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Posted by Schluppy on 01/25/07 06:28
On Wed, 24 Jan 2007 20:19:51 -0800, Tom wrote:
> A puzzle for you regular expression wizards out there.
>
> Looking for a regex that will split up a string like the following on
> any pipe (|) not inside brackets:
>
> a b | a { b |{c | cd}} d | a b c
>
> Correct result would be:
>
> array ( [0] => 'a b', [1] => 'a { b |{c | cd}} d', [2] => 'a b c')
>
> I've found a couple that get close, but nothing that quite does what
> I'd like.
>
> (Or is this better handled without regex?)
>
> Thanks,
> Tom
The following appear to work, at least with your example and a couple of
alternatives:
/(?:\s\|\s)(?![\w\s\{]*\})/
Matches a space a pipe and a space NOT followed by zero or more word,
space, or left brace characters and one right brace.
Results in:
Array
(
[0] => a b
[1] => a { b |{c | cd}} d
[2] => a b c
)
YMMV of course. I imagine it's likely to break on more complex strings.
--
Schluppy
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