multibase - npm Package Compare versions

Comparing version 0.7.0 to 1.0.0

CHANGELOG.md

@@ -0,1 +1,16 @@
+<a name="1.0.0"></a>
+# [1.0.0](https://github.com/multiformats/js-multibase/compare/v0.7.0...v1.0.0) (2020-06-09)
+
+
+### Features
+
+* more encoding, errors, spec tests ([#55](https://github.com/multiformats/js-multibase/issues/55)) ([613363b](https://github.com/multiformats/js-multibase/commit/613363b)), closes [#49](https://github.com/multiformats/js-multibase/issues/49) [#38](https://github.com/multiformats/js-multibase/issues/38) [#46](https://github.com/multiformats/js-multibase/issues/46) [#53](https://github.com/multiformats/js-multibase/issues/53) [#26](https://github.com/multiformats/js-multibase/issues/26)
+
+
+### BREAKING CHANGES
+
+* `names` and `codes` export the full object that maps names/codes to base instances instead of just the keys
+
+
+
 <a name="0.7.0"></a>
@@ -2,0 +17,0 @@ # [0.7.0](https://github.com/multiformats/js-multibase/compare/v0.6.1...v0.7.0) (2020-03-16)

dist/index.min.js

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dist/index.min.js.LICENSE.txt

@@ -7,1 +7,3 @@ /*!
  */
+
+/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */

package.json

 {
   "name": "multibase",
-  "version": "0.7.0",
+  "version": "1.0.0",
   "description": "JavaScript implementation of the multibase specification",
-  "leadMaintainer": "Oli Evans <[e-mail]>",
+  "keywords": [
+    "IPFS",
+    "multiformats",
+    "multibase",
+    "encode",
+    "decode",
+    "formats"
+  ],
+  "homepage": "https://github.com/multiformats/js-multibase#readme",
+  "bugs": "https://github.com/multiformats/js-multibase/issues",
+  "license": "MIT",
+  "leadMaintainer": "Hugo Dias <[e-mail]>",
+  "files": [
+    "src",
+    "dist"
+  ],
   "main": "src/index.js",
+  "repository": "github:multiformats/js-multibase",
   "scripts": {
@@ -20,20 +36,9 @@ "lint": "aegir lint",
   },
-  "files": [
-    "src",
-    "dist"
-  ],
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/multiformats/js-multibase.git"
+  "dependencies": {
+    "base-x": "^3.0.8",
+    "buffer": "^5.5.0"
   },
-  "keywords": [
-    "IPFS",
-    "multiformats",
-    "multibase",
-    "encode",
-    "decode",
-    "formats"
-  ],
   "devDependencies": {
-    "aegir": "^21.3.0",
+    "aegir": "^22.0.0",
+    "benchmark": "^2.1.4",
     "chai": "^4.1.2",
@@ -43,24 +48,23 @@ "dirty-chai": "^2.0.1",
   },
-  "dependencies": {
-    "base-x": "^3.0.8",
-    "buffer": "^5.5.0"
+  "engines": {
+    "node": ">=10.0.0",
+    "npm": ">=6.0.0"
   },
-  "license": "MIT",
-  "bugs": {
-    "url": "https://github.com/multiformats/js-multibase/issues"
+  "eslintConfig": {
+    "extends": "./node_modules/aegir/src/config/eslintrc.js"
   },
-  "homepage": "https://github.com/multiformats/js-multibase#readme",
   "contributors": [
     "David Dias <[e-mail]>",
+    "Hugo Dias <[e-mail]>",
     "Oli Evans <[e-mail]>",
-    "Hugo Dias <[e-mail]>",
     "Friedel Ziegelmayer <[e-mail]>",
     "Alan Shaw <[e-mail]>",
-    "victorbjelkholm <[e-mail]>",
+    "ᴠɪᴄᴛᴏʀ ʙᴊᴇʟᴋʜᴏʟᴍ <[e-mail]>",
+    "Carson Farmer <[e-mail]>",
+    "Bora M. Alper <[e-mail]>",
+    "Richard Littauer <[e-mail]>",
     "achingbrain <[e-mail]>",
     "theobat <[e-mail]>",
-    "Bora M. Alper <[e-mail]>",
-    "Henrique Dias <[e-mail]>",
-    "Richard Littauer <[e-mail]>"
+    "Henrique Dias <[e-mail]>"
   ]
 }

