Add InternationalCallPrefix

TrevorPilley · Nov 25, 2024 · e4cc4e2 · e4cc4e2
1 parent d2eac82
commit e4cc4e2
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diff --git a/README.md b/README.md
@@ -66,6 +66,7 @@ phoneNumber.Country.CallingCode;                   // 44
 phoneNumber.Country.Continent;                     // Europe
 phoneNumber.Country.HasNationalDestinationCodes;   // true
 phoneNumber.Country.HasTrunkPrefix;                // true
+phoneNumber.Country.InternationalCallPrefix;       // 00
 phoneNumber.Country.IsEuropeanUnionMember;         // false
 phoneNumber.Country.IsNatoMember;                  // true
 phoneNumber.Country.Iso3166Code;                   // GB

diff --git a/src/PhoneNumbers/CountryInfo.cs b/src/PhoneNumbers/CountryInfo.cs
@@ -15,11 +15,13 @@ public sealed partial class CountryInfo : IEquatable<CountryInfo>
     internal const string Africa = "Africa";
     internal const string Asia = "Asia";
     internal const string Europe = "Europe";
+    internal const string ItuInternationalCallPrefix = "00";
     internal const string NorthAmerica = "North America";
     internal const string Oceania = "Oceania";
     internal const string SouthAmerica = "South America";
     #if !NET8_0_OR_GREATER
     private static readonly ReadOnlyCollection<int> s_emptyIntArray = new(Array.Empty<int>());
+    private static readonly ReadOnlyDictionary<string, string> s_emptyStringDictionary = new(new Dictionary<string, string>(StringComparer.Ordinal));
     #endif
 
     private static readonly ReadOnlyCollection<PhoneNumberFormatter> s_formatters = new(
@@ -65,6 +67,12 @@ internal CountryInfo()
     /// </summary>
     public bool HasTrunkPrefix => TrunkPrefix is not null;
 
+    /// <summary>
+    /// Gets the international call prefix.
+    /// </summary>
+    /// <remarks>May also be referred to as international direct dialling or international subscriber dialling, defaults to the ITU recommended '00', see https://en.wikipedia.org/wiki/List_of_international_call_prefixes.</remarks>
+    public string InternationalCallPrefix { get; init; } = ItuInternationalCallPrefix;
+
     /// <summary>
     /// Gets a value indicating whether the country is a member of the European Union.
     /// </summary>
@@ -106,6 +114,15 @@ internal CountryInfo()
     /// Gets the <see cref="PhoneNumberFormatProvider"/> for the country.
     /// </summary>
     internal PhoneNumberFormatProvider FormatProvider { get; init; } = ComplexPhoneNumberFormatProvider.Default;
+    /// <summary>
+    /// Gets country specific international call prefixes.
+    /// </summary>
+    internal ReadOnlyDictionary<string, string> InternationalCallPrefixes { get; init; } =
+    #if NET8_0_OR_GREATER
+    ReadOnlyDictionary<string, string>.Empty;
+    #else
+    s_emptyStringDictionary;
+    #endif
 
     /// <summary>
     /// Gets the possible lengths of the national destination code.

