Re: [relax-ng-comment] Regular expressions?

["G. Ken Holman" <gkholman@CraneSoftwrights.com>]

At 2002-02-10 14:56 -0600, J. David Eisenberg wrote:
>I need to know how to specify a regular expression as a datatype for an
>element content or attribute value.

See below for an example using the non-XML syntax.

>I'll be using jing as a validator,
>and it appears to have a regex parser in it.

I don't think jing does yet ... I've been successfully using MSV in my XML 
modelling course material to demonstrate the support of patterns.  I'm 
*very* impressed with MSV.

>(I also need this to validate an XML data file that I maintain; one of its
>attribute values must be built from the letters KCJOW - in that order; the
>Perl pattern would be m/K?C?J?O?W?/)

I hope the example below helps.

.................... Ken

T:\ftemp>type david.rnx
datatypes x = "http://www.w3.org/2001/XMLSchema-datatypes"

start = element test {
               x:string { pattern = "K?C?J?O?W?" }
  }

T:\ftemp>type david.xml
<?xml version="1.0" encoding="iso-8859-1"?>
<test>KCJW</test>
T:\ftemp>type david2.xml
<?xml version="1.0" encoding="iso-8859-1"?>
<test>KJCW</test>
T:\ftemp>rngnx david.rnx  1>david.rng

T:\ftemp>call msv david.rng david.xml

T:\ftemp>call msv david.rng david2.xml
start parsing a grammar.
validating david2.xml
Error at line:2, column:18 of file:/T:/ftemp/david2.xml
   the value does not match the regular expression "K?C?J?O?W?".

the document is NOT valid.

T:\ftemp>


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