using xml2js to enable request body parsing for express

xmlBodyParser.js

var express = require('express'),

var app = express();

var utils = require('express/node_modules/connect/lib/utils'), xml2js = require('xml2js');

function xmlBodyParser(req, res, next) {
    if (req._body) return next();
    req.body = req.body || {};

    // ignore GET
    if ('GET' == req.method || 'HEAD' == req.method) return next();

    // check Content-Type
    if ('text/xml' != utils.mime(req)) return next();

    // flag as parsed
    req._body = true;

    // parse
    var buf = '';
    req.setEncoding('utf8');
    req.on('data', function(chunk){ buf += chunk });
    req.on('end', function(){  
  		var parseString = xml2js.parseString;
      parseString(buf, function(err, json) {
        if (err) {
            err.status = 400;
            next(err);
        } else {
            req.body = json;
            next();
        }
      });
    });
};

app.configure(function() {
	app.use(express.logger('dev'));		/* 'default', 'short', 'tiny', 'dev' */
	app.use(express.bodyParser());	
	app.use(xmlBodyParser);
});