chore: initialize standalone UPM package

2026-08-26 02:48:49 +08:00
commit ee385a4107
32 changed files with 897 additions and 0 deletions
@@ -0,0 +1,53 @@
+#nullable enable
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace ShrinkApp
+{
+    [AttributeUsage(AttributeTargets.Assembly, AllowMultiple = true)]
+    public sealed class ShrinkAppInstallerRegistryAttribute : Attribute
+    {
+        public ShrinkAppInstallerRegistryAttribute(params Type[] installerTypes)
+        {
+            InstallerTypes = installerTypes ?? Array.Empty<Type>();
+        }
+
+        public Type[] InstallerTypes { get; }
+    }
+
+    internal static class ShrinkAppGeneratedRegistry
+    {
+        public static IReadOnlyList<Type> GetInstallerTypes()
+        {
+            var types = new List<Type>();
+            var seen = new HashSet<Type>();
+            foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
+            {
+                object[] attributes;
+                try
+                {
+                    attributes = assembly.GetCustomAttributes(typeof(ShrinkAppInstallerRegistryAttribute), false);
+                }
+                catch
+                {
+                    continue;
+                }
+
+                foreach (var attribute in attributes.OfType<ShrinkAppInstallerRegistryAttribute>())
+                {
+                    foreach (var installerType in attribute.InstallerTypes ?? Array.Empty<Type>())
+                    {
+                        if (installerType == null || !seen.Add(installerType))
+                            continue;
+
+                        types.Add(installerType);
+                    }
+                }
+            }
+
+            return types;
+        }
+    }
+}