internal static unsafe CultureData GetCurrentRegionData()
{
Span <char> geoIso2Letters = stackalloc char[10];
int geoId = Interop.Kernel32.GetUserGeoID(Interop.Kernel32.GEOCLASS_NATION);
if (geoId != Interop.Kernel32.GEOID_NOT_AVAILABLE)
{
int geoIsoIdLength;
fixed(char *pGeoIsoId = geoIso2Letters)
{
geoIsoIdLength = Interop.Kernel32.GetGeoInfo(geoId, Interop.Kernel32.GEO_ISO2, pGeoIsoId, geoIso2Letters.Length, 0);
}
if (geoIsoIdLength != 0)
{
geoIsoIdLength -= geoIso2Letters[geoIsoIdLength - 1] == 0 ? 1 : 0; // handle null termination and exclude it.
CultureData?cd = GetCultureDataForRegion(geoIso2Letters.Slice(0, geoIsoIdLength).ToString(), true);
if (cd != null)
{
return(cd);
}
}
}
// Fallback to current locale data.
return(CultureInfo.CurrentCulture._cultureData);
}
internal NumberFormatInfo(CultureData?cultureData)
{
if (cultureData != null)
{
// We directly use fields here since these data is coming from data table or Win32, so we
// don't need to verify their values (except for invalid parsing situations).
cultureData.GetNFIValues(this);
InitializeInvariantAndNegativeSignFlags();
}
}
private static CultureInfo?CreateCultureInfoNoThrow(string name, bool useUserOverride)
{
Debug.Assert(name != null);
CultureData?cultureData = CultureData.GetCultureData(name, useUserOverride);
if (cultureData == null)
{
return(null);
}
return(new CultureInfo(cultureData));
}
public CultureInfo(string name, bool useUserOverride)
{
ArgumentNullException.ThrowIfNull(name);
// Get our data providing record
CultureData?cultureData = CultureData.GetCultureData(name, useUserOverride);
if (cultureData == null)
{
throw new CultureNotFoundException(nameof(name), name, GetCultureNotSupportedExceptionMessage());
}
_cultureData = cultureData;
_name = _cultureData.CultureName;
_isInherited = GetType() != typeof(CultureInfo);
}
/// <summary>
/// Constructor called by SQL Server's special munged culture - creates a culture with
/// a TextInfo and CompareInfo that come from a supplied alternate source. This object
/// is ALWAYS read-only.
/// Note that we really cannot use an LCID version of this override as the cached
/// name we create for it has to include both names, and the logic for this is in
/// the GetCultureInfo override *only*.
/// </summary>
internal CultureInfo(string cultureName, string textAndCompareCultureName)
{
if (cultureName == null)
{
throw new ArgumentNullException(nameof(cultureName), SR.ArgumentNull_String);
}
CultureData?cultureData = CultureData.GetCultureData(cultureName, false);
if (cultureData == null)
{
throw new CultureNotFoundException(nameof(cultureName), cultureName, SR.Argument_CultureNotSupported);
}
_cultureData = cultureData;
_name = _cultureData.CultureName;
CultureInfo altCulture = GetCultureInfo(textAndCompareCultureName);
_compareInfo = altCulture.CompareInfo;
_textInfo = altCulture.TextInfo;
}