/
index.js
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/
index.js
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/*!
* Connect - Multipart
* Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
* MIT Licensed
*/
/**
* Module dependencies.
*/
var utils = require('connect/utils'),
formidable = require('./support/formidable');
/**
* Setup form with the given `options`.
*
* Options:
*
* - `encoding` Encoding used for incoming forms. Defaults to utf8
* - `uploadDir` Directory to save uploads. Defaults to "/tmp"
* - `keepExtensions` Include original extensions. Defaults to `false`
*
* Examples:
*
* var server = connect.createServer(
* multipart({ keepExtensions: true }),
* function(req, res, next){
* // Form was submitted
* if (req.form) {
* // Do something when parsing is finished
* // and respond, or respond immediately
* // and work with the files.
* req.form.onComplete = function(err, fields, files){
* res.writeHead(200, {});
* if (err) res.write(JSON.stringify(err.message));
* res.write(JSON.stringify(fields));
* res.write(JSON.stringify(files));
* res.end();
* };
* // Regular request, pass to next middleware
* } else {
* next();
* }
* }
* );
*
* @param {Object} options
* @return {Function}
* @api public
*/
module.exports = function(options){
options = options || {};
return function(req, res, next){
if (formRequest(req)) {
var form = req.form = new formidable.IncomingForm;
utils.merge(form, options);
form.onComplete = function(){};
next();
form.parse(req, form.onComplete);
} else {
next();
}
};
};
/**
* Check if `req` is a valid form request.
*
* @param {IncomingMessage} req
* @return {Boolean}
* @api private
*/
function formRequest(req){
return (req.method === 'POST'
|| req.method === 'PUT')
&& (req.headers['content-type'].indexOf('multipart/form-data') >= 0
|| req.headers['content-type'].indexOf('urlencoded') >= 0);
}