463 lines
13 KiB
JavaScript
463 lines
13 KiB
JavaScript
/**
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* The {@link RegExp} pattern of the authority of a URI.
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*
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* @private
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* @type {string}
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*/
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const _URI_AUTHORITY_PATTERN = '(//[^/?#]+)';
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/**
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* The {@link RegExp} pattern of the path of a URI.
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*
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* @private
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* @type {string}
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*/
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const _URI_PATH_PATTERN = '([^?#]*)';
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/**
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* The {@link RegExp} pattern of the protocol of a URI.
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*
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* @private
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* @type {string}
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*/
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const _URI_PROTOCOL_PATTERN = '([a-z][a-z0-9\\.\\+-]*:)';
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/**
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* Fixes the hier-part of a specific URI (string) so that the URI is well-known.
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* For example, certain Jitsi Meet deployments are not conventional but it is
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* possible to translate their URLs into conventional.
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*
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* @param {string} uri - The URI (string) to fix the hier-part of.
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* @private
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* @returns {string}
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*/
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function _fixURIStringHierPart(uri) {
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// Rewrite the specified URL in order to handle special cases such as
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// hipchat.com and enso.me which do not follow the common pattern of most
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// Jitsi Meet deployments.
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// hipchat.com
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let regex
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= new RegExp(
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`^${_URI_PROTOCOL_PATTERN}//hipchat\\.com/video/call/`,
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'gi');
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let match = regex.exec(uri);
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if (!match) {
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// enso.me
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regex
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= new RegExp(
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`^${_URI_PROTOCOL_PATTERN}//enso\\.me/(?:call|meeting)/`,
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'gi');
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match = regex.exec(uri);
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}
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if (match) {
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/* eslint-disable no-param-reassign, prefer-template */
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uri
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= match[1] /* protocol */
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+ '//enso.hipchat.me/'
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+ uri.substring(regex.lastIndex); /* room (name) */
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/* eslint-enable no-param-reassign, prefer-template */
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}
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return uri;
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}
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/**
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* Fixes the scheme part of a specific URI (string) so that it contains a
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* well-known scheme such as HTTP(S). For example, the mobile app implements an
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* app-specific URI scheme in addition to Universal Links. The app-specific
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* scheme may precede or replace the well-known scheme. In such a case, dealing
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* with the app-specific scheme only complicates the logic and it is simpler to
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* get rid of it (by translating the app-specific scheme into a well-known
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* scheme).
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*
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* @param {string} uri - The URI (string) to fix the scheme of.
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* @private
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* @returns {string}
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*/
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function _fixURIStringScheme(uri: string) {
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const regex = new RegExp(`^${_URI_PROTOCOL_PATTERN}+`, 'gi');
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const match = regex.exec(uri);
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if (match) {
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// As an implementation convenience, pick up the last scheme and make
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// sure that it is a well-known one.
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let protocol = match[match.length - 1].toLowerCase();
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if (protocol !== 'http:' && protocol !== 'https:') {
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protocol = 'https:';
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}
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/* eslint-disable no-param-reassign */
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uri = uri.substring(regex.lastIndex);
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if (uri.startsWith('//')) {
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// The specified URL was not a room name only, it contained an
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// authority.
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uri = protocol + uri;
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}
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/* eslint-enable no-param-reassign */
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}
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return uri;
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}
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/**
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* Gets the (Web application) context root defined by a specific location (URI).
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*
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* @param {Object} location - The location (URI) which defines the (Web
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* application) context root.
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* @public
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* @returns {string} - The (Web application) context root defined by the
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* specified {@code location} (URI).
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*/
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export function getLocationContextRoot(location: Object) {
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const pathname = location.pathname;
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const contextRootEndIndex = pathname.lastIndexOf('/');
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return (
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contextRootEndIndex === -1
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? '/'
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: pathname.substring(0, contextRootEndIndex + 1));
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}
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/**
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* Constructs a new {@code Array} with URL parameter {@code String}s out of a
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* specific {@code Object}.
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*
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* @param {Object} obj - The {@code Object} to turn into URL parameter
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* {@code String}s.
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* @returns {Array<string>} The {@code Array} with URL parameter {@code String}s
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* constructed out of the specified {@code obj}.
