251 lines
9.3 KiB
HTML
251 lines
9.3 KiB
HTML
<div class="markdown-body">
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{{Front}}
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</div>
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<script>
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// 日志级别： debug、error
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var config_logLevel = "error";
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var scriptUrls = [
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"https://gcore.jsdelivr.net/npm/markdown-it@14.1.0/dist/markdown-it.min.js",
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"https://gcore.jsdelivr.net/gh/highlightjs/cdn-release@11.11.1/build/highlight.min.js",
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];
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// 执行内容转换
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try {
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hideCard();
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if (typeof AnkiMarkDownIt !== 'undefined') {
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// 可以复用 AnkiMarkDownIt，直接执行转换
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renderMarkDownFn();
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} else {
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initDivLog();
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initCensorUtil();
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initScriptResource(scriptUrls).then(() => {
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initAnkiMarkDownIt();
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renderMarkDownFn();
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});
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}
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} catch (e) {
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console.error(e);
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DivLog.error("Error: ", e);
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showCard();
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}
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/**
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* 转换卡片内容为 markdown 网页格式
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*/
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function renderMarkDownFn() {
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document.querySelectorAll('.markdown-body').forEach((div) => {
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div.innerHTML = renderMarkDown(div.innerHTML);
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});
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showCard();
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}
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/**
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* 绘制内容为 markdown 网页格式
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* @param {string} text
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* @returns {string}
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*/
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function renderMarkDown(text) {
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DivLog.debug("======================================");
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DivLog.debug("Original content：", text);
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// 隐藏标签 <code></code>
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let code_tag_matches;
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[text, code_tag_matches] = CensorUtil.censor(text, CensorUtil.Code_Reg, CensorUtil.Code_Replace);
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if (code_tag_matches.length > 0) {
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DivLog.debug("After hide html tag <code></code>：", text);
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}
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// 隐藏标签 <mjx-container></mjx-container>
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let mjx_tag_matches
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[text, mjx_tag_matches] = CensorUtil.censor(text, CensorUtil.Mjx_Container_Reg, CensorUtil.Mjx_Container_Replace);
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if (mjx_tag_matches.length > 0) {
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DivLog.debug("After hide html tag <mjx-container></mjx-container>：", text);
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}
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// 隐藏数学公式：\(...\) 和 \[...\]
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let math_tag_matches;
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[text, math_tag_matches] = CensorUtil.censor(text, CensorUtil.MathJs_Reg, CensorUtil.MathJs_Replace);
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if (math_tag_matches.length > 0) {
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DivLog.debug("After hide \\ (...\\) 和 \\ [...\\]：", text);
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}
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text = text.trim()
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.replace(/&(amp|lt|gt|nbsp);/g, (_, type) => {
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const entities = {amp: '&', lt: '<', gt: '>', nbsp: ' '};
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return entities[type] || '';
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})
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.replace(/<br>/g, '\n');
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DivLog.debug("After reverse some HTML tags：", text);
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// 转换成 markdown 网页格式
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text = AnkiMarkDownIt.render(text);
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DivLog.debug("After markdown-it conversion：", text);
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// 还原隐藏的内容
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text = CensorUtil.decensor(text, CensorUtil.MathJs_Replace, math_tag_matches)
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text = CensorUtil.decensor(text, CensorUtil.Mjx_Container_Replace, mjx_tag_matches)
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text = CensorUtil.decensor(text, CensorUtil.Code_Replace, code_tag_matches)
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return text;
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}
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// 初始化-日志工具
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function initDivLog() {
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if (typeof DivLog === 'undefined') {
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window.DivLog = {
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currentLevel: 4,
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levelMap: {debug: 5, info: 4, warn: 3, error: 2, off: 1},
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setLevel(levelStr) {
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this.currentLevel = this.levelMap[levelStr];
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},
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debug(...messages) {
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this._log(this.levelMap.debug, "", ...messages);
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},
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info(...messages) {
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this._log(this.levelMap.info, "", ...messages);
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},
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warn(...messages) {
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this._log(this.levelMap.warn, "orange", ...messages);
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},
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error(...messages) {
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this._log(this.levelMap.error, "red", ...messages);
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},
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_log(minLevel, fontColor, ...messages) {
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if (minLevel > this.currentLevel || messages.length === 0) {
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return;
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}
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const messageDiv = document.createElement("div");
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messageDiv.style.color = fontColor;
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messages[0] = new Date().toLocaleTimeString() + " " + messages[0];
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messages.forEach(message => {
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// 替换数学公式中的界定符号，原样显示，不然会被 anki 替换为公式形状
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if (typeof message === 'string') {
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message = message.replace(/\\\(/g, '\\_(').replace(/\\\[/g, '\\_[');
