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73 lines
3.0 KiB
73 lines
3.0 KiB
/* |
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Copyright 2018 Google LLC |
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Use of this source code is governed by an MIT-style |
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license that can be found in the LICENSE file or at |
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https://opensource.org/licenses/MIT. |
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*/ |
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import { assert } from 'workbox-core/_private/assert.js'; |
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import { logger } from 'workbox-core/_private/logger.js'; |
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import { Route } from './Route.js'; |
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import './_version.js'; |
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/** |
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* RegExpRoute makes it easy to create a regular expression based |
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* {@link workbox-routing.Route}. |
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* |
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* For same-origin requests the RegExp only needs to match part of the URL. For |
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* requests against third-party servers, you must define a RegExp that matches |
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* the start of the URL. |
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* |
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* @memberof workbox-routing |
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* @extends workbox-routing.Route |
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*/ |
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class RegExpRoute extends Route { |
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/** |
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* If the regular expression contains |
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* [capture groups]{@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#grouping-back-references}, |
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* the captured values will be passed to the |
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* {@link workbox-routing~handlerCallback} `params` |
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* argument. |
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* |
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* @param {RegExp} regExp The regular expression to match against URLs. |
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* @param {workbox-routing~handlerCallback} handler A callback |
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* function that returns a Promise resulting in a Response. |
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* @param {string} [method='GET'] The HTTP method to match the Route |
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* against. |
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*/ |
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constructor(regExp, handler, method) { |
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if (process.env.NODE_ENV !== 'production') { |
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assert.isInstance(regExp, RegExp, { |
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moduleName: 'workbox-routing', |
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className: 'RegExpRoute', |
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funcName: 'constructor', |
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paramName: 'pattern', |
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}); |
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} |
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const match = ({ url }) => { |
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const result = regExp.exec(url.href); |
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// Return immediately if there's no match. |
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if (!result) { |
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return; |
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} |
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// Require that the match start at the first character in the URL string |
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// if it's a cross-origin request. |
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// See https://github.com/GoogleChrome/workbox/issues/281 for the context |
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// behind this behavior. |
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if (url.origin !== location.origin && result.index !== 0) { |
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if (process.env.NODE_ENV !== 'production') { |
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logger.debug(`The regular expression '${regExp.toString()}' only partially matched ` + |
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`against the cross-origin URL '${url.toString()}'. RegExpRoute's will only ` + |
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`handle cross-origin requests if they match the entire URL.`); |
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} |
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return; |
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} |
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// If the route matches, but there aren't any capture groups defined, then |
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// this will return [], which is truthy and therefore sufficient to |
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// indicate a match. |
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// If there are capture groups, then it will return their values. |
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return result.slice(1); |
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}; |
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super(match, handler, method); |
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} |
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} |
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export { RegExpRoute };
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