测试语法高亮的 C# 代码的 html fragment 生成

测试语法高亮的 C# 代码的 html fragment 生成:

用csdn blog API 发布.

下面是:

public class HtmlWriter
{
   static Dictionary<string, int> _colors;
   static int _colorNum;
   static StringBuilder _colorString;

   /// <summary>
   /// 
   /// </summary>
   /// <param name="textArea"></param>
   /// <returns></returns>
   public static string GenerateRtf(TextArea textArea)
   {
     _colors = new Dictionary<string, int>();
     _colorNum = 0;
     _colorString = new StringBuilder();

     StringBuilder htmlBuilder = new StringBuilder();

     htmlBuilder.AppendLine("

 style=/"font-size:8pt;font-family:courier;border:2px solid blue/">");
     string fileContent = BuildFileContent(textArea);
     //htmlBuilder.Append(@"/viewkind4/uc1/pard");
     htmlBuilder.Append(fileContent);
     htmlBuilder.AppendLine("

");
     return htmlBuilder.ToString();
   }

   static string BuildFileContent(TextArea textArea)
   {
     StringBuilder htmlBuilder = new StringBuilder();
     foreach (ISelection selection in textArea.SelectionManager.SelectionCollection) {
       int selectionOffset = textArea.Document.PositionToOffset(selection.StartPosition);
       int selectionEndOffset = textArea.Document.PositionToOffset(selection.EndPosition);
       for (int i = selection.StartPosition.Y; i <= selection.EndPosition.Y; ++i) {
         LineSegment line = textArea.Document.GetLineSegment(i);
         int offset = line.Offset;
         bool lineStart = true;
         if (line.Words == null)
         {
           continue;
         }
         int delimeter = line.DelimiterLength;
         foreach (TextWord word in line.Words) {
           switch (word.Type) {
             case TextWordType.Space:
               if (lineStart)
               {
                 htmlBuilder.Append("  ");
               }
               else htmlBuilder.Append(" "); 
               ++offset;
               break;
             case TextWordType.Tab:

               if (selection.ContainsOffset(offset))
               {
                 htmlBuilder.Append("    ");
               }

               ++offset;
               break;
             case TextWordType.Word:

               #region word
               Color c = word.Color;

               if (offset + word.Word.Length > selectionOffset && offset < selectionEndOffset)
               {
                 string colorstr = ColorToHtml(c);
                 // c.R + ", " + c.G + ", " + c.B;
                 htmlBuilder.Append("");
                 htmlBuilder.Append(" style=/"color:" + colorstr);
                 if (word.Font.Italic)
                 {
                   htmlBuilder.Append("; font-style:italic");
                 }
                 if (word.Font.Bold)
                 {
                   htmlBuilder.Append("; font-weight:bold");
                 }
                 htmlBuilder.Append("/">");

                 string printWord;
                 if (offset < selectionOffset)
                 {
                   printWord = word.Word.Substring(selectionOffset - offset);
                 }
else if (offset + word.Word.Length > selectionEndOffset) {
                   printWord = word.Word.Substring(0, (offset + word.Word.Length) - selectionEndOffset);
                 }
                 else
                 {
                   printWord = word.Word;
                 }

                 htmlBuilder.Append(printWord.Replace("<", "<").Replace(">", ">"));
                 htmlBuilder.Append("");
               }

               offset += word.Length;
               #endregion
               break;
           }
           lineStart = false;
         }
         if (offset < selectionEndOffset)
         {
           htmlBuilder.Append("
 />");
         }
         htmlBuilder.Append('/n');
       }
     }
     // foreach ISelection
     return htmlBuilder.ToString();
   }

   static string ColorToHtml(Color c)
   {
     return "#" + c.R.ToString("X2", null) + c.G.ToString("X2", null) + c.B.ToString("X2", null);
   }
}