[XML4Lib] difficulty with following-sibling axis in XSLT

[Peter Binkley]

Something like this would do it:

<xsl:template match="span[@class='title']">
    <xsl:variable name="this" select="."/>
    <xsl:variable name="infos" select="../span[@class='info'][count($this |
preceding-sibling::span[@class='title'][1]) = 1]"/>
    <xsl:value-of select="count($infos)"/>
</xsl:template>

For each title span, the $infos variable selects those info spans for whom
the first preceding title span and the title span of interest ("$this") are
one and the same. 

Peter

On 2008/05/26 8:58 AM, "jfitzgibbon at galwaylibrary.ie"
<jfitzgibbon at galwaylibrary.ie> wrote:

> Hi,
> 
> I have an XML file which I saved from a HTML file and it has the following
> structure.
> 
> <library>
> <span class="title">Wuthering Heights</span>
> <span class="info">paperback</span>
> <span class="info">unavailable</span>
> <span class="title">Tom Sawyer</span>
> <span class="info">Audio Book</span>
> <span class="info">Available</span>
> <span class="info">Unabridged</span>
> </library>
> 
> The problem is that all span tags with an attribute of info are siblings
> of each other and I have no way of knowing how many span tags with a class
> of info occur after each title. For example, if I try to access all the
> information about 'Wuthering Heights' and only 'Wuthering Heights' I am
> running into problems.
> 
> For example, if I try
> 
> <xsl:template match="library/span[@class='title' and .='Wuthering
> Heights']">
> <xsl:for-each select="following-sibling::span[@class='info']">
> <p>
> <xsl:value-of select="."/>
> </p>
> </xsl:for-each>
> </xsl:template>
> 
> I will retrieve all information on all books and not just the information
> on "Wuthering Heights".
> 
> I get
> 
> <p>paperback</p>
> <p>unavailable</p>
> <p>Audio Book</p>
> <p>Available</p>
> <p>Unabridged</p>
> 
> How do I limit my results to those span elements containing information on
> "Wuthering Heights"?
> 
> This is a problem which I encounter frequently when I convert a HTML
> document to XML.
> 
> I would appreciate any advice.
> 
> Regards
> John
> 
> 
> 
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