@dioxide-js/silas/dist/esm/node_modules/base32-decode/index.mjs

RPC utility for Silas

var base32Decode;
var hasRequiredBase32Decode;

function requireBase32Decode () {
	if (hasRequiredBase32Decode) return base32Decode;
	hasRequiredBase32Decode = 1;
	var RFC4648 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
	var RFC4648_HEX = '0123456789ABCDEFGHIJKLMNOPQRSTUV';
	var CROCKFORD = '0123456789ABCDEFGHJKMNPQRSTVWXYZ';

	function readChar (alphabet, char) {
	  var idx = alphabet.indexOf(char);

	  if (idx === -1) {
	    throw new Error('Invalid character found: ' + char)
	  }

	  return idx
	}

	base32Decode = function base32Decode (input, variant) {
	  var alphabet;

	  switch (variant) {
	    case 'RFC3548':
	    case 'RFC4648':
	      alphabet = RFC4648;
	      input = input.replace(/=+$/, '');
	      break
	    case 'RFC4648-HEX':
	      alphabet = RFC4648_HEX;
	      input = input.replace(/=+$/, '');
	      break
	    case 'Crockford':
	      alphabet = CROCKFORD;
	      input = input.toUpperCase().replace(/O/g, '0').replace(/[IL]/g, '1');
	      break
	    default:
	      throw new Error('Unknown base32 variant: ' + variant)
	  }

	  var length = input.length;

	  var bits = 0;
	  var value = 0;

	  var index = 0;
	  var output = new Uint8Array((length * 5 / 8) | 0);

	  for (var i = 0; i < length; i++) {
	    value = (value << 5) | readChar(alphabet, input[i]);
	    bits += 5;

	    if (bits >= 8) {
	      output[index++] = (value >>> (bits - 8)) & 255;
	      bits -= 8;
	    }
	  }

	  return output.buffer
	};
	return base32Decode;
}

export { requireBase32Decode as __require };
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