README.md

@@ -15,3 +15,3 @@ js-multibase
 
-[Oli Evans](https://github.com/olizilla)
+[Hugo Dias](https://github.com/hugomrdias)
 
@@ -21,6 +21,4 @@ ## Table of Contents
 - [Install](#install)
-  - [In Node.js through npm](#in-nodejs-through-npm)
-  - [Browser: Browserify, Webpack, other bundlers](#browser-browserify-webpack-other-bundlers)
+  - [NPM](#npm)
   - [In the Browser through `<script>` tag](#in-the-browser-through-script-tag)
-    - [Gotchas](#gotchas)
 - [Usage](#usage)
@@ -42,17 +40,14 @@ - [Example](#example)
 
-### In Node.js through npm
+### NPM
 
-```bash
-> npm install --save multibase
+```sh
+$ npm install --save multibase
 ```
 
-### Browser: Browserify, Webpack, other bundlers
+The type definitions for this package are available on http://definitelytyped.org/. To install just use:
 
-The code published to npm that gets loaded on require is in fact an ES5 transpiled version with the right shims added. This means that you can require it and use with your favourite bundler without having to adjust asset management process.
-
-```js
-const multibase = require('multibase')
+```sh
+$ npm install -D @types/multibase
 ```
 
-
 ### In the Browser through `<script>` tag
@@ -64,4 +59,2 @@
 <script src="https://unpkg.com/multibase/dist/index.min.js"></script>
-<!-- OR -->
-<script src="https://unpkg.com/multibase/dist/index.js"></script>
 ```
@@ -87,3 +80,3 @@
 
-### `multibase` - Prefixes an encoded buffer with its multibase code
+#### `multibase` - Prefixes an encoded buffer with its multibase code
 
@@ -94,3 +87,3 @@ ```
 
-### `multibase.encode` - Encodes a buffer into one of the supported encodings, prefixing it with the multibase code
+#### `multibase.encode` - Encodes a buffer into one of the supported encodings, prefixing it with the multibase code
 
@@ -101,3 +94,3 @@ ```JavaScript
 
-### `multibase.decode` - Decodes a buffer or string
+#### `multibase.decode` - Decodes a buffer or string
 
@@ -108,3 +101,3 @@ ```JavaScript
 
-### `multibase.isEncoded` - Checks if buffer or string is encoded
+#### `multibase.isEncoded` - Checks if buffer or string is encoded
 
@@ -116,83 +109,26 @@ ```JavaScript
 
-### `multibase.names`
+#### `multibase.encoding` - Get the encoding by name or code
 
-A frozen `Array` of supported base encoding names.
+```JavaScript
+const value = multibase.encoding(nameOrCode)
+// value is an instance of the corresponding `Base`
+```
 
-### `multibase.codes`
+#### `multibase.encodingFromData` - Get the encoding from data either a `string` or `Buffer`
 
-A frozen `Array` of supported base encoding codes.
-
-### Supported Encodings, see [`src/constants.js`](/src/constants.js)
-
-## Architecture and Encoding/Decoding
-
-Multibase package defines all the supported bases and the location of their implementation in the constants.js file. A base is a class with a name, a code, an implementation and an alphabet.
-```js
-class Base {
-  constructor (name, code, implementation, alphabet) {
-    //...
-  }
-  // ...
-}
+```JavaScript
+const value = multibase.encodingFromData(data)
+// value is an instance of the corresponding `Base`
 ```
-The ```implementation``` is an object where the encoding/decoding functions are implemented. It must take one argument, (the alphabet) following the [base-x module](https://github.com/cryptocoinjs/base-x) architecture.
 
-The ```alphabet``` is the **ordered** set of defined symbols for a given base.
+#### `multibase.names`
 
-The idea behind this is that several bases may have implementations from different locations/modules so it's useful to have an object (and a summary) of all of them in one location (hence the constants.js).
+A frozen `Object` of supported base encoding names mapped to the corresponding `Base` instance.
 
