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-rw-r--r--dev/lint/html-scripts.js202
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diff --git a/dev/lint/html-scripts.js b/dev/lint/html-scripts.js
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+/*
+ * Copyright (C) 2023 Yomitan Authors
+ * Copyright (C) 2020-2022 Yomichan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+const fs = require('fs');
+const path = require('path');
+const assert = require('assert');
+const {JSDOM} = require('jsdom');
+const {getAllFiles} = require('../util');
+
+
+/**
+ * @param {string} fileName
+ * @returns {?fs.Stats}
+ */
+function lstatSyncSafe(fileName) {
+ try {
+ return fs.lstatSync(fileName);
+ } catch (e) {
+ return null;
+ }
+}
+
+/**
+ * @param {string} src
+ * @param {string} fileName
+ * @param {string} extDir
+ */
+function validatePath(src, fileName, extDir) {
+ assert.ok(typeof src === 'string', `<script> missing src attribute in ${fileName}`);
+ assert.ok(src.startsWith('/'), `<script> src attribute is not absolute in ${fileName} (src=${JSON.stringify(src)})`);
+ const relativeSrc = src.substring(1);
+ assert.ok(!path.isAbsolute(relativeSrc), `<script> src attribute is invalid in ${fileName} (src=${JSON.stringify(src)})`);
+ const fullSrc = path.join(extDir, relativeSrc);
+ const stats = lstatSyncSafe(fullSrc);
+ assert.ok(stats !== null, `<script> src file not found in ${fileName} (src=${JSON.stringify(src)})`);
+ assert.ok(stats.isFile(), `<script> src file invalid in ${fileName} (src=${JSON.stringify(src)})`);
+}
+
+/**
+ * @param {string} string
+ * @param {RegExp} pattern
+ * @returns {number}
+ */
+function getSubstringCount(string, pattern) {
+ let count = 0;
+ while (true) {
+ const match = pattern.exec(string);
+ if (match === null) { break; }
+ ++count;
+ }
+ return count;
+}
+
+/**
+ * @param {string[]} scriptPaths
+ * @returns {string[]}
+ */
+function getSortedScriptPaths(scriptPaths) {
+ // Sort file names without the extension
+ const extensionPattern = /\.[^.]*$/;
+ const scriptPaths2 = scriptPaths.map((value) => {
+ const match = extensionPattern.exec(value);
+ let ext = '';
+ if (match !== null) {
+ ext = match[0];
+ value = value.substring(0, value.length - ext.length);
+ }
+ return {value, ext};
+ });
+
+ const stringComparer = new Intl.Collator('en-US'); // Invariant locale
+ scriptPaths2.sort((a, b) => stringComparer.compare(a.value, b.value));
+
+ return scriptPaths2.map(({value, ext}) => `${value}${ext}`);
+}
+
+/**
+ * @param {string} fileName
+ * @param {import('jsdom').DOMWindow} window
+ * @throws {Error}
+ */
+function validateScriptOrder(fileName, window) {
+ const {document, Node: {ELEMENT_NODE, TEXT_NODE}, NodeFilter} = window;
+
+ const scriptElements = document.querySelectorAll('script');
+ if (scriptElements.length === 0) { return; }
+
+ // Assert all scripts are siblings
+ const scriptContainerElement = /** @type {Node} */ (scriptElements[0].parentNode);
+ for (const element of scriptElements) {
+ if (element.parentNode !== scriptContainerElement) {
+ assert.fail('All script nodes are not contained within the same element');
+ }
+ }
+
+ // Get script groupings and order
+ /** @type {string[][]} */
+ const scriptGroups = [];
+ const newlinePattern = /\n/g;
+ let separatingText = '';
+ const walker = document.createTreeWalker(scriptContainerElement, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_TEXT);
+ walker.firstChild();
+ for (let node = /** @type {?Node} */ (walker.currentNode); node !== null; node = walker.nextSibling()) {
+ switch (node.nodeType) {
+ case ELEMENT_NODE:
+ if (/** @type {Element} */ (node).tagName.toLowerCase() === 'script') {
+ /** @type {string[]} */
+ let scriptGroup;
+ if (scriptGroups.length === 0 || getSubstringCount(separatingText, newlinePattern) >= 2) {
+ scriptGroup = [];
+ scriptGroups.push(scriptGroup);
+ } else {
+ scriptGroup = scriptGroups[scriptGroups.length - 1];
+ }
+ scriptGroup.push(/** @type {HTMLScriptElement} */ (node).src);
+ separatingText = '';
+ }
+ break;
+ case TEXT_NODE:
+ separatingText += node.nodeValue;
+ break;
+ }
+ }
+
+ // Ensure core.js is first (if it is present)
+ const ignorePattern = /^\/lib\//;
+ const index = scriptGroups.flat()
+ .filter((value) => !ignorePattern.test(value))
+ .findIndex((value) => (value === '/js/core.js'));
+ assert.ok(index <= 0, 'core.js is not the first included script');
+
+ // Check script order
+ for (let i = 0, ii = scriptGroups.length; i < ii; ++i) {
+ const scriptGroup = scriptGroups[i];
+ try {
+ assert.deepStrictEqual(scriptGroup, getSortedScriptPaths(scriptGroup));
+ } catch (e) {
+ console.error(`Script order for group ${i + 1} in file ${fileName} is not correct:`);
+ throw e;
+ }
+ }
+}
+
+/**
+ * @param {string} fileName
+ * @param {string} extDir
+ */
+function validateHtmlScripts(fileName, extDir) {
+ const fullFileName = path.join(extDir, fileName);
+ const domSource = fs.readFileSync(fullFileName, {encoding: 'utf8'});
+ const dom = new JSDOM(domSource);
+ const {window} = dom;
+ const {document} = window;
+ try {
+ for (const {src} of document.querySelectorAll('script')) {
+ validatePath(src, fullFileName, extDir);
+ }
+ for (const {href} of document.querySelectorAll('link')) {
+ validatePath(href, fullFileName, extDir);
+ }
+ validateScriptOrder(fileName, window);
+ } finally {
+ window.close();
+ }
+}
+
+
+/** */
+function main() {
+ try {
+ const extDir = path.resolve(__dirname, '..', '..', 'ext');
+ const pattern = /\.html$/;
+ const ignorePattern = /^lib[\\/]/;
+ const fileNames = getAllFiles(extDir, (f) => pattern.test(f) && !ignorePattern.test(f));
+ for (const fileName of fileNames) {
+ validateHtmlScripts(fileName, extDir);
+ }
+ } catch (e) {
+ console.error(e);
+ process.exit(-1);
+ return;
+ }
+ process.exit(0);
+}
+
+
+if (require.main === module) { main(); }