You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.9 KiB
57 lines
1.9 KiB
4 years ago
|
# pumpify
|
||
|
|
|
||
|
|
Combine an array of streams into a single duplex stream using [pump](https://github.com/mafintosh/pump) and [duplexify](https://github.com/mafintosh/duplexify).
|
||
|
|
If one of the streams closes/errors all streams in the pipeline will be destroyed.
|
||
|
|
|
||
|
|
```
|
||
|
|
npm install pumpify
|
||
|
|
```
|
||
|
|
|
||
|
|
[](http://travis-ci.org/mafintosh/pumpify)
|
||
|
|
|
||
|
|
## Usage
|
||
|
|
|
||
|
|
Pass the streams you want to pipe together to pumpify `pipeline = pumpify(s1, s2, s3, ...)`.
|
||
|
|
`pipeline` is a duplex stream that writes to the first streams and reads from the last one.
|
||
|
|
Streams are piped together using [pump](https://github.com/mafintosh/pump) so if one of them closes
|
||
|
|
all streams will be destroyed.
|
||
|
|
|
||
|
|
``` js
|
||
|
|
var pumpify = require('pumpify')
|
||
|
|
var tar = require('tar-fs')
|
||
|
|
var zlib = require('zlib')
|
||
|
|
var fs = require('fs')
|
||
|
|
|
||
|
|
var untar = pumpify(zlib.createGunzip(), tar.extract('output-folder'))
|
||
|
|
// you can also pass an array instead
|
||
|
|
// var untar = pumpify([zlib.createGunzip(), tar.extract('output-folder')])
|
||
|
|
|
||
|
|
fs.createReadStream('some-gzipped-tarball.tgz').pipe(untar)
|
||
|
|
```
|
||
|
|
|
||
|
|
If you are pumping object streams together use `pipeline = pumpify.obj(s1, s2, ...)`.
|
||
|
|
Call `pipeline.destroy()` to destroy the pipeline (including the streams passed to pumpify).
|
||
|
|
|
||
|
|
### Using `setPipeline(s1, s2, ...)`
|
||
|
|
|
||
|
|
Similar to [duplexify](https://github.com/mafintosh/duplexify) you can also define the pipeline asynchronously using `setPipeline(s1, s2, ...)`
|
||
|
|
|
||
|
|
``` js
|
||
|
|
var untar = pumpify()
|
||
|
|
|
||
|
|
setTimeout(function() {
|
||
|
|
// will start draining the input now
|
||
|
|
untar.setPipeline(zlib.createGunzip(), tar.extract('output-folder'))
|
||
|
|
}, 1000)
|
||
|
|
|
||
|
|
fs.createReadStream('some-gzipped-tarball.tgz').pipe(untar)
|
||
|
|
```
|
||
|
|
|
||
|
|
## License
|
||
|
|
|
||
|
|
MIT
|
||
|
|
|
||
|
|
## Related
|
||
|
|
|
||
|
|
`pumpify` is part of the [mississippi stream utility collection](https://github.com/maxogden/mississippi) which includes more useful stream modules similar to this one.
|