Episode 008

[ahJ4s|1723414164027|Sun Aug 11 2024 15:09:24 GMT-0700 (Pacific Daylight Time)|code]

if (typeof window != "object")
  window = {};

window.cookieUtilities = (function() { return ({

closures: {},

assertCookies:
function assertCookies()
  {
    if (typeof document != "object")
      throw new Error("document is not an object");
    if (document === null)
      throw new Error("document is null");
    if (typeof document.cookie != "string")
      throw new Error("document.cookie is not a string");
  },

deleteCookie:
function deleteCookie(name)
  {
    var fetched_value;
    var now_ms;
    var one_minute_ago;

    now_ms = (new Date).getTime();
    one_minute_ago = new Date(now_ms - 60000);
    this.setCookie(name, "", one_minute_ago);
    /* Test */
    fetched_value = this.getCookie(name);
    if (typeof fetched_value == "undefined")
      return true;
    return false;
  },

findMaximumCookieCount:
function findMaximumCookieCount(test_cookie_prefix, tests)
  {
    var clean_ups;
    var i;
    var max;

    if (typeof test_cookie_prefix == "undefined" || test_cookie_prefix === null)
      test_cookie_prefix = "t";
    if (typeof tests == "undefined" || tests === null)
      tests = 100;
    if (typeof tests != "number" || !isFinite(tests) || tests < 1 || tests % 1 != 0)
      throw new Error("Count of tests must be a positive integer, if specified");
    clean_ups = 0;
    max = 0;
    /* Gauss knows how slow this is! */
    for (i = 0; i < tests; ++i)
      {
        if (this.setCookie(test_cookie_prefix + i) == false)
          break;
        ++clean_ups;
        for (j = 0; j < i; ++j)
          {
            if (this.getCookie(test_cookie_prefix + j) != "")
              break;
          }
        if (j != i)
          break;
        ++max;
      }
    for (i = 0; i < clean_ups; ++i)
      this.deleteCookie(test_cookie_prefix + i);
    return max;
  },

findMaximumLengthForCookieValues:
function findMaximumLengthForCookieValues(test_cookie_name)
  {
    var cookie;
    var fetched;
    var i;
    var test;

    if (typeof test_cookie_name == "undefined" || test_cookie_name === null)
      test_cookie_name = "t";
    for ((i = 0), (test = "t"); this.setCookie(test_cookie_name, test); (i += 1), (test += "t"))
      true;
    this.deleteCookie(test_cookie_name);
    return i;
  },

getCookie:
function getCookie(name)
  {
    var cookies;
    var index;

    cookies = this.getCookies();
    index = cookies.map[name];
    if (typeof index == "undefined")
      return undefined;
    return cookies.values[index];
  },

getCookies:
function getCookies()
  {
    var cookies;
    var crumbs;
    var i;
    var map;
    var names;
    var result;
    var values;

    this.assertCookies();
    map = {};
    names = [];
    values = [];
    result =
      {
        map: map,
        names: names,
        values: values
      };
    cookies = document.cookie;
    if (cookies == "")
      return result;
    cookies = cookies.replace(/;\s+/g, ";").split(";");
    for (i = 0; i < cookies.length; ++i)
      {
        crumbs = cookies[i].split("=");
        names.push(crumbs.shift());
        values.push(crumbs.join("="));
        map[names[i]] = i;
      }
    return result;
  },

makeClosure:
function makeClosure(func)
  {
    var _;

    _ = this;
    _.closures[func] = closure;
    func = _[func];
    return closure;
    function closure()
      {
        return func.apply(_, arguments);
      }
  },

setCookie:
function setCookie(name, value, expires, path)
  {
    var cookie;
    var fetched_value;
    var parts;

    if (typeof name == "undefined" || name === null || name == "")
      throw new Error("Cookie name must be a non-empty string");
    name = "" + name;
    if (typeof value == "undefined" || value === null)
      value = "";
      else
      value = "" + value;
    parts = [ name + "=" + value ];
    if (typeof expires != "undefined" && expires !== null && expires != "")
      parts.push("expires=" + expires);
    if (typeof path != "undefined" && path !== null && expires != "")
      parts.push("path=" + path);
    cookie = parts.join("; ");
    this.assertCookies();
    document.cookie = cookie;
    /* Test */
    fetched_value = this.getCookie(name);
    if (fetched_value !== value)
      return false;
    return true;
  },

