强烈谴责fps格式内嵌katex-html，div和stylesheet的行为

packages/fps-importer/handler.ts

@@ -2,17 +2,15 @@
 import path from 'path';
 import os from 'os';
 import fs from 'fs-extra';
-import TurndownService from 'turndown';
 import AdmZip from 'adm-zip';
 import xml2js from 'xml2js';
 import { LocalProblemConfig } from 'hydrooj';
+import { convertHTML } from '@hydrooj/html2md';
 import {
     Route, Handler, param, Types,
 } from 'hydrooj/dist/service/server';
 import { PERM } from 'hydrooj/dist/model/builtin';
 
-const turndownService = new TurndownService();
-
 class FpsProblemImportHandler extends Handler {
     async get() {
         this.response.template = 'problem_import_fps.html';
@@ -28,19 +26,19 @@ class FpsProblemImportHandler extends Handler {
             if (p.description) {
                 content.push(
                     this.translate('problem.import.problem_description'),
-                    p.description.map((i) => turndownService.turndown(i)).join('\n'),
+                    p.description.map(convertHTML).join('\n'),
                 );
             }
             if (p.input) {
                 content.push(
                     this.translate('problem.import.input_format'),
-                    p.input.map((i) => turndownService.turndown(i)).join('\n'),
+                    p.input.map(convertHTML).join('\n'),
                 );
             }
             if (p.output) {
                 content.push(
                     this.translate('problem.import.output_format'),
-                    p.output.map((i) => turndownService.turndown(i)).join('\n'),
+                    p.output.map(convertHTML).join('\n'),
                 );
             }
             if (p.sample_input) {
@@ -60,7 +58,7 @@ class FpsProblemImportHandler extends Handler {
             if (p.hint) {
                 content.push(
                     this.translate('problem.import.hint'),
-                    p.hint.map((i) => turndownService.turndown(i)).join('\n'),
+                    p.hint.map(convertHTML).join('\n'),
                 );
             }
             const config: LocalProblemConfig = {

packages/fps-importer/package.json

@@ -7,14 +7,13 @@
     "author": "undefined <masnn0@outlook.com>",
     "license": "AGPL-3.0-only",
     "dependencies": {
+        "@hydrooj/html2md": "^1.0.0",
         "adm-zip": "^0.4.16",
         "fs-extra": "^9.0.1",
         "hydrooj": "^2.12.22",
-        "turndown": "^6.0.0",
         "xml2js": "^0.4.23"
     },
     "devDependencies": {
-        "@types/turndown": "^5.0.0",
         "@types/xml2js": "^0.4.5"
     },
     "scripts": {

packages/html2md/lib.ts

@@ -0,0 +1,17 @@
+import 'hydrooj';
+import TurndownService from 'turndown';
+import { JSDOM } from 'jsdom';
+
+const turndownService = new TurndownService();
+
+export function convertHTML(html: string) {
+    const DOM = new JSDOM(html);
+    const eles = DOM.window.document.querySelectorAll('span.katex-mathml');
+    eles.forEach((ele) => {
+        const MathML = ele.innerHTML;
+        ele.parentElement.replaceWith(MathML);
+    });
+    return turndownService.turndown(DOM.serialize());
+}
+
+global.Hydro.lib.convertHTML = convertHTML;

packages/html2md/package.json

@@ -0,0 +1,22 @@
+{
+    "name": "@hydrooj/html2md",
+    "version": "1.0.0",
+    "description": "turn html into markdown",
+    "main": "package.json",
+    "repository": "https://github.com/hydro-dev/Hydro.git",
+    "author": "undefined <masnn0@outlook.com>",
+    "license": "AGPL-3.0-only",
+    "dependencies": {
+        "hydrooj": "^2.12.22",
+        "jsdom": "^16.4.0",
+        "turndown": "^6.0.0"
+    },
+    "devDependencies": {
+        "@types/jsdom": "^16.2.3",
+        "@types/turndown": "^5.0.0"
+    },
+    "scripts": {
+        "build": "tsc",
+        "lint": "eslint . --ext ts --fix"
+    }
+}

packages/html2md/tsconfig.json

@@ -0,0 +1,19 @@
+{
+    "compilerOptions": {
+        "target": "es2019",
+        "module": "commonjs",
+        "esModuleInterop": true,
+        "moduleResolution": "node",
+        "declaration": true,
+        "sourceMap": true,
+        "composite": true,
+        "strictBindCallApply": true,
+        "experimentalDecorators": true,
+        "outDir": ".",
+        "rootDir": "."
+    },
+    "include": [
+        "*.ts"
+    ],
+    "exclude": []
+}

tsconfig.json

@@ -14,6 +14,8 @@
         { "path": "packages/hydrooj" },
         { "path": "packages/hydrojudge" },
         { "path": "packages/geoip" },
+        { "path": "packages/html2md" },
+        { "path": "packages/fps-importer" },
         { "path": "packages/login-with-github" },
         { "path": "packages/login-with-google" },
         { "path": "packages/login-with-osu" },