@webex/common/dist/base64.js

Common utilities for Cisco Webex

"use strict";

var _Object$defineProperty = require("@babel/runtime-corejs2/core-js/object/define-property");
var _interopRequireDefault = require("@babel/runtime-corejs2/helpers/interopRequireDefault");
_Object$defineProperty(exports, "__esModule", {
  value: true
});
exports.decode = decode;
exports.default = void 0;
exports.encode = encode;
exports.fromBase64url = fromBase64url;
exports.toBase64Url = toBase64Url;
exports.validate = validate;
var _urlsafeBase = _interopRequireDefault(require("urlsafe-base64"));
var _safeBuffer = require("safe-buffer");
var _isBuffer = _interopRequireDefault(require("./isBuffer"));
/*!
 * Copyright (c) 2015-2020 Cisco Systems, Inc. See LICENSE file.
 */

/**
 * Converts a string from a base64url-encoded string
 * @param {string} str
 * @returns {string}
 */
function fromBase64url(str) {
  return _urlsafeBase.default.decode(str).toString();
}

/**
 * Converts a string to a base64url-encoded string. It also accepts a buffer
 * @param {string|buffer} str
 * @returns {string}
 */
function toBase64Url(str) {
  var buffer = str;
  if (!(0, _isBuffer.default)(buffer)) {
    buffer = _safeBuffer.Buffer.from(buffer);
  }
  return _urlsafeBase.default.encode(buffer);
}

/**
 * Converts a string to a base64url-encoded string. It also accepts a buffer
 * @param {string|buffer} str
 * @returns {string}
 */
function encode(str) {
  return toBase64Url(str);
}

/**
 * Converts a string from a base64url-encoded string
 * @param {string} str
 * @returns {string}
 */
function decode(str) {
  return fromBase64url(str);
}

/**
 * Indicates if the provided string is, in fact, a base64 string
 * @param {String} str
 * @returns {Boolean}
 */
function validate(str) {
  return _urlsafeBase.default.validate(str);
}
var _default = exports.default = {
  fromBase64url: fromBase64url,
  toBase64Url: toBase64Url,
  encode: encode,
  decode: decode,
  validate: validate
};
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