From: Geurt Lagemaat (Lagemaat@oriana-automatisering.com)
Date: Thu Jan 30 2003 - 11:40:03 PST
Nikolai, Eliot and Jeff,
Thank you for you're answers. The
<fo:external-graphic src="url({unparsed-entity-uri(@picfile)})"/>
solution works nicely. (It does function also without the url statement but
it generates a warning then).
I do agree with Nikolai that there are easier solutions.
Yours,
Geurt Lagemaat
Oriana Automatisering
-----Oorspronkelijk bericht-----
Van: owner-xep-support@www.renderx.com
[mailto:owner-xep-support@www.renderx.com] Namens Jeff Beal
Verzonden: donderdag 30 januari 2003 16:56
Aan: 'xep-support@renderx.com'
Onderwerp: RE: [xep-support] Using entities for images in XEP
The following XSL template will convert <dog picfile="colliepic"/> to fo.
The entity declaration is correct as is.
<xsl:template match="dog">
<fo:block>
<fo:external-graphic src="{unparsed-entity-uri(@picfile)}"/>
</fo:block>
</xsl:template>
The key is the unparsed-entity-uri() function, which accepts a string that
is an entity name as an argument and returns a fully-qualified URI pointing
to the resource in question. Again, you do not need the &name; syntax in an
attribute of type ENTITY, the attribute declaration is sufficient to let the
parser know the value to be an entity reference.
Jeff Beal
-----Original Message-----
From: Nikolai Grigoriev [mailto:grig@renderx.com]
Sent: Thursday, January 30, 2003 9:54 AM
To: xep-support@renderx.com
Subject: Re: [xep-support] Using entities for images in XEP
Geurt,
> Does XEP support constructs like:
>
> <?xml version="1.0"?>
> <!DOCTYPE dog [
> <!NOTATION JPEG SYSTEM "Joint Photographic Experts Group">
> <!ENTITY colliepic SYSTEM "lassie.jpg" NDATA JPEG>
> <!ELEMENT dog EMPTY>
> <!ATTLIST dog picfile ENTITY #REQUIRED>
> ]>
> <dog picfile="colliepic"/>
(It should be <dog picfile="&colliepic;"/>, shouldn't it?)
I don't know any method to use unparsed entities in XSL FO.
Their status is quite special: an XML parser is expected
to "notify" the application when it encounters such an entity.
This "notification" can hardly be mapped to existing XSL
data types.
> If it does, how to reference the image in this document in
> fo:external-graphic src=""?
No, it does not; but I wonder why do you need it, at all?
Won't it be simpler if you make your entity CDATA instead
of NDATA? Something like this:
<!DOCTYPE dog [
<!ENTITY colliepic "lassie.jpg">
<!ELEMENT dog EMPTY>
<!ATTLIST dog picfile ENTITY #REQUIRED>
]>
<dog picfile="&colliepic;"/>
----------
<xsl:template match="dog">
.....
<fo:external-graphic src="url({@picfile})"/>
....
Best regards,
Nikolai Grigoriev
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