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