Subject: Re: [xsl] generating numerical character entities in html output From: David Carlisle <davidc@xxxxxxxxx> Date: Tue, 18 Jan 2005 12:25:36 GMT |
, it *should* be possible to generate it so the impossibility or difficulty in doing it should be considered something of a "bug" of xslt. I can live with that :-) but it's a pity anyway. It's not so much a bug but rather a feature of the design. XSLT is a tree manipulation language, you get virtually no information on the tags used in the source and only have the possibility of giving some optional hints as to how the result tree should be written out. <foo a="2">b</foo> and <foo a = '2' ><![CDATA[b]]></foo > produce identical input to XSLT lexical details of teh markup such as white space inside tags, whether " or ' was used for attribute values and whether CDATA sections or entity references were used is all resolved by the XML parser. You can't tell which form is used on input and you can only give vague hints as to which form you would like on output. (It may be that you do not output using tags at all, but just pass the tree straight to another processor, usually some kind of DOM API, or in mozilla, the tree is passed straight to the rendering engine, no tags are ever generated. whether character references are used comes under this same category of unimportant lexical details that you shouldn't have to worry about. Sometimes you do care about the way the XML is linearised, perhaps for educational purposes or to work with legacy not-really-xml systems but in such cases often you don't want to use xslt at all, or do teh transformation with xslt but post process with a non-xml text processing system such as sed or perl that can manipulate tags and references. No system that uses an XML parser on input can ever give you full control over such details. David ________________________________________________________________________ This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________
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