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Re: [xsl] Getting text and non-block nodes before any block nodes

Subject: Re: [xsl] Getting text and non-block nodes before any block nodes
From: "Eliot Kimber ekimber@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 15 Sep 2014 13:30:54 -0000

Clearly I need to do a closer reading of the XPATH 2 spec (or maybe buy
*and read* Mike Kay's book). How did I not know about the "<<"
(node-before) and ">>" (node-after) operators?


Eliot Kimber, Owner
Contrext, LLC

On 9/12/14, 7:09 PM, "G. Ken Holman g.ken.holman@xxxxxxxxx"
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

>At 2014-09-12 21:50 +0000, Eliot Kimber ekimber@xxxxxxxxxxxx wrote:
>>I think this is an FAQ but my situation may be slightly different. In any
>>case, if it's an FAQ, maybe my asking it will help.
>>This is in a DITA context, where I can know for any element whether it is
>>a block or not a block (because in DITA all elements have a base type
>>is inherently block or not block).
>>I have the situation where a wrapper element may contain any combination
>>of text, non-block elements, or block elements.
>>I need to find either all the nodes up to the first block or determine
>>that there are none and get the first block.
>I think this will work:
>   select="node()[. &lt;&lt; current()/*[lc:isBlock(.)][1]"
>But it is XSLT 2.0 only.
>For XSLT 1.0 I might do something like:
>   select="node()[generate-id(following-sibling::*[lc:isBlock(.)][1]) =
>                  generate-id(current()/*[lc:isBlock(.)][1])]"/>
>>Where the lc:isBlock() function returns true if the element provided is a
>>DITA block element.
>>This seems to pass all my tests but I'm wondering if there's a better way
>>to make this check?
>>I also realized that I can use the $textBeforeBlocks variable to then
>>process any remaining blocks (because I will have already output the text
>>before blocks):
>><xsl:when test="$hasTextBeforeBlocks">
>>   <xsl:apply-templates select="node() except($textBeforeBlocks)"/>
>>         </xsl:when>
>That includes the block element ... you might try using ">>" in a way
>similar to how I used "<<" above if you didn't want to include the
>block element itself.
>I hope this helps!
>. . . . . . Ken
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