class/corlib/System.Globalization/RegionInfo.cs

   1 //
   2 // System.Globalization.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         [System.Runtime.InteropServices.ComVisible(true)]
  36         [Serializable]
  37         public class RegionInfo
  38         {
  39                 static RegionInfo currentRegion;
  40
  41                 // This property is not synchronized with CurrentCulture, so
  42                 // we need to use bootstrap CurrentCulture LCID.
  43                 public static RegionInfo CurrentRegion {
  44                         get {
  45                                 if (currentRegion == null) {
  46                                         // make sure to fill BootstrapCultureID.
  47                                         CultureInfo ci = CultureInfo.CurrentCulture;
  48                                         // If current culture is invariant then region is not available.
  49                                         if (ci == null || CultureInfo.BootstrapCultureID == 0x7F)
  50                                                 return null;
  51                                         currentRegion = new RegionInfo (CultureInfo.BootstrapCultureID);
  52                                 }
  53                                 return currentRegion;
  54                         }
  55                 }
  56
  57                 int lcid; // it is used only for Equals() (not even used in GetHashCode()).
  58
  59 #pragma warning disable 649
  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 #pragma warning restore 649
  69
  70                 public RegionInfo (int culture)
  71                 {
  72                         if (!GetByTerritory (CultureInfo.GetCultureInfo (culture)))
  73                                 throw new ArgumentException (
  74                                         String.Format ("Region ID {0} (0x{0:X4}) is not a supported region.", culture), "culture");
  75                 }
  76
  77                 public RegionInfo (string name)
  78                 {
  79                         if (name == null)
  80                                 throw new ArgumentNullException ();
  81
  82                         if (construct_internal_region_from_name (name.ToUpperInvariant ())) {
  83                                 lcid = name.GetHashCode (); // random-ish
  84                                 return;
  85                         }
  86                         if (!GetByTerritory (CultureInfo.GetCultureInfo (name)))
  87                                 throw new ArgumentException (String.Format ("Region name {0} is not supported.", name), "name");
  88                 }
  89
  90                 bool GetByTerritory (CultureInfo ci)
  91                 {
  92                         if (ci == null)
  93                                 throw new Exception ("INTERNAL ERROR: should not happen.");
  94                         if (ci.IsNeutralCulture || ci.Territory == null)
  95                                 return false;
  96                         this.lcid = ci.LCID;
  97                         return construct_internal_region_from_name (ci.Territory.ToUpperInvariant ());
  98                 }
  99
 100                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 101                 private extern bool construct_internal_region_from_name (string name);
 102
 103                 [System.Runtime.InteropServices.ComVisible(false)]
 104                 public virtual string CurrencyEnglishName {
 105                         get { return currencyEnglishName; }
 106                 }
 107
 108                 public virtual string CurrencySymbol {
 109                         get { return currencySymbol; }
 110                 }
 111
 112                 [MonoTODO ("DisplayName currently only returns the EnglishName")]
 113                 public virtual string DisplayName {
 114                         get { return englishName; }
 115                 }
 116
 117                 public virtual string EnglishName {
 118                         get { return englishName; }
 119                 }
 120
 121                 [System.Runtime.InteropServices.ComVisible(false)]
 122                 public virtual int GeoId {
 123                         get { return regionId; }
 124                 }
 125
 126                 public virtual bool IsMetric {
 127                         get {
 128                                 switch (iso2Name) {
 129                                 case "US":
 130                                 case "UK":
 131                                         return false;
 132                                 default:
 133                                         return true;
 134                                 }
 135                         }
 136                 }
 137
 138                 public virtual string ISOCurrencySymbol {
 139                         get { return isoCurrencySymbol; }
 140                 }
 141
 142                 [System.Runtime.InteropServices.ComVisible(false)]
 143                 public virtual string NativeName {
 144                         get { return DisplayName; }
 145                 }
 146
 147                 [MonoTODO ("Not implemented")]
 148                 [System.Runtime.InteropServices.ComVisible(false)]
 149                 public virtual string CurrencyNativeName {
 150                         get { throw new NotImplementedException (); }
 151                 }
 152
 153                 public virtual string Name {
 154                         get { return iso2Name; }
 155                 }
 156
 157                 public virtual string ThreeLetterISORegionName {
 158                         get { return iso3Name; }
 159                 }
 160
 161                 public virtual string ThreeLetterWindowsRegionName {
 162                         get { return win3Name; }
 163                 }
 164
 165                 public virtual string TwoLetterISORegionName {
 166                         get { return iso2Name; }
 167                 }
 168
 169                 //
 170                 // methods
 171
 172                 public override bool Equals (object value)
 173                 {
 174                         RegionInfo other = value as RegionInfo;
 175                         return other != null && lcid == other.lcid;
 176                 }
 177
 178                 public override int GetHashCode ()
 179                 {
 180                         return (int) (0x80000000 + (regionId << 3) + regionId); // it i still based on regionId
 181                 }
 182
 183                 public override string ToString ()
 184                 {
 185                         return Name;
 186                 }
 187         }
 188 }