[AaruFormat] Implement Identify.

Aaru.Images/AaruFormat/Identify.cs

@@ -0,0 +1,27 @@
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using Aaru.CommonTypes.Interfaces;
+
+namespace Aaru.Images;
+
+public sealed partial class AaruFormat
+{
+#region IWritableOpticalImage Members
+
+    /// <inheritdoc />
+    public bool Identify(IFilter imageFilter)
+    {
+        string imagePath = imageFilter.BasePath;
+
+        int ret = aaruf_identify(imagePath);
+
+        return ret >= 100;
+    }
+
+#endregion
+
+    // AARU_EXPORT int AARU_CALL aaruf_identify(const char *filename)
+    [LibraryImport("libaaruformat", EntryPoint = "aaruf_identify", StringMarshalling = StringMarshalling.Utf8)]
+    [UnmanagedCallConv(CallConvs = [typeof(CallConvStdcall)])]
+    private static partial int aaruf_identify(string filename);
+}

Aaru.Images/AaruFormat/Unimplemented.cs

@@ -22,9 +22,6 @@ public sealed partial class AaruFormat
 
 #region IWritableOpticalImage Members
 
-    /// <inheritdoc />
-    public bool Identify(IFilter imageFilter) => throw new NotImplementedException();
-
     /// <inheritdoc />
     public ErrorNumber Open(IFilter imageFilter) => throw new NotImplementedException();