How would I append to my existing buffer array when my readstream gets new data?

Question

How would I append to my existing buffer array when my readstream gets new data?

This question is kind of awkward, so I'll just post my code and say what it's doing and what I want it to do.

var fs = require('fs');

var myReader = fs.createReadStream('file.tsv', { 
    flags: 'r',
    encoding: 'UTF-8',
    fd: null,
    mode: 0666,
    bufferSize: 64 * 1024,
    autoClose: true
});

myReader.on('data', function(data){

    var array = (array || data.split(/[\n]/));

    // Parse and print array

})

This works completely fine as long as there's only one chunk, any more than that, and my data can or will get split in the middle of a line.

I'm trying to keep the same array, and append a new chunk to it. The code above doesn't represent an attempt at that, but I've tried a few with += and array.concat(data.split(/[\n]/)) and I've not had much success.

So how can I keep the same array for parsing, and just append the new data to it as becomes available?

Thank you.

javascript
node.js
buffer
filestream
fs

Answer 1

Try this:

var t = "";
    myReader = fs.createReadStream(file, {
            flags: 'r',
            encoding: 'UTF-8',
            fd: null,
            mode: 0666,
            bufferSize: 128 * 1024,
            autoClose: true
        })

    myReader.addListener("data", function (chunk) {
            t += chunk;

        })