diff --git a/src/PhoneNumbers/CountryInfo_Africa.cs b/src/PhoneNumbers/CountryInfo_Africa.cs
@@ -27,6 +27,12 @@ public partial class CountryInfo
         CallingCode = "254",
         Continent = Africa,
         FormatProvider = SimplePhoneNumberFormatProvider.Default,
+        InternationalCallPrefix = "000",
+        InternationalCallPrefixes = new Dictionary<string, string>(StringComparer.Ordinal)
+        {
+            { "255", "007" }, // To call Tanzania from Kenya, subscribers dial 007 instead of +255
+            { "256", "006" }, // To call Uganda from Kenya, subscribers dial 006 instead of +256
+        }.AsReadOnly(),
         Iso3166Code = "KE",
         Name = "Kenya",
         NdcLengths = new ReadOnlyCollection<int>([3, 2]),
@@ -42,6 +48,7 @@ public partial class CountryInfo
         AllowsLocalGeographicDialling = true,
         CallingCode = "234",
         Continent = Africa,
+        InternationalCallPrefix = "009",
         Iso3166Code = "NG",
         Name = "Nigeria",
         NdcLengths = new ReadOnlyCollection<int>([4, 3]),
@@ -70,6 +77,12 @@ public partial class CountryInfo
     {
         CallingCode = "255",
         Continent = Africa,
+        InternationalCallPrefix = "000",
+        InternationalCallPrefixes = new Dictionary<string, string>(StringComparer.Ordinal)
+        {
+            { "254", "005" }, // To call Kenya from Tanzania, subscribers dial 005 instead of +254
+            { "256", "006" }, // To call Uganda from Tanzania, subscribers dial 006 instead of +256
+        }.AsReadOnly(),
         Iso3166Code = "TZ",
         Name = "Tanzania",
         NdcLengths = new ReadOnlyCollection<int>([5, 3, 2]),
@@ -85,6 +98,12 @@ public partial class CountryInfo
         CallingCode = "256",
         Continent = Africa,
         FormatProvider = UGPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = "000",
+        InternationalCallPrefixes = new Dictionary<string, string>(StringComparer.Ordinal)
+        {
+            { "254", "005" }, // To call Kenya from Uganda, subscribers dial 005 instead of +254
+            { "255", "007" }, // To call Tanzania from Uganda, subscribers dial 007 instead of +255
+        }.AsReadOnly(),
         Iso3166Code = "UG",
         Name = "Uganda",
         NdcLengths = new ReadOnlyCollection<int>([6, 5, 4, 3, 1]),

diff --git a/src/PhoneNumbers/CountryInfo_Asia.cs b/src/PhoneNumbers/CountryInfo_Asia.cs
@@ -12,6 +12,7 @@ public partial class CountryInfo
     {
         CallingCode = "852",
         Continent = Asia,
+        InternationalCallPrefix = "001",
         Iso3166Code = "HK",
         Name = "Hong Kong",
         NsnLengths = new ReadOnlyCollection<int>([8, 9, 11, 12]),
@@ -36,6 +37,7 @@ public partial class CountryInfo
     {
         CallingCode = "65",
         Continent = Asia,
+        InternationalCallPrefix = "000",
         Iso3166Code = "SG",
         Name = "Singapore",
         NsnLengths = new ReadOnlyCollection<int>([8, 10, 11]),

diff --git a/src/PhoneNumbers/CountryInfo_Europe.cs b/src/PhoneNumbers/CountryInfo_Europe.cs
@@ -29,6 +29,7 @@ public partial class CountryInfo
         CallingCode = "375",
         Continent = Europe,
         FormatProvider = SimplePhoneNumberFormatProvider.Default,
+        InternationalCallPrefix = "8~10",
         Iso3166Code = "BY",
         Name = "Belarus",
         NdcLengths = new ReadOnlyCollection<int>([4, 3, 2]),

diff --git a/src/PhoneNumbers/CountryInfo_NorthAmerica.cs b/src/PhoneNumbers/CountryInfo_NorthAmerica.cs
@@ -6,6 +6,7 @@ namespace PhoneNumbers;
 public partial class CountryInfo
 {
     internal const string NanpCallingCode = "1";
+    internal const string NanpInternationalCallPrefix = "011";
     private static readonly ReadOnlyCollection<int> s_nanpNdcLengths = new([3]);
     private static readonly ReadOnlyCollection<int> s_nanpNsnLengths = new([10]);
 
