From fccf9f06a9f1f8e8f2f28ab9fc3dde468f133b61 Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@tasvideos.org>
Date: Sun, 8 Mar 2015 03:10:20 +0000
Subject: [PATCH] Apple II - wire up savestates (binary only, for now)

---
 .../Computers/AppleII/AppleII.cs              | 54 ++++++++++++++++++-
 .../Computers/AppleII/Virtu/Machine.cs        | 29 ++++++++++
 2 files changed, 81 insertions(+), 2 deletions(-)

diff --git a/BizHawk.Emulation.Cores/Computers/AppleII/AppleII.cs b/BizHawk.Emulation.Cores/Computers/AppleII/AppleII.cs
index 57064ff8dc..b4fee4c92f 100644
--- a/BizHawk.Emulation.Cores/Computers/AppleII/AppleII.cs
+++ b/BizHawk.Emulation.Cores/Computers/AppleII/AppleII.cs
@@ -10,7 +10,7 @@ namespace BizHawk.Emulation.Cores.Computers.AppleII
 		isPorted: true,
 		isReleased: false
 		)]
-	public partial class AppleII : IEmulator
+	public partial class AppleII : IEmulator, IStatable
 	{
 		[CoreConstructor("AppleII")]
 		public AppleII(CoreComm comm, GameInfo game, byte[] rom, object Settings)
@@ -250,6 +250,56 @@ namespace BizHawk.Emulation.Cores.Computers.AppleII
 		}
 
 		#endregion
-		
+
+		#region IStatable
+
+		public bool BinarySaveStatesPreferred { get { return false; } }
+
+		[FeatureNotImplemented]
+		public void SaveStateText(TextWriter writer)
+		{
+
+		}
+
+		[FeatureNotImplemented]
+		public void LoadStateText(TextReader reader)
+		{
+
+		}
+
+		public void SaveStateBinary(BinaryWriter writer)
+		{
+			_machine.SaveState(writer);
+		}
+
+		public void LoadStateBinary(BinaryReader reader)
+		{
+			_machine.LoadState(reader);
+		}
+
+		public byte[] SaveStateBinary()
+		{
+			if (_stateBuffer == null)
+			{
+				var stream = new MemoryStream();
+				var writer = new BinaryWriter(stream);
+				SaveStateBinary(writer);
+				_stateBuffer = stream.ToArray();
+				writer.Close();
+				return _stateBuffer;
+			}
+			else
+			{
+				var stream = new MemoryStream(_stateBuffer);
+				var writer = new BinaryWriter(stream);
+				SaveStateBinary(writer);
+				writer.Close();
+				return _stateBuffer;
+			}
+		}
+
+		private byte[] _stateBuffer;
+
+		#endregion
 	}
 }
diff --git a/BizHawk.Emulation.Cores/Computers/AppleII/Virtu/Machine.cs b/BizHawk.Emulation.Cores/Computers/AppleII/Virtu/Machine.cs
index 88790ec3d5..99f9d59207 100644
--- a/BizHawk.Emulation.Cores/Computers/AppleII/Virtu/Machine.cs
+++ b/BizHawk.Emulation.Cores/Computers/AppleII/Virtu/Machine.cs
@@ -204,6 +204,23 @@ namespace Jellyfish.Virtu
             }
         }
 
+		// TODO: don't copy paste
+		public void LoadState(BinaryReader reader)
+		{
+			string signature = reader.ReadString();
+			var version = new Version(reader.ReadString());
+			if ((signature != StateSignature) || (version != new Version(Machine.Version))) // avoid state version mismatch (for now)
+			{
+				throw new InvalidOperationException();
+			}
+			foreach (var component in Components)
+			{
+				_debugService.WriteMessage("Loading machine '{0}'", component.GetType().Name);
+				component.LoadState(reader, version);
+				//_debugService.WriteMessage("Loaded machine '{0}'", component.GetType().Name);
+			}
+		}
+
         private void LoadState(Stream stream)
         {
             using (var reader = new BinaryReader(stream))
@@ -228,6 +245,18 @@ namespace Jellyfish.Virtu
             _storageService.Save(Machine.StateFileName, stream => SaveState(stream));
         }
 
+		public void SaveState(BinaryWriter writer)
+		{
+			writer.Write(StateSignature);
+			writer.Write(Machine.Version);
+			foreach (var component in Components)
+			{
+				_debugService.WriteMessage("Saving machine '{0}'", component.GetType().Name);
+				component.SaveState(writer);
+				//_debugService.WriteMessage("Saved machine '{0}'", component.GetType().Name);
+			}
+		}
+
         private void SaveState(Stream stream)
         {
             using (var writer = new BinaryWriter(stream))