127 lines
6.3 KiB
JavaScript
127 lines
6.3 KiB
JavaScript
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"use strict";
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (g && (g = 0, op[0] && (_ = 0)), _) try {
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if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.embedResources = exports.shouldEmbed = exports.embed = exports.parseURLs = void 0;
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var util_1 = require("./util");
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var mimes_1 = require("./mimes");
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var dataurl_1 = require("./dataurl");
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var URL_REGEX = /url\((['"]?)([^'"]+?)\1\)/g;
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var URL_WITH_FORMAT_REGEX = /url\([^)]+\)\s*format\((["']?)([^"']+)\1\)/g;
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var FONT_SRC_REGEX = /src:\s*(?:url\([^)]+\)\s*format\([^)]+\)[,;]\s*)+/g;
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function toRegex(url) {
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// eslint-disable-next-line no-useless-escape
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var escaped = url.replace(/([.*+?^${}()|\[\]\/\\])/g, '\\$1');
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return new RegExp("(url\\(['\"]?)(".concat(escaped, ")(['\"]?\\))"), 'g');
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}
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function parseURLs(cssText) {
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var urls = [];
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cssText.replace(URL_REGEX, function (raw, quotation, url) {
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urls.push(url);
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return raw;
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});
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return urls.filter(function (url) { return !(0, dataurl_1.isDataUrl)(url); });
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}
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exports.parseURLs = parseURLs;
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function embed(cssText, resourceURL, baseURL, options, getContentFromUrl) {
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return __awaiter(this, void 0, void 0, function () {
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var resolvedURL, contentType, dataURL, content, error_1;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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_a.trys.push([0, 5, , 6]);
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resolvedURL = baseURL ? (0, util_1.resolveUrl)(resourceURL, baseURL) : resourceURL;
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contentType = (0, mimes_1.getMimeType)(resourceURL);
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dataURL = void 0;
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if (!getContentFromUrl) return [3 /*break*/, 2];
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return [4 /*yield*/, getContentFromUrl(resolvedURL)];
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case 1:
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content = _a.sent();
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dataURL = (0, dataurl_1.makeDataUrl)(content, contentType);
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return [3 /*break*/, 4];
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case 2: return [4 /*yield*/, (0, dataurl_1.resourceToDataURL)(resolvedURL, contentType, options)];
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case 3:
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dataURL = _a.sent();
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_a.label = 4;
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case 4: return [2 /*return*/, cssText.replace(toRegex(resourceURL), "$1".concat(dataURL, "$3"))];
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case 5:
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error_1 = _a.sent();
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return [3 /*break*/, 6];
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case 6: return [2 /*return*/, cssText];
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}
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});
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});
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}
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exports.embed = embed;
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function filterPreferredFontFormat(str, _a) {
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var preferredFontFormat = _a.preferredFontFormat;
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return !preferredFontFormat
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? str
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: str.replace(FONT_SRC_REGEX, function (match) {
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// eslint-disable-next-line no-constant-condition
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while (true) {
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var _a = URL_WITH_FORMAT_REGEX.exec(match) || [], src = _a[0], format = _a[2];
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if (!format) {
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return '';
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}
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if (format === preferredFontFormat) {
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return "src: ".concat(src, ";");
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}
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}
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});
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}
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function shouldEmbed(url) {
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return url.search(URL_REGEX) !== -1;
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}
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exports.shouldEmbed = shouldEmbed;
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function embedResources(cssText, baseUrl, options) {
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return __awaiter(this, void 0, void 0, function () {
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var filteredCSSText, urls;
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return __generator(this, function (_a) {
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if (!shouldEmbed(cssText)) {
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return [2 /*return*/, cssText];
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}
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filteredCSSText = filterPreferredFontFormat(cssText, options);
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urls = parseURLs(filteredCSSText);
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return [2 /*return*/, urls.reduce(function (deferred, url) {
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return deferred.then(function (css) { return embed(css, url, baseUrl, options); });
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}, Promise.resolve(filteredCSSText))];
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});
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});
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}
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exports.embedResources = embedResources;
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//# sourceMappingURL=embed-resources.js.map
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