@@ -18,6 +19,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "AI",
         Name = "Anguilla",
         NdcLengths = s_nanpNdcLengths,
@@ -34,6 +36,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "AG",
         Name = "Antigua and Barbuda",
         NdcLengths = s_nanpNdcLengths,
@@ -50,6 +53,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "BS",
         Name = "Bahamas",
         NdcLengths = s_nanpNdcLengths,
@@ -66,6 +70,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "BB",
         Name = "Barbados",
         NdcLengths = s_nanpNdcLengths,
@@ -82,6 +87,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "BM",
         Name = "Bermuda",
         NdcLengths = s_nanpNdcLengths,
@@ -98,6 +104,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "VG",
         Name = "British Virgin Islands",
         NdcLengths = s_nanpNdcLengths,
@@ -114,6 +121,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         IsNatoMember = true,
         Iso3166Code = "CA",
         IsOecdMember = true,
@@ -132,6 +140,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "KY",
         Name = "Cayman Islands",
         NdcLengths = s_nanpNdcLengths,
@@ -148,6 +157,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "DM",
         Name = "Dominica",
         NdcLengths = s_nanpNdcLengths,
@@ -164,6 +174,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "GD",
         Name = "Grenada",
         NdcLengths = s_nanpNdcLengths,
@@ -180,6 +191,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "JM",
         Name = "Jamaica",
         NdcLengths = s_nanpNdcLengths,
@@ -196,6 +208,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "MS",
         Name = "Montserrat",
         NdcLengths = s_nanpNdcLengths,
@@ -212,6 +225,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "MP",
         Name = "Northern Mariana Island",
         NdcLengths = s_nanpNdcLengths,
@@ -228,6 +242,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "PR",
         Name = "Puerto Rico",
         NdcLengths = s_nanpNdcLengths,
@@ -244,6 +259,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "KN",
         Name = "Saint Kitts and Nevis",
         NdcLengths = s_nanpNdcLengths,
@@ -260,6 +276,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "LC",
         Name = "Saint Lucia",
         NdcLengths = s_nanpNdcLengths,
@@ -276,6 +293,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "VC",
         Name = "Saint Vincent and the Grenadines",
         NdcLengths = s_nanpNdcLengths,
@@ -292,6 +310,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "SX",
         Name = "Sint Maarten",
         NdcLengths = s_nanpNdcLengths,
@@ -308,6 +327,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "TT",
         Name = "Trinidad and Tobago",
         NdcLengths = s_nanpNdcLengths,
@@ -324,6 +344,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "TC",
         Name = "Turks and Caicos Islands",
         NdcLengths = s_nanpNdcLengths,
@@ -340,6 +361,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         IsNatoMember = true,
         Iso3166Code = "US",
         IsOecdMember = true,
@@ -357,6 +379,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = NorthAmerica,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "VI",
         Name = "United States Virgin Islands",
         NdcLengths = s_nanpNdcLengths,

diff --git a/src/PhoneNumbers/CountryInfo_Oceania.cs b/src/PhoneNumbers/CountryInfo_Oceania.cs
@@ -14,6 +14,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = Oceania,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "AS",
         Name = "American Samoa",
         NdcLengths = s_nanpNdcLengths,
@@ -30,6 +31,7 @@ public partial class CountryInfo
         CallingCode = "61",
         Continent = Oceania,
         FormatProvider = AUPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = "0011",
         Iso3166Code = "AU",
         IsOecdMember = true,
         Name = "Australia",
@@ -47,6 +49,7 @@ public partial class CountryInfo
         CallingCode = NanpCallingCode,
         Continent = Oceania,
         FormatProvider = NanpPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = NanpInternationalCallPrefix,
         Iso3166Code = "GU",
         Name = "Guam",
         NdcLengths = s_nanpNdcLengths,

diff --git a/src/PhoneNumbers/CountryInfo_SouthAmerica.cs b/src/PhoneNumbers/CountryInfo_SouthAmerica.cs
@@ -14,6 +14,7 @@ public partial class CountryInfo
         CallingCode = "55",
         Continent = SouthAmerica,
         FormatProvider = BRPhoneNumberFormatProvider.Instance,
+        InternationalCallPrefix = "0xx",
         Iso3166Code = "BR",
         Name = "Brazil",
         NdcLengths = new ReadOnlyCollection<int>([3, 2]),

diff --git a/src/PhoneNumbers/FrameworkExtensions/CollectionExtensions.cs b/src/PhoneNumbers/FrameworkExtensions/CollectionExtensions.cs
@@ -0,0 +1,12 @@
+#if !NET8_0_OR_GREATER
+namespace System.Collections.Generic
+{
+    using System.Collections.ObjectModel;
+
+    internal static class CollectionExtensions
+    {
+        internal static ReadOnlyDictionary<TKey, TValue> AsReadOnly<TKey, TValue>(this IDictionary<TKey, TValue> dictionary) where TKey : notnull =>
+            new ReadOnlyDictionary<TKey, TValue>(dictionary);
+    }
+}
+#endif