https://github.com/jtblin/stream-ext

Simple extensions for node.js streams.
https://github.com/jtblin/stream-ext

Last synced: 19 days ago
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Simple extensions for node.js streams.

• Host: GitHub
• URL: https://github.com/jtblin/stream-ext
• Owner: jtblin
• License: other
• Created: 2014-02-15T13:45:17.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2014-02-15T13:51:41.000Z (almost 11 years ago)
• Last Synced: 2024-10-28T09:07:01.611Z (2 months ago)
• Language: JavaScript
• Size: 113 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# stream-ext

Simple extensions for streams. You can pass a callback or listen on the stream.

## StringStream

Writable stream that outputs as a string, useful when you want to get the result of an http request as a

string after piping to gunzip for example.

    var request = require('http').request;

    var r = request({ hostname: 'www.apple.com', port: 80, headers: { 'Accept-Encoding' : 'gzip' } });

    r.on('response', function (resp) {

      var gunzip = require('zlib').createGunzip();

      var stream = require('../').StringStream();

      stream.on('end', function (body) {

        console.log(body);

      });

      resp.pipe(gunzip).pipe(stream);

    });

    r.end();

## BufferStream

Readable and writable buffer stream, useful when you receive an image in base64 and want to pipe it to a stream.

    var im = require('imagemagick-stream');

    var thumbnail = im().thumbnail('150x150').quality(90);

    var bs = require('stream-ext').BufferStream;

    // assuming you receive an image base64 string and want to upload to your bucket

    upload(myBucketUrl, image);

    function upload(url, img) {

      var out = new bs(), image = new bs(new Buffer(img, 'base64'));

      out.on('end', function (data) {

        s3.upload(config.s3.bucket, {Key: url, Body: data, ContentType: 'image/jpeg'})

      });

      image.pipe(thumbnail).pipe(out);

    }