Added syntax highlighting to preview & PDF

MarkdownToRW/MarkdownConverter/DragonConverter/Converter.cs

@@ -24,15 +24,16 @@ public static string ConvertMarkdownStringToHtml(string markdown, ConverterOptio
             string output = Markdown.ToHtml(markdown, pipeline);
             //Console.WriteLine(output);
 
-
-
             // HTML readability improvements & RW specific changes
 
             // Code
-            output = output.Replace("<pre><code class=", "\r\n<pre lang=");
-            output = output.Replace("lang-", "");
-            output = output.Replace("language-", "");
-            output = output.Replace("</code></pre>", "</pre>\r\n");
+            if (!prepareForPreview)
+            {
+                output = output.Replace("<pre><code class=", "\r\n<pre lang=");
+                output = output.Replace("lang-", "");
+                output = output.Replace("language-", "");
+                output = output.Replace("</code></pre>", "</pre>\r\n");
+            }
 
             // Add attributes
             AddClassToImages(ref output, options.FirstImageIsAlignedRight, rootPath);
@@ -68,7 +69,6 @@ public static string ConvertMarkdownStringToHtml(string markdown, ConverterOptio
             // Spoiler
             ConvertSpoilers(ref output);
 
-
             if (options.ReplaceImageWithAltWithCaption)
             {
                 ConvertImagesWithAltToCaptions(ref output);

MarkdownToRW/MarkdownConverter/DragonConverter/PdfConverter.cs

@@ -1,8 +1,10 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Text;
 using DinkToPdf;
 using DinkToPdf.EventDefinitions;
+using DragonMarkdown.Utility;
 
 namespace DragonMarkdown.DragonConverter
 {
@@ -22,19 +24,26 @@ public static void ConvertToPdf(string html, string ouputPath)
                     ColorMode = ColorMode.Color,
                     Orientation = Orientation.Portrait,
                     PaperSize = PaperKind.A4Plus,
-                    Out = ouputPath,
                 },
                 Objects = {
                     new ObjectSettings() {
                         PagesCount = true,
                         HtmlContent = html,
                         WebSettings = { DefaultEncoding = "utf-8" },
                         HeaderSettings = { FontSize = 9, Left = "My Amazing Title", Right = "Page [page] of [toPage]", Line = true, Spacing = 2.812 },
+                        FooterSettings = { FontSize = 9, Left = "My Amazing Title", Right = "Page [page] of [toPage]", Line = true, Spacing = 2.812 },
                     }
                 }
             };
 
-            converter.Convert(doc);
+            Console.WriteLine("Saving PDF to " + ouputPath);
+
+            byte[] pdf = converter.Convert(doc);
+
+            using (FileStream stream = new FileStream(ouputPath, FileMode.Create))
+            {
+                stream.Write(pdf, 0, pdf.Length);
+            }
         }
 
         private static void ConverterOnProgressChanged(object sender, ProgressChangedArgs progressChangedArgs)

MarkdownToRW/MarkdownConverter/DragonMarkdown.csproj

@@ -39,6 +39,15 @@
   </ItemGroup>
 
   <ItemGroup>
+    <None Update="js_highlight\highlight.pack.js">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="js_highlight\styles\atom-one-light.css">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Update="js_highlight\styles\default.css">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
     <None Update="libwkhtmltox.dll">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>

MarkdownToRW/MarkdownConverter/PreviewCreator.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Net;
@@ -12,16 +13,16 @@ namespace DragonMarkdown
 {
     public class PreviewCreator
     {
-        public static string CreateHtmlPreviewFromMarkdown(string markdown)
+        public static string CreateHtmlPreviewFromMarkdown(string markdown, string markdownFolder)
         {
             string output = "";
 
-            output = PrepareHtmlForPreview(Converter.ConvertMarkdownStringToHtml(markdown, prepareForPreview: true));
+            output = PrepareHtmlForPreview(Converter.ConvertMarkdownStringToHtml(markdown, prepareForPreview: true), markdownFolder);
 
             return output;
         }
 
-        private static string PrepareHtmlForPreview(string html)
+        private static string PrepareHtmlForPreview(string html, string markdownFolder)
         {
             string output = html;
 
