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
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// ==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 1.3
// @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
// @supportURL https://github.com/tiansh/us-han-simplify/issues
// ==/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();
const hasOwnProperty = Object.prototype.hasOwnProperty;
/** @param {string} text */
const translate = function (text) {
let output = '';
let state = 0;
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 needTranslateNode = function (node) {
if (translated.has(node) && translated.get(node) === node.nodeValue) return false;
if (/^\s*$/.test(node.nodeValue)) return false;
return true;
};
/** @param {Text|Attr} node */
const translateNode = function (node) {
if (!node || !needTranslateNode(node)) return;
const result = translate(node.nodeValue);
translated.set(node, result);
node.nodeValue = result;
};
const translateTree = function translateTree(node) {
if (node instanceof Text) {
translateNode(node);
} else if (node instanceof Element) {
const tagName = node.tagName;
if (['SVG', 'MATH', 'SCRIPT', 'STYLE', 'TEXTAREA'].includes(tagName)) return;
if (node.attributes.lang && !node.attributes['hanconv-apply']) return;
if (node.classList.contains('notranslate')) return;
const translate = node.getAttribute('translate');
if (translate === 'no') return;
if (['CODE', 'VAR'].includes(tagName) && translate !== 'yes') return;
[...node.childNodes].forEach(translateTree);
if (['APPLET', 'AREA', 'IMG', 'INPUT'].includes(tagName)) translateNode(node.attributes.alt);
if (['A', 'AREA'].includes(tagName)) translateNode(node.attributes.download);
translateNode(node.attributes.title);
translateNode(node.attributes['aria-label']);
translateNode(node.attributes['aria-description']);
} else if (node instanceof Document) {
[...node.childNodes].forEach(translateTree);
}
};
/** @param {Element} container */
const translateContainer = function (container) {
if (container instanceof Text) {
if (needTranslateElement(container.parentElement)) translateNode(container);
} else if (container instanceof Attr) {
if (needTranslateElement(container.ownerElement)) translateNode(container);
} else if (container instanceof Element) {
if (!needTranslateElement(container)) {
[...container.querySelectorAll('[hanconv-apply]')].forEach(translateContainer);
return;
}
translateTree(container);
} else if (container instanceof Document) {
translateTree(container);
}
};
const observer = new MutationObserver(function onMutate(records) {
correctLangTags();
const translateTargets = new Set();
records.forEach(record => {
if (record.type === 'childList') {
[...record.addedNodes].forEach(node => translateTargets.add(node));
} else {
translateTargets.add(record.target);
}
});
[...translateTargets].forEach(translateContainer);
});
observer.observe(document, { subtree: true, childList: true, characterData: true, attributes: true });
if (document.readyState === 'complete') {
translateContainer(document);
} else document.addEventListener('DOMContentLoaded', () => {
translateContainer(document);
}, { once: true });
}());