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*/
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function _objectToURLParamsArray(obj = {}) {
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const params = [];
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for (const key in obj) { // eslint-disable-line guard-for-in
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try {
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params.push(
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`${key}=${encodeURIComponent(JSON.stringify(obj[key]))}`);
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} catch (e) {
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console.warn(`Error encoding ${key}: ${e}`);
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}
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}
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return params;
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}
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/**
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* Parses a specific URI string into an object with the well-known properties of
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* the {@link Location} and/or {@link URL} interfaces implemented by Web
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* browsers. The parsing attempts to be in accord with IETF's RFC 3986.
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*
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* @param {string} str - The URI string to parse.
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* @public
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* @returns {{
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* hash: string,
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* host: (string|undefined),
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* hostname: (string|undefined),
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* pathname: string,
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* port: (string|undefined),
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* protocol: (string|undefined),
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* search: string
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* }}
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*/
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export function parseStandardURIString(str: string) {
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/* eslint-disable no-param-reassign */
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const obj = {
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toString: _standardURIToString
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};
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let regex;
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let match;
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// protocol
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regex = new RegExp(`^${_URI_PROTOCOL_PATTERN}`, 'gi');
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match = regex.exec(str);
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if (match) {
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obj.protocol = match[1].toLowerCase();
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str = str.substring(regex.lastIndex);
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}
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// authority
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regex = new RegExp(`^${_URI_AUTHORITY_PATTERN}`, 'gi');
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match = regex.exec(str);
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if (match) {
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let authority = match[1].substring(/* // */ 2);
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str = str.substring(regex.lastIndex);
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// userinfo
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const userinfoEndIndex = authority.indexOf('@');
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if (userinfoEndIndex !== -1) {
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authority = authority.substring(userinfoEndIndex + 1);
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}
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obj.host = authority;
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// port
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const portBeginIndex = authority.lastIndexOf(':');
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if (portBeginIndex !== -1) {
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obj.port = authority.substring(portBeginIndex + 1);
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authority = authority.substring(0, portBeginIndex);
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}
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// hostname
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obj.hostname = authority;
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}
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// pathname
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regex = new RegExp(`^${_URI_PATH_PATTERN}`, 'gi');
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match = regex.exec(str);
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let pathname;
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if (match) {
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pathname = match[1];
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str = str.substring(regex.lastIndex);
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}
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if (pathname) {
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pathname.startsWith('/') || (pathname = `/${pathname}`);
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} else {
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pathname = '/';
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}
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obj.pathname = pathname;
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// query
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if (str.startsWith('?')) {
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let hashBeginIndex = str.indexOf('#', 1);
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if (hashBeginIndex === -1) {
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hashBeginIndex = str.length;
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}
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obj.search = str.substring(0, hashBeginIndex);
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str = str.substring(hashBeginIndex);
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} else {
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obj.search = ''; // Google Chrome
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}
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// fragment
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obj.hash = str.startsWith('#') ? str : '';
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/* eslint-enable no-param-reassign */
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return obj;
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}
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/**
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* Parses a specific URI which (supposedly) references a Jitsi Meet resource
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* (location).
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*
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* @param {(string|undefined)} uri - The URI to parse which (supposedly)
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* references a Jitsi Meet resource (location).
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* @public
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* @returns {{
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* room: (string|undefined)
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* }}
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*/
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export function parseURIString(uri: ?string) {
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if (typeof uri !== 'string') {
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return undefined;
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}
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const obj
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= parseStandardURIString(
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_fixURIStringHierPart(_fixURIStringScheme(uri)));
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// Add the properties that are specific to a Jitsi Meet resource (location)
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// such as contextRoot, room:
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// contextRoot
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obj.contextRoot = getLocationContextRoot(obj);
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// The room (name) is the last component of pathname.
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const { pathname } = obj;
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obj.room = pathname.substring(pathname.lastIndexOf('/') + 1) || undefined;
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return obj;
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}
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/**
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* Implements {@code href} and {@code toString} for the {@code Object} returned
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* by {@link #parseStandardURIString}.
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*
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* @param {Object} [thiz] - An {@code Object} returned by
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* {@code #parseStandardURIString} if any; otherwise, it is presumed that the
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* function is invoked on such an instance.
