src/MarkdownOptions.cs

using System;
using System.Collections.Specialized;
using System.Configuration;
using System.Runtime.CompilerServices;
using System.Web.Configuration;

namespace MarkdownSharp
{
    public class MarkdownOptions
    {
        public MarkdownOptions() : this(true) { }

        public MarkdownOptions(bool loadFromConfigFile) 
            : this(loadFromConfigFile, new[] { ConfigurationManager.AppSettings, WebConfigurationManager.AppSettings })
        {
        }


        internal MarkdownOptions(bool loadFromConfigFile, NameValueCollection[] configProviders)
        {
            Defaults();
            if (!loadFromConfigFile) return;


            foreach (var appSettings in configProviders)
            {
                foreach (string key in appSettings.Keys)
                {
                    switch (key)
                    {
                        case "Markdown.AutoHyperlink":
                            AutoHyperlink = Convert.ToBoolean(appSettings[key]);
                            break;
                        case "Markdown.AutoNewlines":
                            AutoNewlines = Convert.ToBoolean(appSettings[key]);
                            break;
                        case "Markdown.EmptyElementSuffix":
                            EmptyElementSuffix = appSettings[key];
                            break;
                        case "Markdown.EncodeProblemUrlCharacters":
                            EncodeProblemUrlCharacters = Convert.ToBoolean(appSettings[key]);
                            break;
                        case "Markdown.LinkEmails":
                            LinkEmails = Convert.ToBoolean(appSettings[key]);
                            break;
                        case "Markdown.NestDepth":
                            NestDepth = Convert.ToInt32(appSettings[key]);
                            break;
                        case "Markdown.StrictBoldItalic":
                            StrictBoldItalic = Convert.ToBoolean(appSettings[key]);
                            break;
                        case "Markdown.TabWidth":
                            TabWidth = Convert.ToInt32(appSettings[key]);
                            break;
                    }
                }
            }    
        }


        public MarkdownOptions(bool autoHyperlink, bool autoNewlines, string emptyElementsSuffix, 
            bool encodeProblemUrlCharacters, bool linkEmails, int nestDepth, bool strictBoldItalic, 
            int tabWidth)
        {
            AutoHyperlink = autoHyperlink;
            AutoNewlines = autoNewlines;
            EmptyElementSuffix = emptyElementsSuffix;
            EncodeProblemUrlCharacters = encodeProblemUrlCharacters;
            LinkEmails = linkEmails;
            NestDepth = nestDepth;
            StrictBoldItalic = strictBoldItalic;
            TabWidth = tabWidth;
        }

        private void Defaults()
        {
            AutoHyperlink = false;
            AutoNewlines = false;
            EmptyElementSuffix = " />";
            EncodeProblemUrlCharacters = false;
            LinkEmails = true;
            NestDepth = 6;
            StrictBoldItalic = false;
            TabWidth = 4;
        }

        public bool AutoHyperlink { get; private set; }

        public bool AutoNewlines { get; private set; }

        public string EmptyElementSuffix { get; private set; }

        public bool EncodeProblemUrlCharacters { get; private set; }

        public bool LinkEmails { get; private set; }

        public int NestDepth { get; private set; }

        public bool StrictBoldItalic { get; private set; }

        public int TabWidth { get; private set; }
    }
}