Re: Re: efficiently extracting a capture group from a

Hi Gerrit, Graydon,

Thanks for having a look!

The tricky part is, I need an empty sequence if the input string does not comply with pattern. replace() returns the original string for a non-match. I could address that with a prefilter:

B replace($file[matches(., '/my-(\w+)\.xml$')], '^.+/my-(\w+)\.xml$', '$1')

but I don't like duplicating patterns because they can accidentally become desynchronized. (If anyone suggests an ENTITY as a solution here, please see me after class.)

Graydon, I need your solution for obtaining the file basename elsewhere in my stylesheet -- thank you!! -- but I run into the prefilter double-pattern issue whether I replace()the full path or just the basename.

And although this example processes a filename, I'd like to find best generalized way to obtain a capture group (or nothing) for any match scenario. In perl, I can assign a variable to the result of a regex match:

B my $file = 'path/my-sometype.xml';

B my ($type) = ($file =~ m{my-(\w+)});

and I was hoping for something similar in XQuery.

Thank you everyone! It's nice to be able to group-think through this.

- Chris

XSL-List info and archive <https://urldefense.com/v3/__http:/www.mulberrytech.com/xsl/xsl-list__;!!A4F2R9G_pg!YXd556WaLkP4pGQ6edPoLq22GVZWXz0FWKC8B6fG3pWIEv49hMn2JEHevovei-DY16w5mb_F-bFG4sPyBrcYYJwk3mBc3dJ69yblgscpjoSpFqlrlsgk$>


EasyUnsubscribe <https://urldefense.com/v3/__http:/lists.mulberrytech.com/unsub/xsl-list/3380743__;!!A4F2R9G_pg!YXd556WaLkP4pGQ6edPoLq22GVZWXz0FWKC8B6fG3pWIEv49hMn2JEHevovei-DY16w5mb_F-bFG4sPyBrcYYJwk3mBc3dJ69yblgscpjoSpFguJxHbP$> (by email)

XSL-List info and archive <http://www.mulberrytech.com/xsl/xsl-list>
EasyUnsubscribe <http://lists.mulberrytech.com/unsub/xsl-list/225679> (by email <>)

--
Gerrit Imsieke
GeschC$ftsfC<hrer / Managing Director
le-tex publishing services GmbH
Weissenfelser Str. 84, 04229 Leipzig, Germany
Phone +49 341 355356 110, Fax +49 341 355356 510
gerrit.imsieke@xxxxxxxxx, http://www.le-tex.de

Registergericht / Commercial Register: Amtsgericht Leipzig
Registernummer / Registration Number: HRB 24930

GeschC$ftsfC<hrer / Managing Directors:
Gerrit Imsieke, Svea Jelonek, Thomas Schmidt