RE: [xsl] using substring-functions more than once in a node?

[Wendell Piez <wapiez at mulberrytech dot com>]

Mario--

Of course, if your footnotes appeared as markup (e.g. <fn> elements) this 
would be *so* much easier.

In effect, you're having to use XSLT to parse your own custom markup. Hence 
the recursive template in David's solution.

You might consider a pre-pass over the data before you use XSLT on it, 
changing, for example, the regular expression (I use a syntax my text 
editor knows) "(FN \([0-9]+\))" to "<FN no="\1"/> so you have <FN no="99"/> 
in your data instead of (FN 99). The transform would then be trivial.

Cheers,
Wendell

At 01:47 PM 3/26/2002, David McNally wrote:
>Hi.
>
>You can define a template that matches a footnote, and calls itself
>recursively so that it gets them all.  Something like this (untested):
>
><xsl:template name="doFootnotes">
>         <xsl:param name="string"/>
>         <xsl:choose>
>                 <xsl:when test="contains($string,'(FN ')">
>
>                         <xsl:variable name="before">
>                                 <xsl:value-of
>select="substring-before($string,'(FN ')"/>
>                         </xsl:variable>
>                         <xsl:variable name="number">
>                                 <xsl:value-of
>select="substring(substring-after($string,'(FN '),1,1)"/>
>                         </xsl:variable>
>                         <xsl:variable name="after">
>                                 <xsl:value-of
>select="substring(substring-after($string,'(FN '),2)"/>
>                         </xsl:variable>
>
>                         <xsl:value-of select="$before"/>
>                         <xsl:text>(FN </xsl:text>
>                         <a>
>                                 <xsl:attribute name="href">
>                                         <xsl:text>#FN_target_</xsl:text>
>                                         <xsl:value-of select="$number"/>
>                                 </xsl:attribute>
>                                 <xsl:value-of select="$number"/>
>                         </a>
>                         <xsl:call-template name="doFootnotes">
>                                 <xsl:with-param name="string"
>select="$after"/>
>                         </xsl:call-template>
>                 </xsl:when>
>                 <xsl:otherwise>
>                         <xsl:value-of select="$string"/>
>                 </xsl:otherwise>
>         </xsl:choose>
></xsl:template>
>
>You would then call it somthing like this:
>
><xsl:template match="para">
>         <xsl:call-template name="doFootnotes">
>                 <xsl:with-param name="string" select="."/>
>         </xsl:call-template>
></xsl:template>
>
>This template only works because you say the footnote numbers are only one
>digit - if you reached footnote 10, you'd need something cleverer....
>
>Hope this helps,
>David.


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Wendell Piez                            mailto:wapiez@mulberrytech.com
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