FixedChunkStream

Uses an internal buffer to provide fixed-sized data chunks from a readable stream.

npm install fixed-chunk-stream

Usage

var fs = require('fs');
var path = require('path');
var FixedChunkStream = require('fixed-chunk-stream');
 
var filePath = path.resolve(process.argv[2]);
var stream = new FixedChunkStream(fs.createReadStream(filePath), { chunkSize: 512 });
 
stream.on('data', function (chunk) {
  console.log(chunk, chunk.length);
});

API

stream = new FixedChunkStream(stream, [options])

Options can only include one property currently: chunkSize, the byte length each chunk should occupy.

stream.on('data', function (chunk) { ... })

Provides a single chunk of data with a maximum size of chunkSize as originally specified in the constructor. The chunk will be less than chunkSize if it is the last chunk to be emitted and the file was not evenly divisible by chunkSize.

i.e. A 1025 byte file with a chunk size of 1024 would result in two chunks being emitted - one 1024 byte chunk and one 1 byte chunk.

stream.on('end', function () { ... })

Emitted when the original stream's end event is emitted.