NodeJS binding for fast XML parsing.
npm install node-expat
You use Node.js for speed? You process XML streams? Then you want the fastest XML parser: libexpat!
``
npm install node-expat
Important events emitted by a parser:
`javascript
(function () {
"use strict";
var expat = require('node-expat')
var parser = new expat.Parser('UTF-8')
parser.on('startElement', function (name, attrs) {
console.log(name, attrs)
})
parser.on('endElement', function (name) {
console.log(name)
})
parser.on('text', function (text) {
console.log(text)
})
parser.on('error', function (error) {
console.error(error)
})
parser.write('
Foobar
')}())
`
* #on('startElement' function (name, attrs) {})
*
*
*
*
*
*
*
*
*
* pauses#resume()
* resumes
We don't emit an error event because libexpat doesn't use a callback
either. Instead, check that parse() returns true. A descriptivegetError()
string can be obtained via to provide user feedback.
Alternatively, use the Parser like a node Stream. write() will emit
error events.
A word about special parsing of xmlns: this is not necessary in a
bare SAX parser like this, given that the DOM replacement you are
using (if any) is not relevant to the parser.
npm run benchmark
| module | ops/sec | native | XML compliant | stream |
|---------------------------------------------------------------------------------------|--------:|:------:|:-------------:|:--------------:|
| sax-js | 99,412 | ☐ | ☑ | ☑ |
| node-xml | 130,631 | ☐ | ☑ | ☑ |
| libxmljs | 276,136 | ☑ | ☑ | ☐ |
| node-expat | 322,769 | ☑ | ☑ | ☑ |
Higher is better.
`
npm install -g standard
npm test
If you fail to install node-expat as a dependency of node-xmpp, please update node-xmpp as it doesn't use node-expat anymore.
Dependencies for node-gyp https://github.com/TooTallNate/node-gyp#installation
See https://github.com/astro/node-expat/issues/78 if you are getting errors about not finding nan.h.
`
VCBUILD : error : project file 'node-expat\build\deps\libexpat\expat.vcproj' was not found or not a valid proj
ect file. [C:\Users\admin\AppData\Roaming\npm\node_modules\node-expat\build\bin
ding.sln]
Install Visual Studio C++ 2012 and run npm with the --msvs_version=2012` flag.