/**
* Finds the program that is associated with an extension. The extension may or may not begin with
* a '.'. Note that a <code>Display</code> must already exist to guarantee that this method
* returns an appropriate result.
*
* @param extension the program extension
* @return the program or <code>null</code>
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT when extension is null
* </ul>
*/
public static Program findProgram(String extension) {
NSAutoreleasePool pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init();
try {
if (extension == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (extension.length() == 0) return null;
Program program = null;
char[] chars;
if (extension.charAt(0) != '.') {
chars = new char[extension.length()];
extension.getChars(0, chars.length, chars, 0);
} else {
chars = new char[extension.length() - 1];
extension.getChars(1, extension.length(), chars, 0);
}
NSString ext = NSString.stringWithCharacters(chars, chars.length);
if (ext != null) {
byte[] fsRef = new byte[80];
if (OS.LSGetApplicationForInfo(
OS.kLSUnknownType, OS.kLSUnknownCreator, ext.id, OS.kLSRolesAll, fsRef, null)
== OS.noErr) {
long /*int*/ url = OS.CFURLCreateFromFSRef(OS.kCFAllocatorDefault(), fsRef);
if (url != 0) {
NSString bundlePath = new NSURL(url).path();
NSBundle bundle = NSBundle.bundleWithPath(bundlePath);
if (bundle != null) program = getProgram(bundle);
OS.CFRelease(url);
}
}
}
return program;
} finally {
pool.release();
}
}