setup:
function setup()
  {
    return {
        assertCookies: this.assertCookies,
        deleteCookie: this.makeClosure("deleteCookie"),
        findMaximumCookieCount: this.makeClosure("findMaximumCookieCount"),
        findMaximumLengthForCookieValues: this.makeClosure("findMaximumLengthForCookieValues"),
        getCookie: this.makeClosure("getCookie"),
        getCookies: this.makeClosure("getCookies"),
        setCookie: this.makeClosure("setCookie")
      };
  }

}).setup(); })();

[ahJ4s|1723414164034|Sun Aug 11 2024 15:09:24 GMT-0700 (Pacific Daylight Time)|value]

[object Object]

[ahJ4s|1723415623703|Sun Aug 11 2024 15:33:43 GMT-0700 (Pacific Daylight Time)|code]

JSON.stringify(
    cookieUtilities.getCookies(),
    null,
    2
  );

[ahJ4s|1723415623748|Sun Aug 11 2024 15:33:43 GMT-0700 (Pacific Daylight Time)|value]

{
  "map": {},
  "names": [],
  "values": []
}

[ahJ4s|1723415664395|Sun Aug 11 2024 15:34:24 GMT-0700 (Pacific Daylight Time)|code]

cookieUtilities.setCookie("test", 42);

[ahJ4s|1723415664403|Sun Aug 11 2024 15:34:24 GMT-0700 (Pacific Daylight Time)|value]

true

[ahJ4s|1723415673847|Sun Aug 11 2024 15:34:33 GMT-0700 (Pacific Daylight Time)|code]

JSON.stringify(
    cookieUtilities.getCookies(),
    null,
    2
  );

[ahJ4s|1723415673849|Sun Aug 11 2024 15:34:33 GMT-0700 (Pacific Daylight Time)|value]

{
  "map": {
    "test": 0
  },
  "names": [
    "test"
  ],
  "values": [
    "42"
  ]
}

[ahJ4s|1723415715430|Sun Aug 11 2024 15:35:15 GMT-0700 (Pacific Daylight Time)|code]

cookieUtilities.findMaximumLengthForCookieValues();

[ahJ4s|1723415724406|Sun Aug 11 2024 15:35:24 GMT-0700 (Pacific Daylight Time)|value]

4095

[ahJ4s|1723415764869|Sun Aug 11 2024 15:36:04 GMT-0700 (Pacific Daylight Time)|code]

cookieUtilities.findMaximumCookieCount();

[ahJ4s|1723415775277|Sun Aug 11 2024 15:36:15 GMT-0700 (Pacific Daylight Time)|value]

100

[ahJ4s|1723415858900|Sun Aug 11 2024 15:37:38 GMT-0700 (Pacific Daylight Time)|code]

JSON.stringify(
    cookieUtilities.getCookies(),
    null,
    2
  );

[ahJ4s|1723415858905|Sun Aug 11 2024 15:37:38 GMT-0700 (Pacific Daylight Time)|value]

{
  "map": {
    "test": 0
  },
  "names": [
    "test"
  ],
  "values": [
    "42"
  ]
}

[ahJ4s|1723415878065|Sun Aug 11 2024 15:37:58 GMT-0700 (Pacific Daylight Time)|code]

cookieUtilities.deleteCookie("test");

[ahJ4s|1723415878074|Sun Aug 11 2024 15:37:58 GMT-0700 (Pacific Daylight Time)|value]

true

[ahJ4s|1723415890043|Sun Aug 11 2024 15:38:10 GMT-0700 (Pacific Daylight Time)|code]

JSON.stringify(
    cookieUtilities.getCookies(),
    null,
    2
  );

[ahJ4s|1723415890044|Sun Aug 11 2024 15:38:10 GMT-0700 (Pacific Daylight Time)|value]

{
  "map": {},
  "names": [],
  "values": []
}