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

   1 //
   2 // RegionInfo.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7
   8 //
   9 // Copyright (C) 2005 Novell, Inc (http://www.novell.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.Globalization;
  31 using System.Runtime.CompilerServices;
  32
  33 namespace System.Globalization
  34 {
  35 #if NET_2_0
  36         [System.Runtime.InteropServices.ComVisible(true)]
  37 #endif
  38         [Serializable]
  39         public class RegionInfo
  40         {
  41                 static RegionInfo currentRegion;
  42
  43                 // This property is not synchronized with CurrentCulture, so
  44                 // we need to use bootstrap CurrentCulture LCID.
  45                 public static RegionInfo CurrentRegion {
  46                         get {
  47                                 if (currentRegion == null) {
  48                                         // make sure to fill BootstrapCultureID.
  49                                         CultureInfo ci = CultureInfo.CurrentCulture;
  50                                         // If current culture is invariant then region is not available.
  51                                         if (ci == null || CultureInfo.BootstrapCultureID == 0x7F)
  52                                                 return null;
  53                                         currentRegion = new RegionInfo (CultureInfo.BootstrapCultureID);
  54                                 }
  55                                 return currentRegion;
  56                         }
  57                 }
  58
  59                 int lcid; // it is used only for Equals() (not even used in GetHashCode()).
  60                 int regionId;
  61                 string iso2Name;
  62                 string iso3Name;
  63                 string win3Name;
  64                 string englishName;
  65                 string currencySymbol;
  66                 string isoCurrencySymbol;
  67                 string currencyEnglishName;
  68
  69                 public RegionInfo (int lcid)
  70                 {
  71 #if NET_2_0
  72                         if (!GetByTerritory (CultureInfo.GetCultureInfo (lcid)))
  73                                 throw new ArgumentException (
  74                                         String.Format ("Region ID {0} (0x{0:X4}) is not a supported region.", lcid), "lcid");
  75 #else
  76                         if (!construct_internal_region_from_lcid (lcid))
  77                                 throw new ArgumentException (
  78                                         String.Format ("Region ID {0} (0x{0:X4}) is not a " +
  79                                                         "supported region.", lcid), "lcid");
  80 #endif
  81                 }
  82
  83                 public RegionInfo (string name)
  84                 {
  85                         if (name == null)
  86                                 throw new ArgumentNullException ();
  87
  88 #if NET_2_0
  89                         if (construct_internal_region_from_name (name.ToUpperInvariant ())) {
  90                                 lcid = name.GetHashCode (); // random-ish
  91                                 return;
  92                         }
  93                         if (!GetByTerritory (CultureInfo.GetCultureInfo (name)))
  94                                 throw new ArgumentException (String.Format ("Region name {0} is not supported.", name), "name");
  95 #else
  96                         if (!construct_internal_region_from_name (name.ToUpperInvariant ()))
  97                                 throw new ArgumentException ("Region name " + name +
  98                                                 " is not supported.", "name");
  99 #endif
 100                 }
 101
 102                 bool GetByTerritory (CultureInfo ci)
 103                 {
 104                         if (ci == null)
 105                                 throw new Exception ("INTERNAL ERROR: should not happen.");
 106                         if (ci.IsNeutralCulture || ci.Territory == null)
 107                                 return false;
 108                         this.lcid = ci.LCID;
 109                         return construct_internal_region_from_name (ci.Territory.ToUpperInvariant ());
 110                 }
 111
 112                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 113                 private extern bool construct_internal_region_from_lcid (int lcid);
 114
 115                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 116                 private extern bool construct_internal_region_from_name (string name);
 117
 118 #if NET_2_0
 119                 [System.Runtime.InteropServices.ComVisible(false)]
 120                 public virtual string CurrencyEnglishName {
 121                         get { return currencyEnglishName; }
 122                 }
 123 #endif
 124
 125                 public virtual string CurrencySymbol {
 126                         get { return currencySymbol; }
 127                 }
 128
 129                 [MonoTODO ("DisplayName currently only returns the EnglishName")]
 130                 public virtual string DisplayName {
 131                         get { return englishName; }
 132                 }
 133
 134                 public virtual string EnglishName {
 135                         get { return englishName; }
 136                 }
 137
 138 #if NET_2_0
 139                 public virtual int GeoId {
 140                         get { return regionId; }
 141                 }
 142 #endif
 143
 144                 public virtual bool IsMetric {
 145                         get {
 146                                 switch (iso2Name) {
 147                                 case "US":
 148                                 case "UK":
 149                                         return false;
 150                                 default:
 151                                         return true;
 152                                 }
 153                         }
 154                 }
 155
 156                 public virtual string ISOCurrencySymbol {
 157                         get { return isoCurrencySymbol; }
 158                 }
 159
 160 #if NET_2_0
 161                 [System.Runtime.InteropServices.ComVisible(false)]
 162                 public virtual string NativeName {
 163                         get { return DisplayName; }
 164                 }
 165
 166                 [MonoTODO ("Not implemented")]
 167                 public virtual string CurrencyNativeName {
 168                         get { throw new NotImplementedException (); }
 169                 }
 170 #endif
 171
 172                 public virtual string Name {
 173                         get { return iso2Name; }
 174                 }
 175
 176                 public virtual string ThreeLetterISORegionName {
 177                         get { return iso3Name; }
 178                 }
 179
 180                 public virtual string ThreeLetterWindowsRegionName {
 181                         get { return win3Name; }
 182                 }
 183
 184                 public virtual string TwoLetterISORegionName {
 185                         get { return iso2Name; }
 186                 }
 187
 188                 //
 189                 // methods
 190
 191 #if NET_2_0
 192                 public override bool Equals (object value)
 193                 {
 194                         RegionInfo other = value as RegionInfo;
 195                         return other != null && lcid == other.lcid;
 196                 }
 197
 198                 public override int GetHashCode ()
 199                 {
 200                         return (int) (0x80000000 + (regionId << 3) + regionId); // it i still based on regionId
 201                 }
 202 #else
 203                 public override bool Equals (object value)
 204                 {
 205                         RegionInfo other = value as RegionInfo;
 206                         return other != null && regionId == other.regionId;
 207                 }
 208
 209                 public override int GetHashCode () {
 210                         return regionId;
 211                 }
 212 #endif
 213
 214                 public override string ToString ()
 215                 {
 216                         return Name;
 217                 }
 218         }
 219 }