mcs/class/System/System.Net.Mail/MailAddress.cs

   1 //
   2 // System.Net.Mail.MailAddress.cs
   3 //
   4 // Author:
   5 //      Tim Coleman (tim@timcoleman.com)
   6 //
   7 // Copyright (C) Tim Coleman, 2004
   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.Text;
  32
  33 namespace System.Net.Mail {
  34         public class MailAddress
  35         {
  36                 #region Fields
  37
  38                 string address;
  39                 string displayName;
  40                 string host;
  41                 string user;
  42                 string to_string;
  43                 //Encoding displayNameEncoding;
  44
  45                 #endregion // Fields
  46
  47                 #region Constructors
  48
  49                 public MailAddress (string address) : this (address, null)
  50                 {
  51                 }
  52
  53                 public MailAddress (string address, string displayName) : this (address, displayName, Encoding.UTF8)
  54                 {
  55                 }
  56
  57                 [MonoTODO ("We don't do anything with displayNameEncoding")]
  58                 public MailAddress (string address, string displayName, Encoding displayNameEncoding)
  59                 {
  60                         if (address == null)
  61                                 throw new ArgumentNullException ("address");
  62                         if (address.Length == 0)
  63                                 throw new ArgumentException ("address");
  64
  65                         if (displayName != null)
  66                                 this.displayName = displayName.Trim ();
  67                         ParseAddress (address);
  68                 }
  69
  70                 void ParseAddress (string address)
  71                 {
  72                         // 1. Quotes for display name
  73                         address = address.Trim ();
  74                         int idx = address.IndexOf ('"');
  75                         if (idx != -1) {
  76                                 if (idx != 0 || address.Length == 1)
  77                                         throw CreateFormatException ();
  78
  79                                 int closing = address.LastIndexOf ('"');
  80                                 if (closing == idx)
  81                                         throw CreateFormatException ();
  82
  83                                 if (this.displayName == null)
  84                                         this.displayName = address.Substring (idx + 1, closing - idx - 1).Trim ();
  85                                 address = address.Substring (closing + 1).Trim ();
  86                         }
  87
  88                         // 2. <email>
  89                         idx = address.IndexOf ('<');
  90                         if (idx >= 0) {
  91                                 if (this.displayName == null)
  92                                         this.displayName = address.Substring (0, idx).Trim ();
  93                                 if (address.Length - 1 == idx)
  94                                         throw CreateFormatException ();
  95
  96                                 int end = address.IndexOf ('>', idx + 1);
  97                                 if (end == -1)
  98                                         throw CreateFormatException ();
  99
 100                                 address = address.Substring (idx + 1, end - idx - 1).Trim ();
 101                         }
 102                         this.address = address;
 103                         // 3. email
 104                         idx = address.IndexOf ('@');
 105                         if (idx <= 0)
 106                                 throw CreateFormatException ();
 107                         if (idx != address.LastIndexOf ('@'))
 108                                 throw CreateFormatException ();
 109
 110                         this.user = address.Substring (0, idx).Trim ();
 111                         if (user.Length == 0)
 112                                 throw CreateFormatException ();
 113                         this.host = address.Substring (idx + 1).Trim ();
 114                         if (host.Length == 0)
 115                                 throw CreateFormatException ();
 116                 }
 117
 118                 #endregion // Constructors
 119
 120 #region Properties
 121
 122                 public string Address {
 123                         get { return address; }
 124                 }
 125
 126                 public string DisplayName {
 127                         get {
 128                                 if (displayName == null)
 129                                         return string.Empty;
 130                                 return displayName;
 131                         }
 132                 }
 133
 134                 public string Host {
 135                         get { return host; }
 136                 }
 137
 138                 public string User {
 139                         get { return user; }
 140                 }
 141
 142 #endregion // Properties
 143
 144 #region Methods
 145
 146                 public override bool Equals (object obj)
 147                 {
 148                         if (obj == null)
 149                                 return false;
 150
 151                         return (0 == String.Compare (ToString (), obj.ToString (), StringComparison.OrdinalIgnoreCase));
 152                 }
 153
 154                 public override int GetHashCode ()
 155                 {
 156                         return ToString ().GetHashCode ();
 157                 }
 158
 159                 public override string ToString ()
 160                 {
 161                         if (to_string != null)
 162                                 return to_string;
 163
 164                         if (!String.IsNullOrEmpty (displayName))
 165                                 to_string = String.Format ("\"{0}\" <{1}>", DisplayName, Address);
 166                         else
 167                                 to_string = address;
 168
 169                         return to_string;
 170                 }
 171
 172                 private static FormatException CreateFormatException () {
 173                         return new FormatException ("The specified string is not in the "
 174                                 + "form required for an e-mail address.");
 175                 }
 176
 177 #endregion // Methods
 178         }
 179 }
 180