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 using System.Threading;
  33
  34 namespace System.Globalization
  35 {
  36         [System.Runtime.InteropServices.ComVisible(true)]
  37         [Serializable]
  38         [StructLayout (LayoutKind.Sequential)]
  39         public partial class RegionInfo
  40         {
  41                 static RegionInfo currentRegion;
  42
  43                 public static RegionInfo CurrentRegion {
  44                         get {
  45                                 var region = currentRegion;
  46                                 if (region == null) {
  47                                         CultureInfo ci = CultureInfo.CurrentCulture;
  48                                         if (ci != null) {
  49                                                 region = new RegionInfo (ci);
  50                                         } else {
  51 #if MONOTOUCH
  52                                                 region = CreateFromNSLocale ();
  53 #endif
  54                                         }
  55
  56                                         if (Interlocked.CompareExchange (ref currentRegion, region, null) != null)
  57                                                 region = currentRegion;
  58                                 }
  59
  60                                 return region;
  61                         }
  62                 }
  63
  64                 // the following (instance) fields must be _first_ and stay synchronized
  65                 // with the mono's MonoRegionInfo defined in mono/metadata/object-internals.h
  66 #pragma warning disable 649
  67                 int regionId;
  68                 string iso2Name;
  69                 string iso3Name;
  70                 string win3Name;
  71                 string englishName;
  72                 string nativeName;
  73                 string currencySymbol;
  74                 string isoCurrencySymbol;
  75                 string currencyEnglishName;
  76                 string currencyNativeName;
  77 #pragma warning restore 649
  78
  79                 public RegionInfo (int culture)
  80                 {
  81                         if (!GetByTerritory (CultureInfo.GetCultureInfo (culture)))
  82                                 throw new ArgumentException (
  83                                         String.Format ("Region ID {0} (0x{0:X4}) is not a supported region.", culture), "culture");
  84                 }
  85
  86                 public RegionInfo (string name)
  87                 {
  88                         if (name == null)
  89                                 throw new ArgumentNullException ();
  90
  91                         if (construct_internal_region_from_name (name.ToUpperInvariant ())) {
  92                                 return;
  93                         }
  94                         if (!GetByTerritory (CultureInfo.GetCultureInfo (name)))
  95                                 throw new ArgumentException (String.Format ("Region name {0} is not supported.", name), "name");
  96                 }
  97
  98                 RegionInfo (CultureInfo ci)
  99                 {
 100                         if (ci.LCID == CultureInfo.InvariantCultureId) {
 101                                 regionId = 244;
 102                                 iso2Name = "IV";
 103                                 iso3Name = "ivc";
 104                                 win3Name = "IVC";
 105                                 nativeName = englishName = "Invariant Country";
 106                                 currencySymbol = "\u00A4";
 107                                 isoCurrencySymbol ="XDR";
 108                                 currencyEnglishName = currencyNativeName = "International Monetary Fund";
 109                                 return;
 110                         }
 111
 112                         if (ci.Territory == null)
 113                                 throw new NotImplementedException ("Neutral region info");
 114
 115                         construct_internal_region_from_name (ci.Territory.ToUpperInvariant ());
 116                 }
 117
 118                 bool GetByTerritory (CultureInfo ci)
 119                 {
 120                         if (ci == null)
 121                                 throw new Exception ("INTERNAL ERROR: should not happen.");
 122                         if (ci.IsNeutralCulture || ci.Territory == null)
 123                                 return false;
 124
 125                         return construct_internal_region_from_name (ci.Territory.ToUpperInvariant ());
 126                 }
 127
 128                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 129                 private extern bool construct_internal_region_from_name (string name);
 130
 131                 [System.Runtime.InteropServices.ComVisible(false)]
 132                 public virtual string CurrencyEnglishName {
 133                         get { return currencyEnglishName; }
 134                 }
 135
 136                 public virtual string CurrencySymbol {
 137                         get { return currencySymbol; }
 138                 }
 139
 140                 [MonoTODO ("DisplayName currently only returns the EnglishName")]
 141                 public virtual string DisplayName {
 142                         get { return englishName; }
 143                 }
 144
 145                 public virtual string EnglishName {
 146                         get { return englishName; }
 147                 }
 148
 149                 [System.Runtime.InteropServices.ComVisible(false)]
 150                 public virtual int GeoId {
 151                         get { return regionId; }
 152                 }
 153
 154                 public virtual bool IsMetric {
 155                         get {
 156                                 switch (iso2Name) {
 157                                 case "US":
 158                                 case "UK":
 159                                         return false;
 160                                 default:
 161                                         return true;
 162                                 }
 163                         }
 164                 }
 165
 166                 public virtual string ISOCurrencySymbol {
 167                         get { return isoCurrencySymbol; }
 168                 }
 169
 170                 [ComVisible(false)]
 171                 public virtual string NativeName {
 172                         get { return nativeName; }
 173                 }
 174
 175                 [ComVisible(false)]
 176                 public virtual string CurrencyNativeName {
 177                         get { return currencyNativeName; }
 178                 }
 179
 180                 public virtual string Name {
 181                         get { return iso2Name; }
 182                 }
 183
 184                 public virtual string ThreeLetterISORegionName {
 185                         get { return iso3Name; }
 186                 }
 187
 188                 public virtual string ThreeLetterWindowsRegionName {
 189                         get { return win3Name; }
 190                 }
 191
 192                 public virtual string TwoLetterISORegionName {
 193                         get { return iso2Name; }
 194                 }
 195
 196                 public override bool Equals (object value)
 197                 {
 198                         RegionInfo other = value as RegionInfo;
 199                         return other != null && Name == other.Name;
 200                 }
 201
 202                 public override int GetHashCode ()
 203                 {
 204                         return Name.GetHashCode ();
 205                 }
 206
 207                 public override string ToString ()
 208                 {
 209                         return Name;
 210                 }
 211
 212                 internal static void ClearCachedData ()
 213                 {
 214                         currentRegion = null;
 215                 }
 216         }
 217 }