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Re: Regular expressions [message #22390 is a reply to message #15713]

Fri, 10 November 2000 00:00

Liam E. Gumley
Messages: 378
Registered: January 2000

Senior Member

James Tappin wrote:
>
> Does there exist a routine for regular expression matching in IDL?
>
> I'm thinking of something along the lines of an extended STR_SEP that could
> (say) separate a string into components separated by 0 or 1 commas and an
> arbitrary number of spaces.
>
> I could do it by spawning a perl script but that's not too pretty and I
> can't see an _easy_ way to do it natively.

The STREGEX function was introduced in IDL 5.3:

"The STREGEX function performs regular expression matching against the
strings contained in StringExpression. STREGEX can perform either a
simple boolean True/False evaluation of whether a match occurred, or it
can return the position and offset within the strings for each match.
The regular expressions accepted by this routine, which correspond to
"Posix Extended Regular Expressions", are similar to those used by such
UNIX tools as egrep, lex, awk, and Perl."

Cheers,
Liam.
http://cimss.ssec.wisc.edu/~gumley

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[Message index]

		regular expressions By: Michael Werger on Fri, 04 June 1999 00:00
		Re: Regular expressions By: Brian Jackel on Fri, 10 November 2000 00:00
		Re: Regular expressions By: Martin Schultz on Fri, 10 November 2000 00:00
		Re: Regular expressions By: Liam E. Gumley on Fri, 10 November 2000 00:00
		Re: Regular Expressions By: John-David T. Smith on Thu, 15 March 2001 16:09
		Re: Regular Expressions By: Wayne Landsman on Thu, 15 March 2001 19:24
		Re: Regular Expressions By: John-David T. Smith on Fri, 16 March 2001 09:20
		Re: Regular Expressions By: Pavel A. Romashkin on Mon, 19 March 2001 13:52
		Re: Regular Expressions By: Craig Markwardt on Tue, 20 March 2001 15:23
		Re: Regular Expressions By: John-David T. Smith on Tue, 20 March 2001 15:28
		Re: Regular Expressions By: Mark Hadfield on Tue, 20 March 2001 14:48
		Re: Regular Expressions By: Wayne Landsman on Tue, 20 March 2001 12:14
		Re: Regular Expressions By: Martin Schultz on Tue, 20 March 2001 04:39

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