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Re: [xsl] [XSL] extracting a verse

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David,

At 07:57 PM 12/18/2002, you wrote:

I missed the start of this thread but is d-o-e acceptable?

It is, if you allow that you're making the XSLT processor drive a fancy string-writing routine (here based on a tree walk), rather than doing a "proper" tree transformation.

As you know better than anyone, David. :->

Whether the original poster (was it Michael?) can solve his problem by generating strings with a serializer, I can't say. (There are those, I hear, who believe a mere string can hardly amount to XML, and shouldn't be allowed to be processed by a computer at least unescorted).

I note also the transformation has to know the element type of the outermost wrapper, here <quote>...</quote> (though I suppose this could be handled in other ways too).

It *is* an ingenious approach (and requires a breakthrough, as I expected), and (I have no doubt) will be often resorted to (with its variations). It may even be a second reasonable use of d-o-e.

The next thing wanted will be some alignment, so that successive <seg> elements, say, keep track of which other segs they belong to. I suppose you do this by faking an attribute that points to the parent, as in

<xsl:template match="*">
  <xsl:copy>
    <xsl:attribute name="id">
      <xsl:value-of select="generate-id()"/>
    </xsl:attribute>
    <xsl:apply-templates/>
  </xsl:copy>
</xsl:template>

<xsl:template match="verse">
  <xsl:text disable-output-escaping="yes">&lt;verse></xsl:text>
  <xsl:for-each select="ancestor::*[ancestor::quote]">
    <xsl:text disable-output-escaping="yes">&lt;</xsl:text>
    <xsl:value-of select="name()"/>
    <xsl:text disable-output-escaping="yes"> align="</xsl:text>
    <xsl:value-of select="generate-id(..)"/>
    <xsl:text disable-output-escaping="yes">"></xsl:text>
  </xsl:for-each>
</xsl:template>

<xsl:template match="endVerse">... as you have it ...</xsl:template>

Admiringly,
Wendell

If so it seems fairly easy, something like

...

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version="1.0">

<xsl:output method="xml"/>

<xsl:template match="*">
<xsl:copy>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>

<xsl:template match="verse">
<xsl:text disable-output-escaping="yes">&lt;verse></xsl:text>
<xsl:for-each select="ancestor::*[ancestor::quote]">
<xsl:text disable-output-escaping="yes">&lt;</xsl:text>
<xsl:value-of select="name()"/>
<xsl:text disable-output-escaping="yes">></xsl:text>
</xsl:for-each>
</xsl:template>

<xsl:template match="endVerse">
<xsl:for-each select="ancestor::*[ancestor::quote]">
<xsl:sort select="-count(ancestor::*)" data-type="number"/>
<xsl:text disable-output-escaping="yes">&lt;/</xsl:text>
<xsl:value-of select="name()"/>
<xsl:text disable-output-escaping="yes">></xsl:text>
</xsl:for-each>
<xsl:text disable-output-escaping="yes">&lt;/verse></xsl:text>
</xsl:template>

</xsl:stylesheet>

David

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