Subject: RE: [xsl] checking sequence inside processing-instruction From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Thu, 3 Jul 2008 10:15:15 +0100 |
> <?page 5?> > <?page 6?> > <?page 8?> > > The style sheet should tell <?page 8?> is out of sequence. > Assuming you are applying templates to processing instructions: <xsl:template match="processing-instruction('page')"> <xsl:if test="preceding::processing-instruction('page')[1][number(.) >= number(current())]"> <xsl:message>error</xsl:message> </xsl:if> </xsl:template> (The call to number() isn't needed in XSLT 1.0. It is needed in 2.0, because otherwise the values will be compared as strings. The condition will always be false if the value is non-numeric, you might want a different error message for that case. The predicate [1] is for performance reasons only.) Michael Kay http://www.saxonica.com/
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