/*
* Removes unused indexes from disk.
*/
public void cleanUpIndexes() {
SimpleSet knownPaths = new SimpleSet();
IRubySearchScope scope = BasicSearchEngine.createWorkspaceScope();
PatternSearchJob job =
new PatternSearchJob(null, BasicSearchEngine.getDefaultSearchParticipant(), scope, null);
Index[] selectedIndexes = job.getIndexes(null);
for (int i = 0, l = selectedIndexes.length; i < l; i++) {
String path = selectedIndexes[i].getIndexFile().getAbsolutePath();
knownPaths.add(path);
}
if (this.indexStates != null) {
Object[] keys = this.indexStates.keyTable;
IPath[] locations = new IPath[this.indexStates.elementSize];
int count = 0;
for (int i = 0, l = keys.length; i < l; i++) {
IPath key = (IPath) keys[i];
if (key != null && !knownPaths.includes(key.toOSString())) locations[count++] = key;
}
if (count > 0) removeIndexesState(locations);
}
deleteIndexFiles(knownPaths);
}
private void deleteIndexFiles(SimpleSet pathsToKeep) {
File[] indexesFiles = getSavedIndexesDirectory().listFiles();
if (indexesFiles == null) return;
for (int i = 0, l = indexesFiles.length; i < l; i++) {
String fileName = indexesFiles[i].getAbsolutePath();
if (pathsToKeep != null && pathsToKeep.includes(fileName)) continue;
String suffix = ".index"; // $NON-NLS-1$
if (fileName.regionMatches(
true, fileName.length() - suffix.length(), suffix, 0, suffix.length())) {
if (VERBOSE) Util.verbose("Deleting index file " + indexesFiles[i]); // $NON-NLS-1$
indexesFiles[i].delete();
}
}
}