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* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import FactoryMaker from '../../core/FactoryMaker.js';
/**
* @module DefaultURLUtils
* @description Provides utility functions for operating on URLs.
* Initially this is simply a method to determine the Base URL of a URL, but
* should probably include other things provided all over the place such as
* determining whether a URL is relative/absolute, resolving two paths etc.
* @ignore
*/
function DefaultURLUtils() {
let resolveFunction;
const schemeRegex = /^[a-z][a-z0-9+\-_.]*:/i;
const httpUrlRegex = /^https?:\/\//i;
const httpsUrlRegex = /^https:\/\//i;
const originRegex = /^([a-z][a-z0-9+\-_.]*:\/\/[^\/]+)\/?/i;
/**
* Resolves a url given an optional base url
* Uses window.URL to do the resolution.
*
* @param {string} url
* @param {string} [baseUrl]
* @return {string}
* @memberof module:DefaultURLUtils
* @instance
* @private
*/
const nativeURLResolver = (url, baseUrl) => {
try {
return new window.URL(url, baseUrl).toString();
} catch (e) {
return url;
}
};
/**
* Resolves a url given an optional base url
* Does not resolve ./, ../ etc but will do enough to construct something
* which will satisfy XHR etc when window.URL is not available ie
* IE11/node etc.
*
* @param {string} url
* @param {string} [baseUrl]
* @return {string}
* @memberof module:DefaultURLUtils
* @instance
* @private
*/
const dumbURLResolver = (url, baseUrl) => {
let baseUrlParseFunc = parseBaseUrl;
if (!baseUrl) {
return url;
}
if (!isRelative(url)) {
return url;
}
if (isPathAbsolute(url)) {
baseUrlParseFunc = parseOrigin;
}
if (isSchemeRelative(url)) {
baseUrlParseFunc = parseScheme;
}
const base = baseUrlParseFunc(baseUrl);
const joinChar =
base.charAt(base.length - 1) !== '/' &&
url.charAt(0) !== '/' ?
'/' : '';
return [base, url].join(joinChar);
};
function setup() {
try {
const u = new window.URL('x', 'http://y'); // eslint-disable-line
resolveFunction = nativeURLResolver;
} catch (e) {
// must be IE11/Node etc
} finally {
resolveFunction = resolveFunction || dumbURLResolver;
}
}
/**
* Returns a string that contains the Base URL of a URL, if determinable.
* @param {string} url - full url
* @return {string}
* @memberof module:DefaultURLUtils
* @instance
*/
function parseBaseUrl(url) {
const slashIndex = url.indexOf('/');
const lastSlashIndex = url.lastIndexOf('/');
if (slashIndex !== -1) {
// if there is only '//'
Iif (lastSlashIndex === slashIndex + 1) {
return url;
}
if (url.indexOf('?') !== -1) {
url = url.substring(0, url.indexOf('?'));
}
return url.substring(0, lastSlashIndex + 1);
}
return '';
}
/**
* Returns a string that contains the scheme and origin of a URL,
* if determinable.
* @param {string} url - full url
* @return {string}
* @memberof module:DefaultURLUtils
* @instance
*/
function parseOrigin(url) {
const matches = url.match(originRegex);
if (matches) {
return matches[1];
}
return '';
}
/**
* Returns a string that contains the fragment of a URL without scheme,
* if determinable.
* @param {string} url - full url
* @return {string}
* @memberof module:DefaultURLUtils
* @instance
*/
function removeHostname(url) {
let urlParts = /^(?:\w+\:\/\/)?([^\/]+)(.*)$/.exec(url); //[1] = host / [2] = path
return urlParts[2].substring(1);
}
/**
* Returns a string that contains the scheme of a URL, if determinable.
* @param {string} url - full url
* @return {string}
* @memberof module:DefaultURLUtils
* @instance
*/
function parseScheme(url) {
const matches = url.match(schemeRegex);
if (matches) {
return matches[0];
}
return '';
}
/**
* Determines whether the url is relative.
* @return {boolean}
* @param {string} url
* @memberof module:DefaultURLUtils
* @instance
*/
function isRelative(url) {
return !schemeRegex.test(url);
}
/**
* Determines whether the url is path-absolute.
* @return {bool}
* @param {string} url
* @memberof module:DefaultURLUtils
* @instance
*/
function isPathAbsolute(url) {
return isRelative(url) && url.charAt(0) === '/';
}
/**
* Determines whether the url is scheme-relative.
* @return {bool}
* @param {string} url
* @memberof module:DefaultURLUtils
* @instance
*/
function isSchemeRelative(url) {
return url.indexOf('//') === 0;
}
/**
* Determines whether the url is an HTTP-URL as defined in ISO/IEC
* 23009-1:2014 3.1.15. ie URL with a fixed scheme of http or https
* @return {bool}
* @param {string} url
* @memberof module:DefaultURLUtils
* @instance
*/
function isHTTPURL(url) {
return httpUrlRegex.test(url);
}
/**
* Determines whether the supplied url has https scheme
* @return {bool}
* @param {string} url
* @memberof module:DefaultURLUtils
* @instance
*/
function isHTTPS(url) {
return httpsUrlRegex.test(url);
}
/**
* Resolves a url given an optional base url
* @return {string}
* @param {string} url
* @param {string} [baseUrl]
* @memberof module:DefaultURLUtils
* @instance
*/
function resolve(url, baseUrl) {
return resolveFunction(url, baseUrl);
}
setup();
const instance = {
parseBaseUrl: parseBaseUrl,
parseOrigin: parseOrigin,
parseScheme: parseScheme,
isRelative: isRelative,
isPathAbsolute: isPathAbsolute,
isSchemeRelative: isSchemeRelative,
isHTTPURL: isHTTPURL,
isHTTPS: isHTTPS,
removeHostname: removeHostname,
resolve: resolve
};
return instance;
}
DefaultURLUtils.__dashjs_factory_name = 'DefaultURLUtils';
export default FactoryMaker.getSingletonFactory(DefaultURLUtils);
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