-All the supported bases are currently using the npm [base-x](https://github.com/cryptocoinjs/base-x) module as their implementation. It is using bitwise maipulation to go from one base to another, so this module does not support padding at the moment.
+#### `multibase.codes`
 
-## Adding additional bases
+A frozen `Object` of supported base encoding codes  mapped to the corresponding `Base` instance.
 
-If the base you are looking for is not supported yet in js-multibase and you know a good encoding/decoding algorithm, you can add support for this base easily by editing the constants.js file
-(**you'll need to create an issue about that beforehand since a code and a canonical name have to be defined**):
+### Supported Encodings, see [`src/constants.js`](/src/constants.js)
 
-```js
-const baseX = require('base-x')
-//const newPackage = require('your-package-name')
-
-const constants = [
-  ['base2', '0', baseX, '01'],
-  ['base8', '7', baseX, '01234567'],
-  // ... [ 'your-base-name', 'code-to-be-defined', newPackage, 'alphabet']
-]
-```
-The required package defines the implementation of the encoding/decoding process. **It must comply by these rules** :
-- `encode` and `decode` functions with to-be-encoded buffer as the only expected argument
-- the require call use the `alphabet` given as an argument for the encoding/decoding process
-
-*If no package is specified , it means the base is not implemented yet*
-
-Adding a new base requires the tests to be updated. Test files to be updated are :
-- constants.spec.js
-```js
-describe('constants', () => {
-  it('constants indexed by name', () => {
-    const names = constants.names
-    expect(Object.keys(names).length).to.equal(constants-count) // currently 12
-  })
-
-  it('constants indexed by code', () => {
-    const codes = constants.codes
-    expect(Object.keys(codes).length).to.equal(constants-count)
-  })
-})
-```
-
-- multibase.spec.js
-    - if the base is implemented
-    ```js
-    const supportedBases = [
-      ['base2', 'yes mani !', '01111001011001010111001100100000011011010110000101101110011010010010000000100001'],
-      ['base8', 'yes mani !', '7171312714403326055632220041'],
-      ['base10', 'yes mani !', '9573277761329450583662625'],
-      // ... ['your-base-name', 'what you want', 'expected output']
-    ```
-    - if the base is not implemented yet
-    ```js
-    const supportedBases = [
-      // ... ['your-base-name']
-    ```
-
 ## Contribute
@@ -199,0 +135,0 @@

src/base.js

@@ -7,21 +7,21 @@ 'use strict'
     this.code = code
+    this.codeBuf = Buffer.from(this.code)
     this.alphabet = alphabet
-    if (implementation && alphabet) {
-      this.engine = implementation(alphabet)
-    }
+    this.engine = implementation(alphabet)
   }
 
-  encode (stringOrBuffer) {
-    return this.engine.encode(stringOrBuffer)
+  encode (buf) {
+    return this.engine.encode(buf)
   }
 
-  decode (stringOrBuffer) {
-    return this.engine.decode(stringOrBuffer)
+  decode (string) {
+    for (const char of string) {
+      if (this.alphabet && this.alphabet.indexOf(char) < 0) {
+        throw new Error(`invalid character '${char}' in '${string}'`)
+      }
+    }
+    return this.engine.decode(string)
   }
-
-  isImplemented () {
-    return this.engine
-  }
 }
 
 module.exports = Base

src/constants.js

@@ -5,24 +5,36 @@ 'use strict'
 const baseX = require('base-x')
-const base16 = require('./base16')
-const base32 = require('./base32')
-const base64 = require('./base64')
+const rfc4648 = require('./rfc4648')
 
