Description =========== A very fast streaming multipart parser for node.js. Benchmarks can be found [here](https://github.com/mscdex/dicer/wiki/Benchmarks). Requirements ============ * [node.js](http://nodejs.org/) -- v4.5.0 or newer Install ============ npm install dicer Examples ======== * Parse an HTTP form upload ```javascript var inspect = require('util').inspect, http = require('http'); var Dicer = require('dicer'); // quick and dirty way to parse multipart boundary var RE_BOUNDARY = /^multipart\/.+?(?:; boundary=(?:(?:"(.+)")|(?:([^\s]+))))$/i, HTML = Buffer.from('\ \ '), PORT = 8080; http.createServer(function(req, res) { var m; if (req.method === 'POST' && req.headers['content-type'] && (m = RE_BOUNDARY.exec(req.headers['content-type']))) { var d = new Dicer({ boundary: m[1] || m[2] }); d.on('part', function(p) { console.log('New part!'); p.on('header', function(header) { for (var h in header) { console.log('Part header: k: ' + inspect(h) + ', v: ' + inspect(header[h])); } }); p.on('data', function(data) { console.log('Part data: ' + inspect(data.toString())); }); p.on('end', function() { console.log('End of part\n'); }); }); d.on('finish', function() { console.log('End of parts'); res.writeHead(200); res.end('Form submission successful!'); }); req.pipe(d); } else if (req.method === 'GET' && req.url === '/') { res.writeHead(200); res.end(HTML); } else { res.writeHead(404); res.end(); } }).listen(PORT, function() { console.log('Listening for requests on port ' + PORT); }); ``` API === _Dicer_ is a _WritableStream_ Dicer (special) events ---------------------- * **finish**() - Emitted when all parts have been parsed and the Dicer instance has been ended. * **part**(< _PartStream_ >stream) - Emitted when a new part has been found. * **preamble**(< _PartStream_ >stream) - Emitted for preamble if you should happen to need it (can usually be ignored). * **trailer**(< _Buffer_ >data) - Emitted when trailing data was found after the terminating boundary (as with the preamble, this can usually be ignored too). Dicer methods ------------- * **(constructor)**(< _object_ >config) - Creates and returns a new Dicer instance with the following valid `config` settings: * **boundary** - _string_ - This is the boundary used to detect the beginning of a new part. * **headerFirst** - _boolean_ - If true, preamble header parsing will be performed first. * **maxHeaderPairs** - _integer_ - The maximum number of header key=>value pairs to parse **Default:** 2000 (same as node's http). * **setBoundary**(< _string_ >boundary) - _(void)_ - Sets the boundary to use for parsing and performs some initialization needed for parsing. You should only need to use this if you set `headerFirst` to true in the constructor and are parsing the boundary from the preamble header. _PartStream_ is a _ReadableStream_ PartStream (special) events --------------------------- * **header**(< _object_ >header) - An object containing the header for this particular part. Each property value is an _array_ of one or more string values.