
---|
617 | // changed, it must be applied on the file(name) whose metadata has been adjusted
|
---|
618 | if(metadata_element_name_full.equals(FILENAME_ENCODING_METADATA)) {
|
---|
619 | new_metadata_value_string = processFilenameEncoding(file_path_regexp, file_node, new_metadata_value_string, false);
|
---|
620 | // true only if removing meta
|
---|
621 | }
|
---|
622 | XMLTools.setElementTextValue(metadata_element_to_edit, new_metadata_value_string);
|
---|
623 | }
|
---|
624 | }
|
---|
625 |
|
---|
626 | // Remember that we've changed the file so it gets saved when a new one is loaded
|
---|
627 | loaded_file_changed = true;
|
---|
628 | }
|
---|
629 |
|
---|
630 |
|
---|
631 | static public void saveLoadedFile()
|
---|
632 | {
|
---|
633 | // If we have a file loaded into memory and it has been modified, save it now
|
---|
634 | if (loaded_file != null && loaded_file_changed == true) {
|
---|
635 | //System.err.println("START saveLoadedFile(), loaded_file_document:\n" + XMLTools.elementToString(loaded_file_document.getDocumentElement(), true));
|
---|
636 |
|
---|
637 | XMLTools.writeXMLFile(loaded_file, loaded_file_document, nonEscapingElements);
|
---|
638 |
|
---|
639 | loaded_file_changed = false;
|
---|
640 | }
|
---|
641 | }
|
---|
642 |
|
---|
643 | /**
|
---|
644 | * parseXML(metadata.xml) has the side-effect of resolving html entities.
|
---|
645 | * Although this is not done by the GLIEntityResolver usage in parseXML(), something
|
---|
646 | * in parseXML() is resolving the html entities, including those used in carefully
|
---|
647 | * html-entity-escaped filenames.
|
---|
648 | * We need to get the filenames in the DOM correct after parsing a metadata.xml file
|
---|
649 | * into memory, so that we have the correct filenames and so that we'll write it out correctly.
|
---|
650 | * Therefore, always call this method after a successful parseXML() call on a metadata.xml.
|
---|
651 | * @param doc is the Document where the FILENAME_ELEMENTs need to be re-encoded.
|
---|
652 | * At the end of this function, the doc will be modified with the re-encoded filenames.
|
---|
653 | *
|
---|
654 | */
|
---|
655 | static private void reEncodeFilenamesInMetadataXML(Document doc) {
|
---|
656 | if(!FilenameEncoding.MULTIPLE_FILENAME_ENCODINGS_SUPPORTED) {
|
---|
657 | return;
|
---|
658 | }
|
---|
659 |
|
---|
660 | String curr_directory_path = FilenameEncoding.fullFilepathToURLEncoding("."); // returns the curr dir path after removing the /./ at end
|
---|
661 | //System.err.println("@@@ curr_directory_path: " + curr_directory_path);
|
---|
662 |
|
---|
663 | //System.err.println("PARSED loaded_file contains:\n" + XMLTools.elementToString(doc.getDocumentElement(), true));
|
---|
664 |
|
---|
665 | // Read all the FileSet elements in the file
|
---|
666 | NodeList fileset_elements_nodelist = doc.getElementsByTagName(FILESET_ELEMENT);
|
---|
667 | for (int i = 0; i < fileset_elements_nodelist.getLength(); i++) {
|
---|
668 | Element current_fileset_element = (Element) fileset_elements_nodelist.item(i);
|
---|
669 |
|
---|
670 | // get the value of all FileName elements
|
---|
671 | NodeList filename_elements_nodelist = current_fileset_element.getElementsByTagName(FILENAME_ELEMENT);
|
---|
672 | for (int j = 0; j < filename_elements_nodelist.getLength(); j++) {
|
---|
673 | Element filename_element = (Element) filename_elements_nodelist.item(j);
|
---|
674 | String filename = XMLTools.getElementTextValue(filename_element);
|
---|
675 | if(!filename.equals(DIRECTORY_FILENAME)) {
|
---|
676 | // Reencode filename after parseXML() had the side-effect of decoding entities in filename elements
|
---|
677 |
|
---|
678 | //System.err.println("Filename before reencoding was: " + filename);
|
---|
679 |
|
---|
680 | // Can't convert to URI with backslash-escaped chars (backslash used in regexed filename are illegal in URI object
|
---|
681 | // created by filenameToURLEncoding). So replace backslashes in regex with url-encoded hex-value of backslash, %5C.
