bundalo
======
Lead Maintainer: [Aria Stewart](https://github.com/aredridel)  

Extract/cache/render property files/strings using i18n rules and various rendering engines

[![Build Status](https://travis-ci.org/krakenjs/bundalo.svg?branch=master)](https://travis-ci.org/krakenjs/bundalo)

## Use cases

### Initialize bundalo

Call bundalo module with a key that matches your template engine, plus locale information.
Currently only dust and none are supported as engines.

```javascript
var bundalo = require('bundalo');

//couple of configs for later
var config = {
	"contentPath": "locales/", //required
	"fallback": "en-US",       //optional
	"engine": "dust",          //required
	"cache": false             //optional, default is true
};
var config2 = {
	"contentPath": "globals/",
	"fallback": "",
	"engine": "none"
};

//create two bundalo instances. Each has its own cache
var bundle = bundalo(config);
var bundle2 = bundalo(config);

```

### Use bundalo

User wants key/values from some bundle file, corrected for locality, and possibly rendered with some data model

```javascript
bundle.get({'bundle': 'errors/server','locality': 'en-US', 'model': {'name': 'Will Robinson'}}, function bundaloReturn(err, data) {
	console.log("what'd we get from bundalo.get?", data, err);
	cb({
		'err': data.error
	});
});
```

User wants multiple bundles in a single call, to avoid calling bundalo multiple times

```javascript
bundle.get({'bundle': ['errors/server', 'errors/client'], 'locality': 'en-US',  'model': {'name': 'Will Robinson'}}, function bundaloReturn(err, data) {
	console.log("what'd we get from bundalo.get?", data, err);
	cb({
		'clienterr': data['errors/client'].error,
		'servererr': data['errors/server'].error
	});
});
```

User wants multiple bundles in a single call, and wants to alias the bundles for easier management upon return

```javascript
bundle.get('bundle': {
	'server': 'errors/server',
	'client': 'errors/client'
}, 'locality': 'en-US', 'model': {'name': 'Will Robinson'}}, function bundaloReturn(err, data) {
	console.log("what'd we get from bundalo.get?", data, err);
	cb({
		'clienterr': data.client.error,
		'servererr': data.server.error
	});
});
```

## Design

When a user first requests a bundle, bundalo will:
* fetch the correct file from the file system based on locality
* [dust only] compile the properties file into a dust template
* cache the [compiled dust] template
* [dust only] render the template with any provided data model
* deserialize the rendered properties file via spud
* return a JSON data object with the rendered  values

Upon subsequent requests for a bundle, the previously cached compiled template will be re-rendered and returned.
Cache will be based upon the bundle path provided by the user, plus the locality path information.
I.e. 'US/en/foo/bar' is a separate cached object from 'DE/de/foo/bar'.
Cache is consistent per bundalo instance created.