detecting DOCTYPE

[mvolkmann]

It would be nice if there was an event emitted for the DOCTYPE that provided the name, public id and system id.

[astro]

We can pass an XML_StartDoctypeDeclHandler to libexpat, so this is totally doable.

[mvolkmann]

I have written code that uses node-expat to parse XML and create a JSON representation. It can also take that JSON and reconstruct the XML in a lossless way. node-expat worked wonderfully for this! The DOCTYPE is the only part of XML I'm not handling now.

[rspieker]

bump

Would you be so kind to implement both startDoctypeDecl and endDoctypeDecl, I think you are right that these are already available in libexpat itself.
From what I (seem to) understand, these need to be added to the node-expat.cc file, if it was within my powers I'd submit a pull request, but every attempt I have made to the add these results in horrible compilation errors (as I am not proficient in c/c++) :)