MarkdownDeep-av.NET => CommonMark.

src/Yavsc/Helpers/Tags/MarkDownTagHelper.cs

@@ -1,10 +1,11 @@
 
 
-using System.Text.RegularExpressions;
 using System.Threading.Tasks;
-using MarkdownDeep;
 using Microsoft.AspNet.Mvc.Rendering;
 using Microsoft.AspNet.Razor.TagHelpers;
+using CommonMark;
+using CommonMark.Syntax;
+using System.IO;
 
 namespace Yavsc.TagHelpers
 {
@@ -32,45 +33,6 @@ namespace Yavsc.TagHelpers
         [HtmlAttributeName(MarkdownContentAttributeName)]
         public string MarkdownContent { get; set; }
 
-        static Regex rxExtractLanguage = new Regex("^({{(.+)}}[\r\n])", RegexOptions.Compiled);
-        private static string FormatCodePrettyPrint(MarkdownDeep.Markdown m, string code)
-        {
-            // Try to extract the language from the first line
-            var match = rxExtractLanguage.Match(code);
-            string language = null;
-
-            if (match.Success)
-            {
-                // Save the language
-                var g = (Group)match.Groups[2];
-                language = g.ToString();
-
-                // Remove the first line
-                code = code.Substring(match.Groups[1].Length);
-            }
-
-            // If not specified, look for a link definition called "default_syntax" and
-            // grab the language from its title
-            if (language == null)
-            {
-                var d = m.GetLinkDefinition("default_syntax");
-                if (d != null)
-                    language = d.title;
-            }
-
-            // Common replacements
-            if (language == "C#")
-                language = "csharp";
-            if (language == "C++")
-                language = "cpp";
-
-            // Wrap code in pre/code tags and add PrettyPrint attributes if necessary
-            if (string.IsNullOrEmpty(language))
-                return string.Format("<pre><code>{0}</code></pre>\n", code);
-            else
-                return string.Format("<pre class=\"prettyprint lang-{0}\"><code>{1}</code></pre>\n",
-                    language.ToLowerInvariant(), code);
-        }
 
 
         /// <summary>
@@ -79,28 +41,27 @@ namespace Yavsc.TagHelpers
         /// <param name="text">The Markdown that should be transformed.</param>
         /// <param name="urlBaseLocation">The url Base Location.</param>
         /// <returns>The HTML representation of the supplied Markdown.</returns>
-        public string Markdown(string text, string urlBaseLocation = "")
+        public string Markdown(string commonMark, string urlBaseLocation = "")
         {
             // Transform the supplied text (Markdown) into HTML.
-            var markdownTransformer = GetMarkdownTransformer();
-            markdownTransformer.UrlBaseLocation = urlBaseLocation;
-            string html = markdownTransformer.Transform(text);
-            // Wrap the html in an MvcHtmlString otherwise it'll be HtmlEncoded and displayed to the user as HTML :(
-            return html;
-        }
+            string actual;
+            var settings = CommonMarkSettings.Default.Clone();
+            settings.OutputFormat = OutputFormat.Html;
+            // settings.PrologueLineHandler = null;
+            Block document;
 
-        internal Markdown GetMarkdownTransformer()
-        {
-            var markdownTransformer = new Markdown();
-            markdownTransformer.ExtraMode = true;
-            markdownTransformer.NoFollowLinks = true;
-            markdownTransformer.SafeMode = false;
-            markdownTransformer.FormatCodeBlock = FormatCodePrettyPrint;
-            markdownTransformer.ExtractHeadBlocks = true;
-            markdownTransformer.UserBreaks = true;
-            return markdownTransformer;
+            // Act
+            using (var reader = new StringReader(commonMark))
+            using (var writer = new StringWriter())
+            {
+                var prologue = CommonMarkConverter.ProcessPrologue(reader, settings);
+                document = CommonMarkConverter.ProcessStage1(reader, settings, prologue);
+                CommonMarkConverter.ProcessStage2(document, settings);
+                CommonMarkConverter.ProcessStage3(document, writer, settings);
+                actual = writer.ToString();
+            }
+            return actual;
         }
-
         public ModelExpression Content { get; set; }
         
         public async override Task ProcessAsync(TagHelperContext context, TagHelperOutput output)

src/Yavsc/project.json

@@ -75,6 +75,7 @@
     "defaultNamespace": "Yavsc"
   },
   "dependencies": {
+    "CommonMark": "0.11.0",
     "EntityFramework.Commands": "7.0.0-rc1-final",
     "EntityFramework.Core": "7.0.0-rc1-final",
     "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
@@ -82,7 +83,6 @@
     "EntityFramework7.Npgsql": "3.1.0-rc1-3",
     "EntityFramework7.Npgsql.Design": "3.1.0-rc1-5",
     "MailKit": "1.12.0",
-    "MarkdownDeep-av.NET": "1.5.8",
     "Microsoft.AspNet.Authentication.Cookies": "1.0.0-rc1-final",
     "Microsoft.AspNet.Authentication.Facebook": "1.0.0-rc1-final",
     "Microsoft.AspNet.Authentication.Twitter": "1.0.0-rc1-final",