unibabel.js/README.md

Unibabel
==========

Base64, TypedArrays, and UTF-8 / Unicode conversions in Browser (and Node) JavaScript

See <https://coolaj86.com/articles/base64-unicode-utf-8-javascript-and-you/>

See also

  * [TextEncoder](https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder/encode) / [TextDecoder](https://developer.mozilla.org/en-US/docs/Web/API/TextDecoder/decode)
  * [DateView](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView)
  * [text-encoding](https://github.com/inexorabletash/text-encoding)
  * [TextEncoderLite (based on Buffer)](https://github.com/coolaj86/TextEncoderLite/tree/litest)
  * [TextEncoderLite (based on text-encoding)](https://github.com/coolaj86/TextEncoderLite/tree/lite)
  * [Beatgammit's base64-js](https://github.com/beatgammit/base64-js)

API
===

```javascript
// TypedArray <--> UTF8
var uint8Array = Unibabel.strToUtf8Arr(str);
var str = Unibabel.utf8ArrToStr(uint8Array);

// TypedArray <--> Base64
var base64 = Unibabel.arrToBase64(uint8Array)
var uint8Array = Unibabel.base64ToArr(base64)
```

**Normal APIs**

* utf8ToBuffer(utf8str) => array
* bufferToUtf8(array) => string

* utf8ToBase64(utf8str) => base64
* base64ToUtf8(base64) => string

* bufferToBase64(array) => base64
* base64ToBuffer(base64) => array

**Hex APIs**

`unibabel.hex.js`

* hexToBuffer(hexstr) => array
* bufferToHex(array) => hexstr

**Helper APIs**

* utf8ToBinaryString(utf8str) => binstr
* binaryStringToUtf8(binstr) => utf8str
* bufferToBinaryString(buffer) => binstr
* binaryStringToBuffer(binstr) => array

Examples
========

```javascript
// Base64

var myArray = Unibabel.base64ToArr("QmFzZSA2NCDigJQgTW96aWxsYSBEZXZlbG9wZXIgTmV0d29yaw=="); // "Base 64 \u2014 Mozilla Developer Network"
var myBuffer = Unibabel.base64ToArr("QmFzZSA2NCDigJQgTW96aWxsYSBEZXZlbG9wZXIgTmV0d29yaw==").buffer; // "Base 64 \u2014 Mozilla Developer Network"

console.log(myBuffer.byteLength);

// Crazy Unicode

var sMyInput = "I'm a ☢ ☃ that plays 𝄢 guitar and spea̧͈͖ks Ar̽̾̈́͒͑ ̶̧̨̱̹̭̯ͧ̾ͬC̷̙̲̝͖ͭ̏ͥͮ͟Oͮ͏̮̪̝͍M̲̖͊̒ͪͩͬ̚̚͜!";
var aMyUTF8Input = Unibabel.strToUtf8Arr(sMyInput);
var sMyBase64 = Unibabel.arrToBase64(aMyUTF8Input);

alert(sMyBase64);

var aMyUTF8Output = Unibabel.base64ToArr(sMyBase64);
var sMyOutput = Unibabel.utf8ArrToStr(aMyUTF8Output);

alert(sMyOutput);
```

License
=======

Mozilla has licensed this code in the Public Domain, which means that I am at liberty to re-license my copy
under the Apache 2, which is something that, general speaking, your legal department will feel more comfortable with.

See <https://developer.mozilla.org/en-US/docs/MDN/About#Copyrights_and_licenses>

ChangeLog
====

v2.0.0
------

The new implementation is binary compatible with node.js, TextEncoder,
and other more-common UTF-8 encodings.

It is also based on DOM APIs which result in much less code and are still
backwards compatible all the way back to IE6 (not on purpose, just that
it happens to work).

See <https://coolaj86.com/articles/base64-unicode-utf-8-javascript-and-you/>

v1.0.0
------

This version was based on the work by good folks at the MDN, however,
the UTF-8 conversion was not byte-compatible with other UTF-8 conversions
(such as node.js and TextEncoder), so don't use it.
See <https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding>