294 lines
13 KiB
JavaScript
294 lines
13 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.embedWebFonts = exports.getWebFontCSS = void 0;
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var util_1 = require("./util");
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var dataurl_1 = require("./dataurl");
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var embed_resources_1 = require("./embed-resources");
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var cssFetchCache = {};
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function fetchCSS(url) {
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return __awaiter(this, void 0, void 0, function () {
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var cache, res, cssText;
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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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cache = cssFetchCache[url];
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if (cache != null) {
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return [2 /*return*/, cache];
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}
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return [4 /*yield*/, fetch(url)];
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case 1:
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res = _a.sent();
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return [4 /*yield*/, res.text()];
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case 2:
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cssText = _a.sent();
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cache = { url: url, cssText: cssText };
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cssFetchCache[url] = cache;
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return [2 /*return*/, cache];
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}
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});
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});
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}
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function embedFonts(data, options) {
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return __awaiter(this, void 0, void 0, function () {
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var cssText, regexUrl, fontLocs, loadFonts;
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var _this = this;
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return __generator(this, function (_a) {
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cssText = data.cssText;
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regexUrl = /url\(["']?([^"')]+)["']?\)/g;
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fontLocs = cssText.match(/url\([^)]+\)/g) || [];
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loadFonts = fontLocs.map(function (loc) { return __awaiter(_this, void 0, void 0, function () {
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var url;
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return __generator(this, function (_a) {
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url = loc.replace(regexUrl, '$1');
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if (!url.startsWith('https://')) {
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url = new URL(url, data.url).href;
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}
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return [2 /*return*/, (0, dataurl_1.fetchAsDataURL)(url, options.fetchRequestInit, function (_a) {
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var result = _a.result;
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cssText = cssText.replace(loc, "url(".concat(result, ")"));
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return [loc, result];
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})];
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});
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}); });
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return [2 /*return*/, Promise.all(loadFonts).then(function () { return cssText; })];
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});
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});
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}
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function parseCSS(source) {
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if (source == null) {
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return [];
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}
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var result = [];
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var commentsRegex = /(\/\*[\s\S]*?\*\/)/gi;
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// strip out comments
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var cssText = source.replace(commentsRegex, '');
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// eslint-disable-next-line prefer-regex-literals
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var keyframesRegex = new RegExp('((@.*?keyframes [\\s\\S]*?){([\\s\\S]*?}\\s*?)})', 'gi');
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// eslint-disable-next-line no-constant-condition
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while (true) {
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var matches = keyframesRegex.exec(cssText);
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if (matches === null) {
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break;
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}
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result.push(matches[0]);
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}
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cssText = cssText.replace(keyframesRegex, '');
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var importRegex = /@import[\s\S]*?url\([^)]*\)[\s\S]*?;/gi;
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// to match css & media queries together
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var combinedCSSRegex = '((\\s*?(?:\\/\\*[\\s\\S]*?\\*\\/)?\\s*?@media[\\s\\S]' +
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'*?){([\\s\\S]*?)}\\s*?})|(([\\s\\S]*?){([\\s\\S]*?)})';
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// unified regex
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var unifiedRegex = new RegExp(combinedCSSRegex, 'gi');
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// eslint-disable-next-line no-constant-condition
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while (true) {
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var matches = importRegex.exec(cssText);
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if (matches === null) {
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matches = unifiedRegex.exec(cssText);
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if (matches === null) {
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break;
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}
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else {
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importRegex.lastIndex = unifiedRegex.lastIndex;
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}
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}
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else {
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unifiedRegex.lastIndex = importRegex.lastIndex;
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}
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result.push(matches[0]);
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}
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return result;
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}
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function getCSSRules(styleSheets, options) {
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return __awaiter(this, void 0, void 0, function () {
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var ret, deferreds;
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return __generator(this, function (_a) {
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ret = [];
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deferreds = [];
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// First loop inlines imports
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styleSheets.forEach(function (sheet) {
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if ('cssRules' in sheet) {
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try {
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(0, util_1.toArray)(sheet.cssRules || []).forEach(function (item, index) {
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if (item.type === CSSRule.IMPORT_RULE) {
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var importIndex_1 = index + 1;
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var url = item.href;
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var deferred = fetchCSS(url)
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.then(function (metadata) { return embedFonts(metadata, options); })
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.then(function (cssText) {
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return parseCSS(cssText).forEach(function (rule) {
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try {
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sheet.insertRule(rule, rule.startsWith('@import')
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? (importIndex_1 += 1)
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: sheet.cssRules.length);
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}
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catch (error) {
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console.error('Error inserting rule from remote css', {
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rule: rule,
