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delimiterstream

v0.3.0

Published

Get delimiter-separated chunks of data from a Readable Stream.

Downloads

7

Readme

DelimiterStream

Get delimiter-separated (e.g. new line) chunks of data from a Readable Stream, Websocket or other data source.

Methods

DelimiterStream.wrap(options, callback [, context, args...])

DelimiterStream.wrap(callback [, context, args...])

Returns a function that calls callback with a chunk of data as they are received. If options are passed then you can customize the delimiter and dataLimit. Delimiter defaults to \n.

The chunks will NOT include the delimiter.

Coming from v0.2.x?

v0.3.x is 100% backwards compatible with v0.2.x methods, but they are deprecated. They will be removed in v0.4.x.

Example

Primary use case is with a server endpoint that accepts new-line-delimited data:

var net = require('net'),
    DelimiterStream = require('delimiterstream'),
    server = net.createServer();
function onSocketLine(line) {
    //line will be a buffer
    console.log('Received line from', this.remoteAddress, line.toString());
}
server.on('connection', function(socket) {
    socket.on('data', DelimiterStream.wrap(onSocketLine, socket));
});
server.listen(9999);

It also works with files:

var fs = require('fs'),
    DelimiterStream = require('delimiterstream');
fs.readFile('example.csv', DelimiterStream.wrap(function(line) {
    //line will be a Buffer
    console.log(line.toString());
});

By James Hartig