ConGroups are gone. Long live admin flags in content.

Content.Shared/Administration/AdminFlagsExt.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+
+namespace Content.Shared.Administration
+{
+    public static class AdminFlagsExt
+    {
+        private static readonly Dictionary<string, AdminFlags> NameFlagsMap = new Dictionary<string, AdminFlags>();
+        private static readonly string[] FlagsNameMap = new string[32];
+
+        public static readonly AdminFlags Everything;
+
+        static AdminFlagsExt()
+        {
+            var t = typeof(AdminFlags);
+            var flags = (AdminFlags[]) Enum.GetValues(t);
+
+            foreach (var value in flags)
+            {
+                var name = value.ToString().ToUpper();
+
+                if (BitOperations.PopCount((uint) value) != 1)
+                {
+                    continue;
+                }
+
+                Everything |= value;
+                NameFlagsMap.Add(name, value);
+                FlagsNameMap[BitOperations.Log2((uint) value)] = name;
+            }
+        }
+
+        public static AdminFlags NamesToFlags(IEnumerable<string> names)
+        {
+            var flags = AdminFlags.None;
+            foreach (var name in names)
+            {
+                if (!NameFlagsMap.TryGetValue(name, out var value))
+                {
+                    throw new ArgumentException($"Invalid admin flag name: {name}");
+                }
+
+                flags |= value;
+            }
+
+            return flags;
+        }
+
+        public static AdminFlags NameToFlag(string name)
+        {
+            return NameFlagsMap[name];
+        }
+
+        public static string[] FlagsToNames(AdminFlags flags)
+        {
+            var array = new string[BitOperations.PopCount((uint) flags)];
+            var highest = BitOperations.LeadingZeroCount((uint) flags);
+
+            var ai = 0;
+            for (var i = 0; i < 32 - highest; i++)
+            {
+                var flagValue = (AdminFlags) (1u << i);
+                if ((flags & flagValue) != 0)
+                {
+                    array[ai++] = FlagsNameMap[i];
+                }
+            }
+
+            return array;
+        }
+    }
+}