|
---|
682 | String encoded_filename = filename.replace("\\", "%5C");
|
---|
683 |
|
---|
684 | // get the URL encoded filename preserving special encodings, with any curr_directory_path prefix removed
|
---|
685 | encoded_filename = FilenameEncoding.filenameToURLEncodingWithPrefixRemoved(encoded_filename, curr_directory_path);
|
---|
686 |
|
---|
687 | // Reintrodudce the backslash characters in place of their %5C hex placeholders
|
---|
688 | encoded_filename = encoded_filename.replace("%5C", "\\");
|
---|
689 |
|
---|
690 | // Update filename element in DOM
|
---|
691 | XMLTools.setElementTextValue(filename_element, encoded_filename);
|
---|
692 | //System.err.println("Filename after reencoding was: " + encoded_filename);
|
---|
693 | }
|
---|
694 | }
|
---|
695 | }
|
---|
696 | //System.err.println("RE-ENCODED loaded_file contains:\n" + XMLTools.elementToString(doc.getDocumentElement(), true));
|
---|
697 | }
|
---|
698 |
|
---|
699 | /**
|
---|
700 | * Every metadata.xml file must be skimmed when a collection is opened, for three very important reasons:
|
---|
701 | * - To handle any non-namespaced metadata in the metadata.xml files (this is mapped and the files rewritten)
|
---|
702 | * - To get a complete list of the metadata elements in the collection (used in Design and Format panes)
|
---|
703 | * - To build complete and accurate metadata value trees (used in the Enrich pane)
|
---|
704 | */
|
---|
705 | public void skimFile()
|
---|
706 | {
|
---|
707 | boolean file_changed = false;
|
---|
708 |
|
---|
709 | // Parse the metadata.xml file
|
---|
710 | DebugStream.println("Skimming metadata.xml file " + this + "...");
|
---|
711 |
|
---|
712 | Document document = XMLTools.parseXMLFile(this);
|
---|
713 | if (document == null) {
|
---|
714 | System.err.println("Error: Could not parse metadata.xml file " + getAbsolutePath());
|
---|
715 | return;
|
---|
716 | }
|
---|
717 | // Always call this method after calling parseXMLFile
|
---|
718 | reEncodeFilenamesInMetadataXML(document);
|
---|
719 |
|
---|
720 | // Read all the Metadata elements in the file
|
---|
721 | HashMap target_metadata_element_name_attrs_cache = new HashMap();
|
---|
722 | NodeList metadata_elements_nodelist = document.getElementsByTagName(METADATA_ELEMENT);
|
---|
723 | for (int i = 0; i < metadata_elements_nodelist.getLength(); i++) {
|
---|
724 | Element current_metadata_element = (Element) metadata_elements_nodelist.item(i);
|
---|
725 | String metadata_element_name_full = current_metadata_element.getAttribute("name");
|
---|
726 | String metadata_set_namespace = MetadataTools.getMetadataSetNamespace(metadata_element_name_full);
|
---|
727 |
|
---|
728 | // Ignore legacy crap
|
---|
729 | if (metadata_set_namespace.equals("hidden")) {
|
---|
730 | continue;
|
---|
731 | }
|
---|
732 |
|
---|
733 | MetadataSet metadata_set = MetadataSetManager.getMetadataSet(metadata_set_namespace);
|
---|
734 | if (metadata_set == null) {
|
---|
735 | // The metadata set isn't loaded, so give the option of mapping the element into a loaded set
|
---|
736 | String target_metadata_element_name_full = MetadataSetManager.mapUnloadedMetadataElement(metadata_element_name_full);
|
---|
737 | if (target_metadata_element_name_full == null || target_metadata_element_name_full.equals("")) {
|
---|
738 | // Skip this element if we still don't have a loaded element for it
|
---|
739 | continue;
|
---|
740 | }
|
---|
741 |
|
---|
742 | // Update the metadata.xml file to have the new (namespaced) element name
|
---|
743 | // Instead of using current_metadata_element.setAttribute("name", target_metadata_element_name_full)
|
---|
744 | // we create an Attr object for each target metadata element name, and cache them
|
---|
745 | // This makes a *huge* difference (namespacing a metadata.xml file with 45000 metadata entries now
|
---|
746 | // takes 45 seconds instead of 30 minutes!) -- why is setting the value of a Node so slow?
