https://github.com/popomore/stream-switch

Stream condition for switch/case
https://github.com/popomore/stream-switch

Last synced: 3 months ago
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Stream condition for switch/case

• Host: GitHub
• URL: https://github.com/popomore/stream-switch
• Owner: popomore
• Created: 2014-06-27T15:28:17.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-12-11T10:09:30.000Z (about 10 years ago)
• Last Synced: 2024-04-29T08:21:22.084Z (9 months ago)
• Language: JavaScript
• Size: 164 KB
• Stars: 4
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: HISTORY.md

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README

        
# stream-switch [![Build Status](https://travis-ci.org/popomore/stream-switch.png?branch=master)](https://travis-ci.org/popomore/stream-switch) [![Coverage Status](https://coveralls.io/repos/popomore/stream-switch/badge.png?branch=master)](https://coveralls.io/r/popomore/stream-switch?branch=master) 

Stream condition for switch/case, just like [ternary-stream](https://github.com/robrich/ternary-stream) for if/else

---

## Install

```

$ npm install stream-switch -g

```

## Usage

![](https://raw.githubusercontent.com/popomore/stream-switch/master/img/switch.png)

```

var switchStream = require('stream-switch');

process.in

.pipe(switchStream(function(buf) {

  if (buf > 0) {

    return 'case1';

  } else if (buf < 0) {

    return 'case2'

  }

}, {

  'case1': streamA,

  'case2': streamB

}))

.pipe(process.stdout)

```

If buf great than 0, then pipe to streamA. If buf less than 0, then pipe to streamB. Otherwise buf equal to 0, pipe to output directly.

## API

switchStream(switch, cases)

#### switch

Switch condition determine which case will be choose.

Switch can be any type, if switch is function, it will be called.

#### cases

Choose which stream will be piped to by key switch return.

## LISENCE

Copyright (c) 2014 popomore. Licensed under the MIT license.