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* @returns {string}
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*/
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function _standardURIToString(thiz: ?Object) {
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// eslint-disable-next-line no-invalid-this
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const { hash, host, pathname, protocol, search } = thiz || this;
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let str = '';
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protocol && (str += protocol);
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// TODO userinfo
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host && (str += `//${host}`);
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str += pathname || '/';
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search && (str += search);
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hash && (str += hash);
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return str;
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}
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/**
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* Attempts to return a {@code String} representation of a specific
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* {@code Object} which is supposed to represent a URL. Obviously, if a
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* {@code String} is specified, it is returned. If a {@code URL} is specified,
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* its {@code URL#href} is returned. Additionally, an {@code Object} similar to
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* the one accepted by the constructor of Web's ExternalAPI is supported on both
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* mobile/React Native and Web/React.
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*
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* @param {string|Object} obj - The URL to return a {@code String}
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* representation of.
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* @returns {string} - A {@code String} representation of the specified
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* {@code obj} which is supposed to represent a URL.
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*/
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export function toURLString(obj: ?(string | Object)): ?string {
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let str;
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switch (typeof obj) {
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case 'object':
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if (obj) {
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if (obj instanceof URL) {
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str = obj.href;
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} else {
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str = urlObjectToString(obj);
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}
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}
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break;
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case 'string':
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str = String(obj);
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break;
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}
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return str;
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}
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/**
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* Attempts to return a {@code String} representation of a specific
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* {@code Object} similar to the one accepted by the constructor
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* of Web's ExternalAPI.
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*
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* @param {Object} o - The URL to return a {@code String} representation of.
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* @returns {string} - A {@code String} representation of the specified
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* {@code Object}.
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*/
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export function urlObjectToString(o: Object): ?string {
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const url = parseStandardURIString(_fixURIStringScheme(o.url || ''));
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// protocol
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if (!url.protocol) {
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let protocol = o.protocol || o.scheme;
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if (protocol) {
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// Protocol is supposed to be the scheme and the final ':'. Anyway,
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// do not make a fuss if the final ':' is not there.
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protocol.endsWith(':') || (protocol += ':');
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url.protocol = protocol;
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}
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}
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// authority & pathname
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let { pathname } = url;
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if (!url.host) {
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// Web's ExternalAPI domain
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//
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// It may be host/hostname and pathname with the latter denoting the
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// tenant.
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const domain = o.domain || o.host || o.hostname;
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if (domain) {
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const { host, hostname, pathname: contextRoot, port }
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= parseStandardURIString(
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// XXX The value of domain in supposed to be host/hostname
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// and, optionally, pathname. Make sure it is not taken for
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// a pathname only.
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_fixURIStringScheme(`org.jitsi.meet://${domain}`));
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// authority
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if (host) {
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url.host = host;
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url.hostname = hostname;
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url.port = port;
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}
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// pathname
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pathname === '/' && contextRoot !== '/' && (pathname = contextRoot);
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}
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}
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// pathname
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// Web's ExternalAPI roomName
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const room = o.roomName || o.room;
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if (room
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&& (url.pathname.endsWith('/')
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|| !url.pathname.endsWith(`/${room}`))) {
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pathname.endsWith('/') || (pathname += '/');
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pathname += room;
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}
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url.pathname = pathname;
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// query/search
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// Web's ExternalAPI jwt
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const { jwt } = o;
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if (jwt) {
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let { search } = url;
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if (search.indexOf('?jwt=') === -1 && search.indexOf('&jwt=') === -1) {
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search.startsWith('?') || (search = `?${search}`);
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search.length === 1 || (search += '&');
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search += `jwt=${jwt}`;
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url.search = search;
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}
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}
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// fragment/hash
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let { hash } = url;
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for (const configName of [ 'config', 'interfaceConfig' ]) {
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const urlParamsArray
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= _objectToURLParamsArray(
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o[`${configName}Overwrite`]
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|| o[configName]
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|| o[`${configName}Override`]);
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if (urlParamsArray.length) {
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let urlParamsString
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= `${configName}.${urlParamsArray.join(`&${configName}.`)}`;
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if (hash.length) {
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urlParamsString = `&${urlParamsString}`;
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} else {
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hash = '#';
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}
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hash += urlParamsString;
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}
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}
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url.hash = hash;
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return url.toString() || undefined;
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}
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