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                 // This property is not synchronized with CurrentCulture, so
  43                 // we need to use bootstrap CurrentCulture LCID.
  44                 public static RegionInfo CurrentRegion {
  45                         get {
  46                                 if (currentRegion == null) {
  47                                         // make sure to fill BootstrapCultureID.
  48                                         CultureInfo ci = CultureInfo.CurrentCulture;
  49                                         // If current culture is invariant then region is not available.
  50                                         if (ci != null && CultureInfo.BootstrapCultureID != 0x7F)
  51                                                 currentRegion = new RegionInfo (CultureInfo.BootstrapCultureID);
  52                                         else
  53 #if MONOTOUCH
  54                                                 currentRegion = CreateFromNSLocale ();
  55 #else
  56                                                 currentRegion = null;
  57 #endif
  58                                 }
  59                                 return currentRegion;
  60                         }
  61                 }
  62
  63                 // the following (instance) fields must be _first_ and stay synchronized
  64                 // with the mono's MonoRegionInfo defined in mono/metadata/object-internals.h
  65 #pragma warning disable 649
  66                 int regionId;
  67                 string iso2Name;
  68                 string iso3Name;
  69                 string win3Name;
  70                 string englishName;
  71                 string nativeName;
  72                 string currencySymbol;
  73                 string isoCurrencySymbol;
  74                 string currencyEnglishName;
  75                 string currencyNativeName;
  76 #pragma warning restore 649
  77
  78                 public RegionInfo (int culture)
  79                 {
  80                         if (!GetByTerritory (CultureInfo.GetCultureInfo (culture)))
  81                                 throw new ArgumentException (
  82                                         String.Format ("Region ID {0} (0x{0:X4}) is not a supported region.", culture), "culture");
  83                 }
  84
  85                 public RegionInfo (string name)
  86                 {
  87                         if (name == null)
  88                                 throw new ArgumentNullException ();
  89
  90                         if (construct_internal_region_from_name (name.ToUpperInvariant ())) {
  91                                 return;
  92                         }
  93                         if (!GetByTerritory (CultureInfo.GetCultureInfo (name)))
  94                                 throw new ArgumentException (String.Format ("Region name {0} is not supported.", name), "name");
  95                 }
  96
  97                 bool GetByTerritory (CultureInfo ci)
  98                 {
  99                         if (ci == null)
 100                                 throw new Exception ("INTERNAL ERROR: should not happen.");
 101                         if (ci.IsNeutralCulture || ci.Territory == null)
 102                                 return false;
 103
 104                         return construct_internal_region_from_name (ci.Territory.ToUpperInvariant ());
 105                 }
 106
 107                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 108                 private extern bool construct_internal_region_from_name (string name);
 109
 110                 [System.Runtime.InteropServices.ComVisible(false)]
 111                 public virtual string CurrencyEnglishName {
 112                         get { return currencyEnglishName; }
 113                 }
 114
 115                 public virtual string CurrencySymbol {
 116                         get { return currencySymbol; }
 117                 }
 118
 119                 [MonoTODO ("DisplayName currently only returns the EnglishName")]
 120                 public virtual string DisplayName {
 121                         get { return englishName; }
 122                 }
 123
 124                 public virtual string EnglishName {
 125                         get { return englishName; }
 126                 }
 127
 128                 [System.Runtime.InteropServices.ComVisible(false)]
 129                 public virtual int GeoId {
 130                         get { return regionId; }
 131                 }
 132
 133                 public virtual bool IsMetric {
 134                         get {
 135                                 switch (iso2Name) {
 136                                 case "US":
 137                                 case "UK":
 138                                         return false;
 139                                 default:
 140                                         return true;
 141                                 }
 142                         }
 143                 }
 144
 145                 public virtual string ISOCurrencySymbol {
 146                         get { return isoCurrencySymbol; }
 147                 }
 148
 149                 [ComVisible(false)]
 150                 public virtual string NativeName {
 151                         get { return nativeName; }
 152                 }
 153
 154                 [ComVisible(false)]
 155                 public virtual string CurrencyNativeName {
 156                         get { return currencyNativeName; }
 157                 }
 158
 159                 public virtual string Name {
 160                         get { return iso2Name; }
 161                 }
 162
 163                 public virtual string ThreeLetterISORegionName {
 164                         get { return iso3Name; }
 165                 }
 166
 167                 public virtual string ThreeLetterWindowsRegionName {
 168                         get { return win3Name; }
 169                 }
 170
 171                 public virtual string TwoLetterISORegionName {
 172                         get { return iso2Name; }
 173                 }
 174
 175                 public override bool Equals (object value)
 176                 {
 177                         RegionInfo other = value as RegionInfo;
 178                         return other != null && Name == other.Name;
 179                 }
 180
 181                 public override int GetHashCode ()
 182                 {
 183                         return Name.GetHashCode ();
 184                 }
 185
 186                 public override string ToString ()
 187                 {
 188                         return Name;
 189                 }
 190         }
 191 }