|
---|
747 | Attr target_metadata_element_name_attr = (Attr) target_metadata_element_name_attrs_cache.get(target_metadata_element_name_full);
|
---|
748 | if (target_metadata_element_name_attr == null) {
|
---|
749 | target_metadata_element_name_attr = document.createAttribute("name");
|
---|
750 | target_metadata_element_name_attr.setValue(target_metadata_element_name_full);
|
---|
751 | target_metadata_element_name_attrs_cache.put(target_metadata_element_name_full, target_metadata_element_name_attr);
|
---|
752 | }
|
---|
753 |
|
---|
754 | // Remove the old name attribute and add the new (namespaced) one
|
---|
755 | current_metadata_element.removeAttribute("name");
|
---|
756 | current_metadata_element.setAttributeNode((Attr) target_metadata_element_name_attr.cloneNode(false));
|
---|
757 | file_changed = true;
|
---|
758 |
|
---|
759 | metadata_element_name_full = target_metadata_element_name_full;
|
---|
760 | metadata_set_namespace = MetadataTools.getMetadataSetNamespace(metadata_element_name_full);
|
---|
761 | metadata_set = MetadataSetManager.getMetadataSet(metadata_set_namespace);
|
---|
762 | }
|
---|
763 |
|
---|
764 | String metadata_element_name = MetadataTools.getMetadataElementName(metadata_element_name_full);
|
---|
765 | MetadataElement metadata_element = metadata_set.getMetadataElementWithName(metadata_element_name);
|
---|
766 |
|
---|
767 | // If the element doesn't exist in the metadata set, add it
|
---|
768 | if (metadata_element == null) {
|
---|
769 | metadata_element = metadata_set.addMetadataElementForThisSession(metadata_element_name);
|
---|
770 | }
|
---|
771 |
|
---|
772 | // Square brackets need to be escaped because they are a special character in Greenstone
|
---|
773 | String metadata_value_string = XMLTools.getElementTextValue(current_metadata_element);
|
---|
774 | metadata_value_string = metadata_value_string.replaceAll("[", "[");
|
---|
775 | metadata_value_string = metadata_value_string.replaceAll("]", "]");
|
---|
776 |
|
---|
777 | metadata_element.addMetadataValue(metadata_value_string);
|
---|
778 | }
|
---|
779 |
|
---|
780 | // Rewrite the metadata.xml file if it has changed
|
---|
781 | if (file_changed) {
|
---|
782 | XMLTools.writeXMLFile(this, document);
|
---|
783 | }
|
---|
784 | }
|
---|
785 |
|
---|
786 | /**
|
---|
787 | * The gs.filenameEncoding metadata is unique in that, when added, removed or
|
---|
788 | * replaced, it must be applied on the file(name) whose metadata has been
|
---|
789 | * adjusted.
|
---|
790 | * This method handles all that, given the regular expression or filepath name
|
---|
791 | * to match on (.* matches subdirectories), the affected fileNode, the new
|
---|
792 | * encoding value and whether a new encoding value has been added/an existing
|
---|
793 | * one has been replaced or whether the encoding metadata has been removed.
|
---|
794 | * The new adjusted value for the encoding metadata is returned.
