添加项目文件。

TightWiki.Library/Navigation.cs

@@ -0,0 +1,58 @@
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace TightWiki.Library
+{
+    public class Navigation
+    {
+        public static string Clean(string? str)
+        {
+            if (str == null)
+            {
+                return string.Empty;
+            }
+
+            //Fix names like "::Page" or "Namespace::".
+            str = str.Trim().Trim([':']).Trim();
+
+            if (str.Contains("::"))
+            {
+                throw new Exception("Navigation can not contain a namespace.");
+            }
+
+            // Decode common HTML entities
+            str = str.Replace(""", "\"")
+                     .Replace("&", "&")
+                     .Replace("&lt;", "<")
+                     .Replace("&gt;", ">")
+                     .Replace("&nbsp;", " ");
+
+            // Normalize backslashes to forward slashes
+            str = str.Replace('\\', '/');
+
+            // Replace special sequences
+            str = str.Replace("::", "_").Trim();
+
+            var sb = new StringBuilder();
+            foreach (char c in str)
+            {
+                if (char.IsWhiteSpace(c) || c == '.')
+                {
+                    sb.Append('_');
+                }
+                else if (char.IsLetterOrDigit(c) || c == '_' || c == '/' || c == '-')
+                {
+                    sb.Append(c);
+                }
+            }
+
+            string result = sb.ToString();
+
+            // Remove multiple consecutive underscores or slashes
+            result = Regex.Replace(result, @"[_]{2,}", "_");
+            result = Regex.Replace(result, @"[/]{2,}", "/");
+
+            return result.ToLower();
+        }
+    }
+}