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将页面上的汉字转换为简体字，需要手动添加包含的网站以启用
当前为
// ==UserScript==
// @name Han Simplify
// @name:zh 汉字转换为简体字
// @description 将页面上的汉字转换为简体字，需要手动添加包含的网站以启用
// @namespace https://github.com/tiansh
// @version 0.1
// @resource t2s https://tiansh.github.io/reader/data/han/t2s.json
// @include *
// @exclude *
// @grant GM_getResourceURL
// @grant GM.getResourceUrl
// @run-at document-start
// @license MIT
// ==/UserScript==
/* eslint-env browser, greasemonkey */
; (async function () {
/** @type {'t2s'|'s2t'} */
const RULE = 't2s';
const fetchTable = async function (url) {
return (await fetch(url)).json();
};
const loadTable = async function () {
try {
return fetchTable(GM_getResourceURL(RULE));
} catch {
return fetchTable(await GM.getResourceUrl(RULE));
}
};
/** @type {{ [ch: string]: [string, number] }[]} */
const table = await loadTable();
/** @param {string} text */
const translate = function (text) {
let output = '';
let state = 0;
const hasOwnProperty = Object.prototype.hasOwnProperty;
for (let char of text) {
while (true) {
const current = table[state];
const hasMatch = hasOwnProperty.call(current, char);
if (!hasMatch && state === 0) {
output += char;
break;
}
if (hasMatch) {
const [adding, next] = current[char];
if (adding) output += adding;
state = next;
break;
}
const [adding, next] = current[''];
if (adding) output += adding;
state = next;
}
}
while (state !== 0) {
const current = table[state];
const [adding, next] = current[''];
if (adding) output += adding;
state = next;
}
return output;
};
const correctLangTags = function () {
[...document.querySelectorAll('[lang]:not([hanconv-lang])')].forEach(element => {
const lang = element.getAttribute('lang');
element.setAttribute('hanconv-lang', lang);
if (RULE === 't2s' && /^zh\b(?:(?!.*-Hans)-(?:TW|HK|MO)|.*-Hant|$)/i.test(lang)) {
element.setAttribute('lang', 'zh-Hans');
}
if (RULE === 's2t' && /^zh\b(?:(?!.*-Hant)-(?:CN|SG|MY)|.*-Hans|$)/i.test(lang)) {
element.setAttribute('lang', 'zh-Hant');
}
if (!/^(?:ja|ko|vi)\b/i.test(lang)) {
element.setAttribute('hanconv-apply', 'apply');
}
});
};
/** @type {WeakMap<Text|Attr, string>} */
const translated = new WeakMap();
/** @param {Element} element */
const needTranslateElement = function (element) {
if (element.matches('script, style')) return false;
if (element.closest('svg, math, .notranslate, [translate="no"], code:not([translate="yes"]), var:not([translate="yes"])')) return false;
const lang = element.closest('[lang]');
return lang == null || lang.hasAttribute('hanconv-apply');
};
/** @param {Text|Attr} node */
const needTranslate = function (node) {
if (translated.has(node) && translated.get(node) === node.nodeValue) return false;
if (/^\s*$/.test(node.nodeValue)) return false;
const element = node instanceof Text ? node.parentElement : node.ownerElement;
if (!element) return true;
return needTranslateElement(element);
};
/** @param {Text|Attr} node */
const translateNode = function (node) {
if (!needTranslate(node)) return;
const result = translate(node.nodeValue);
translated.set(node, result);
node.nodeValue = result;
};
const translateContainer = function (container) {
if (container instanceof Text || container instanceof Attr) {
translateNode(container);
} else if (container instanceof Element) {
const nodes = document.evaluate([
// Translate text
'//text()',
// Translate attributes
'(//applet|//area|//img|//input)/@alt',
'(//a|//area)/@download',
'//@title',
'//@aria-label', '//@aria-description',
].join('|'), container, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for (let index = 0; index < nodes.snapshotLength; index++) {
translateNode(nodes.snapshotItem(index));
}
}
};
let timeout = null;
const updateInterval = 200;
const translateTargets = new Set();
const observer = new MutationObserver(function onMutate(records) {
correctLangTags();
records.forEach(record => {
if (record.type === 'childList') {
[...record.addedNodes].forEach(node => translateTargets.add(node));
} else {
translateTargets.add(record.target);
}
});
if (!timeout) {
const targets = [...translateTargets].filter((node, _, arr) => !arr.some(other => other !== node && other.contains(node)));
translateTargets.clear();
targets.forEach(translateContainer);
timeout = setTimeout(() => { timeout = null; onMutate([]); }, updateInterval);
}
});
observer.observe(document, { subtree: true, childList: true, characterData: true, attributes: true });
}());