|
---|
795 | *
|
---|
796 | * MetadataXMLFileManager maintains a hashmap of (URL-encoded filepaths, encoding)
|
---|
797 | * to allow fast access to previously assigned gs.filenameEncoding metadata (if
|
---|
798 | * any) for each file. This hashmap also needs to be updated, but this update
|
---|
799 | * is complicated by the fact that it concerns regular expressions that could
|
---|
800 | * affect multiple filenames.
|
---|
801 | */
|
---|
802 | public String processFilenameEncoding(String file_path_regexp, CollectionTreeNode file_node,
|
---|
803 | String encoding_metadata_value, boolean removingMetadata)
|
---|
804 | {
|
---|
805 | if(!FilenameEncoding.MULTIPLE_FILENAME_ENCODINGS_SUPPORTED) {
|
---|
806 | return encoding_metadata_value;
|
---|
807 | }
|
---|
808 |
|
---|
809 | // Work out this filenode's new encoding and apply it:
|
---|
810 |
|
---|
811 | if(removingMetadata) { // encoding_metadata_value = ""
|
---|
812 | // gs.filenameEncoding metadata being removed, work out
|
---|
813 | // any inherited metadata to replace it with in the meta-table
|
---|
814 | encoding_metadata_value = FilenameEncoding.getInheritedFilenameEncoding(
|
---|
815 | file_node.getURLEncodedFilePath(), file_node.getFile());
|
---|
816 | // should be canonical encoding already
|
---|
817 | }
|
---|
818 | else if(!encoding_metadata_value.equals("")) {
|
---|
819 | // if adding or replacing filename encoding,
|
---|
820 | // get the canonical encoding name for this alias
|
---|
821 | encoding_metadata_value = FilenameEncoding.canonicalEncodingName(encoding_metadata_value);
|
---|
822 | }
|
---|
823 | // Reencode the display of this filenode only as any affected
|
---|
824 | // childnodes will be reencoded on FileNode.refreshDescendantEncodings()
|
---|
825 | file_node.reencodeDisplayName(encoding_metadata_value);
|
---|
826 |
|
---|
827 |
|
---|
828 | // Whether removing or adding/replacing the file's gs.filename encoding meta,
|
---|
829 | // store this in the file-to-encoding map for fast access, since the map stores
|
---|
830 | // empty string values when no meta has been assigned at this file level.
|
---|
831 | // In the case of removingMetadata, the value stored will be the fallback value
|
---|
832 |
|
---|
833 | String urlpath = file_node.getURLEncodedFilePath();
|
---|
834 | if(removingMetadata) {
|
---|
835 | // remove it from the map instead of inserting "", so that when folders in the collectiontree
|
---|
836 | // are being deleted or shifted, the removemetada (and addmetadata) calls that get fired
|
---|
837 | // for each affected filenodes does not cause the undesirable effect of multiple "" to be
|
---|
838 | // entered into the filename-to-encoding map for filepaths that no longer exist .
|
---|
839 | FilenameEncoding.map.remove(urlpath);
|
---|
840 | } else { // for adding and replacing, put the encoding into the map (also replaces any existing encoding for it)
|
---|
841 | FilenameEncoding.map.put(urlpath, encoding_metadata_value);
|
---|
842 | }
|
---|
843 |
|
---|
844 | // If new folder-level metadata (or metadata for a set of files fitting a pattern) has been
|
---|
845 | // assigned, the file_to_encodings map will be cleared for all descendant folders and files,
|
---|
846 | // so that these can be re-calculated upon refreshing the visible parts of the CollectionTree.
|
---|
847 | // Mark the state as requiring a refresh of the CollectionTree.
|
---|
848 | // This next step also serves to prevent the MetadataValueTableModel from trying to update
|
---|
849 | // itself while a refresh (involving re-encoding of filenames of visible nodes) is in progress.
|
---|
850 | FilenameEncoding.setRefreshRequired(true);
|
---|
851 |
|
---|
852 | return encoding_metadata_value;
|
---|
853 | }
|
---|
854 | }
|
---|