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error: error,
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});
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}
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});
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})
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.catch(function (e) {
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console.error('Error loading remote css', e.toString());
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});
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deferreds.push(deferred);
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}
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});
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}
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catch (e) {
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var inline_1 = styleSheets.find(function (a) { return a.href == null; }) || document.styleSheets[0];
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if (sheet.href != null) {
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deferreds.push(fetchCSS(sheet.href)
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.then(function (metadata) { return embedFonts(metadata, options); })
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.then(function (cssText) {
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return parseCSS(cssText).forEach(function (rule) {
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inline_1.insertRule(rule, sheet.cssRules.length);
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});
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})
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.catch(function (err) {
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console.error('Error loading remote stylesheet', err);
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}));
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}
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console.error('Error inlining remote css file', e);
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}
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}
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});
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return [2 /*return*/, Promise.all(deferreds).then(function () {
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// Second loop parses rules
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styleSheets.forEach(function (sheet) {
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if ('cssRules' in sheet) {
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try {
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(0, util_1.toArray)(sheet.cssRules || []).forEach(function (item) {
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ret.push(item);
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});
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}
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catch (e) {
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console.error("Error while reading CSS rules from ".concat(sheet.href), e);
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}
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}
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});
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return ret;
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})];
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});
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});
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}
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function getWebFontRules(cssRules) {
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return cssRules
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.filter(function (rule) { return rule.type === CSSRule.FONT_FACE_RULE; })
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.filter(function (rule) { return (0, embed_resources_1.shouldEmbed)(rule.style.getPropertyValue('src')); });
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}
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function parseWebFontRules(node, options) {
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return __awaiter(this, void 0, void 0, function () {
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var styleSheets, cssRules;
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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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if (node.ownerDocument == null) {
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throw new Error('Provided element is not within a Document');
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}
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styleSheets = (0, util_1.toArray)(node.ownerDocument.styleSheets);
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return [4 /*yield*/, getCSSRules(styleSheets, options)];
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case 1:
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cssRules = _a.sent();
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return [2 /*return*/, getWebFontRules(cssRules)];
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}
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});
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});
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}
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function getWebFontCSS(node, options) {
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return __awaiter(this, void 0, void 0, function () {
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var rules, cssTexts;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0: return [4 /*yield*/, parseWebFontRules(node, options)];
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case 1:
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rules = _a.sent();
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return [4 /*yield*/, Promise.all(rules.map(function (rule) {
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var baseUrl = rule.parentStyleSheet ? rule.parentStyleSheet.href : null;
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return (0, embed_resources_1.embedResources)(rule.cssText, baseUrl, options);
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}))];
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case 2:
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cssTexts = _a.sent();
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return [2 /*return*/, cssTexts.join('\n')];
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}
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});
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});
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}
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exports.getWebFontCSS = getWebFontCSS;
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function embedWebFonts(clonedNode, options) {
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return __awaiter(this, void 0, void 0, function () {
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var cssText, _a, _b, styleNode, sytleContent;
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return __generator(this, function (_c) {
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switch (_c.label) {
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case 0:
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if (!(options.fontEmbedCSS != null)) return [3 /*break*/, 1];
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_a = options.fontEmbedCSS;
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return [3 /*break*/, 5];
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case 1:
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if (!options.skipFonts) return [3 /*break*/, 2];
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_b = null;
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return [3 /*break*/, 4];
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case 2: return [4 /*yield*/, getWebFontCSS(clonedNode, options)];
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case 3:
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_b = _c.sent();
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_c.label = 4;
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case 4:
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_a = _b;
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_c.label = 5;
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case 5:
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cssText = _a;
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if (cssText) {
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styleNode = document.createElement('style');
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sytleContent = document.createTextNode(cssText);
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styleNode.appendChild(sytleContent);
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if (clonedNode.firstChild) {
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clonedNode.insertBefore(styleNode, clonedNode.firstChild);
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}
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else {
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clonedNode.appendChild(styleNode);
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}
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}
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return [2 /*return*/];
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}
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});
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});
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}
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exports.embedWebFonts = embedWebFonts;
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//# sourceMappingURL=embed-webfonts.js.map
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