101 lines
2.9 KiB
JavaScript
101 lines
2.9 KiB
JavaScript
/*
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*
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* Air Horner
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* Copyright 2015 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*
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*/
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if (!Cache.prototype.add) {
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Cache.prototype.add = function add(request) {
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return this.addAll([request]);
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};
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}
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if (!Cache.prototype.addAll) {
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Cache.prototype.addAll = function addAll(requests) {
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var cache = this;
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// Since DOMExceptions are not constructable:
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function NetworkError(message) {
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this.name = 'NetworkError';
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this.code = 19;
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this.message = message;
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}
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NetworkError.prototype = Object.create(Error.prototype);
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return Promise.resolve().then(function() {
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if (arguments.length < 1) throw new TypeError();
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// Simulate sequence<(Request or USVString)> binding:
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var sequence = [];
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requests = requests.map(function(request) {
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if (request instanceof Request) {
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return request;
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}
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else {
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return String(request); // may throw TypeError
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}
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});
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return Promise.all(
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requests.map(function(request) {
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if (typeof request === 'string') {
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request = new Request(request);
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}
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var scheme = new URL(request.url).protocol;
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if (scheme !== 'http:' && scheme !== 'https:') {
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throw new NetworkError("Invalid scheme");
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}
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return fetch(request.clone());
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})
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);
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}).then(function(responses) {
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// TODO: check that requests don't overwrite one another
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// (don't think this is possible to polyfill due to opaque responses)
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return Promise.all(
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responses.map(function(response, i) {
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return cache.put(requests[i], response);
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})
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);
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}).then(function() {
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return undefined;
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});
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};
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}
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if (!CacheStorage.prototype.match) {
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// This is probably vulnerable to race conditions (removing caches etc)
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CacheStorage.prototype.match = function match(request, opts) {
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var caches = this;
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return this.keys().then(function(cacheNames) {
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var match;
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return cacheNames.reduce(function(chain, cacheName) {
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return chain.then(function() {
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return match || caches.open(cacheName).then(function(cache) {
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return cache.match(request, opts);
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}).then(function(response) {
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match = response;
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return match;
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});
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});
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}, Promise.resolve());
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});
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};
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} |