/// <summary>
/// Creates or reuses a number formatter for the specified <see cref="Locale"/>.
/// </summary>
/// <param name="locale">
/// The locale.
/// </param>
/// <param name="options">
/// The options to apply when formating a number.
/// </param>
/// <returns>
/// The formatter that is the best for the <paramref name="locale"/>.
/// </returns>
public static INumberFormatter Create(Locale locale, NumberOptions options = null)
{
var numberingSystem = NumberingSystem.Create(locale);
NumberFormatter formatter;
if (numberingSystem.IsNumeric)
{
formatter = new NumericFormatter
{
Locale = locale,
NumberingSystem = numberingSystem,
Symbols = NumberSymbols.Create(locale),
Options = options ?? new NumberOptions()
};
}
else // Must be Algorithmic
{
formatter = new AlgorithmicFormatter
{
Locale = locale,
NumberingSystem = numberingSystem,
Options = options ?? new NumberOptions()
};
}
formatter.Resolve();
return(formatter);
}
/// <summary>
/// Creates or reuses a numbering system for the specified <see cref="Locale"/>.
/// </summary>
/// <param name="locale">
/// The locale.
/// </param>
/// <returns>
/// A numbering system that is the best for the <paramref name="locale"/>.
/// </returns>
/// <remarks>
/// The locale identifier can use the "u-nu-XXX" extension to specify a numbering system.
/// If the extension's numbering system doesn't exist or is not specified,
/// then the default numbering system for the locale is used.
/// <para>
/// The <see href="http://unicode.org/reports/tr35/tr35-numbers.html#otherNumberingSystems">other numbering systems</see>
/// ("u-nu-native", "u-nu-finance" and "u-nu-traditio") are also allowed.
/// </para>
/// </remarks>
public static NumberingSystem Create(Locale locale)
{
string name;
if (locale.Id.UnicodeExtension.Keywords.TryGetValue("nu", out name))
{
try
{
if (Others.Contains(name))
{
// Consistency is the hobgoblin of small minds.
var other = name == "traditio"
? "traditional"
: name;
name = locale.Find($"ldml/numbers/otherNumberingSystems/{other}").Value;
}
return(NumberingSystem.Create(name));
}
catch (KeyNotFoundException)
{
// eat it, will fallback to default numbering system.
}
}
// Find the default numbering system for the locale.
var ns = locale.Find("ldml/numbers/defaultNumberingSystem/text()").Value;
return(NumberingSystem.Create(ns));
}
/// <summary>
/// Creates the symbols for the specified <see cref="Locale"/>.
/// </summary>
/// <param name="locale">
/// The locale.
/// </param>
/// <returns>
/// The symbols that are the best for the <paramref name="locale"/>.
/// </returns>
public static NumberSymbols Create(Locale locale)
{
var ns = NumberingSystem.Create(locale).Id;
var path = $"ldml/numbers/symbols[@numberSystem='{ns}']/";
var symbols = new NumberSymbols
{
Decimal = locale.Find(path + "decimal").Value,
Exponential = locale.Find(path + "exponential").Value,
Group = locale.Find(path + "group").Value,
Infinity = locale.Find(path + "infinity").Value,
List = locale.Find(path + "list").Value,
MinusSign = locale.Find(path + "minusSign").Value,
NotANumber = locale.Find(path + "nan").Value,
PercentSign = locale.Find(path + "percentSign").Value,
PerMille = locale.Find(path + "perMille").Value,
PlusSign = locale.Find(path + "plusSign").Value,
SuperscriptingExponent = locale.Find(path + "superscriptingExponent").Value
};
var found = locale.FindOrDefault(path + "currencyDecimal");
if (found != null)
{
symbols.CurrencyDecimal = found.Value;
}
found = locale.FindOrDefault(path + "currencyGroup");
if (found != null)
{
symbols.CurrencyGroup = found.Value;
}
return(symbols);
}
public void Create_From_Id()
{
var hanidec = NumberingSystem.Create("HANIDEC");
Assert.AreEqual("hanidec", hanidec.Id);
Assert.AreEqual("〇一二三四五六七八九", String.Join("", hanidec.Digits));
}
public void Digits()
{
var ns = NumberingSystem.Create("mathbold");
Assert.AreEqual("\U0001D7CE", ns.Digits[0]);
Assert.AreEqual("\U0001D7D7", ns.Digits[9]);
}
public void Create_Uses_A_Cache()
{
var a = NumberingSystem.Create("arab");
var b = NumberingSystem.Create("arab");
var c = NumberingSystem.Create("arabext");
Assert.AreSame(a, b);
Assert.AreNotSame(a, c);
}
public void Create_From_Locale_Traditional()
{
var ta_default = Locale.Create("ta");
Assert.AreEqual("latn", NumberingSystem.Create(ta_default).Id);
var ta_traditional = Locale.Create("ta-u-nu-traditio");
Assert.AreEqual("taml", NumberingSystem.Create(ta_traditional).Id);
}
public void Create_From_Locale_Finance()
{
var zh_default = Locale.Create("zh");
Assert.AreEqual("latn", NumberingSystem.Create(zh_default).Id);
var zh_finance = Locale.Create("zh-u-nu-finance");
Assert.AreEqual("hansfin", NumberingSystem.Create(zh_finance).Id);
}
public void Create_From_Locale_Native()
{
var hi_default = Locale.Create("hi-IN");
Assert.AreEqual("latn", NumberingSystem.Create(hi_default).Id);
var hi_native = Locale.Create("hi-IN-u-nu-native");
Assert.AreEqual("deva", NumberingSystem.Create(hi_native).Id);
}
public void Create_From_Locale_Default()
{
var en = Locale.Create("en");
Assert.AreEqual("latn", NumberingSystem.Create(en).Id);
var ar = Locale.Create("ar");
Assert.AreEqual("arab", NumberingSystem.Create(ar).Id);
}
public void Create_From_Locale_Specified()
{
var a = Locale.Create("zh");
Assert.AreEqual("latn", NumberingSystem.Create(a).Id);
var b = Locale.Create("zh-u-nu-hanidec");
Assert.AreEqual("hanidec", NumberingSystem.Create(b).Id);
var c = Locale.Create("zh-u-nu-unknown");
Assert.AreEqual("latn", NumberingSystem.Create(c).Id);
}
public void Create_From_Undefined_Id()
{
ExceptionAssert.Throws <KeyNotFoundException>(() => NumberingSystem.Create("ns-is-not-defined"));
}
