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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: is it possible to construct new xml with xsl ?
 Hi. 1) The XML declaration is not a PI, correct. In the XPath data model, the XML processing instruction is not available, so there's no way for a portable XSLT 1.0 transformation to access it. 2) The DOM *allows* to report the XML declaration as PI, and this is what MSXML's DOM does. 3) Microsofts "WD-XSL" language (and this is what the builtin stylesheet uses) is not XSLT and does not use XPath (and this is why it can access the XML declaration). > -----Original Message----- > From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx > [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of Michael > Leditschke > Sent: Monday, June 17, 2002 4:05 AM > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx > Subject: RE: is it possible to construct new xml with xsl ? > > > <snip/> > > > IE will assume the output of the transformation is meant to be > > interpreted as > > HTML. If you want collapsible views, you need to use a stylesheet > > that will > > produce the (D)HTML that makes the browser produce the view you > want. See > > http://www.dpawson.co.uk/xsl/sect2/microsoft.html#d58e229 > > > I had a look at this stylesheet and have a concern about the > way in which the XML declaration is being generated. > > > > To my knowledge, the XML Declaration is not a PI per the XML 1.0 > spec (section 2.6). Correct? > > Is it illegal for a parser to pass it through as a PI? I would > have thought it was illegal given the BNF in the XML 1.0 spec. > > > Conclusion -> No parser should pass the XML declaration to > an application. > > > > The XPath 1.0 data model is explicit in section 5.5 that > > "The XML declaration is not a processing instruction. > Therefore, there is no processing instruction node > corresponding to the XML declaration." > > The XSL spec adopts the XPath data model without mention > of adding the XML declaration as a PI. > > Conclusion -> Even if a parser were allowed to pass the > XML declaration through as a PI, it is not > represented as such in the XSLT data model. > > > > Now, when displaying a file in IE using the referenced template, > it does show the xml declaration as provided in the file. If > no declaration in the file, there's none in the display, etc. > > The stylesheet has a template that starts > > <xsl:template match="pi('xml')"> > > Given the above references, and the operation of IE, > am I correct in assuming > > > 1. MSXML is (incorrectly) passing through the XML declaration > as a PI in order to render it per the stylesheet. > > > OR > > > 2. It's not just the stylesheet contributing to the displayed > information. Some additional code must be being invoked to > detect this stylesheet, and somehow get at and render the XML > declaration information, which to my knowledge is supposed > to be hidden from the application by the parser. > > > I tried writing a stylesheet of my own looking > for an 'xml' PI and tested it with IE, the results of which > suggested MSXML is not passing through the declaration as a PI, > so 2) above looks more likely. > > Source document > > <?xml version="1.0" encoding="UTF-8"?> > <?xml-stylesheet type="text/xsl" href="hello.xsl"?> > <greeting>Hello, world!</greeting> > > > Stylesheet > > <xsl:stylesheet version="1.0" > xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> > <xsl:template match="/"> > <html> > <head> > <title>XML Declaration test</title> > </head> > <body> > <p> > <xsl:choose> > <xsl:when test="processing-instruction('xml')"> > XML Declaration passed through as PI.</xsl:when> > <xsl:otherwise> > XML Declaration not passed through as PI.</xsl:otherwise> > </xsl:choose> > </p> > </body> > </html> > </xsl:template> > </xsl:stylesheet> > > > Result > > <html> > <head> > <META http-equiv="Content-Type" content="text/html; charset=UTF-16"> > <title>XML Declaration test</title> > </head> > <body> > <p>XML Declaration not passed through as PI.</p> > </body> > </html> > > > If the stylesheet authors/modifiers are out there (Nate Austin or > Jonathan Marsh), would you care to comment? > > > Regards > Michael > > > > BTW I tried the MS stylesheet out with SAXON 5.6.2, and as expected, > the xml declaration information was missing in the resulting > HTML. > > > > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list 
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