Initial Argus web catalog

Infrastructure/SlugUtility.cs

@@ -0,0 +1,40 @@
+using System.Text;
+
+namespace Argus.Infrastructure;
+
+public static class SlugUtility
+{
+    public static string Normalize(string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value))
+        {
+            return string.Empty;
+        }
+
+        var builder = new StringBuilder(value.Length);
+        var lastWasHyphen = false;
+
+        foreach (var character in value.Trim().ToLowerInvariant())
+        {
+            if (char.IsLetterOrDigit(character))
+            {
+                builder.Append(character);
+                lastWasHyphen = false;
+                continue;
+            }
+
+            if (!lastWasHyphen)
+            {
+                builder.Append('-');
+                lastWasHyphen = true;
+            }
+        }
+
+        return builder.ToString().Trim('-');
+    }
+
+    public static bool IsValid(string? value) =>
+        !string.IsNullOrWhiteSpace(value) &&
+        value.Length <= 100 &&
+        string.Equals(value, Normalize(value), StringComparison.Ordinal);
+}