Subject: RE: Problems with mixed content and inline elements when transforming XHTML into another XML format
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Thu, 23 Feb 2006 23:51:29 -0000
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> I keep getting this error...
>
> Description: A sequence of more than one item is not allowed as the
> first argument of f:is-inline()
> URL: http://www.w3.org/TR/xpath20/#ERRXPTY0004
Sorry, the code should have said group-adjacent="f:is-inline(.)"
Michael Kay
http://www.saxonica.com/
>
> In case this this matters I am debugging this using the Oxygen editor
> for the mac. The processor I have selected is Saxon8B. Once again help
> is much appreciated.
>
> To make this easier here is the full xsl doc, input I am testing and
> desired output....
>
> XSL document...
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> version="2.0"
> xpath-default-namespace="http://www.w3.org/1999/xhtml"
> xmlns:f="http://whatever"
> xmlns:xs="http://www.w3.org/2001/XMLSchema">
> <xsl:template match="/">
> <xsl:copy>
> <xsl:for-each-group select="node()"
> group-adjacent="f:is-inline(node())">
> <xsl:choose>
> <xsl:when test="current-grouping-key()">
> <textnode><xsl:copy-of
> select="current-group()"/></textnode>
> </xsl:when>
> <xsl:otherwise>
> <xsl:copy-of select="current-group()"/>
> </xsl:otherwise>
> </xsl:choose>
> </xsl:for-each-group>
> </xsl:copy>
> </xsl:template>
>
> <xsl:function name="f:is-inline" as="xs:boolean">
> <xsl:param name="node" as="node()"/>
> <xsl:sequence select="$node instance of text() or
> $node[self::u|self::b|self::i|self::strong|self::span|self::em
> |self::br]"/>
> </xsl:function>
> </xsl:stylesheet>
>
> XHTML Document...
>
> <?xml version="1.0" encoding="utf-8"?>
> <html xmlns="http://www.w3.org/1999/xhtml">
> <head>
> <meta name="generator" content="HTML Tidy, see www.w3.org"/>
> <title>The Title Is</title>
> </head>
> <body>
> <ul id="bar">
> <li/>
> <li>foo<br/> after break <div/> after empty div</li>
> <li>bar<strong>baz</strong></li>
> </ul>
> <ol>
> <li>Item 1</li>
> <li>Item 2</li>
> </ol>
> <p><span>foo</span><br/> asdf <b>bold another</b>
> and <strong>a strong item</strong>
> </p>
> <div>
> Content of a <b>div tag</b> here.
> <ul>
> <li>
> Nested List Item 1
> </li>
> <li>
> Nested List Item 2
> </li>
> </ul>
> Now list is done
> </div>
> </body>
> </html>
>
> Desired output...
> <?xml version="1.0" encoding="utf-8"?>
> <html xmlns="http://www.w3.org/1999/xhtml">
> <head>
> <meta name="generator" content="HTML Tidy, see www.w3.org"/>
> <title><textnode>The Title Is</textnode></title>
> </head>
> <body>
> <ul id="bar">
> <li/>
> <li><textnode>foo<br/> after break
> </textnode><div/><textnode> after empty div</textnode></li>
> <li><textnode>bar<strong>baz</strong></textnode></li>
> </ul>
> <ol>
> <li><textnode>Item 1</textnode></li>
> <li><textnode>Item 2</textnode></li>
> </ol>
> <p><textnode><span>foo</span><br/> asdf <b>bold another</b>
> and <strong>a strong item</strong></textnode>
> </p>
> <div>
> <textnode>Content of a <b>div tag</b> here.</textnode>
> <ul>
> <li>
> <textnode>Nested List Item 1</textnode>
> </li>
> <li>
> <textnode>Nested List Item 2</textnode>
> </li>
> </ul>
> <textnode>Now list is done</textnode>
> </div>
> </body>
> </html>
>
> > -----Original Message-----
> > You're using XSLT 2.0 so this can be solved using grouping
> constructs.
> >
> > Forget the templates that create <textnode> elements.
> >
> > You want something like this, which causes adjacent
> "inline" nodes to
> be
> > grouped under a new element, with a function to decide
> whether a node
> is an
> > "inline" node:
> >
> > <xsl:template match="div">
> > <xsl:copy>
> > <xsl:for-each-group select="node()"
> > group-adjacent="f:is-inline(node())">
> > <xsl:choose>
> > <xsl:when test="current-grouping-key()">
> > <textnode><xsl:copy-of
> select="current-group()"/></textnode>
> > </xsl:when>
> > <xsl:otherwise>
> > <xsl:copy-of select="current-group()"/>
> > </
> > </
> > </
> > </
> > </
> >
> > <xsl:function name="f:is-inline" as="xs:boolean">
> > <xsl:param name="node" as="node()"/>
> > <xsl:sequence select="$node instanceof text() or
> > $node[self::u|self::b|self::i]"/>
> > </xsl:function>
>
> Michael Kay
> http://www.saxonica.com/
>
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