var fs = require('fs')
var zlib = require('zlib')
var strs = require('stringstream')
var utf8Stream = fs.createReadStream('massiveLogFile.gz')
.pipe(zlib.createGunzip())
.pipe(strs('utf8'))No need to deal with setEncoding() weirdness, just compose streams
like they were supposed to be!
Handles input and output encoding:
// Stream from utf8 to hex to base64... Why not, ay.
var hex64Stream = fs.createReadStream('myFile')
.pipe(strs('utf8', 'hex'))
.pipe(strs('hex', 'base64'))Also deals with base64 output correctly by aligning each emitted data
chunk so that there are no dangling = characters:
var stream = fs.createReadStream('myFile').pipe(strs('base64'))
var base64Str = ''
stream.on('data', function(data) { base64Str += data })
stream.on('end', function() {
console.log('My base64 encoded file is: ' + base64Str) // Wouldn't work with setEncoding()
console.log('Original file is: ' + new Buffer(base64Str, 'base64'))
})