Subject: Re: enclosing consecutive XHTML heading elements into <hgroup />, etc.
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxx>
Date: Thu, 12 Sep 2013 13:26:35 -0400
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Ivan,
This is much much easier in XSLT 2.0 using xsl:for-each-group. In this
case, I'd consider and test @group-starting-with="a | aa".
All by itself this capability is sufficient reason to use XSLT 2.0
whenever possible. I hope this option is available to you.
Cheers, Wendell
Wendell Piez | http://www.wendellpiez.com
XML | XSLT | electronic publishing
Eat Your Vegetables
_____oo_________o_o___ooooo____ooooooo_^
On Wed, Sep 11, 2013 at 5:18 AM, Ivan Shmakov <oneingray@xxxxxxxxx> wrote:
> Long story short: the input XML has spans of elements which are
> to be enclosed within elements of some other kind, as in:
>
> <!-- Input -->
> <doc>
> <a /><a /><b /><b />
> <foo>
> <a /><b /><b />
> <aa /><a /><b />
> </foo>
> </doc>
>
> <!-- Output -->
> <doc>
> <enclosing>
> <a /><a /><b /><b />
> <foo>
> <enclosing><a /><b /><b /></enclosing>
> <enclosing><aa /><a /><b /></enclosing>
> </foo>
> </enclosing>
> </doc>
>
> Is there a simple way to do that, given that the set of the
> elements which can start such a span is finite (<a /> and <aa />
> in the example above), but they can otherwise occur anywhere?
> FWIW, Ibm constrained to XSLT 1.0.
>
> The overall task is to introduce <article />, <section />,
> <header />, and <hgroup /> elements, as per the following
> example.
>
> Input:
>
> <?xml version="1.0"?>
> <html xmlns="http://www.w3.org/1999/xhtml">
> <head><title>Hello, world!</title></head>
> <body>
> <h3>The well-known</h3>
> <h1>Hello, world!</h1>
> <h2>program</h2>
>
> <p>Here we discuss the generalsb&</p>
>
> <h2>J. R. Hackerbs implementation</h2>
>
> <p>And here are the particularsb&</p>
> </body>
> </html>
>
> Expected output:
>
> <?xml version="1.0"?>
> <html xmlns="http://www.w3.org/1999/xhtml">
> <head><title>Hello, world!</title></head>
> <body>
> <article>
> <header>
> <hgroup>
> <h3>The well-known</h3>
> <h1>Hello, world!</h1>
> <h2>program</h2>
> </hgroup>
> </header>
>
> <p>Here we discuss the generalsb&</p>
>
> <section>
> <header>
> <h2>J. R. Hackerbs implementation</h2>
> </header>
>
> <p>And here are the particularsb&</p>
> </section>
> </article>
> </body>
> </html>
>
> Or, algorithmically speaking:
>
> b" enclose the <body /> contents into an <article /> element, if
> therebs none;
>
> b" enclose uninterrupted sequences of two or more heading (<h1 />
> to <h6 />) elements into <hgroup />s;
>
> b" enclose the resulting <hgroup />s and the (so far unprocessed)
> singular heading elements into <header />s;
>
> b" and finally, enclose all the <article /> elements starting
> with a <header /> element (including one) and stopping at the
> next <header /> (excluding one) into <section />s; the first
> <article />bs <header /> is to be excluded.
>
> My current implementation is at [1], and what makes me wonder is
> whether itbs possible to avoid a template like the following
> there:
>
> <xsl:template
> match="xhtml:h1[preceding-sibling::*[position () = 1][self::xhtml:h1
or self::xhtml:h2 or self::xhtml:h3 or self::xhtml:h4 or self::xhtml:h5 or
self::xhtml:h6]] | xhtml:h2[preceding-sibling::*[position () =
1][self::xhtml:h1 or self::xhtml:h2 or self::xhtml:h3 or self::xhtml:h4 or
self::xhtml:h5 or self::xhtml:h6]] | xhtml:h3[preceding-sibling::*[position ()
= 1][self::xhtml:h1 or self::xhtml:h2 or self::xhtml:h3 or self::xhtml:h4 or
self::xhtml:h5 or self::xhtml:h6]] | xhtml:h4[preceding-sibling::*[position ()
= 1][self::xhtml:h1 or self::xhtml:h2 or self::xhtml:h3 or self::xhtml:h4 or
self::xhtml:h5 or self::xhtml:h6]] | xhtml:h5[preceding-sibling::*[position ()
= 1][self::xhtml:h1 or self::xhtml:h2 or self::xhtml:h3 or self::xhtml:h4 or
self::xhtml:h5 or self::xhtml:h6]] | xhtml:h6[preceding-sibling::*[position ()
= 1][self::xhtml:h1 or self::xhtml:h2 or self::xhtml:h3 or self::xhtml:h4 or
self::xhtml:h5 or self::xhtml:h6]]"
> priority="2"
> >
> <!-- do nothing -->
> </xsl:template>
>
> TIA.
>
> [1] http://am-1.org/~ivan/src/cxw3i61gtnuc78sbufiftcgz5f.xsl
>
> --
> FSF associate member #7257 http://sf-day.org/
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