Subject: Re: xml entities From: Daniel Hinz <daniel.hinz@xxxxxxxxxxxxxxx> Date: Mon, 19 Jun 2000 18:58:35 +0200 |
Mike Brown wrote: > > > I am wondering if someone can tell me how to do something like: > > <!DOCTYPE apage[ > > <!ENTITY logoid "0001"> > > <!ENTITY logo SYSTEM "sections/logo/l_xx_&logoid;.xml"> > > ]> > > > > where the first entity defines a "variable" for the next entity. > > XML 1.0 provides "parameter" entities for this purpose. > > <!ENTITY % logoid "0001"> > <!ENTITY logo SYSTEM "sections/logo/l_xx_%logoid;.xml"> > I'm afraid that's not true. As stated earlier, the System Literal is a URI, which may be escaped by an XML processor. The spec states explicitly: "Note that a SystemLiteral can be parsed without scanning for markup." See http://www.w3.org/TR/1998/REC-xml-19980210#NT-ExternalID and http://www.w3.org/TR/1998/REC-xml-19980210#sec-common-syn Therefor you cannot use a parameter entity in a System Literal. Regards, Daniel Hinz -- Daniel Hinz - XML Evangelist and Software Developer Higher-Order AG Burchardstrasse 19, D-20095 Hamburg, Germany fon: 040 / 325587 - 0 fax: 040 / 325587 - 99 mailto:daniel.hinz@xxxxxxxxxxxxxxx http://www.higher-order.de XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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