[Haskell-cafe] Good XML-Enumerator Examples

[Michael Snoyman]

On Mon, Jul 11, 2011 at 8:42 AM, Michael Xavier <nemesisdesign at gmail.com> wrote:
> Hi Cafe.
> I'm writing a library which will be parsing XML data from a web API. I'm
> fairly well versed at this point in parsing JSON (aeson being my library of
> choice). For XML, I like the API of xml-enumerator over hxt because it
> appears to be nice and simple .The problem is that the example in the
> documentation isn't really sufficient for me to get a grasp of how to
> traverse XML and parse elements with multiple child nodes into a record.
> My first question: Am I barking up the wrong tree using xml-enumerator for
> anything beyond fairly flat, basic XML? If not, can anyone direct me to some
> good code samples using xml-enumerator to parse more complicated data?
> If I am indeed barking up the wrong tree, what would you all suggest?
> Thanks,

I think you're not barking up the wrong tree. I use xml-enumerator
extensively for some internal XML parsing, and some of it is very
complicated. Unfortunately, I can't share that code ;). However, there
are a few examples out there of some significant XML parsing:

https://github.com/snoyberg/yesodwiki/blob/master/Handler/UploadDitamap.hs
https://github.com/aristidb/aws (Aristid would have more info here)

I would recommend using either the Cursor or Resolved modules for
development, unless you really need more control over unresolved
entities. As a side point, I was just thinking this morning that I
should really write a tutorial on xml-enumerator. If you have some
specific questions, please pass them on, maybe I'll put together a
cookbook.

Michael