twitst4tz

index.js (4037B)

---

 /*!
  * cookie
  * Copyright(c) 2012-2014 Roman Shtylman
  * Copyright(c) 2015 Douglas Christopher Wilson
  * MIT Licensed
  */
 
 'use strict';
 
 /**
  * Module exports.
  * @public
  */
 
 exports.parse = parse;
 exports.serialize = serialize;
 
 /**
  * Module variables.
  * @private
  */
 
 var decode = decodeURIComponent;
 var encode = encodeURIComponent;
 var pairSplitRegExp = /; */;
 
 /**
  * RegExp to match field-content in RFC 7230 sec 3.2
  *
  * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
  * field-vchar   = VCHAR / obs-text
  * obs-text      = %x80-FF
  */
 
 var fieldContentRegExp = /^[\u0009\u0020-\u007e\u0080-\u00ff]+$/;
 
 /**
  * Parse a cookie header.
  *
  * Parse the given cookie header string into an object
  * The object has the various cookies as keys(names) => values
  *
  * @param {string} str
  * @param {object} [options]
  * @return {object}
  * @public
  */
 
 function parse(str, options) {
   if (typeof str !== 'string') {
     throw new TypeError('argument str must be a string');
   }
 
   var obj = {}
   var opt = options || {};
   var pairs = str.split(pairSplitRegExp);
   var dec = opt.decode || decode;
 
   for (var i = 0; i < pairs.length; i++) {
     var pair = pairs[i];
     var eq_idx = pair.indexOf('=');
 
     // skip things that don't look like key=value
     if (eq_idx < 0) {
       continue;
     }
 
     var key = pair.substr(0, eq_idx).trim()
     var val = pair.substr(++eq_idx, pair.length).trim();
 
     // quoted values
     if ('"' == val[0]) {
       val = val.slice(1, -1);
     }
 
     // only assign once
     if (undefined == obj[key]) {
       obj[key] = tryDecode(val, dec);
     }
   }
 
   return obj;
 }
 
 /**
  * Serialize data into a cookie header.
  *
  * Serialize the a name value pair into a cookie string suitable for
  * http headers. An optional options object specified cookie parameters.
  *
  * serialize('foo', 'bar', { httpOnly: true })
  *   => "foo=bar; httpOnly"
  *
  * @param {string} name
  * @param {string} val
  * @param {object} [options]
  * @return {string}
  * @public
  */
 
 function serialize(name, val, options) {
   var opt = options || {};
   var enc = opt.encode || encode;
 
   if (typeof enc !== 'function') {
     throw new TypeError('option encode is invalid');
   }
 
   if (!fieldContentRegExp.test(name)) {
     throw new TypeError('argument name is invalid');
   }
 
   var value = enc(val);
 
   if (value && !fieldContentRegExp.test(value)) {
     throw new TypeError('argument val is invalid');
   }
 
   var str = name + '=' + value;
 
   if (null != opt.maxAge) {
     var maxAge = opt.maxAge - 0;
     if (isNaN(maxAge)) throw new Error('maxAge should be a Number');
     str += '; Max-Age=' + Math.floor(maxAge);
   }
 
   if (opt.domain) {
     if (!fieldContentRegExp.test(opt.domain)) {
       throw new TypeError('option domain is invalid');
     }
 
     str += '; Domain=' + opt.domain;
   }
 
   if (opt.path) {
     if (!fieldContentRegExp.test(opt.path)) {
       throw new TypeError('option path is invalid');
     }
 
     str += '; Path=' + opt.path;
   }
 
   if (opt.expires) {
     if (typeof opt.expires.toUTCString !== 'function') {
       throw new TypeError('option expires is invalid');
     }
 
     str += '; Expires=' + opt.expires.toUTCString();
   }
 
   if (opt.httpOnly) {
     str += '; HttpOnly';
   }
 
   if (opt.secure) {
     str += '; Secure';
   }
 
   if (opt.sameSite) {
     var sameSite = typeof opt.sameSite === 'string'
       ? opt.sameSite.toLowerCase() : opt.sameSite;
 
     switch (sameSite) {
       case true:
         str += '; SameSite=Strict';
         break;
       case 'lax':
         str += '; SameSite=Lax';
         break;
       case 'strict':
         str += '; SameSite=Strict';
         break;
       case 'none':
         str += '; SameSite=None';
         break;
       default:
         throw new TypeError('option sameSite is invalid');
     }
   }
 
   return str;
 }
 
 /**
  * Try decoding a string using a decoding function.
  *
  * @param {string} str
  * @param {function} decode
  * @private
  */
 
 function tryDecode(str, decode) {
   try {
     return decode(str);
   } catch (e) {
     return str;
   }
 }