web2017-polyfills: Add WHATWG URL polyfill

Sourced from <https://github.com/Financial-Times/polyfill-library>.

Bug: T103379
Change-Id: Ia524d9d5ed884296007dae1caf9599c0c0b45c47

3 files changed, 538 insertions, 0 deletions

diff --git a/resources/lib/url/LICENSE.md b/resources/lib/url/LICENSE.md
new file mode 100644
index 000000000000..02815097f25d
--- /dev/null
+++ b/resources/lib/url/LICENSE.md
@@ -0,0 +1,9 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Financial Times
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/resources/lib/url/URL-toJSON.js b/resources/lib/url/URL-toJSON.js
new file mode 100644
index 000000000000..16ed36faa637
--- /dev/null
+++ b/resources/lib/url/URL-toJSON.js
@@ -0,0 +1,6 @@
+// eslint-disable-next-line no-unused-vars
+(function (global) {
+	global.URL.prototype.toJSON = function toJSON() {
+		return this.href;
+	}
+}(self));
diff --git a/resources/lib/url/URL.js b/resources/lib/url/URL.js
new file mode 100644
index 000000000000..078612101ee2
--- /dev/null
+++ b/resources/lib/url/URL.js
@@ -0,0 +1,523 @@
+/* global Symbol */
+// URL Polyfill
+// Draft specification: https://url.spec.whatwg.org
+
+// Notes:
+// - Primarily useful for parsing URLs and modifying query parameters
+// - Should work in IE8+ and everything more modern, with es5.js polyfills
+
+(function (global) {
+	'use strict';
+
+	function isSequence(o) {
+		if (!o) return false;
+		if ('Symbol' in global && 'iterator' in global.Symbol &&
+				typeof o[Symbol.iterator] === 'function') return true;
+		if (Array.isArray(o)) return true;
+		return false;
+	}
+
+	;(function() { // eslint-disable-line no-extra-semi
+
+		// Browsers may have:
+		// * No global URL object
+		// * URL with static methods only - may have a dummy constructor
+		// * URL with members except searchParams
+		// * Full URL API support
+		var origURL = global.URL;
+		var nativeURL;
+		try {
+			if (origURL) {
+				nativeURL = new global.URL('http://example.com');
+				if ('searchParams' in nativeURL) {
+					var url = new URL('http://example.com');
+					url.search = 'a=1&b=2';
+					if (url.href === 'http://example.com/?a=1&b=2') {
+						url.search = '';
+						if (url.href === 'http://example.com/') {
+							return;
+						}
+					}
+				}
+				if (!('href' in nativeURL)) {
+					nativeURL = undefined;
+				}
+				nativeURL = undefined;
+			}
+		// eslint-disable-next-line no-empty
+		} catch (_) {}
+
+		// NOTE: Doesn't do the encoding/decoding dance
+		function urlencoded_serialize(pairs) {
+			var output = '', first = true;
+			pairs.forEach(function (pair) {
+				var name = encodeURIComponent(pair.name);
+				var value = encodeURIComponent(pair.value);
+				if (!first) output += '&';
+				output += name + '=' + value;
+				first = false;
+			});
+			return output.replace(/%20/g, '+');
+		}
+
+		// NOTE: Doesn't do the encoding/decoding dance
+		function urlencoded_parse(input, isindex) {
+			var sequences = input.split('&');
+			if (isindex && sequences[0].indexOf('=') === -1)
+				sequences[0] = '=' + sequences[0];
+			var pairs = [];
+			sequences.forEach(function (bytes) {
+				if (bytes.length === 0) return;
+				var index = bytes.indexOf('=');
+				if (index !== -1) {
+					var name = bytes.substring(0, index);
+					var value = bytes.substring(index + 1);
+				} else {
+					name = bytes;
+					value = '';
+				}
+				name = name.replace(/\+/g, ' ');
+				value = value.replace(/\+/g, ' ');
+				pairs.push({ name: name, value: value });
+			});
+			var output = [];
+			pairs.forEach(function (pair) {
+				output.push({
+					name: decodeURIComponent(pair.name),
+					value: decodeURIComponent(pair.value)
+				});
+			});
+			return output;
+		}
+
+		function URLUtils(url) {
+			if (nativeURL)
+				return new origURL(url);
+			var anchor = document.createElement('a');
+			anchor.href = url;
+			return anchor;
+		}
+
+		function URLSearchParams(init) {
+			var $this = this;
+			this._list = [];
+
+			if (init === undefined || init === null) {
+				// no-op
+			} else if (init instanceof URLSearchParams) {
+				// In ES6 init would be a sequence, but special case for ES5.
