text: ﻿#region Copyright and license
  // /*
  // The MIT License (MIT)
  // 
  // Copyright (c) 2014 BlackJet Software Ltd
  // 
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  // 
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  // */
  #endregion
  using System.Text;
  
  namespace MarkdownLog
  {
      public abstract class HeaderBase : MarkdownElement
      {
          private readonly char _underlineChar;
          private readonly string _text = "";
  
          protected HeaderBase(string text, char underlineChar)
          {
              _text = text ?? "";
              _underlineChar = underlineChar;
          }
  
          public override string ToMarkdown()
          {
              var builder = new StringBuilder();
  
              var textLines = _text.SplitByLine();
  
              foreach(var textLine in textLines)
              {
                  if (builder.Length > 0)
                      builder.AppendLine();
  
                  var markdown = textLine.EscapeMarkdownCharacters();
                  builder.Append(markdown);
                  builder.AppendLine();
                  builder.Append(new string(_underlineChar, markdown.Length));
                  builder.AppendLine();
              }
  
              return builder.ToString();
          }
      }
  }