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stream-splitter

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stream-splitter

Split streaming binary data like a pro!


Version published
Maintainers
1
Weekly downloads
235
decreased by-27.47%

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Source

stream-splitter

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Split them streams, in style!

var fs = require("fs");
var StreamSplitter = require("stream-splitter");

var splitter = fs.createReadStream("afile.txt").pipe(StreamSplitter("\n"));

// Set encoding on the splitter Stream, so tokens come back as a String.
splitter.encoding = "utf8";

splitter.on("token", function(token) {
	console.log("A line of input:", token);
});

splitter.on("done", function() {
	console.log("And that's all folks!");
});

splitter.on("error", function(err) {
	// Any errors that occur on a source stream will be emitted on the 
	// splitter Stream, if the source stream is piped into the splitter 
	// Stream, and if the source stream doesn't have any other error
	// handlers registered.
	console.error("Oh noes!", err);
});

Installation

npm install stream-splitter

API

StreamSplitter = require("stream-splitter")

StreamSplitter accepts a single argument, and returns a WritableStream:

	aWritableStream = StreamSplitter(token);

Usage

See the example above. Some notes:

  • The WritableStream returned will sense if you pipe a stream into it, and will register an error handler on the source stream. If an error occurs on the source stream and you don't have any other handlers registered, the returned WritableStream will emit the source stream error for you. This enables you to chain a newly created ReadableStream straight into a StreamSplitter.
  • The emitted tokens will be Buffers unless you set the splitter Stream encoding field.
  • This lib is designed to be as efficient as possible, making use of substack/node-buffers library to avoid unnecessary Buffer allocations/copies.

Tests

Checkout the repository and run

npm install && npm test

(Un)License

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

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 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.

For more information, please refer to http://unlicense.org/

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Last updated on 25 Feb 2015

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