Re: Implementing NSString getBytes

[Chan Maxthon]

Can you just dump it from -[NSString dataUsingEncoding:] which is way simpler?

发自我的 iPhone

在 2013-6-9，6:06，Luboš Doležel <address@hidden> 写道：

> Hi,
> 
> GNUstep's NSString currently lacks 
> getBytes:maxLength:usedLength:encoding:options:range:remainingRange:
> 
> (added in OS X 10.5).
> 
> I wanted to implement this function, but GSFromUnicode()'s behavior is not 
> the best fit for this method:
> 
> 1) it fails if the output buffer is too small - we don't want that in this 
> case
> 2) it doesn't tell you how many input characters were converted (which is 
> understandable because of 1)
> 
> So I decided to use iconv() directly, which has a pitfall. I'd need to access 
> static members (EntrySupported) of Unicode.m to know the iconv encoding's 
> name etc. So I guess the iconv-related code (as attached) should be moved 
> into Unicode.m.
> 
> ===============
> 
> So I have a question: is it OK to write a function with declaration:
> 
> BOOL GSFromUnicodePartial(NSStringEncoding enc, int options, unichar **inbuf, 
> size_t *inbytesleft, char **outbuf, size_t *outbytesleft);
> 
> that wouldn't suffer from 1) and 2) and add it into 
> Source/Additions/Unicode.m next to GSFromUnicode()?
> 
> -- 
> Luboš Doležel
> <getBytes.patch>
> _______________________________________________
> Gnustep-dev mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/gnustep-dev