1.0.5

license

@@ -1,4 +1,5 @@
 Copyright (c) 2022 Lossless GmbH (hello@lossless.com)
+Copyright 2011 Jon Leighton
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

npmextra.json

@@ -3,10 +3,10 @@
     "projectType": "npm",
     "module": {
       "githost": "gitlab.com",
-      "gitscope": "pushrocks",
+      "gitscope": "push.rocks",
       "gitrepo": "smartbuffer",
       "description": "handle ArrayBufferLike structures",
-      "npmPackagename": "@pushrocks/smartbuffer",
+      "npmPackagename": "@push.rocks/smartbuffer",
       "license": "MIT",
       "projectDomain": "push.rocks"
     }

package.json

@@ -1,6 +1,6 @@
 {
-  "name": "@pushrocks/smartbuffer",
+  "name": "@push.rocks/smartbuffer",
-  "version": "1.0.2",
+  "version": "1.0.5",
   "private": false,
   "description": "handle ArrayBufferLike structures",
   "main": "dist_ts/index.js",
@@ -10,18 +10,16 @@
   "license": "MIT",
   "scripts": {
     "test": "(tstest test/ --web)",
-    "build": "(tsbuild --web --allowimplicitany)",
+    "build": "(tsbuild --web --allowimplicitany)"
-    "buildDocs": "(tsdoc)"
   },
   "devDependencies": {
-    "@gitzone/tsbuild": "^2.1.25",
+    "@git.zone/tsbuild": "^2.1.25",
-    "@gitzone/tsbundle": "^2.0.5",
+    "@git.zone/tsbundle": "^2.0.5",
-    "@gitzone/tsdoc": "^1.1.10",
+    "@git.zone/tsrun": "^1.2.46",
-    "@gitzone/tstest": "^1.0.44",
+    "@git.zone/tstest": "^1.0.44",
-    "@pushrocks/tapbundle": "^5.0.3",
+    "@push.rocks/tapbundle": "^5.0.8",
-    "@types/node": "^17.0.41"
+    "@types/node": "^20.11.20"
   },
-  "dependencies": {},
   "browserslist": [
     "last 1 chrome versions"
   ],

ts/00_commitinfo_data.ts

@@ -2,7 +2,7 @@
  * autocreated commitinfo by @pushrocks/commitinfo
  */
 export const commitinfo = {
-  name: '@pushrocks/smartbuffer',
+  name: '@push.rocks/smartbuffer',
-  version: '1.0.2',
+  version: '1.0.5',
   description: 'handle ArrayBufferLike structures'
 }

ts/index.ts

@@ -1,3 +1,67 @@
 import * as plugins from './smartbuffer.plugins.js';
 
-export let demoExport = 'Hi there! :) This is an exported string';
+export function arrayBufferToBase64(arrayBuffer: ArrayBufferLike | Buffer): string {
+  var base64    = ''
+  var encodings = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+
+  var bytes         = new Uint8Array(arrayBuffer)
+  var byteLength    = bytes.byteLength
+  var byteRemainder = byteLength % 3
+  var mainLength    = byteLength - byteRemainder
+
+  var a, b, c, d
+  var chunk
+
+  // Main loop deals with bytes in chunks of 3
+  for (var i = 0; i < mainLength; i = i + 3) {
+    // Combine the three bytes into a single integer
+    chunk = (bytes[i] << 16) | (bytes[i + 1] << 8) | bytes[i + 2]
+
+    // Use bitmasks to extract 6-bit segments from the triplet
+    a = (chunk & 16515072) >> 18 // 16515072 = (2^6 - 1) << 18
+    b = (chunk & 258048)   >> 12 // 258048   = (2^6 - 1) << 12
+    c = (chunk & 4032)     >>  6 // 4032     = (2^6 - 1) << 6
+    d = chunk & 63               // 63       = 2^6 - 1
+
+    // Convert the raw binary segments to the appropriate ASCII encoding
+    base64 += encodings[a] + encodings[b] + encodings[c] + encodings[d]
+  }
+
+  // Deal with the remaining bytes and padding
+  if (byteRemainder == 1) {
+    chunk = bytes[mainLength]
+
+    a = (chunk & 252) >> 2 // 252 = (2^6 - 1) << 2
+
+    // Set the 4 least significant bits to zero
+    b = (chunk & 3)   << 4 // 3   = 2^2 - 1
+
+    base64 += encodings[a] + encodings[b] + '=='
+  } else if (byteRemainder == 2) {
+    chunk = (bytes[mainLength] << 8) | bytes[mainLength + 1]
+
+    a = (chunk & 64512) >> 10 // 64512 = (2^6 - 1) << 10
+    b = (chunk & 1008)  >>  4 // 1008  = (2^6 - 1) << 4
+
+    // Set the 2 least significant bits to zero
+    c = (chunk & 15)    <<  2 // 15    = 2^4 - 1
+
+    base64 += encodings[a] + encodings[b] + encodings[c] + '='
+  }
+  
+  return base64
+}
+
+export function base64ToArrayBuffer(base64: string): Uint8Array {
+  const binaryString =  window.atob(base64);
+  const arrayLength = binaryString.length;
+  const arrayBuffer = new Uint8Array( arrayLength );
+  for (var i = 0; i < arrayLength; i++)        {
+      arrayBuffer[i] = binaryString.charCodeAt(i);
+  }
+  return arrayBuffer;
+}
+
+export function isArrayBufferLike(obj: any): obj is ArrayBufferLike {
+  return obj && typeof obj.byteLength === 'number';
+}

tsconfig.json

@@ -3,7 +3,12 @@
     "experimentalDecorators": true,
     "useDefineForClassFields": false,
     "target": "ES2022",
-    "module": "ES2022",
+    "module": "NodeNext",
-    "moduleResolution": "nodenext"
+    "moduleResolution": "NodeNext",
-  }
+    "esModuleInterop": true,
+    "verbatimModuleSyntax": true
+  },
+  "exclude": [
+    "dist_*/**/*.d.ts"
+  ]
 }