+const identity = () => {
+  return {
+    encode: (data) => Buffer.from(data).toString(),
+    decode: (string) => Buffer.from(string)
+  }
+}
+
 // name, code, implementation, alphabet
 const constants = [
-  ['base1', '1', '', '1'],
-  ['base2', '0', baseX, '01'],
-  ['base8', '7', baseX, '01234567'],
+  ['identity', '\x00', identity, ''],
+  ['base2', '0', rfc4648(1), '01'],
+  ['base8', '7', rfc4648(3), '01234567'],
   ['base10', '9', baseX, '0123456789'],
-  ['base16', 'f', base16, '0123456789abcdef'],
-  ['base32', 'b', base32, 'abcdefghijklmnopqrstuvwxyz234567'],
-  ['base32pad', 'c', base32, 'abcdefghijklmnopqrstuvwxyz234567='],
-  ['base32hex', 'v', base32, '0123456789abcdefghijklmnopqrstuv'],
-  ['base32hexpad', 't', base32, '0123456789abcdefghijklmnopqrstuv='],
-  ['base32z', 'h', base32, 'ybndrfg8ejkmcpqxot1uwisza345h769'],
+  ['base16', 'f', rfc4648(4), '0123456789abcdef'],
+  ['base16upper', 'F', rfc4648(4), '0123456789ABCDEF'],
+  ['base32hex', 'v', rfc4648(5), '0123456789abcdefghijklmnopqrstuv'],
+  ['base32hexupper', 'V', rfc4648(5), '0123456789ABCDEFGHIJKLMNOPQRSTUV'],
+  ['base32hexpad', 't', rfc4648(5), '0123456789abcdefghijklmnopqrstuv='],
+  ['base32hexpadupper', 'T', rfc4648(5), '0123456789ABCDEFGHIJKLMNOPQRSTUV='],
+  ['base32', 'b', rfc4648(5), 'abcdefghijklmnopqrstuvwxyz234567'],
+  ['base32upper', 'B', rfc4648(5), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567'],
+  ['base32pad', 'c', rfc4648(5), 'abcdefghijklmnopqrstuvwxyz234567='],
+  ['base32padupper', 'C', rfc4648(5), 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567='],
+  ['base32z', 'h', rfc4648(5), 'ybndrfg8ejkmcpqxot1uwisza345h769'],
+  ['base36', 'k', baseX, '0123456789abcdefghijklmnopqrstuvwxyz'],
+  ['base36upper', 'K', baseX, '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'],
+  ['base58btc', 'z', baseX, '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'],
   ['base58flickr', 'Z', baseX, '123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ'],
-  ['base58btc', 'z', baseX, '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'],
-  ['base64', 'm', base64, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'],
-  ['base64pad', 'M', base64, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='],
-  ['base64url', 'u', base64, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_'],
-  ['base64urlpad', 'U', base64, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_=']
+  ['base64', 'm', rfc4648(6), 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'],
+  ['base64pad', 'M', rfc4648(6), 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='],
+  ['base64url', 'u', rfc4648(6), 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_'],
+  ['base64urlpad', 'U', rfc4648(6), 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_=']
 ]
@@ -41,4 +53,4 @@
 module.exports = {
-  names: names,
-  codes: codes
+  names,
+  codes
 }

src/index.js

 /**
  * Implementation of the [multibase](https://github.com/multiformats/multibase) specification.
+ *
  * @module Multibase
@@ -10,8 +11,3 @@ */
 
-exports = module.exports = multibase
-exports.encode = encode
-exports.decode = decode
-exports.isEncoded = isEncoded
-exports.names = Object.freeze(Object.keys(constants.names))
-exports.codes = Object.freeze(Object.keys(constants.codes))
+/** @typedef {import("./base")} Base */
 
@@ -23,4 +19,4 @@ /**
  * @param {Buffer} buf - The data to be prefixed with multibase.
- * @memberof Multibase
  * @returns {Buffer}
+ * @throws {Error} Will throw if the encoding is not supported
  */
@@ -31,8 +27,5 @@ function multibase (nameOrCode, buf) {
   }
-  const base = getBase(nameOrCode)
-  const codeBuf = Buffer.from(base.code)
-
-  const name = base.name
-  validEncode(name, buf)
-  return Buffer.concat([codeBuf, buf])
+  const enc = encoding(nameOrCode)
+  validEncode(enc.name, buf)
+  return Buffer.concat([enc.codeBuf, buf])
 }
@@ -46,9 +39,9 @@
  * @returns {Buffer}
- * @memberof Multibase
+ * @throws {Error} Will throw if the encoding is not supported
+ *
  */
 function encode (nameOrCode, buf) {
-  const base = getBase(nameOrCode)
-  const name = base.name
+  const enc = encoding(nameOrCode)
 