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}
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messageDiv.appendChild(document.createTextNode(message));
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messageDiv.appendChild(document.createElement("br"));
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});
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messageDiv.appendChild(document.createElement("hr"));
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this._getMsgContainer().appendChild(messageDiv)
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},
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_getMsgContainer() {
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let msgContainer = document.getElementById("msgContainer");
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if (!msgContainer) {
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msgContainer = document.createElement("div");
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msgContainer.id = "msgContainer";
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msgContainer.style.textAlign = "left";
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msgContainer.style.whiteSpace = "pre-wrap";
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// 将日志信息放在最后
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let qa = document.getElementById("qa");
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if (qa) {
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qa.appendChild(msgContainer);
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}
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}
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return msgContainer
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},
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clearLogDiv() {
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const msgContainer = document.getElementById("msgContainer");
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if (msgContainer) {
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msgContainer.remove();
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}
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}
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};
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}
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DivLog.setLevel(config_logLevel || "info");
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DivLog.clearLogDiv();
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}
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/**
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* 初始化-javascript 资源
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* @param scriptUrls 多个资源地址数组
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* @returns {Promise<Awaited<unknown>[]>|Promise<void>}
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*/
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function initScriptResource(scriptUrls) {
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if (typeof markdownit !== 'undefined') {
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DivLog.info("markdown-it is loaded!")
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return Promise.resolve();
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}
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DivLog.info("markdown-it did not load, re-adding triggers loading!")
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return Promise.all(scriptUrls.map(url => {
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return new Promise((resolve, reject) => {
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const script = document.createElement("script");
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script.onload = resolve;
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script.onerror = () => reject(new Error(`Failed to load script from ${url}`));
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script.src = url;
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document.head.appendChild(script);
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});
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})).catch(error => {
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DivLog.error(error);
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throw error;
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});
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}
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// 初始化-markdown-it
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function initAnkiMarkDownIt() {
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DivLog.info("init AnkiMarkDownIt!")
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window.AnkiMarkDownIt = markdownit({
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// 配置参考：https://markdown-it.docschina.org/api/MarkdownIt.html#markdownit-new
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html: true,
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linkify: true,
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breaks: true,
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highlight: function (str, lang) {
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if (lang && hljs.getLanguage(lang)) {
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try {
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return hljs.highlight(str, {language: lang}).value
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} catch (__) {
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}
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}
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return '';
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}
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});
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}
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// 初始化-特殊片段隐藏工具
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function initCensorUtil() {
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if (typeof CensorUtil === 'undefined') {
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window.CensorUtil = {
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Code_Reg: /<code[^>]*>([\s\S]*?)<\/code>/g,
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Code_Replace: "ANKI_CODE_REPLACE",
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// 匹配数学公式转换后： <mjx-container>...</mjx-container>
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Mjx_Container_Reg: /<mjx-container[^>]*>([\s\S]*?)<\/mjx-container>/g,
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Mjx_Container_Replace: "ANKI_MJX_CONTAINER_REPLACE",
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// 匹配数学公式： \[...\] 和 \(...\)
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MathJs_Reg: /(\\\[[\s\S]*?\\])|(\\\([\s\S]*?\\\))/g,
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MathJs_Replace: "ANKI_MATHJS_REPLACE",
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censor: function (note_text, regexp, mask) {
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let matches = [];
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for (let match of note_text.matchAll(regexp)) {
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matches.push(match[0])
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}
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return [note_text.replace(regexp, mask), matches]
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},
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decensor: function (note_text, mask, replacements) {
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for (let replacement of replacements) {
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note_text = note_text.replace(mask, replacement)
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}
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return note_text
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}
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};
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}
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}
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function hideCard() {
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const qa = document.getElementById("qa");
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if (qa) {
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qa.classList.remove("qa-visible");
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}
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}
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function showCard() {
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const qa = document.getElementById("qa");
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if (qa) {
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qa.classList.add("qa-visible");
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}
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}
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</script>
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