MarkdownDeep.Markdown.OnQualifyUrl C# (CSharp) Method

        public virtual string OnQualifyUrl(string url)
        {
            if (QualifyUrl != null)
            {
                var q = QualifyUrl(url);
                if (q != null)
                    return url;
            }

            // Quit if we don't have a base location
            if (String.IsNullOrEmpty(UrlBaseLocation))
                return url;

            // Is the url a fragment?
            if (url.StartsWith("#"))
                return url;

            // Is the url already fully qualified?
            if (Utils.IsUrlFullyQualified(url))
                return url;

            if (url.StartsWith("/"))
            {
                if (!string.IsNullOrEmpty(UrlRootLocation))
                {
                    return UrlRootLocation + url;
                }

                // Need to find domain root
                int pos = UrlBaseLocation.IndexOf("://");
                if (pos == -1)
                    pos = 0;
                else
                    pos += 3;

                // Find the first slash after the protocol separator
                pos = UrlBaseLocation.IndexOf('/', pos);

                // Get the domain name
                string strDomain=pos<0 ? UrlBaseLocation : UrlBaseLocation.Substring(0, pos);

                // Join em
                return strDomain + url;
            }
            else
            {
                if (!UrlBaseLocation.EndsWith("/"))
                    return UrlBaseLocation + "/" + url;
                else
                    return UrlBaseLocation + url;
            }
        }