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libReplaceText

替换网页内文本, 达到本地化的目的

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/372862/1040818/libReplaceText.js 

// ==UserScript==
// @name        libReplaceText
// @namespace   https://github.com/lzghzr/TampermonkeyJS
// @version     0.0.8
// @author      lzghzr
// @description 替换网页内文本, 达到本地化的目的
// @match       *://*/*
// @license     MIT
// @grant       none
// @run-at      document-start
// ==/UserScript==
class ReplaceText {
  constructor(i18n, mode = 'equal') {
    const i18nMap = new Map(i18n);
    const i18nArr = i18n.map(value => value[0]);
    if (mode === 'regexp') {
      this.textReplace = (text) => {
        if (i18nMap.has(text))
          text = i18nMap.get(text);
        else {
          const key = i18nArr.find(key => (key instanceof RegExp && text.match(key) !== null));
          if (key !== undefined)
            text = text.replace(key, i18nMap.get(key));
        }
        return text;
      };
    }
    else if (mode === 'match') {
      this.textReplace = (text) => {
        const key = i18nArr.find(key => (text.match(key) !== null));
        if (key !== undefined)
          text = text.replace(key, i18nMap.get(key));
        return text;
      };
    }
    else {
      this.textReplace = (text) => {
        if (i18nMap.has(text))
          text = i18nMap.get(text);
        return text;
      };
    }
    this.replaceAlert();
    this.replaceObserver();
  }
  W = typeof unsafeWindow === 'undefined' ? window : unsafeWindow;
  done = new Set();
  alert = this.W.alert.bind(this.W);
  confirm = this.W.confirm.bind(this.W);
  prompt = this.W.prompt.bind(this.W);
  textReplace;
  replaceAlert() {
    this.W.alert = (message) => this.alert(this.textReplace(message));
    this.W.confirm = (message) => this.confirm(this.textReplace(message));
    this.W.prompt = (message, _default) => this.prompt(this.textReplace(message), _default);
  }
  replaceNode(node, self = false) {
    const list = this.getReplaceList(node, self);
    for (let index in list) {
      list[index].forEach(node => {
        if (this.done.has(node[index]))
          return;
        const newText = this.textReplace(node[index]);
        if (node[index] !== newText) {
          this.done.add(newText);
          node[index] = newText;
        }
      });
    }
  }
  replaceObserver() {
    const observerOptions = { attributes: true, characterData: true, childList: true, subtree: true };
    const observer = new MutationObserver(mutations => {
      mutations.forEach(mutation => {
        if (mutation.type === 'attributes' || mutation.type === 'characterData')
          this.replaceNode(mutation.target, true);
        else if (mutation.type === 'childList')
          mutation.addedNodes.forEach(addedNode => this.replaceNode(addedNode));
      });
    });
    document.addEventListener('readystatechange', () => {
      observer.observe(document.body, observerOptions);
      this.replaceNode(document.body);
    }, { capture: true, once: true });
    Element.prototype.attachShadow = new Proxy(Element.prototype.attachShadow, {
      apply: function (target, _this, args) {
        const shadowRoot = Reflect.apply(target, _this, args);
        if (shadowRoot !== null)
          observer.observe(shadowRoot, observerOptions);
        return shadowRoot;
      }
    });
  }
  getReplaceList(node, self = false) {
    const list = {
      data: new Set(),
      placeholder: new Set(),
      title: new Set(),
      value: new Set(),
    };
    const nodeList = self ? [node] : this.flattenNode(node);
    nodeList.forEach(node => {
      if (node.parentElement instanceof HTMLScriptElement || node.parentElement instanceof HTMLStyleElement)
        return;
      if (node instanceof HTMLElement && node.title !== '')
        list.title.add(node);
      if (node instanceof HTMLInputElement && ['button', 'reset', 'submit'].includes(node.type) && node.value !== '')
        list.value.add(node);
      else if (node instanceof HTMLInputElement || node instanceof HTMLTextAreaElement && node.placeholder !== '')
        list.placeholder.add(node);
      else if (node instanceof Text)
        list.data.add(node);
    });
    return list;
  }
  flattenNode(node) {
    const nodeList = [];
    const treeWalker = document.createTreeWalker(node, NodeFilter.SHOW_ALL);
    do {
      nodeList.push(treeWalker.currentNode);
    } while (treeWalker.nextNode());
    return nodeList;
  }
}