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Re: stregex fails to match underscore [message #88230 is a reply to message #88228]

Mon, 31 March 2014 13:26

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 3/31/14, 2:12 PM, Paul Mallas wrote:
> I am trying to use stregex to match a filename. I am curious why, after the
> '([LLC|KGD|GFC|FFC])' portion of my search string, the first '_' does not match.
>
> For example:
>
> name = 'GDP1_XXX__KGD_RF.xml'
> searchStr = '^G[DS]P1_XXX__([LLC|KGD|GFC|FFC])'
> print, stregex(name, searchStr, /boolean) ; Match
>
> searchStr = '^G[DS]P1_XXX__([LLC|KGD|GFC|FFC])_'
> print, stregex(name, searchStr, /boolean) ; Not Match
>
> Not sure why this happens. Anyone have any ideas?
>
> Thanks.
>

You want just alternation (parens), no character classes (square
brackets) in the LLC|KGD|GFC|FFC choice:

IDL> searchStr = '^G[DS]P1_XXX__(LLC|KGD|GFC|FFC)_'
IDL> print, stregex(name, searchStr, /boolean) ; Not Match
1

Mike
--
Michael Galloy
www.michaelgalloy.com
Modern IDL: A Guide to IDL Programming (http://modernidl.idldev.com)
Research Mathematician
Tech-X Corporation

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[Message index]

		stregex fails to match underscore By: PMan on Mon, 31 March 2014 13:12
		Re: stregex fails to match underscore By: Lajos Foldy on Mon, 31 March 2014 13:23
		Re: stregex fails to match underscore By: Michael Galloy on Mon, 31 March 2014 13:26
		Re: stregex fails to match underscore By: PMan on Mon, 31 March 2014 13:34

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