Re: Adding spaces to an NSString
Re: Adding spaces to an NSString
- Subject: Re: Adding spaces to an NSString
- From: "stephen joseph butler" <email@hidden>
- Date: Tue, 18 Mar 2008 23:18:25 -0500
On Tue, Mar 18, 2008 at 11:10 PM, stephen joseph butler <
email@hidden> wrote:
> Yes; there's not a good, easy way to do this. One implementation that at
> first seems correct is this:
>
> from = [NSMutableString string];
> for (int i = 0; i < [to length]; ++i)
> [from appendFormat:@"%C ", [from characterAtIndex:i]];
>
> That is, until you realize that unichar is 16 bit, and some "characters"
> are encoded as two unichar's. Opps! A better implementation, relying on the
> fact that NSString is UTF16 (I don't think endianess would matter here),
> would do this:
>
> from = [NSMutableString string];
> for (int i = 0; i < [to length]; ++i) {
> unichar c = [from characterAtIndex:i];
>
> if ((c >= 0xD800) && (c <= 0xDBFF))
> [from appendFormat:@"%C", c];
> else
> [from appendFormat:@"%C ", c];
> }
>
Wow. I am more tired that I thought. Please use the right variable instead
of my horribly confusing "from" and "to". I hope you get the point anyway :)
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