Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Util / altserialization.cs / 1 / altserialization.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * AltSerialization.cs * * Copyright (c) 1998-2000, Microsoft Corporation * */ namespace System.Web.Util { using System.Runtime.Serialization.Formatters; using System.Runtime.Serialization.Formatters.Binary; using System.Runtime.Serialization; using System.IO; internal static class AltSerialization { enum TypeID : byte { String = 1, Int32, Boolean, DateTime, Decimal, Byte, Char, Single, Double, SByte, Int16, Int64, UInt16, UInt32, UInt64, TimeSpan, Guid, IntPtr, UIntPtr, Object, Null, } internal static void WriteValueToStream(Object value, BinaryWriter writer) { if (value == null) { writer.Write((byte)TypeID.Null); } else if (value is String) { writer.Write((byte)TypeID.String); writer.Write((String) value); } else if (value is Int32) { writer.Write((byte)TypeID.Int32); writer.Write((Int32) value); } else if (value is Boolean) { writer.Write((byte)TypeID.Boolean); writer.Write((Boolean) value); } else if (value is DateTime) { writer.Write((byte)TypeID.DateTime); writer.Write(((DateTime) value).Ticks); } else if (value is Decimal) { writer.Write((byte)TypeID.Decimal); int[] bits = Decimal.GetBits((Decimal)value); for (int i = 0; i < 4; i++) { writer.Write((int)bits[i]); } } else if (value is Byte) { writer.Write((byte)TypeID.Byte); writer.Write((byte) value); } else if (value is Char) { writer.Write((byte)TypeID.Char); writer.Write((char) value); } else if (value is Single) { writer.Write((byte)TypeID.Single); writer.Write((float) value); } else if (value is Double) { writer.Write((byte)TypeID.Double); writer.Write((double) value); } else if (value is SByte) { writer.Write((byte)TypeID.SByte); writer.Write((SByte) value); } else if (value is Int16) { writer.Write((byte)TypeID.Int16); writer.Write((short) value); } else if (value is Int64) { writer.Write((byte)TypeID.Int64); writer.Write((long) value); } else if (value is UInt16) { writer.Write((byte)TypeID.UInt16); writer.Write((UInt16) value); } else if (value is UInt32) { writer.Write((byte)TypeID.UInt32); writer.Write((UInt32) value); } else if (value is UInt64) { writer.Write((byte)TypeID.UInt64); writer.Write((UInt64) value); } else if (value is TimeSpan) { writer.Write((byte)TypeID.TimeSpan); writer.Write(((TimeSpan) value).Ticks); } else if (value is Guid) { writer.Write((byte)TypeID.Guid); Guid guid = (Guid) value; byte[] bits = guid.ToByteArray(); writer.Write(bits); } else if (value is IntPtr) { writer.Write((byte)TypeID.IntPtr); IntPtr v = (IntPtr) value; if (IntPtr.Size == 4) { writer.Write((Int32)v.ToInt32()); } else { Debug.Assert(IntPtr.Size == 8); writer.Write((Int64)v.ToInt64()); } } else if (value is UIntPtr) { writer.Write((byte)TypeID.UIntPtr); UIntPtr v = (UIntPtr) value; if (UIntPtr.Size == 4) { writer.Write((UInt32)v.ToUInt32()); } else { Debug.Assert(UIntPtr.Size == 8); writer.Write((UInt64)v.ToUInt64()); } } else { writer.Write((byte)TypeID.Object); BinaryFormatter formatter = new BinaryFormatter(); try { formatter.Serialize(writer.BaseStream, value); } catch (Exception innerException) { HttpException outerException = new HttpException(SR.GetString(SR.Cant_serialize_session_state), innerException); outerException.SetFormatter(new UseLastUnhandledErrorFormatter(outerException)); throw outerException; } } } internal static Object ReadValueFromStream(BinaryReader reader) { TypeID id; Object value = null; id = (TypeID) reader.ReadByte(); switch (id) { case TypeID.String: value = reader.ReadString(); break; case TypeID.Int32: value = reader.ReadInt32(); break; case TypeID.Boolean: value = reader.ReadBoolean(); break; case TypeID.DateTime: value = new DateTime(reader.ReadInt64()); break; case TypeID.Decimal: { int[] bits = new int[4]; for (int i = 0; i < 4; i++) { bits[i] = reader.ReadInt32(); } value = new Decimal(bits); } break; case TypeID.Byte: value = reader.ReadByte(); break; case TypeID.Char: value = reader.ReadChar(); break; case TypeID.Single: value = reader.ReadSingle(); break; case TypeID.Double: value = reader.ReadDouble(); break; case TypeID.SByte: value = reader.ReadSByte(); break; case TypeID.Int16: value = reader.ReadInt16(); break; case TypeID.Int64: value = reader.ReadInt64(); break; case TypeID.UInt16: value = reader.ReadUInt16(); break; case TypeID.UInt32: value = reader.ReadUInt32(); break; case TypeID.UInt64: value = reader.ReadUInt64(); break; case TypeID.TimeSpan: value = new TimeSpan(reader.ReadInt64()); break; case TypeID.Guid: { byte[] bits = reader.ReadBytes(16); value = new Guid(bits); } break; case TypeID.IntPtr: if (IntPtr.Size == 4) { value = new IntPtr(reader.ReadInt32()); } else { Debug.Assert(IntPtr.Size == 8); value = new IntPtr(reader.ReadInt64()); } break; case TypeID.UIntPtr: if (UIntPtr.Size == 4) { value = new UIntPtr(reader.ReadUInt32()); } else { Debug.Assert(UIntPtr.Size == 8); value = new UIntPtr(reader.ReadUInt64()); } break; case TypeID.Object: BinaryFormatter formatter = new BinaryFormatter(); value = formatter.Deserialize(reader.BaseStream); break; case TypeID.Null: value = null; break; } return value; } } }
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