Subject: [xsl] Regular expression to exclude files From: "Eliot Kimber eliot.kimber@xxxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Thu, 16 Feb 2023 20:30:32 -0000 |
Im using Saxons collection() extension that lets you specify a regular expression to select files within a directory. These are XPath regular expressions so my question is I think a general XPath question. I want to match all files with a given extension except those that start with foo or bar. I think the Perl expression would be something like: .*?!(foo|bar).+.ditamap Using this little XQuery: let $strings as xs:string* := ('bundle-aaaa.ditamap', 'publication_pub-one.ditamap', 'not-pub-or-bundle.ditamap', 'atopic.dita') return count($strings[matches(., '.?!(bundle-|publication_).+\.ditamap')]) I get zero results, while this: let $strings as xs:string* := ('bundle-aaaa.ditamap', 'publication_pub-one.ditamap', 'not-pub-or-bundle.ditamap', 'atopic.dita') return count($strings[matches(., '.+\.ditamap')] Returns the expected 3 Reading the XSD regular expression spec I did not see an obvious way to specify this kind of negative match but I also find the XSD specification to be almost impenetrably difficult to decode. Is there a way to do this with regular expressions alone? I want a pure regex solution because Im using it in the context of an Oxygen xpath_eval() call so its not easy (but not impossible) to filter the files returned by the collection() call (Im using the metadata=yes form since I want the file names, not the parsed docs in this context). Thanks, E. _____________________________________________ Eliot Kimber Sr Staff Content Engineer O: 512 554 9368 M: 512 554 9368 servicenow.com<https://www.servicenow.com> LinkedIn<https://www.linkedin.com/company/servicenow> | Twitter<https://twitter.com/servicenow> | YouTube<https://www.youtube.com/user/servicenowinc> | Facebook<https://www.facebook.com/servicenow>
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