equal-streams

This module check if two (or more) readable streams are equal. A SHA1 hash is created for each given stream. After all streams end, the hashes are compared and results are returned through a callback.

Install

Using npm:

$ npm install equal-streams

From source:

$ git clone https://github.com/ladinu/equal-streams.git
$ cd equal-streams/
$ npm link

Examples

var compare = require('equal-streams');
 
var streamOne = request('http://example.com');
var streamTwo = request('http://example.com');
 
compare(streamOne, streamTwo, function(err, equal) {
  if (err) return console.log(err);
  if (equal) console.log('streamOne === streamTwo');
});
 
var google = request('http://google.com');
var bing   = request('http://bing.com');
 
compare(google, bing, function(err, equal) {
  if (err) return console.log(err);
  if (!equal) console.log('google !== bing');
});

API

equalStreams([streams], callback)

• Must provide at least two readable streams and a callback. If one of the streams emit an error, callback will return with an error.

• streams can be a single array of streams (equalStreams([s1, s2, s3], callback)) or multiple streams i.e equalStreams(s1, s2, s3, callback)

• callback will return with a boolean or an error (callback(err, equal))

Testing

$ cd equal-streams/
$ npm install
$ npm test

License

Copyright (c) 2013 Ladinu Chandrasinghe

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.