-  return multibase(name, Buffer.from(base.encode(buf)))
+  return Buffer.concat([enc.codeBuf, Buffer.from(enc.encode(buf))])
 }
@@ -60,21 +53,19 @@
  *
- * @param {Buffer|string} bufOrString
+ * @param {Buffer|string} data
  * @returns {Buffer}
- * @memberof Multibase
+ * @throws {Error} Will throw if the encoding is not supported
  *
  */
-function decode (bufOrString) {
-  if (Buffer.isBuffer(bufOrString)) {
-    bufOrString = bufOrString.toString()
+function decode (data) {
+  if (Buffer.isBuffer(data)) {
+    data = data.toString()
   }
+  const prefix = data[0]
 
-  const code = bufOrString.substring(0, 1)
-  bufOrString = bufOrString.substring(1, bufOrString.length)
-
-  if (typeof bufOrString === 'string') {
-    bufOrString = Buffer.from(bufOrString)
+  // Make all encodings case-insensitive except the ones that include upper and lower chars in the alphabet
+  if (['f', 'F', 'v', 'V', 't', 'T', 'b', 'B', 'c', 'C', 'h', 'k', 'K'].includes(prefix)) {
+    data = data.toLowerCase()
   }
-
-  const base = getBase(code)
-  return Buffer.from(base.decode(bufOrString.toString()))
+  const enc = encoding(data[0])
+  return Buffer.from(enc.decode(data.substring(1)))
 }
@@ -85,20 +76,18 @@
  *
- * @param {Buffer|string} bufOrString
+ * @param {Buffer|string} data
  * @returns {boolean}
- * @memberof Multibase
  */
-function isEncoded (bufOrString) {
-  if (Buffer.isBuffer(bufOrString)) {
-    bufOrString = bufOrString.toString()
+function isEncoded (data) {
+  if (Buffer.isBuffer(data)) {
+    data = data.toString()
   }
 
   // Ensure bufOrString is a string
-  if (Object.prototype.toString.call(bufOrString) !== '[object String]') {
+  if (Object.prototype.toString.call(data) !== '[object String]') {
     return false
   }
 
-  const code = bufOrString.substring(0, 1)
   try {
-    const base = getBase(code)
-    return base.name
+    const enc = encoding(data[0])
+    return enc.name
   } catch (err) {
@@ -110,28 +99,53 @@ return false
 /**
+ * Validate encoded data
+ *
  * @param {string} name
  * @param {Buffer} buf
- * @private
  * @returns {undefined}
+ * @throws {Error} Will throw if the encoding is not supported
  */
 function validEncode (name, buf) {
-  const base = getBase(name)
-  base.decode(buf.toString())
+  const enc = encoding(name)
+  enc.decode(buf.toString())
 }
 
-function getBase (nameOrCode) {
-  let base
-
+/**
+ * Get the encoding by name or code
+ *
+ * @param {string} nameOrCode
+ * @returns {Base}
+ * @throws {Error} Will throw if the encoding is not supported
+ */
+function encoding (nameOrCode) {
   if (constants.names[nameOrCode]) {
-    base = constants.names[nameOrCode]
+    return constants.names[nameOrCode]
   } else if (constants.codes[nameOrCode]) {
-    base = constants.codes[nameOrCode]
+    return constants.codes[nameOrCode]
   } else {
-    throw new Error('Unsupported encoding')
+    throw new Error(`Unsupported encoding: ${nameOrCode}`)
   }
+}
 
-  if (!base.isImplemented()) {
-    throw new Error('Base ' + nameOrCode + ' is not implemented yet')
+/**
+ * Get encoding from data
+ *
+ * @param {string|Buffer} data
+ * @returns {Base}
+ * @throws {Error} Will throw if the encoding is not supported
+ */
+function encodingFromData (data) {
+  if (Buffer.isBuffer(data)) {
+    data = data.toString()
   }
 
-  return base
+  return encoding(data[0])
 }
+
+exports = module.exports = multibase
+exports.encode = encode
+exports.decode = decode
+exports.isEncoded = isEncoded
+exports.encoding = encoding
+exports.encodingFromData = encodingFromData
+exports.names = Object.freeze(constants.names)
+exports.codes = Object.freeze(constants.codes)

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