@@ -31,6 +32,17 @@ private static string PrepareHtmlForPreview(string html)
             output += "</div></body></html>";
 
             FixCode(ref output);
+            ReplaceImageSources(ref output, markdownFolder);
+
+            // Syntax Highlighting
+            //output = output.Replace("!!!DEFAULT_CSS_PATH!!!", "file://" + Path.GetFullPath("js_highlight/styles/default.css"));
+            output = output.Replace("!!!DEFAULT_CSS_PATH!!!", "file://" + Path.GetFullPath("js_highlight/styles/atom-one-light.css"));
+            output = output.Replace("!!!PACK_JS_PATH!!!", "file://" + Path.GetFullPath("js_highlight/highlight.pack.js"));
+
+            // PDF
+            output = output.Replace("$[=p=]", "<div class=\"pb_after\"></div>");
+            output = output.Replace("$[===]", "");
+            output = output.Replace("$[=s=]", "");
 
             return output;
         }
@@ -53,15 +65,31 @@ private static void FixCode(ref string html)
                     codeNode.ReplaceChildHtml(newHtml);
                 }
             }
-            
+
             html = doc.DocumentNode.OuterHtml;
         }
 
+        private static void ReplaceImageSources(ref string html, string folder)
+        {
+            var imageData = Converter.FindAllImageLinksInHtml(html, folder);
+
+            List<string> localPaths = new List<string>();
+            List<string> fullPaths = new List<string>();
+
+            foreach (ImageLinkData data in imageData)
+            {
+                localPaths.Add(data.LocalImagePath);
+                fullPaths.Add(data.FullImagePath);
+            }
+
+            html = DragonUtil.BatchReplaceText(html, localPaths, fullPaths);
+        }
+
         public static void CreateHtmlPreviewFileFromMarkdown(string markdown, string filePath)
         {
             using (StreamWriter sw = new StreamWriter(filePath))
             {
-                sw.Write(CreateHtmlPreviewFromMarkdown(markdown));
+                sw.Write(CreateHtmlPreviewFromMarkdown(markdown, Path.GetDirectoryName(filePath)));
                 sw.Flush();
                 sw.Close();
             }

MarkdownToRW/MarkdownConverter/Utility/PreviewHelper.cs

@@ -5,11 +5,25 @@ public static class PreviewHelper
         public static string css = "<!DOCTYPE html>" +
                                    "<html>" +
                                    "<head>" +
+                                   "<link rel=\"stylesheet\" href=\"!!!DEFAULT_CSS_PATH!!!\">" +
+                                   "<script src=\"!!!PACK_JS_PATH!!!\"></script>" +
+                                   "<script>hljs.configure(); hljs.initHighlightingOnLoad();</script>" +
                                    "<style>" +
                                    "* {" +
                                    " font-size: 100%;" +
                                    " font-family: Bitter,Georgia,serif" +
                                    "}" +
+                                   "/* Page Breaks */" +
+                                   "/***Always insert a page break before the element***/" +
+                                   ".pb_before {page-break-before: always !important;}" +
+                                   "/***Always insert a page break after the element***/" +
+                                   ".pb_after {page-break-after: always !important;}" +
+                                   "/***Avoid page break before the element (if possible)***/" +
+                                   ".pb_before_avoid {page-break-before: avoid !important;}" +
+                                   "/***Avoid page break after the element (if possible)***/" +
+                                   ".pb_after_avoid {page-break-after: avoid !important;}" +
+                                   "/* Avoid page break inside the element (if possible) */" +
+                                   ".pbi_avoid {page-break-inside: avoid !important;}" +
                                    "div.content { width: 860px }" +
                                    "img {" +
                                    "    display: block;" +
@@ -58,4 +72,5 @@ public static class PreviewHelper
                                    "<body>" +
                                    "<div class=\"content\">";
     }
+
 }