+				this._list = urlencoded_parse(String(init));
+			} else if (typeof init === 'object' && isSequence(init)) {
+				Array.from(init).forEach(function(e) {
+					if (!isSequence(e)) throw TypeError();
+					var nv = Array.from(e);
+					if (nv.length !== 2) throw TypeError();
+					$this._list.push({name: String(nv[0]), value: String(nv[1])});
+				});
+			} else if (typeof init === 'object' && init) {
+				Object.keys(init).forEach(function(key) {
+					$this._list.push({name: String(key), value: String(init[key])});
+				});
+			} else {
+				init = String(init);
+				if (init.substring(0, 1) === '?')
+					init = init.substring(1);
+				this._list = urlencoded_parse(init);
+			}
+
+			this._url_object = null;
+			this._setList = function (list) { if (!updating) $this._list = list; };
+
+			var updating = false;
+			this._update_steps = function() {
+				if (updating) return;
+				updating = true;
+
+				if (!$this._url_object) return;
+
+				// Partial workaround for IE issue with 'about:'
+				if ($this._url_object.protocol === 'about:' &&
+						$this._url_object.pathname.indexOf('?') !== -1) {
+					$this._url_object.pathname = $this._url_object.pathname.split('?')[0];
+				}
+
+				$this._url_object.search = urlencoded_serialize($this._list);
+
+				updating = false;
+			};
+		}
+
+
+		Object.defineProperties(URLSearchParams.prototype, {
+			append: {
+				value: function (name, value) {
+					this._list.push({ name: name, value: value });
+					this._update_steps();
+				}, writable: true, enumerable: true, configurable: true
+			},
+
+			'delete': {
+				value: function (name) {
+					for (var i = 0; i < this._list.length;) {
+						if (this._list[i].name === name)
+							this._list.splice(i, 1);
+						else
+							++i;
+					}
+					this._update_steps();
+				}, writable: true, enumerable: true, configurable: true
+			},
+
+			get: {
+				value: function (name) {
+					for (var i = 0; i < this._list.length; ++i) {
+						if (this._list[i].name === name)
+							return this._list[i].value;
+					}
+					return null;
+				}, writable: true, enumerable: true, configurable: true
+			},
+
+			getAll: {
+				value: function (name) {
+					var result = [];
+					for (var i = 0; i < this._list.length; ++i) {
+						if (this._list[i].name === name)
+							result.push(this._list[i].value);
+					}
+					return result;
+				}, writable: true, enumerable: true, configurable: true
+			},
+
+			has: {
+				value: function (name) {
+					for (var i = 0; i < this._list.length; ++i) {
+						if (this._list[i].name === name)
+							return true;
+					}
+					return false;
+				}, writable: true, enumerable: true, configurable: true
+			},
+
+			set: {
+				value: function (name, value) {
+					var found = false;
+					for (var i = 0; i < this._list.length;) {
+						if (this._list[i].name === name) {
+							if (!found) {
+								this._list[i].value = value;
+								found = true;
+								++i;
+							} else {
+								this._list.splice(i, 1);
+							}
+						} else {
+							++i;
+						}
+					}
+
+					if (!found)
+						this._list.push({ name: name, value: value });
+
+					this._update_steps();
+				}, writable: true, enumerable: true, configurable: true
+			},
+
+			entries: {
+				value: function() { return new Iterator(this._list, 'key+value'); },
+				writable: true, enumerable: true, configurable: true
+			},
+
+			keys: {
+				value: function() { return new Iterator(this._list, 'key'); },
+				writable: true, enumerable: true, configurable: true
+			},
+
+			values: {
+				value: function() { return new Iterator(this._list, 'value'); },
+				writable: true, enumerable: true, configurable: true
+			},
+
+			forEach: {
+				value: function(callback) {
+					var thisArg = (arguments.length > 1) ? arguments[1] : undefined;
+					this._list.forEach(function(pair) {
+						callback.call(thisArg, pair.value, pair.name);
+					});
+
+				}, writable: true, enumerable: true, configurable: true
+			},
+
+			toString: {
+				value: function () {
+					return urlencoded_serialize(this._list);
+				}, writable: true, enumerable: false, configurable: true
+			},
+
+			sort: {
+				value: function sort() {
+					var entries = this.entries();
+					var entry = entries.next();
