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82 lines
1.6 KiB
Markdown
82 lines
1.6 KiB
Markdown
12 months ago
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# BSER Binary Serialization
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BSER is a binary serialization scheme that can be used as an alternative to JSON.
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BSER uses a framed encoding that makes it simpler to use to stream a sequence of
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encoded values.
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It is intended to be used for local-IPC only and strings are represented as binary
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with no specific encoding; this matches the convention employed by most operating
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system filename storage.
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For more details about the serialization scheme see
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[Watchman's docs](https://facebook.github.io/watchman/docs/bser.html).
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## API
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```js
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var bser = require('bser');
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```
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### bser.loadFromBuffer
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The is the synchronous decoder; given an input string or buffer,
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decodes a single value and returns it. Throws an error if the
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input is invalid.
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```js
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var obj = bser.loadFromBuffer(buf);
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```
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### bser.dumpToBuffer
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Synchronously encodes a value as BSER.
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```js
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var encoded = bser.dumpToBuffer(['hello']);
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console.log(bser.loadFromBuffer(encoded)); // ['hello']
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```
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### BunserBuf
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The asynchronous decoder API is implemented in the BunserBuf object.
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You may incrementally append data to this object and it will emit the
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decoded values via its `value` event.
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```js
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var bunser = new bser.BunserBuf();
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bunser.on('value', function(obj) {
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console.log(obj);
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});
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```
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Then in your socket `data` event:
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```js
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bunser.append(buf);
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```
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## Example
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Read BSER from socket:
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```js
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var bunser = new bser.BunserBuf();
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bunser.on('value', function(obj) {
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console.log('data from socket', obj);
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});
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var socket = net.connect('/socket');
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socket.on('data', function(buf) {
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bunser.append(buf);
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});
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```
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Write BSER to socket:
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```js
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socket.write(bser.dumpToBuffer(obj));
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```
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