1 files changed, 71 insertions, 0 deletions
diff --git a/ARMeilleure/Memory/MemoryHelper.cs b/ARMeilleure/Memory/MemoryHelper.cs
new file mode 100644
index 00000000..71ddac23
--- /dev/null
+++ b/ARMeilleure/Memory/MemoryHelper.cs
@@ -0,0 +1,71 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace ARMeilleure.Memory
+{
+    public static class MemoryHelper
+    {
+        public static void FillWithZeros(IMemoryManager memory, long position, int size)
+        {
+            int size8 = size & ~(8 - 1);
+
+            for (int offs = 0; offs < size8; offs += 8)
+            {
+                memory.WriteInt64(position + offs, 0);
+            }
+
+            for (int offs = size8; offs < (size - size8); offs++)
+            {
+                memory.WriteByte(position + offs, 0);
+            }
+        }
+
+        public unsafe static T Read<T>(IMemoryManager memory, long position) where T : struct
+        {
+            long size = Marshal.SizeOf<T>();
+
+            byte[] data = memory.ReadBytes(position, size);
+
+            fixed (byte* ptr = data)
+            {
+                return Marshal.PtrToStructure<T>((IntPtr)ptr);
+            }
+        }
+
+        public unsafe static void Write<T>(IMemoryManager memory, long position, T value) where T : struct
+        {
+            long size = Marshal.SizeOf<T>();
+
+            byte[] data = new byte[size];
+
+            fixed (byte* ptr = data)
+            {
+                Marshal.StructureToPtr<T>(value, (IntPtr)ptr, false);
+            }
+
+            memory.WriteBytes(position, data);
+        }
+
+        public static string ReadAsciiString(IMemoryManager memory, long position, long maxSize = -1)
+        {
+            using (MemoryStream ms = new MemoryStream())
+            {
+                for (long offs = 0; offs < maxSize || maxSize == -1; offs++)
+                {
+                    byte value = (byte)memory.ReadByte(position + offs);
+
+                    if (value == 0)
+                    {
+                        break;
+                    }
+
+                    ms.WriteByte(value);
+                }
+
+                return Encoding.ASCII.GetString(ms.ToArray());
+            }
+        }
+    }
+}
+\ No newline at end of file