Re: Using regex.h

FROM : Andrew Farmer
DATE : Fri Nov 26 23:07:15 2004

On 26 Nov 2004, at 10:44, Oliver Cameron wrote:
> Not sure if my other mail got through to the list, so I'll try again.


It did.

> I've been told I can use regex.h for powering the regular expression 
> searches in my app. I'm never actually touched pure C code (is regex.h 
> C?),


Yup.

> so I've really got no idea how to implement it in a Cocoa based 
> application...
>
> I understand all the theory work, but I'm still at a lost as to how to 
> use these functions, for example, in Obj-C, I would do something like:
>
> NSString *hello = [regex parseString:@"hello" 
> withExpression:expression];


Nope. C functions use C strings. There are no ObjC calls involved here, 
just function calls.

See here for a pure-C example:
> http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/
> genprogc/internationalized_reg_expression_subr.htm


and remember that + (NSString) stringWithCString; and - (NSString) 
cString; are your friends.