+					var keys = [];
+					var values = {};
+
+					while (!entry.done) {
+						var value = entry.value;
+						var key = value[0];
+						keys.push(key);
+						if (!(Object.prototype.hasOwnProperty.call(values, key))) {
+							values[key] = [];
+						}
+						values[key].push(value[1]);
+						entry = entries.next();
+					}
+
+					keys.sort();
+					for (var i = 0; i < keys.length; i++) {
+						this["delete"](keys[i]);
+					}
+					for (var j = 0; j < keys.length; j++) {
+						key = keys[j];
+						this.append(key, values[key].shift());
+					}
+				}
+			}
+		});
+
+		function Iterator(source, kind) {
+			var index = 0;
+			this.next = function() {
+				if (index >= source.length)
+					return {done: true, value: undefined};
+				var pair = source[index++];
+				return {done: false, value:
+								kind === 'key' ? pair.name :
+								kind === 'value' ? pair.value :
+								[pair.name, pair.value]};
+			};
+		}
+
+		if ('Symbol' in global && 'iterator' in global.Symbol) {
+			Object.defineProperty(URLSearchParams.prototype, global.Symbol.iterator, {
+				value: URLSearchParams.prototype.entries,
+				writable: true, enumerable: true, configurable: true});
+			Object.defineProperty(Iterator.prototype, global.Symbol.iterator, {
+				value: function() { return this; },
+				writable: true, enumerable: true, configurable: true});
+		}
+
+		function URL(url, base) {
+			if (!(this instanceof global.URL))
+				throw new TypeError("Failed to construct 'URL': Please use the 'new' operator.");
+
+			if (base) {
+				url = (function () {
+					if (nativeURL) return new origURL(url, base).href;
+					var iframe;
+					try {
+						var doc;
+						// Use another document/base tag/anchor for relative URL resolution, if possible
+						if (Object.prototype.toString.call(window.operamini) === "[object OperaMini]") {
+							iframe = document.createElement('iframe');
+							iframe.style.display = 'none';
+							document.documentElement.appendChild(iframe);
+							doc = iframe.contentWindow.document;
+						} else if (document.implementation && document.implementation.createHTMLDocument) {
+							doc = document.implementation.createHTMLDocument('');
+						} else if (document.implementation && document.implementation.createDocument) {
+							doc = document.implementation.createDocument('http://www.w3.org/1999/xhtml', 'html', null);
+							doc.documentElement.appendChild(doc.createElement('head'));
+							doc.documentElement.appendChild(doc.createElement('body'));
+						} else if (window.ActiveXObject) {
+							doc = new window.ActiveXObject('htmlfile');
+							doc.write('<head></head><body></body>');
+							doc.close();
+						}
+
+						if (!doc) throw Error('base not supported');
+
+						var baseTag = doc.createElement('base');
+						baseTag.href = base;
+						doc.getElementsByTagName('head')[0].appendChild(baseTag);
+						var anchor = doc.createElement('a');
+						anchor.href = url;
+						return anchor.href;
+					} finally {
+						if (iframe)
+							iframe.parentNode.removeChild(iframe);
+					}
+				}());
+			}
+
+			// An inner object implementing URLUtils (either a native URL
+			// object or an HTMLAnchorElement instance) is used to perform the
+			// URL algorithms. With full ES5 getter/setter support, return a
+			// regular object For IE8's limited getter/setter support, a
+			// different HTMLAnchorElement is returned with properties
+			// overridden
+
+			var instance = URLUtils(url || '');
+
+			// Detect for ES5 getter/setter support
+			// (an Object.defineProperties polyfill that doesn't support getters/setters may throw)
+			var ES5_GET_SET = (function() {
+				if (!('defineProperties' in Object)) return false;
+				try {
+					var obj = {};
+					Object.defineProperties(obj, { prop: { get: function () { return true; } } });
+					return obj.prop;
+				} catch (_) {
+					return false;
+				}
+			}());
+
+			var self = ES5_GET_SET ? this : document.createElement('a');
+
+
+
+			var query_object = new URLSearchParams(
+				instance.search ? instance.search.substring(1) : null);
+			query_object._url_object = self;
+
+			Object.defineProperties(self, {
+				href: {
+					get: function () { return instance.href; },
