Re: Re: Regex confusion


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Re: Re: Regex confusion

by neilwatson (Priest)

on Aug 07, 2002 at 16:54 UTC ( [id://188386]=note: print w/replies, xml )

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in reply to Re: Regex confusion
in thread Regex confusion

So let's step back one square: what kinds of things are you trying to match?

Trying to match: client.project.subproject where:

Client and project are manditory. Subproject is optional but, there could be more than one.
Client, project and subproject could contain, letters, numbers, _, -, or \&

Does that help?

Update:Actually your regex /([^.]+)\.(\S+)/ works well. Thank you.

Neil Watson
watson-wilson.ca

Comment on Re: Re: Regex confusion Download Code

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Re:^3: Regex confusion by flounder99 (Friar) on Aug 07, 2002 at 17:22 UTC
OK, to match those possible characters (and only those) try something like `m/((?:\w\|\\\&\|\-))\.((?:\w\|\\\&\|\-))/` [download] the \w takes care of letters, numbers and _. I always escape the - out of habit but is unnecessary. The /i is redundant since the \w is case insensitive. Personally I would do a nongreedy match. It will match other characters but it probably won't matter. Something like: `m/(.?)\.(.)/` [download] update -- of course a simple split would do the trick. `my ($client, $project, $subproject) = split /\./, $x;` [download] -- flounder	[reply] [d/l] [select]
Re: Re:^3: Regex confusion by neilwatson (Priest) on Aug 07, 2002 at 18:08 UTC
update -- of course a simple split would do the trick. Neil bangs his head vigourously against his desk. Of course! Why the hell didn't I think of that before? Thank you all for your input. Neil Watson watson-wilson.ca	[reply]
Re: Re: Re: Regex confusion by graff (Chancellor) on Aug 07, 2002 at 17:39 UTC
Arturo is right -- I don't see how anything is getting assigned to $project, since the match does not succeed at all for the initial example. Trying to match: client.project.subproject where: Client and project are manditory. Subproject is optional but, there could be more than one. Client, project and subproject could contain, letters, numbers, _, -, or \& Update:Actually your regex ... works well. Thank you. Arturo's regex will include both your project and all sub-projects in $2. If that's okay, fine. If not, do it like this: `/([^.]+)\.([^.]+)/` [download]	[reply] [d/l]

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