1 //
2 // Binary.cs
3 //
4 // Author:
5 //   Atsushi Enomoto  <atsushi@ximian.com>
6 //
7 // Copyright (C) 2008 Novell, Inc.
8 //
9 
10 //
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
18 //
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
21 //
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 //
30 
31 using System;
32 using System.Linq;
33 
34 namespace System.Data.Linq
35 {
36     [SerializableAttribute]
37     [System.Runtime.Serialization.DataContract]
38     public sealed class Binary : IEquatable<Binary>
39     {
40         byte[] data;
41 
Binary(byte[] value)42         public Binary(byte[] value)
43         {
44             if (value == null)
45                 throw new ArgumentNullException("value");
46             data = (byte[]) value.Clone();
47         }
48 
operator ==(Binary binary1, Binary binary2)49         public static bool operator ==(Binary binary1, Binary binary2)
50         {
51             bool isNull= binary1 as object==null;
52             if (isNull)
53                 return binary2 as object == null;
54             else
55                 return binary1.Equals(binary2);
56         }
57 
operator !=(Binary binary1, Binary binary2)58         public static bool operator !=(Binary binary1, Binary binary2)
59         {
60             return !(binary1 == binary2);
61         }
62 
operator Binary(byte[] value)63         public static implicit operator Binary(byte[] value)
64         {
65             return new Binary(value);
66         }
67 
68         public int Length
69         {
70             get { return data.Length; }
71         }
72 
Equals(Binary other)73         public bool Equals(Binary other)
74         {
75             if (other == null)
76                 return false;
77 
78             if (this.Length != other.Length)
79                 return false;
80 
81             for (int i = 0; i < data.Length; i++)
82                 if (this.data[i] != other.data[i])
83                     return false;
84 
85             return true;
86         }
87 
Equals(object obj)88         public override bool Equals(object obj)
89         {
90             Binary other = obj as Binary;
91             return other != null && Equals(other);
92         }
93 
GetHashCode()94         public override int GetHashCode()
95         {
96             int hc = 0;
97             for (int i = 0; i < data.Length; ++i)
98                 hc ^= data[i];
99             return hc;
100         }
101 
ToArray()102         public byte[] ToArray()
103         {
104             if (data != null)
105                 return data.ToArray();
106             else
107                 return null;
108         }
109 
ToString()110         public override string ToString()
111         {
112             return '"' + Convert.ToBase64String(data) + '"';
113         }
114     }
115 }
116