pure js xml parser supporting xpath

[Angelo Chen]

Hi,

is there such xml parser exists? js based. my need is simple,
something like this in libxmljs:

xmlDoc = libxmljs.parseXmlString(xml)
s = xmlDoc.get("/paymentService/reply/error")

problem with libxmljs is, difficult to get it installed, any ideas?

Thanks,

Angelo

[Andrew Lunny]

https://github.com/racker/node-elementtree has worked quite well in my experience.

One catch I've found is that absolute XPath expressions don't work, so instead of:

xmlDoc.get("/paymentService/reply/error")

would need to say

xmlDoc._root.get("paymentService/reply/error")

Other than that (which is probably an easy patch, but I think they want to maintain API compatibility with the python source library), it's been fine.

Andrew

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[Angelo Chen]

looks good to me, but the doc provides no sample and i don't really
know pythonelement, any easy sample to get started?
say I got this following:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE paymentService PUBLIC "-//WorldPay//DTD WorldPay
PaymentService v1//EN"
"http://dtd.worldpay.com/
paymentService_v1.dtd">
<paymentService version="1.4" merchantCode="1234">
<reply>
<error code="5"><![CDATA[XML failed validation: Invalid payment
details : Card number must be at least 10 digits.:1212****]]>
</error>
</reply>
</paymentService>

and I want to get the error code which is 5 in this case? thanks.

On Jul 19, 1:41 am, Andrew Lunny <alu...@gmail.com> wrote:
> https://github.com/racker/node-elementtreehas worked quite well in my

> experience.
>
> One catch I've found is that absolute XPath expressions don't work, so
> instead of:
>
> xmlDoc.get("/paymentService/reply/error")
>
> would need to say
>
> xmlDoc._root.get("paymentService/reply/error")
>
> Other than that (which is probably an easy patch, but I think they want to
> maintain API compatibility with the python source library), it's been fine.
>
> Andrew
>

[Angelo Chen]

Hi Andrew,

testing out the node-elementtree, it does not have enough
documentation for me to fully understand, here is an example, how can
we get the Error using xpath:

var et = require('elementtree');
var s = '<p version="1.4" Code="123"><reply><error code="5"><!
[CDATA[XML failed]]></error></reply></p>'
var e = et.parse(s);
var r = e._root.find("p/reply/error")
console.log(r)

underfined

On Jul 19, 1:41 am, Andrew Lunny <alu...@gmail.com> wrote:

> https://github.com/racker/node-elementtreehas worked quite well in my

> experience.
>
> One catch I've found is that absolute XPath expressions don't work, so
> instead of:
>
> xmlDoc.get("/paymentService/reply/error")
>
> would need to say
>
> xmlDoc._root.get("paymentService/reply/error")
>
> Other than that (which is probably an easy patch, but I think they want to
> maintain API compatibility with the python source library), it's been fine.
>
> Andrew
>

[Angelo Chen]

node-elementtreehas works quite well, just too little documentation,
thanks for recommending.

On Jul 19, 1:41 am, Andrew Lunny <alu...@gmail.com> wrote:

> https://github.com/racker/node-elementtreehas worked quite well in my

> experience.
>
> One catch I've found is that absolute XPath expressions don't work, so
> instead of:
>
> xmlDoc.get("/paymentService/reply/error")
>
> would need to say
>
> xmlDoc._root.get("paymentService/reply/error")
>
> Other than that (which is probably an easy patch, but I think they want to
> maintain API compatibility with the python source library), it's been fine.
>
> Andrew
>