mcs/class/System/System.Runtime.Versioning/FrameworkName.cs

   1 //
   2 // System.Runtime.Versioning.FrameworkName class
   3 //
   4 // Authors
   5 //      Marek Habersack <mhabersack@novell.com>
   6 //
   7 // Copyright (C) 2009 Novell, Inc (http://novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Text;
  30
  31 #if NET_4_0
  32 namespace System.Runtime.Versioning
  33 {
  34         [Serializable]
  35         public sealed class FrameworkName : IEquatable <FrameworkName>
  36         {
  37                 string fullName;
  38                 int? hashCode;
  39
  40                 public string FullName {
  41                         get {
  42                                 if (fullName == null) {
  43                                         var sb = new StringBuilder (Identifier);
  44                                         sb.Append (",Version=v");
  45                                         sb.Append (Version.ToString ());
  46
  47                                         string profile = Profile;
  48                                         if (!String.IsNullOrEmpty (profile)) {
  49                                                 sb.Append (",Profile=");
  50                                                 sb.Append (profile);
  51                                         }
  52
  53                                         fullName = sb.ToString ();
  54                                 }
  55
  56                                 return fullName;
  57                         }
  58                 }
  59
  60                 public string Identifier {
  61                         get; private set;
  62                 }
  63
  64                 public string Profile {
  65                         get; private set;
  66                 }
  67
  68                 public Version Version {
  69                         get; private set;
  70                 }
  71
  72                 public FrameworkName (string frameworkName)
  73                 {
  74                         if (frameworkName == null)
  75                                 throw new ArgumentNullException ("frameworkName");
  76
  77                         if (frameworkName.Length == 0)
  78                                 throw new ArgumentException ("The parameter 'frameworkName' cannot be an empty string.", "frameworkName");
  79
  80                         this.Profile = String.Empty;
  81                         ParseFrameworkName (frameworkName);
  82                 }
  83
  84                 public FrameworkName (string identifier, Version version)
  85                         : this (identifier, version, String.Empty)
  86                 {
  87                 }
  88
  89                 public FrameworkName (string identifier, Version version, string profile)
  90                 {
  91                         if (identifier == null)
  92                                 throw new ArgumentNullException ("identifier");
  93
  94                         if (version == null)
  95                                 throw new ArgumentNullException ("version");
  96
  97                         if (identifier.Length == 0)
  98                                 throw new ArgumentException ("The parameter 'identifier' cannot be an empty string.", "identifier");
  99
 100                         this.Identifier = identifier;
 101                         this.Version = version;
 102                         if (profile == null)
 103                                 this.Profile = String.Empty;
 104                         else
 105                                 this.Profile = profile;
 106                 }
 107
 108                 public bool Equals (FrameworkName other)
 109                 {
 110                         if (Object.ReferenceEquals (other, null))
 111                                 return false;
 112
 113                         return (other.Version == this.Version &&
 114                                 String.Compare (other.Identifier, this.Identifier, StringComparison.Ordinal) == 0 &&
 115                                 String.Compare (other.Profile, this.Profile, StringComparison.Ordinal) == 0);
 116                 }
 117
 118                 public override bool Equals (object obj)
 119                 {
 120                         return Equals (obj as FrameworkName);
 121                 }
 122
 123                 public override int GetHashCode ()
 124                 {
 125                         if (hashCode == null) {
 126                                 hashCode = Version.GetHashCode () ^ Identifier.GetHashCode ();
 127                                 string profile = Profile;
 128                                 if (profile != null)
 129                                         hashCode ^= profile.GetHashCode ();
 130                         }
 131
 132                         return (int)hashCode;
 133                 }
 134
 135                 public override string ToString ()
 136                 {
 137                         return FullName;
 138                 }
 139
 140                 public static bool operator == (FrameworkName left, FrameworkName right)
 141                 {
 142                         if (((object)left) == null && ((object)right) == null)
 143                                 return true;
 144
 145                         if (((object)left) == null || ((object)right) == null)
 146                                 return false;
 147
 148                         return left.Equals (right);
 149                 }
 150
 151                 public static bool operator != (FrameworkName left, FrameworkName right)
 152                 {
 153                         if (((object)left) == null && ((object)right) == null)
 154                                 return false;
 155
 156                         if (((object)left) == null || ((object)right) == null)
 157                                 return true;
 158
 159                         return !left.Equals (right);
 160                 }
 161
 162                 void ParseFrameworkName (string frameworkName)
 163                 {
 164                         string[] parts = frameworkName.Split (',');
 165                         int len = parts.Length;
 166
 167                         if (len < 2 || len > 3)
 168                                 throw new ArgumentException ("FrameworkName cannot have less than two components or more than three components.");
 169
 170                         bool invalid = false;
 171                         string part;
 172                         string[] splitPart;
 173                         int splen;
 174
 175                         for (int i = 0; i < len; i++) {
 176                                 part = parts [i].Trim ();
 177                                 if (part.Length == 0) {
 178                                         invalid = true;
 179                                         break;
 180                                 }
 181
 182                                 splitPart = part.Split ('=');
 183                                 splen = splitPart.Length;
 184
 185                                 if (String.Compare ("version", splitPart [0], StringComparison.OrdinalIgnoreCase) == 0) {
 186                                         if (i == 0 || splen != 2) {
 187                                                 invalid = true;
 188                                                 break;
 189                                         }
 190
 191                                         try {
 192                                                 char first = splitPart [1][0];
 193                                                 if (first == 'v' || first == 'V')
 194                                                         splitPart [1] = splitPart [1].Substring (1);
 195                                                 this.Version = new Version (splitPart [1]);
 196                                         } catch (Exception ex) {
 197                                                 throw new ArgumentException ("FrameworkName version component is invalid.", ex);
 198                                         }
 199
 200                                         continue;
 201                                 }
 202
 203                                 if (String.Compare ("profile", splitPart [0], StringComparison.OrdinalIgnoreCase) == 0) {
 204                                         if (i == 0) {
 205                                                 invalid = true;
 206                                                 break;
 207                                         }
 208
 209                                         if (splen > 1)
 210                                                 Profile = String.Join ("=", splitPart, 1, splen - 1);
 211
 212                                         continue;
 213                                 }
 214
 215                                 if (i == 0) {
 216                                         Identifier = part;
 217                                         continue;
 218                                 }
 219
 220                                 invalid = true;
 221                                 break;
 222                         }
 223
 224                         if (invalid)
 225                                 throw new ArgumentException ("FrameworkName is invalid.");
 226
 227                         if (Version == null)
 228                                 throw new ArgumentException ("FrameworkName version component is missing.");
 229
 230                 }
 231         }
 232 }
 233 #endif