[news.eclipse.platform.swt] Mac OS X FileDialog an Special Characters

[Alexander Hofmann <alexhofi@xxxxxxx>]

Hi all,

I didn't find anything out in the net so I'm asking in here (and please 
correct me if the problem is already referred to by someone)...

I have problems concerning the FileDialog and filenames
containing special characters, such as the german Umlaute. When I try to 
open such files the path and filename returned contain false characters 
and some question marks when used as a Java String (eg. with 
System.out.println).

Looking at the sources (I'm refering to SWT 3.4) the code reading the 
Filenames from the OS is (like):

	...
	char [] buff= new char [length];
	OS.CFStringGetCharacters (str, range, buff);
	result = new String (buff);
	...

According to Apple's documentation shipped with xCode, the function 
CFStringGetCharacters will return UTF-8 Chars, with sould be o.k. for 
Java, nevertheless an 'Ä' in a Filename get's an 'A?' in Java.

I'm temporarily using the following Function and replaced the above code 
with a call to it to fix this, but I think I remember it did fork a view 
weeks ago (using an older release ?!).

	public static String CFStringToString(int str) {
		String result = null;
		int length = OS.CFStringGetLength (str);
		CFRange range = new CFRange ();
		range.length = length;
		int[] usedBufLen = { 0 };
		byte[] buffer = new byte[1];
		if (OS.CFStringGetBytes(str, range, OS.kCFStringEncodingMacRoman, 
(byte) 0, false, null, 0, usedBufLen) > 0) {
			int maxLen = usedBufLen[0];
			buffer = new byte[maxLen];
			OS.CFStringGetBytes(str, range, OS.kCFStringEncodingMacRoman, (byte) 
0, false, buffer, maxLen, usedBufLen);
			try {
				result = new String (buffer, "MacRoman");
			}
			catch (Exception e) {
				//None of interest, just mark an Error
				result = null;
			}
		}
		//The above didn't work? Try something else...
		if (result == null) {
			char [] buff= new char [length];
			OS.CFStringGetCharacters (str, range, buff);
			result = new String (buff);
		}
		return result;
	}

Is there a bug in SWT, so that FileDialog cannot work in some 
circumstances, or am I doing something wrong (such as that I would have 
to tell the Java VM to use the right encoding, or converting the 
returned strings first)?

Thanks,
Alexander Hofmann.