Subject: Re: [xsl] retaining entity declarations while converting from one xml format to another From: David Carlisle <davidc@xxxxxxxxx> Date: Wed, 16 Dec 2009 00:53:12 GMT |
> I am sorry I forgot to mention one piece of information here. These > input files were originally SGML and were then converted to well but assuming spoon.jpg is a jpeg file, the same would apply in SGML as well, image entities should be NDATA (not parsed) and referenced as attribute values, not using & ; notation. > So when I do the <xsl:copy> the entities are not copied over. parsed entities (referenced by &) are expanded by the XML parser before XSLT even sees the input. So XSLT can not copy them as it never sees them. But you can not reference a jpg file that way. An NDATA entity is referenced as attribute value typically something like <!ENTITY spoon.jpg SYSTEM "spoon.jpg" NDATA jpg> ... <image ref="spoon.jpg"/> ... if you access the entity this way, then the attribute value is available to xslt and you can look up the SYSTEM URI using unparsed-entity-uri(). But you showed a parsed entity declaration <!ENTITY spoon.jpg SYSTEM "spoon.jpg" > which would be acceessed by & s p o o n . j p g ; such a reference would be expanded by the xml parser before xslt sees the data (and generate a fatal error if it is a jpeg file rather than xml) As you haven't shown how you are referencing the entities in the source file I can't really guess what to suggest. david ________________________________________________________________________ The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is: Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom. This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. ________________________________________________________________________
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