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

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