mcs/class/FirebirdSql.Data.Firebird/FirebirdSql.Data.Common/ParameterBuffer.cs

   1 /*\r
   2  *      Firebird ADO.NET Data provider for .NET and     Mono \r
   3  * \r
   4  *         The contents of this file are subject to the Initial \r
   5  *         Developer's Public License Version 1.0 (the "License"); \r
   6  *         you may not use this file except in compliance with the \r
   7  *         License. You may obtain a copy of the License at \r
   8  *         http://www.firebirdsql.org/index.php?op=doc&id=idpl\r
   9  *\r
  10  *         Software distributed under the License is distributed on \r
  11  *         an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either \r
  12  *         express or implied. See the License for the specific \r
  13  *         language governing rights and limitations under the License.\r
  14  * \r
  15  *      Copyright (c) 2002, 2005 Carlos Guzman Alvarez\r
  16  *      All Rights Reserved.\r
  17  */\r
  18 \r
  19 using System;\r
  20 using System.IO;\r
  21 using System.Text;\r
  22 using System.Net;\r
  23 \r
  24 namespace FirebirdSql.Data.Common\r
  25 {\r
  26         internal abstract class ParameterBuffer\r
  27         {\r
  28                 #region Fields\r
  29 \r
  30                 private MemoryStream stream;\r
  31                 private bool isLittleEndian;\r
  32 \r
  33                 #endregion\r
  34 \r
  35                 #region Properties\r
  36 \r
  37                 public short Length\r
  38                 {\r
  39                         get { return (short)this.ToArray().Length; }\r
  40                 }\r
  41 \r
  42                 #endregion\r
  43 \r
  44                 #region Protected properties\r
  45 \r
  46                 protected bool IsLittleEndian\r
  47                 {\r
  48                         get { return this.isLittleEndian; }\r
  49                 }\r
  50 \r
  51                 #endregion\r
  52 \r
  53                 #region Constructors\r
  54 \r
  55                 protected ParameterBuffer() : this(false)\r
  56                 {\r
  57                 }\r
  58 \r
  59                 protected ParameterBuffer(bool isLittleEndian)\r
  60                 {\r
  61                         this.stream = new MemoryStream();\r
  62                         this.isLittleEndian = isLittleEndian;\r
  63                 }\r
  64 \r
  65                 #endregion\r
  66 \r
  67                 #region Protected Methods\r
  68 \r
  69                 protected void WriteByte(int value)\r
  70                 {\r
  71                         this.WriteByte((byte)value);\r
  72                 }\r
  73 \r
  74                 protected void WriteByte(byte value)\r
  75                 {\r
  76                         this.stream.WriteByte(value);\r
  77                 }\r
  78 \r
  79                 protected void Write(short value)\r
  80                 {\r
  81                         if (!this.IsLittleEndian)\r
  82                         {\r
  83                                 value = (short)IPAddress.NetworkToHostOrder(value);\r
  84                         }\r
  85 \r
  86                         byte[] buffer = BitConverter.GetBytes(value);\r
  87 \r
  88                         this.stream.Write(buffer, 0, buffer.Length);\r
  89                 }\r
  90 \r
  91                 protected void Write(int value)\r
  92                 {\r
  93                         if (!this.IsLittleEndian)\r
  94                         {\r
  95                                 value = (int)IPAddress.NetworkToHostOrder(value);\r
  96                         }\r
  97 \r
  98                         byte[] buffer = BitConverter.GetBytes(value);\r
  99 \r
 100                         this.stream.Write(buffer, 0, buffer.Length);\r
 101                 }\r
 102 \r
 103                 protected void Write(byte[] buffer)\r
 104                 {\r
 105                         this.Write(buffer, 0, buffer.Length);\r
 106                 }\r
 107 \r
 108                 protected void Write(byte[] buffer, int offset, int count)\r
 109                 {\r
 110                         this.stream.Write(buffer, offset, count);\r
 111                 }\r
 112 \r
 113                 #endregion\r
 114 \r
 115                 #region Methods\r
 116 \r
 117                 public virtual void Append(int type)\r
 118                 {\r
 119                         this.WriteByte(type);\r
 120                 }\r
 121 \r
 122                 public byte[] ToArray()\r
 123                 {\r
 124                         return stream.ToArray();\r
 125                 }\r
 126 \r
 127                 #endregion\r
 128         }\r
 129 }\r