+					set: function (v) { instance.href = v; tidy_instance(); update_steps(); },
+					enumerable: true, configurable: true
+				},
+				origin: {
+					get: function () {
+						if (this.protocol.toLowerCase() === "data:") {
+							return null
+						}
+
+						if ('origin' in instance) return instance.origin;
+						return this.protocol + '//' + this.host;
+					},
+					enumerable: true, configurable: true
+				},
+				protocol: {
+					get: function () { return instance.protocol; },
+					set: function (v) { instance.protocol = v; },
+					enumerable: true, configurable: true
+				},
+				username: {
+					get: function () { return instance.username; },
+					set: function (v) { instance.username = v; },
+					enumerable: true, configurable: true
+				},
+				password: {
+					get: function () { return instance.password; },
+					set: function (v) { instance.password = v; },
+					enumerable: true, configurable: true
+				},
+				host: {
+					get: function () {
+						// IE returns default port in |host|
+						var re = {'http:': /:80$/, 'https:': /:443$/, 'ftp:': /:21$/}[instance.protocol];
+						return re ? instance.host.replace(re, '') : instance.host;
+					},
+					set: function (v) { instance.host = v; },
+					enumerable: true, configurable: true
+				},
+				hostname: {
+					get: function () { return instance.hostname; },
+					set: function (v) { instance.hostname = v; },
+					enumerable: true, configurable: true
+				},
+				port: {
+					get: function () { return instance.port; },
+					set: function (v) { instance.port = v; },
+					enumerable: true, configurable: true
+				},
+				pathname: {
+					get: function () {
+						// IE does not include leading '/' in |pathname|
+						if (instance.pathname.charAt(0) !== '/') return '/' + instance.pathname;
+						return instance.pathname;
+					},
+					set: function (v) { instance.pathname = v; },
+					enumerable: true, configurable: true
+				},
+				search: {
+					get: function () { return instance.search; },
+					set: function (v) {
+						if (instance.search === v) return;
+						instance.search = v; tidy_instance(); update_steps();
+					},
+					enumerable: true, configurable: true
+				},
+				searchParams: {
+					get: function () { return query_object; },
+					enumerable: true, configurable: true
+				},
+				hash: {
+					get: function () { return instance.hash; },
+					set: function (v) { instance.hash = v; tidy_instance(); },
+					enumerable: true, configurable: true
+				},
+				toString: {
+					value: function() { return instance.toString(); },
+					enumerable: false, configurable: true
+				},
+				valueOf: {
+					value: function() { return instance.valueOf(); },
+					enumerable: false, configurable: true
+				}
+			});
+
+			function tidy_instance() {
+				var href = instance.href.replace(/#$|\?$|\?(?=#)/g, '');
+				if (instance.href !== href)
+					instance.href = href;
+			}
+
+			function update_steps() {
+				query_object._setList(instance.search ? urlencoded_parse(instance.search.substring(1)) : []);
+				query_object._update_steps();
+			}
+
+			return self;
+		}
+
+		if (origURL) {
+			for (var i in origURL) {
+				if (Object.prototype.hasOwnProperty.call(origURL, i) && typeof origURL[i] === 'function')
+					URL[i] = origURL[i];
+			}
+		}
+
+		global.URL = URL;
+		global.URLSearchParams = URLSearchParams;
+	})();
+
+	// Patch native URLSearchParams constructor to handle sequences/records
+	// if necessary.
+	(function() {
+		if (new global.URLSearchParams([['a', 1]]).get('a') === '1' &&
+				new global.URLSearchParams({a: 1}).get('a') === '1')
+			return;
+		var orig = global.URLSearchParams;
+		global.URLSearchParams = function(init) {
+			if (init && typeof init === 'object' && isSequence(init)) {
+				var o = new orig();
+				Array.from(init).forEach(function (e) {
+					if (!isSequence(e)) throw TypeError();
+					var nv = Array.from(e);
+					if (nv.length !== 2) throw TypeError();
+					o.append(nv[0], nv[1]);
+				});
+				return o;
+			} else if (init && typeof init === 'object') {
+				o = new orig();
+				Object.keys(init).forEach(function(key) {
+					o.set(key, init[key]);
+				});
+				return o;
+			} else {
+				return new orig(init);
+			}
+		};
+	})();
+
+}(self));