Re: Working with 32-bit Unicode (NSString stringWithUTF32String: (const UTF32Char *) bytes needed)
Re: Working with 32-bit Unicode (NSString stringWithUTF32String: (const UTF32Char *) bytes needed)
- Subject: Re: Working with 32-bit Unicode (NSString stringWithUTF32String: (const UTF32Char *) bytes needed)
- From: Aki Inoue <email@hidden>
- Date: Mon, 6 Jan 2003 12:55:09 -0800
Andrew,
As Doug mentioned here, you can access the whole 32 bit Unicode space
via surrogates.
And we have no plan to change the fundamental concept that
NSString/CFString is a wrapper for UTF-16 character array.
We're considering to add direct mapping between UTF-32 bytes to
NSString/CFString in the future.
Aki
On 2003.1.6, at 09:44 AM, Douglas Davidson wrote:
On Sunday, January 5, 2003, at 11:50 AM, Andrew Thompson wrote:
I applaud the addition of Unicode 3.2 support in the 10.2 Foundation
release.
NSCharacterSet 's longCharacterIsMember: (UTF32Char) is a great
foundation for starting to explore the higher unicode planes.
(http://www.unicode.org/glossary/#plane).
While a good start, I'm wondering if its possible to work with 32-bit
Unicode in NSStrings. There don't seem to be any 32bit methods on
NSString (everything is UTF8, unichar (16-bit) or char (8 bit)) based.
I imagine re-engineering the whole text system, including
NSLayoutManager et al. to handle 32 bit strings is a very large job,
but I am wondering if there is a way to work with 32 bit string data
today that I've missed?
We use UTF-16, so you can just use surrogate pairs. NSLayoutManager et
al. understand them. I'm not sure if we have anything public for
bulk-converting 32-bit data, though.
By the way, if you're interested in exploring, try the character
palette. You can use it to locate non-BMP characters like
p p "p $p 0p 5p p and
enter them in your text.
Douglas Davidson
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