It depends a bit on the detail I think. In general I would go for

<xsl:choose>
<xsl:when test="matches(., regex1)">...
<xsl:when test="matches(., regex2)">... 
<xsl:otherwise>...

But there may be cases where using xsl:non-matching-substring works better.

Michael Kay
http://www.saxonica.com/



> -----Original Message-----
> From: Pawson, David [mailto:David.Pawson@xxxxxxxxxxx] 
> Sent: 04 October 2004 09:39
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  xslt 2, design patterns
> 
> I'm beginning to use xslt 2.0 more and more for 
> 'uptransforms' as Omnimark call them,
> i.e. getting some regular text into xml.
> 
> My general pattern has been
> tokenise ($input, 'chunk-separator')
>   analyze-string(.,'regex')
>     matching-substring
>         process regex-group(n)
>     non-matching-substring
> 
> 
> perl has a pattern of repeated matching on the input
> 
>  while more input {
>     if (match . regex) { process match}
>     if (match . regex) {process match}
>     else {otherwise clause}
> }
> 
> I.e. the series of if statements is tried successively, until
> there is a match or all fail.
> 
> I find this very useful as a pattern. 
> 
> Is it possible to emulate this in xslt 2.0?
> using the non-matching-substring to nest analyze-string statements
> seems rather laboured?
> 
> Any advice please?
> 
> 
> 
> 
> 
> Regards DaveP.
> 
> **** snip here *****
> 
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