Re: NSString Parsing
Re: NSString Parsing
- Subject: Re: NSString Parsing
- From: "John C. Randolph" <email@hidden>
- Date: Tue, 29 Oct 2002 12:50:42 -0800
There is of course, Mike Ferris's MOKit, which includes the MORegex
class.
-jcr
On Tuesday, October 29, 2002, at 09:48 AM, mike wrote:
On Tue, 29 Oct 2002, Chris Parker wrote:
On Tuesday, October 29, 2002, at 12:32 AM, Simon Stapleton wrote:
From: Peer Allan <email@hidden>
What I want to do is extract all the text from in between a pair or
tags
(<td>...</td> for example). I know I could use a rangeOfString:
call
to get
the first one, but then I have to create a new string with the
remaining
data and call rangeOfString: again to get the next and on and on
until the
whole string is parsed. I hope there is a better way to do this.
This is a problem I've had to deal with a couple of times (NOT in the
realm of Cocoa) and the best solution I could come up with was to use
regular expressions. I'm not sure if any C/Obj-C regex packages exist
but
you could interface with a perl script. Perl's set of regular
expressions
are second-to-none. Extracting the data from between <td> tags can be
done in literally one line:
...
print $1 if m!<TD.*?>(.*?)</TD>!i;
...
Of course, the next problem is how to call the perl routine. The
easiest
way would be to write a stand-alone script and use an intermediate
file or
do a fork/exec/pipe. If you don't want the overhead of spawning a new
process, perl is embeddable into C (and presumably Obj-C, since it is a
true superset of C) but that could get really hairy really quickly.
Sorry if this if off-topic.
-mike
----
michael a. ericson
www.unm.edu/~maerics
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John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
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