mcs/class/corlib/System.Globalization/RegionInfo.cs

   1 //
   2 // System.Globalization.RegionInfo.cs
   3 //
   4 // Authors:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //   Marek Safar (marek.safar@gmail.com)
   7 //
   8 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   9 // Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)
  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 using System.Runtime.CompilerServices;
  31 using System.Runtime.InteropServices;
  32
  33 namespace System.Globalization
  34 {
  35         [System.Runtime.InteropServices.ComVisible(true)]
  36         [Serializable]
  37         [StructLayout (LayoutKind.Sequential)]
  38         public partial class RegionInfo
  39         {
  40                 static RegionInfo currentRegion;
  41
  42                 public static RegionInfo CurrentRegion {
  43                         get {
  44                                 if (currentRegion == null) {
  45                                         CultureInfo ci = CultureInfo.CurrentCulture;
  46                                         if (ci != null)
  47                                                 return currentRegion = new RegionInfo (ci);
  48
  49 #if MONOTOUCH
  50                                         currentRegion = CreateFromNSLocale ();
  51 #endif
  52                                 }
  53                                 return currentRegion;
  54                         }
  55                 }
  56
  57                 // the following (instance) fields must be _first_ and stay synchronized
  58                 // with the mono's MonoRegionInfo defined in mono/metadata/object-internals.h
  59 #pragma warning disable 649
  60                 int regionId;
  61                 string iso2Name;
  62                 string iso3Name;
  63                 string win3Name;
  64                 string englishName;
  65                 string nativeName;
  66                 string currencySymbol;
  67                 string isoCurrencySymbol;
  68                 string currencyEnglishName;
  69                 string currencyNativeName;
  70 #pragma warning restore 649
  71
  72                 public RegionInfo (int culture)
  73                 {
  74                         if (!GetByTerritory (CultureInfo.GetCultureInfo (culture)))
  75                                 throw new ArgumentException (
  76                                         String.Format ("Region ID {0} (0x{0:X4}) is not a supported region.", culture), "culture");
  77                 }
  78
  79                 public RegionInfo (string name)
  80                 {
  81                         if (name == null)
  82                                 throw new ArgumentNullException ();
  83
  84                         if (construct_internal_region_from_name (name.ToUpperInvariant ())) {
  85                                 return;
  86                         }
  87                         if (!GetByTerritory (CultureInfo.GetCultureInfo (name)))
  88                                 throw new ArgumentException (String.Format ("Region name {0} is not supported.", name), "name");
  89                 }
  90
  91                 RegionInfo (CultureInfo ci)
  92                 {
  93                         if (ci.LCID == CultureInfo.InvariantCultureId) {
  94                                 regionId = 244;
  95                                 iso2Name = "IV";
  96                                 iso3Name = "ivc";
  97                                 win3Name = "IVC";
  98                                 nativeName = englishName = "Invariant Country";
  99                                 currencySymbol = "\u00A4";
 100                                 isoCurrencySymbol ="XDR";
 101                                 currencyEnglishName = currencyNativeName = "International Monetary Fund";
 102                                 return;
 103                         }
 104
 105                         if (ci.Territory == null)
 106                                 throw new NotImplementedException ("Neutral region info");
 107
 108                         construct_internal_region_from_name (ci.Territory.ToUpperInvariant ());
 109                 }
 110
 111                 bool GetByTerritory (CultureInfo ci)
 112                 {
 113                         if (ci == null)
 114                                 throw new Exception ("INTERNAL ERROR: should not happen.");
 115                         if (ci.IsNeutralCulture || ci.Territory == null)
 116                                 return false;
 117
 118                         return construct_internal_region_from_name (ci.Territory.ToUpperInvariant ());
 119                 }
 120
 121                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 122                 private extern bool construct_internal_region_from_name (string name);
 123
 124                 [System.Runtime.InteropServices.ComVisible(false)]
 125                 public virtual string CurrencyEnglishName {
 126                         get { return currencyEnglishName; }
 127                 }
 128
 129                 public virtual string CurrencySymbol {
 130                         get { return currencySymbol; }
 131                 }
 132
 133                 [MonoTODO ("DisplayName currently only returns the EnglishName")]
 134                 public virtual string DisplayName {
 135                         get { return englishName; }
 136                 }
 137
 138                 public virtual string EnglishName {
 139                         get { return englishName; }
 140                 }
 141
 142                 [System.Runtime.InteropServices.ComVisible(false)]
 143                 public virtual int GeoId {
 144                         get { return regionId; }
 145                 }
 146
 147                 public virtual bool IsMetric {
 148                         get {
 149                                 switch (iso2Name) {
 150                                 case "US":
 151                                 case "UK":
 152                                         return false;
 153                                 default:
 154                                         return true;
 155                                 }
 156                         }
 157                 }
 158
 159                 public virtual string ISOCurrencySymbol {
 160                         get { return isoCurrencySymbol; }
 161                 }
 162
 163                 [ComVisible(false)]
 164                 public virtual string NativeName {
 165                         get { return nativeName; }
 166                 }
 167
 168                 [ComVisible(false)]
 169                 public virtual string CurrencyNativeName {
 170                         get { return currencyNativeName; }
 171                 }
 172
 173                 public virtual string Name {
 174                         get { return iso2Name; }
 175                 }
 176
 177                 public virtual string ThreeLetterISORegionName {
 178                         get { return iso3Name; }
 179                 }
 180
 181                 public virtual string ThreeLetterWindowsRegionName {
 182                         get { return win3Name; }
 183                 }
 184
 185                 public virtual string TwoLetterISORegionName {
 186                         get { return iso2Name; }
 187                 }
 188
 189                 public override bool Equals (object value)
 190                 {
 191                         RegionInfo other = value as RegionInfo;
 192                         return other != null && Name == other.Name;
 193                 }
 194
 195                 public override int GetHashCode ()
 196                 {
 197                         return Name.GetHashCode ();
 198                 }
 199
 200                 public override string ToString ()
 201                 {
 202                         return Name;
 203                 }
 204         }
 205 }