add parsedown for markdown-usage in a few cases

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

composer.json

@@ -50,7 +50,8 @@
 		"robthree/twofactorauth": "^1.6",
 		"froxlor/idna-convert-legacy": "^2.1",
 		"voku/anti-xss": "^4.1",
-		"twig/twig": "^3.3"
+		"twig/twig": "^3.3",
+		"erusev/parsedown": "^1.7"
     },
 	"require-dev": {
 		"phpunit/phpunit": "^9",

composer.lock

@@ -4,8 +4,58 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "a54c08743cff0b7b272aae81fdab796c",
+    "content-hash": "51513cb9d850aec753c740ee37871430",
     "packages": [
+        {
+            "name": "erusev/parsedown",
+            "version": "1.7.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/erusev/parsedown.git",
+                "reference": "cb17b6477dfff935958ba01325f2e8a2bfa6dab3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/erusev/parsedown/zipball/cb17b6477dfff935958ba01325f2e8a2bfa6dab3",
+                "reference": "cb17b6477dfff935958ba01325f2e8a2bfa6dab3",
+                "shasum": ""
+            },
+            "require": {
+                "ext-mbstring": "*",
+                "php": ">=5.3.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.35"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Parsedown": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Emanuil Rusev",
+                    "email": "hello@erusev.com",
+                    "homepage": "http://erusev.com"
+                }
+            ],
+            "description": "Parser for Markdown.",
+            "homepage": "http://parsedown.org",
+            "keywords": [
+                "markdown",
+                "parser"
+            ],
+            "support": {
+                "issues": "https://github.com/erusev/parsedown/issues",
+                "source": "https://github.com/erusev/parsedown/tree/1.7.x"
+            },
+            "time": "2019-12-30T22:54:17+00:00"
+        },
         {
             "name": "froxlor/idna-convert-legacy",
             "version": "v2.1.2",

lib/Froxlor/UI/Panel/FroxlorTwig.php

@@ -21,7 +21,11 @@ class FroxlorTwig extends \Twig\Extension\AbstractExtension
 			new \Twig\TwigFilter('idnDecode', array(
 				$this,
 				'idnDecodeFilter'
-			))
+			)),
+			new \Twig\TwigFilter('parsedown', [
+				$this,
+				'callParsedown'
+			])
 		);
 	}
 
@@ -100,6 +104,12 @@ class FroxlorTwig extends \Twig\Extension\AbstractExtension
 		return \Froxlor\UI\Panel\UI::getLinker()->getLink($linkopts);
 	}
 
+	public function callParsedown($string)
+	{
+		$pd = new \Parsedown();
+		return $pd->line($string);
+	}
+
 	/**
 	 *
 	 * {@inheritdoc}