public NSSet<E> setByUnioningSet(NSSet<? extends E> otherSet) {
NSMutableSet<E> set = new NSMutableSet<E>(this);
set.unionSet(otherSet);
return set;
}
public NSSet<E> setByIntersectingSet(NSSet<?> otherSet) {
NSMutableSet<E> set = new NSMutableSet<E>(this);
set.intersectSet(otherSet);
return set;
}
public NSSet<E> setBySubtractingSet(NSSet<?> otherSet) {
NSMutableSet<E> set = new NSMutableSet<E>(this);
set.subtractSet(otherSet);
return set;
}
/**
* Answer all program extensions in the operating system. Note that a <code>Display</code> must
* already exist to guarantee that this method returns an appropriate result.
*
* @return an array of extensions
*/
public static String[] getExtensions() {
NSAutoreleasePool pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init();
try {
NSMutableSet supportedDocumentTypes = (NSMutableSet) NSMutableSet.set();
NSWorkspace workspace = NSWorkspace.sharedWorkspace();
NSString CFBundleDocumentTypes = NSString.stringWith("CFBundleDocumentTypes");
NSString CFBundleTypeExtensions = NSString.stringWith("CFBundleTypeExtensions");
NSArray array =
new NSArray(
OS.NSSearchPathForDirectoriesInDomains(
OS.NSAllApplicationsDirectory, OS.NSAllDomainsMask, true));
int count = (int) /*64*/ array.count();
for (int i = 0; i < count; i++) {
NSString path = new NSString(array.objectAtIndex(i));
NSFileManager fileManager = NSFileManager.defaultManager();
NSDirectoryEnumerator enumerator = fileManager.enumeratorAtPath(path);
if (enumerator != null) {
id id;
while ((id = enumerator.nextObject()) != null) {
enumerator.skipDescendents();
NSString filePath = new NSString(id.id);
NSString fullPath = path.stringByAppendingPathComponent(filePath);
if (workspace.isFilePackageAtPath(fullPath)) {
NSBundle bundle = NSBundle.bundleWithPath(fullPath);
id =
bundle != null
? bundle.infoDictionary().objectForKey(CFBundleDocumentTypes)
: null;
if (id != null) {
NSDictionary documentTypes = new NSDictionary(id.id);
NSEnumerator documentTypesEnumerator = documentTypes.objectEnumerator();
while ((id = documentTypesEnumerator.nextObject()) != null) {
NSDictionary documentType = new NSDictionary(id.id);
id = documentType.objectForKey(CFBundleTypeExtensions);
if (id != null) {
supportedDocumentTypes.addObjectsFromArray(new NSArray(id.id));
}
}
}
}
}
}
}
int i = 0;
String[] exts = new String[(int) /*64*/ supportedDocumentTypes.count()];
NSEnumerator enumerator = supportedDocumentTypes.objectEnumerator();
id id;
while ((id = enumerator.nextObject()) != null) {
String ext = new NSString(id.id).getString();
if (!ext.equals("*")) exts[i++] = "." + ext;
}
if (i != exts.length) {
String[] temp = new String[i];
System.arraycopy(exts, 0, temp, 0, i);
exts = temp;
}
return exts;
} finally {
pool.release();
}
}