cipherguard-mad/util/set/set.js

Cipherguard javascript application library for the open source password manager for teams

/**
 *
 * @signature `set(obj, path, value)`
 * @param  {Object} obj the object to use as the root for property based navigation
 * @param  {String} path a String of dot-separated keys, representing a path of properties
 * @param {*} the value to set
 *
 * A *path* is a dot-delimited sequence of zero or more property names, such that "foo.bar" means "the property
 * 'bar' of the object at the property 'foo' of the root."
 *
 * ```js
 * var set = require("cipherguard-mad/util/set/set");
 * var root = {a: {b: "foo"}};
 * set(root, "a.b", "bar");
 * console.log(root.a.b); // -> bar
 * ```
 */
function set(obj, name, value) {
  /*
   * The parts of the name we are looking up
   * `['App','Models','Recipe']`
   */
  const parts = typeof name !== 'undefined' ? (String(name)).replace(/\[/g, '.')
    .replace(/]/g, '').split('.') : [];
  const length = parts.length;
  let current, i;

  if (!length) {
    return obj;
  }

  current = obj;
  for (i = 0; i < length - 1; i++) {
    if (current[parts[i]] == undefined) {
      current[parts[i]] = {};
    }
    current = current[parts[i]];
  }
  current[parts[length - 1]] = value;
}

export default set;