Added support for .NET embedded resources

2026-07-27 13:13:29 -07:00 · 2022-07-05 15:15:26 -05:00
parent c09f29e92c
commit e5ae6cd7cb
2 changed files with 120 additions and 0 deletions
@@ -0,0 +1,58 @@
+using Microsoft.Iris.Data;
+using System;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+namespace Microsoft.Iris.OS
+{
+    internal class ClrDllResource : Resource
+    {
+        private Assembly _assembly;
+        private string _identifier;
+        private GCHandle _handle;
+        private IntPtr _buffer;
+        private uint _length;
+
+        internal ClrDllResource(string uri, Assembly assembly, string identifier)
+          : base(uri, true)
+        {
+            _assembly = assembly;
+            _identifier = identifier;
+        }
+
+        public override string Identifier => _identifier;
+
+        protected override void StartAcquisition(bool forceSynchronous)
+        {
+            string errorDetails = null;
+            if (_buffer == IntPtr.Zero)
+            {
+                try
+                {
+                    var resName = _assembly.GetManifestResourceNames()
+                        .First(s => s.EndsWith("." + _identifier, StringComparison.OrdinalIgnoreCase));
+
+                    using System.IO.Stream fs = _assembly.GetManifestResourceStream(resName);
+                    var data = new byte[fs.Length];
+                    fs.Read(data, 0, (int)fs.Length);
+
+                    _handle = GCHandle.Alloc(data, GCHandleType.Pinned);
+                    _buffer = _handle.AddrOfPinnedObject();
+                    _length = (uint)data.LongLength;
+                }
+                catch
+                {
+                    errorDetails = $"Resource not found: {ClrDllResources.Scheme}://{_assembly.Location}!{_identifier}";
+                }
+            }
+            NotifyAcquisitionComplete(_buffer, _length, false, errorDetails);
+        }
+
+        protected override void CancelAcquisition()
+        {
+        }
+
+        public override string ToString() => _assembly.GetName().Name + "|" + _identifier.ToLowerInvariant();
+    }
+}