Re: Cocoa-dev Digest, Vol 1, Issue 330
Re: Cocoa-dev Digest, Vol 1, Issue 330
- Subject: Re: Cocoa-dev Digest, Vol 1, Issue 330
- From: Joe Chan <email@hidden>
- Date: Fri, 26 Nov 2004 16:16:28 -0500
Um, if I understand your question correctly, you're asking how to use C
functions? You do something like this:
regex_t myRegex;
int err = regcomp(&myRegex, myExpr, REG_EXTENDED);
On Nov 26, 2004, at 3:29 PM, email@hidden wrote:
Date: Fri, 26 Nov 2004 18:44:57 +0000
From: Oliver Cameron <email@hidden>
Subject: Using regex.h
To: email@hidden
Message-ID: <email@hidden>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi guys,
Not sure if my other mail got through to the list, so I'll try again.
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?), so I've really got no idea how to implement it in a Cocoa based
application.
I did a 'man regex' in the Terminal and gave it a read. Seems I have to
do:
#include <regex.h>
I also realised there are 4 functions, but I only need to use 2. I seem
to need to provide regcomp with a regular expression string, it will
then transform that into a internally structured correct one. I then
need to pass that and the string I want to parse into regexec.
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];
Any sort of C method example could help a lot.
I guess I could use NSTask, but I think that could cause major
slowdowns. I also know about the OmniFrameworks and others (MOKit
etc.), but I'd rather cook up my own engine if possible. Any help is
appreciated.
Thanks,
Oliver
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