Re: [xml] How to add a DTD to a document

[Nick Wellnhofer <wellnhofer aevum de>]

> On 3/9/2014 17:33, Nick Wellnhofer wrote:
> > I can’t find out how to add a DTD (internal subset) to a document without poking into libxml2’s internal 
> > data structures. The obvious approach is to add a xmlDtdPtr using
> > xmlAddPrevSibling on the document root. But this will cause a memory leak because xmlFreeDoc won’t free 
> > the DTD nodes. It only frees the DTDs pointed to by doc->intSubset and doc->extSubset. So do I have to 
> > deal with these struct members manually or is there a better way?
> xmlCreateIntSubset() ? But it looks like you'll need to manually free previous xmlDtd first.

Suppose that I already have a xmlDtdPtr, for example from another document. This question came up when trying 
to correctly implement the “replaceNode” method in the Perl bindings.

Nick