It is a bug in the epub/docbook.xsl stylesheet file. This template:
<xsl:template match="d:author|d:corpauthor" mode="opf.metadata">
creates the dc:creator element and tries to add an attribute named
"opf:file-as" by calling the template named 'person.name.last-first'. However,
that template generates an HTML <span> element, and you cannot put an element
into an attribute value. The solution is to take the text value of the that
template call:
<xsl:template match="d:author|d:corpauthor" mode="opf.metadata">
<xsl:variable name="n">
<xsl:call-template name="person.name">
<xsl:with-param name="node" select="."/>
</xsl:call-template>
</xsl:variable>
<xsl:element name="dc:creator">
<xsl:attribute name="opf:file-as">
<xsl:variable name="attvalue">
<xsl:call-template name="person.name.last-first">
<xsl:with-param name="node" select="."/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="$attvalue"/>
</xsl:attribute>
<xsl:value-of select="normalize-space(string($n))"/>
</xsl:element>
</xsl:template>
I'll fix this in the source, and you can use this in your customization layer.
Bob Stayton
Sagehill Enterprises
b...@sagehill.net
From: Marcel Tromp
Sent: Tuesday, April 02, 2013 1:40 PM
To: Bob Stayton
Cc: docbook-apps
Subject: Re: [docbook-apps] Epub and Saxon
It is the author element in info that triggers the problem:
<author>
<personname>
<firstname>Marcel</firstname>
<surname>Tromp</surname>
</personname>
</author>
If I use an empty authorgroup, no errors are generated. The error I showed
before is generated twice: once for firstname, once for lastname.
MT
--
On Tue, Apr 2, 2013 at 8:56 AM, Bob Stayton <b...@sagehill.net> wrote:
Hi Marcel,
Can you determine exactly which element in info is triggering that error?
Perhaps comment out all but one element at a time?
Bob Stayton
Sagehill Enterprises
b...@sagehill.net
From: Marcel Tromp
Sent: Monday, April 01, 2013 1:11 PM
To: docbook-apps
Subject: [docbook-apps] Epub and Saxon
Hi,
I am setting up flow to generate epub using 1.78.1, but will use Saxon
instead of xsltproc.
With xsltproc, document converts without any warnings/errors, but Saxon
throws recoverable errors:
Recoverable error
at xsl:attribute on line 211 of
file://work/mtools/docbook-xsl-ns/dev/xhtml-1_1/inline.xsl:
Cannot write an attribute node when no element start tag is open
Writing OEBPS/content.opf
This seems to be caused by adding the author data to content.opf in line 260
of epub/docbook.xsl:
<xsl:apply-templates select="/*/*[contains(name(.), 'info')]/*"
mode="opf.metadata"/>
Although the generated file seems ok, the error output will be
problematic/confusing for users.
Is there a way to suppress these errors, or even better, prevent them from
happing?
MT
--
