39 lines
1 KiB
Markdown
39 lines
1 KiB
Markdown
# Decode streams into strings The Right Way(tm)
|
|
|
|
```javascript
|
|
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:
|
|
|
|
```javascript
|
|
// 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:
|
|
|
|
```javascript
|
|
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'))
|
|
})
|
|
```
|