Enabled translation of Symbol and Windings font

Symbol and Wingdings font causes issues on rendering the resulting html without these fonts available. These release implements a translation of chars that would be rendered using Symbol or Wingdings to unicode.

Author: stesee

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "ms-dotnettools.csharp"
+    ]
+}

.vscode/settings.json

@@ -8,5 +8,6 @@
         "Rgba",
         "nupkg",
         "snupkg"
-    ]
+    ],
+    "editor.formatOnSave": true
 }

OpenXmlToHtml/OpenXmlToHtml.cs

@@ -19,7 +19,7 @@ public static class OpenXmlToHtml
         /// </summary>
         /// <param name="sourceOpenXmlFilePath"></param>
         /// <param name="destinationHtmlFilePath"></param>
-        /// <returns></returns>
+        /// <returns>selfContainedHtmlFilePath</returns>
         public static async Task ConvertToHtmlAsync(string sourceOpenXmlFilePath, string destinationHtmlFilePath)
         {
             if (!File.Exists(sourceOpenXmlFilePath))
@@ -33,11 +33,12 @@ public static async Task ConvertToHtmlAsync(string sourceOpenXmlFilePath, string
             await html.CopyToAsync(destinationHtmlFile).ConfigureAwait(false);
         }
 
+
         /// <summary>
         /// Converts docx to html
         /// </summary>
         /// <param name="sourceOpenXml"></param>
-        /// <returns></returns>
+        /// <returns>selfContainedHtml</returns>
         public static Task<Stream> ConvertToHtmlAsync(Stream sourceOpenXml)
         {
             return ConvertToHtmlAsync(sourceOpenXml, string.Empty);
@@ -48,7 +49,7 @@ public static Task<Stream> ConvertToHtmlAsync(Stream sourceOpenXml)
         /// </summary>
         /// <param name="sourceOpenXml"></param>
         /// <param name="fallbackPageTitle"></param>
-        /// <returns></returns>
+        /// <returns>selfContainedHtml</returns>
         public static Task<Stream> ConvertToHtmlAsync(Stream sourceOpenXml, string fallbackPageTitle)
         {
             if (sourceOpenXml == null)
@@ -72,7 +73,7 @@ private static async Task<Stream> ConvertToHtmlInternalAsync(Stream sourceOpenXm
 
             var htmlElement = WmlToHtmlConverter.ConvertToHtml(wordProcessingDocument, CreateHtmlConverterSettings(pageTitle));
 
-            var html = new XDocument(new XDocumentType("html", null, null, null), htmlElement);
+            var html = new XDocument(new XDocumentType("html", String.Empty, String.Empty, String.Empty), htmlElement);
 
             var memoryStreamHtml = new MemoryStream();
             html.Save(memoryStreamHtml);
@@ -82,8 +83,9 @@ private static async Task<Stream> ConvertToHtmlInternalAsync(Stream sourceOpenXm
 
         private static WmlToHtmlConverterSettings CreateHtmlConverterSettings(string pageTitle)
         {
-            var settings = new WmlToHtmlConverterSettings(new DefaultImageHandler(), new WordprocessingTextSymbolToUnicodeHandler())
+            var settings = new WmlToHtmlConverterSettings(new DefaultImageHandler(), new WordprocessingTextSymbolToUnicodeHandler(), new SymbolHandler())
             {
+                GeneralCss = string.Empty,
                 AdditionalCss = "@page { size: A4 } body { margin: 1cm auto; max-width: 20cm; padding: 0; }",
                 PageTitle = pageTitle,
                 FabricateCssClasses = true,

OpenXmlToHtml/OpenXmlToHtml.csproj

@@ -35,8 +35,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="all" />
-    <PackageReference Include="OpenXmlPowerToolsStandard" Version="5.0.51-prerelease" />
-    <PackageReference Include="SonarAnalyzer.CSharp" Version="8.16.0.25740">
+    <PackageReference Include="OpenXmlPowerToolsStandard" Version="5.0.57-prerelease" />
+    <PackageReference Include="SonarAnalyzer.CSharp" Version="8.17.0.26580">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>