Re: [xml] question about dumping notations from extSubset

[Daniel Veillard <veillard redhat com>]

On Fri, Oct 31, 2008 at 04:24:34PM +0100, Petr Pajas wrote:
> Hi Daniel, All,
>
> I want to use xmlNodeDump on doc->extSubset but the output does not 
> contain any <!NOTATION...> declarations. 
>
> In xmlDtdDumpOutput there is the following comment and code:
>
>     /*
>      * Dump the notations first they are not in the DTD children 
> list
>      * Do this only on a standalone DTD or on the internal subset 
> though.
>      */
>     if ((dtd->notations != NULL) && ((dtd->doc == NULL) ||
>         (dtd->doc->intSubset == dtd))) {
>         xmlDumpNotationTable(buf->buffer, (xmlNotationTablePtr) 
> dtd->notations);
>     }
>
> Clearly the behavior I see is intended. Can you please explain why 
> is it so, i.e. why this function should only dump the notation 
> declarations for a standalone DTD or internal subset and not for an 
> external subset? Thanks,

  I think this was to avoid dumping notations which were coming
from the external subset of the document when saving the document
itself. One trick would be to set dtd->doc to NULL before calling
xmlDtdDumpOutput.
  Note that this won't match the external subset, you will only get
a single 'flat' file output of the subset in use, but this can be
useful sometimes.

Daniel

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