Added automatic caption generation & example (hell yeah!)

ConverterTests/FullTest.markdown

@@ -40,6 +40,10 @@ Lots of formats are supported, including GIFs of course:
 
 ![](Images/nigel.gif)
 
+You can add an alt text by writing it between the square brackets. MarkdownToRW will convert these into captions (and the alt is preserved as well):
+
+![The stare of Doge penetrates your soul. Why aren't you doing your work?](Images/doge.jpg)
+
 Make sure to add a separate child folder of the folder your markdown is in, you can easily use subfolders in links and images.
 The converter can find all locally sourced images, upload them to WordPress and replace the local paths with the image URLs.
 

MarkdownToRW/MarkdownConverter/DragonConverter/Converter.cs

@@ -65,6 +65,7 @@ public static string ConvertMarkdownStringToHtml(string markdown, ConverterOptio
 
             // Spoiler
             ConvertSpoilers(ref output);
+            ConvertImagesWithAltToCaptions(ref output);
 
             // Final cleanup
             output = output.Replace("<div></div>", "");
@@ -73,7 +74,8 @@ public static string ConvertMarkdownStringToHtml(string markdown, ConverterOptio
             return output;
         }
 
-        public static void ConvertMarkdownFileToHtmlFile(string markdownFilePath, string htmlFilePath, ConverterOptions options = null)
+        public static void ConvertMarkdownFileToHtmlFile(string markdownFilePath, string htmlFilePath,
+            ConverterOptions options = null)
         {
             using (StreamReader sr = new StreamReader(markdownFilePath))
             {
@@ -142,6 +144,39 @@ private static void AddExtraAttributesToLinks(ref string html)
             html = doc.DocumentNode.OuterHtml;
         }
 
+        private static void ConvertImagesWithAltToCaptions(ref string html)
+        {
+            HtmlDocument doc = new HtmlDocument();
+            doc.LoadHtml(html);
+            HtmlNodeCollection imgNodes = doc.DocumentNode.SelectNodes("//img");
+
+            if (imgNodes == null || imgNodes.Count == 0)
+            {
+                return;
+            }
+
+            foreach (HtmlNode imgNode in imgNodes)
+            {
+                if (imgNode.Attributes["alt"].Value != "")
+                {
+                    HtmlNode parent = imgNode.ParentNode;
+
+                    HtmlDocument newDoc = new HtmlDocument();
+                    HtmlNode newElement = newDoc.CreateElement("caption");
+                    newElement.SetAttributeValue("align", imgNode.Attributes["class"].Value);
+                    newElement.AppendChild(imgNode);
+                    newElement.InnerHtml += imgNode.Attributes["alt"].Value;
+
+                    parent.ReplaceChild(newElement, imgNode);
+
+                    ReplaceOuterHtmlWithSquareBrackets(newElement);
+
+                }
+            }
+
+            html = doc.DocumentNode.OuterHtml;
+        }
+
         private static void ConvertSpoilers(ref string html)
         {
             HtmlDocument doc = new HtmlDocument();
@@ -162,18 +197,7 @@ private static void ConvertSpoilers(ref string html)
                     divNode.Attributes.Add("title", spoilerTitle);
                     divNode.Name = "spoiler";
 
-                    string inner = divNode.InnerHtml;
-                    string newOuter = divNode.OuterHtml;
-
-                    newOuter = newOuter.Replace(inner, "");
-                    newOuter = newOuter.Replace("<", "[");
-                    newOuter = newOuter.Replace(">", "]");
-                    //newOuter = newOuter.Replace("INNER", inner);
-
-                    var newNode = HtmlNode.CreateNode(newOuter);
-                    newNode.InnerHtml = newNode.InnerHtml.Replace("][", "]" + inner.Trim() + "[");
-                    divNode.ParentNode.ReplaceChild(newNode, divNode);
-
+                    ReplaceOuterHtmlWithSquareBrackets(divNode);
                 }
             }
 
@@ -241,15 +265,27 @@ public static string ReplaceLocalImageLinksWithUrls(string markdownPath, string
 
             return markdownText;
         }
-    }
 
+        private static void ReplaceOuterHtmlWithSquareBrackets(HtmlNode node)
+        {
+            string inner = node.InnerHtml;
+            string newOuter = node.OuterHtml;
+
+            newOuter = newOuter.Replace(inner, "");
+            newOuter = newOuter.Replace("<", "[");
+            newOuter = newOuter.Replace(">", "]");
+            //newOuter = newOuter.Replace("INNER", inner);
+
+            var newNode = HtmlNode.CreateNode(newOuter);
+            newNode.InnerHtml = newNode.InnerHtml.Replace("][", "]" + inner.Trim() + "[");
+            node.ParentNode.ReplaceChild(newNode, node);
+        }
+    }
 
 
     public struct ImageLinkData
     {
         public string FullImagePath;
         public string LocalImagePath;
     }
-
-
 }