Initial commit - WPinternals 2.6

DiscUtils/Registry/Cell.cs

@@ -0,0 +1,90 @@
+//
+// Copyright (c) 2008-2011, Kenneth Bell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+namespace DiscUtils.Registry
+{
+    /// <summary>
+    /// Base class for the different kinds of cell present in a hive.
+    /// </summary>
+    internal abstract class Cell : IByteArraySerializable
+    {
+        private int _index;
+
+        public Cell(int index)
+        {
+            _index = index;
+        }
+
+        public int Index
+        {
+            get { return _index; }
+            set { _index = value; }
+        }
+
+        public abstract int Size
+        {
+            get;
+        }
+
+        public abstract int ReadFrom(byte[] buffer, int offset);
+
+        public abstract void WriteTo(byte[] buffer, int offset);
+
+        internal static Cell Parse(RegistryHive hive, int index, byte[] buffer, int pos)
+        {
+            string type = Utilities.BytesToString(buffer, pos, 2);
+
+            Cell result = null;
+
+            switch (type)
+            {
+                case "nk":
+                    result = new KeyNodeCell(index);
+                    break;
+
+                case "sk":
+                    result = new SecurityCell(index);
+                    break;
+
+                case "vk":
+                    result = new ValueCell(index);
+                    break;
+
+                case "lh":
+                case "lf":
+                    result = new SubKeyHashedListCell(hive, index);
+                    break;
+
+                case "li":
+                case "ri":
+                    result = new SubKeyIndirectListCell(hive, index);
+                    break;
+
+                default:
+                    throw new RegistryCorruptException("Unknown cell type '" + type + "'");
+            }
+
+            result.ReadFrom(buffer, pos);
+            return result;
+        }
+    }
+}