[XML-SIG] [ Newbie ] Parsing XML with an external DTD

[Fred L. Drake, Jr.]

Alexandre Fayolle writes:
 > I guess you could wrap your document into another one using an entity
 > (untested) :

  Sorry, not quite!  Aside from the typographic error in the XML
declaration (missing "?" at end), there's the little matter that the
document element must start & end in the document entity; it can't be
included through an entity reference.
  I think you can do this in SGML, but not in XML.
  You can't even just concatenate a new prolog with the document if
the document contains an XML declaration, because the second XML
declaration is a well-formedness error.
  In practice, what you probably want to do is check for the XML
declaration; if present, provide the declaration to the parser, then
the DOCTYPE declaration, then the rest of the input document.  How to
do this depends on the parser interface you're using.

 > --------------8<--------------------------------
 > <?xml version='1.0' standalone='no'>
 > <!DOCTYPE MONDOC SYSTEM "dtd-uri" 
 >    [<!ENTITY core SYSTEM "mondoc.xml">]
 > >
 > &core;
 > --------------8<--------------------------------


  -Fred

-- 
Fred L. Drake, Jr.  <fdrake at acm.org>
PythonLabs at Zope Corporation