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替换网页内文本, 达到本地化的目的
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// ==UserScript==
// @name libReplaceText
// @namespace https://github.com/lzghzr/TampermonkeyJS
// @version 0.0.6
// @author lzghzr
// @description 替换网页内文本, 达到本地化的目的
// @license MIT
// @grant none
// @run-at document-start
// ==/UserScript==
class ReplaceText {
constructor(i18n, mode = 'equal') {
this.W = typeof unsafeWindow === 'undefined' ? window : unsafeWindow;
this.done = new Set();
this.alert = this.W.alert.bind(this.W);
this.confirm = this.W.confirm.bind(this.W);
this.prompt = this.W.prompt.bind(this.W);
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();
}
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) {
this.nodeForEach(node).forEach(textNode => {
if (textNode.parentElement instanceof HTMLScriptElement || textNode.parentElement instanceof HTMLStyleElement)
return;
if (textNode instanceof Text) {
const newText = this.textReplace(textNode.data);
if (textNode.data !== newText) {
this.done.add(newText);
textNode.data = newText;
}
}
else if (textNode instanceof HTMLInputElement && ['button', 'reset', 'submit'].includes(textNode.type)) {
const newText = this.textReplace(textNode.value);
if (textNode.value !== newText) {
this.done.add(newText);
textNode.value = newText;
}
}
else if (typeof textNode.placeholder === 'string') {
const newText = this.textReplace(textNode.placeholder);
if (textNode.placeholder !== newText) {
this.done.add(newText);
textNode.placeholder = newText;
}
}
});
}
replaceObserver() {
const bodyObserver = new MutationObserver(mutations => {
mutations.forEach(mutation => {
if (mutation.type === 'attributes') {
const t = mutation.target;
if (t instanceof HTMLInputElement && ['button', 'reset', 'submit'].includes(t.type) && !this.done.has(t.value))
this.replaceNode(t);
else if (typeof t.placeholder === 'string' && !this.done.has(t.placeholder))
this.replaceNode(t);
}
else if (mutation.type === 'characterData') {
const t = mutation.target;
if (t instanceof Text && !this.done.has(t.data))
this.replaceNode(t);
}
else if (mutation.type === 'childList') {
mutation.addedNodes.forEach(addedNode => {
this.replaceNode(addedNode);
});
}
});
});
document.addEventListener('readystatechange', () => {
bodyObserver.observe(document.body, { attributes: true, characterData: true, childList: true, subtree: true });
this.replaceNode(document.body);
}, { capture: true, once: true });
}
nodeForEach(node) {
const list = [];
if (node.childNodes.length === 0)
list.push(node);
else {
node.childNodes.forEach(child => {
if (child.childNodes.length === 0)
list.push(child);
else
list.push(...this.nodeForEach(child));
});
}
return list;
}
}