Base64

jasong — Mon, 05 Mar 2018 02:14:18 GMT

Is there a built in method for base64 conversion (both to and from?) If so, what is it? Or do I need to create my own from some of the many open source resources?

Base64

abalousek — Tue, 04 Dec 2012 22:26:15 GMT

There are 'built in' Base64 encode/decode functions ... but they are not YET exposed in a resource library. I have requested that they be exposed in subsequent releases.

Re: Base64

arunkumar1 — Thu, 10 Mar 2016 07:22:07 GMT

I could see the following functions in the Snippets tab: base64EncodeString, base64EncodeByte, base64DecodeString, base64DecodeByte.

However, I get the following error when I run service using these functions

ReferenceError: "base64EncodeString" is not defined.

Regards

Arunkumar D

Re: Base64

ptc-6292103 — Fri, 11 Mar 2016 17:27:16 GMT

The Base64 methods were available in older versions of Thingworx (I think before version 5). In version 5 the engineers didn't expose it, but the references in the Snippets were still there. I think the Base64 methods are made available again in maybe version 6.0.4, but I haven't looked.

I have a Service I use, instead of using the built-in functions. It's invoked like this:

var b64_string = Things.Convert.toBase64({ from : "some string" });

//
//  Convert.toBase64.js
//
//  [Conversion Service]
//
//  OUTPUT
// STRING
//
//  INPUT
// * from : STRING
//
// jshint strict:false
// jshint bitwise:false
/* global from */
/* exported result */
var Base64 = {
  _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
  encode: function(e) {
  var result = "";
  var byte1, byte2, byte3, char1, char2, char3, char4;
  var f = 0;
  e = Base64._utf8_encode(e);
  while (f < e.length) {
  byte1 = e.charCodeAt(f++);
  byte2 = e.charCodeAt(f++);
  byte3 = e.charCodeAt(f++);
  char1 = byte1 >> 2;
  char2 = (byte1 & 3) << 4 | byte2 >> 4;
  char3 = (byte2 & 15) << 2 | byte3 >> 6;
  char4 = byte3 & 63;
  if (isNaN(byte2)) {
  char3 = char4 = 64;
  } else if (isNaN(byte3)) {
  char4 = 64;
  }
  result = result + this._keyStr.charAt(char1) + this._keyStr.charAt(char2) + this._keyStr.charAt(char3) + this._keyStr.charAt(char4);
  }
  return result;
  },
  _utf8_encode: function(string) {
  string = string.replace(/\r\n/g, "\n");
  var result = "";
  for (var index = 0; index < string.length; index++) {
  var char = string.charCodeAt(index);
  if (char < 128) {
  result += String.fromCharCode(char);
  } else if (char > 127 && char < 2048) {
  result += String.fromCharCode(char >> 6 | 192);
  result += String.fromCharCode(char & 63 | 128);
  } else {
  result += String.fromCharCode(char >> 12 | 224);
  result += String.fromCharCode(char >> 6 & 63 | 128);
  result += String.fromCharCode(char & 63 | 128);
  }
  }
  return result;
  }
};
var result = Base64.encode(from);

And, the complementary Service, called like:
var some_string = Things.Convert.toString_fromBase64({ from : "c29tZSBzdHJpbmc=" });

//
//  Convert.toString_fromBase64.js
//
//  [Conversion Service]
//
//  OUTPUT
// STRING
//
//  INPUT
// * from : Base 64 encoded STRING
//
// jshint strict:false
// jshint bitwise:false
/* global from */
/* exported result */
var Base64 = {
  _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
  decode: function(string) {
  var result = "";
  var byte1, byte2, byte3, char1, char2, char3, char4;
  var f = 0;
  string = string.replace(/[^A-Za-z0-9\+\/\=]/g, "");
  while (f < string.length) {
  char1 = this._keyStr.indexOf(string.charAt(f++));
  char2 = this._keyStr.indexOf(string.charAt(f++));
  char3 = this._keyStr.indexOf(string.charAt(f++));
  char4 = this._keyStr.indexOf(string.charAt(f++));
  byte1 = char1 << 2 | char2 >> 4;
  byte2 = (char2 & 15) << 4 | char3 >> 2;
  byte3 = (char3 & 3) << 6 | char4;
  result = result + String.fromCharCode(byte1);
  if (char3 !== 64) {
  result = result + String.fromCharCode(byte2);
  }
  if (char4 !== 64) {
  result = result + String.fromCharCode(byte3);
  }
  }
  result = Base64._utf8_decode(result);
  return result;
  },
  _utf8_decode: function(string) {
  var result = "";
  var index = 0;
  var char1 = 0;
  var char2 = 0;
  var char3 = 0;
  while (index < string.length) {
  char1 = string.charCodeAt(index);
  if (char1 < 128) {
  result += String.fromCharCode(char1);
  index++;
  } else if (char1 > 191 && char1 < 224) {
  char2 = string.charCodeAt(index + 1);
  result += String.fromCharCode((char1 & 31) << 6 | char2 & 63);
  index += 2;
  } else {
  char2 = string.charCodeAt(index + 1);
  char3 = string.charCodeAt(index + 2);
  result += String.fromCharCode((char1 & 15) << 12 | (char2 & 63) << 6 | char3 & 63);
  index += 3;
  }
  }
  return result;
  }
};
var result = Base64.decode(from);

topic Re: Base64 in ThingWorx Developers

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