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From Jacob Kjome <h...@visi.com>
Subject Re: how do I detect internal subset when part of external subset?
Date Tue, 04 Apr 2006 05:29:57 GMT

I think I answered my own question.  I am no longer using doctypeDecl 
for subset detection.  I am now doing the following.  It seems to 
work.  Can anyone tell me if this is the best way to do this?...

     public void startDTD(XMLLocator arg0, Augmentations arg1) throws 
XNIException {
         fProcessingState = PROCESSING_INTERNAL_SUBSET; //initially, 
assume internal subset until startExternalSubset() says otherwise
         fInternalSubset = new StringBuffer(); //TODO - is it 
possible to avoid the stringbuffer in the case of no internal subset?

     public void startExternalSubset(XMLResourceIdentifier 
identifier, Augmentations augs) throws XNIException {
         fProcessingState = PROCESSING_EXTERNAL_SUBSET;

     public void endDTD(Augmentations augs) throws XNIException {
         if (fInternalSubset.length() > 0) {
         fProcessingState = PROCESSING_DOCUMENT;


At 10:49 PM 4/3/2006, you wrote:
 >If I have a document that looks like this...
 ><?xml version="1.0" encoding="UTF-8"?>
 >       <!ENTITY ServletURL ''>
 >       <STEP NAME="init" PARENT="init">
 >               <PROMPT>Greeting for &ServletURL;</PROMPT>
 >               <INPUT TYPE="HIDDEN" NAME="Action" 
 >               <INPUT TYPE="NONE"
 >       </STEP>
 >How do I tell the internal subset apart from the external
 >subset?  Normally I'd do...
 >public void doctypeDecl(String rootElement, String publicId, String
 >systemId, Augmentations augs) throws XNIException {
 >         if (publicId == null && systemId == null) {
 >             fProcessingState = PROCESSING_INTERNAL_SUBSET;
 >             fInternalSubset = new StringBuffer();
 >         } else {
 >             fProcessingState = PROCESSING_EXTERNAL_SUBSET;
 >         }
 >However, in this case, the System Id is not null, so I default to the
 >extenal subset processing state.  In the other DTD event methods, I
 >check which state I'm in and only append to the internal subset
 >buffer when I'm in the internal subset processing state.  If I build
 >a document from this, the output excludes the <!ENTITY> declaration
 >inside what is, really, the internal subset.  Thus, parsing of the
 >resulting document fails because the document references
 >"&ServletURL;", but the <!ENTITY> declaration does not exist.
 >So, is there some unique condition I can look for while using the XNI
 >parser to determine if I am parsing the internal subset when the
 >external and internal subsets are combined?
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