Retour à MarkdownDeep-Av

CommonMarks souffre des différence suivantes :
* pas de support des barrés
* pas de tables

De plus, le support des vidéos et fichiers audio restaient à implémenter.

src/Yavsc/Helpers/Tags/MarkDownTagHelper.cs

@@ -1,11 +1,10 @@
 
 
+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
 {
@@ -33,6 +32,45 @@ 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>
@@ -41,28 +79,28 @@ 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 commonMark, string urlBaseLocation = "")
+        public string Markdown(string text, string urlBaseLocation = "")
         {
             // Transform the supplied text (Markdown) into HTML.
-            string actual;
-            var settings = CommonMarkSettings.Default.Clone();
-            settings.OutputFormat = OutputFormat.Html;
-            settings.AdditionalFeatures |= CommonMarkAdditionalFeatures.StrikethroughTilde;
-
-            Block document;
-
-            // 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;
+            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;
         }
+
+        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;
+        }
+
         public ModelExpression Content { get; set; }
         
         public async override Task ProcessAsync(TagHelperContext context, TagHelperOutput output)

src/Yavsc/project.json

@@ -75,7 +75,7 @@
     "defaultNamespace": "Yavsc"
   },
   "dependencies": {
-    "ya.CommonMark.NET": "0.11.0",
+    "MarkdownDeep-av.NET": "1.5.26",
     "EntityFramework.Commands": "7.0.0-rc1-final",
     "EntityFramework.Core": "7.0.0-rc1-final",
     "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",