| | | 1 | | // ----------------------------------------------------------------------- |
| | | 2 | | // <copyright file="CultureFallbackPolicies.cs" company="Stéphane ANDRE"> |
| | | 3 | | // Copyright (c) Stéphane ANDRE. All rights reserved. |
| | | 4 | | // </copyright> |
| | | 5 | | // ----------------------------------------------------------------------- |
| | | 6 | | |
| | | 7 | | using System.Globalization; |
| | | 8 | | |
| | | 9 | | namespace MyNet.Globalization.Localization.Policies; |
| | | 10 | | |
| | | 11 | | /// <summary> |
| | | 12 | | /// Provides built-in <see cref="ICultureFallbackPolicy"/> implementations. |
| | | 13 | | /// </summary> |
| | | 14 | | public static class CultureFallbackPolicies |
| | | 15 | | { |
| | | 16 | | /// <summary> |
| | | 17 | | /// Gets a policy that never falls back: returns <c>null</c> for any culture. |
| | | 18 | | /// </summary> |
| | 16 | 19 | | public static ICultureFallbackPolicy None { get; } = new NonePolicy(); |
| | | 20 | | |
| | | 21 | | /// <summary> |
| | | 22 | | /// Gets a policy that walks up the culture hierarchy: |
| | | 23 | | /// <c>en-US</c> → <c>en</c> → <see cref="CultureInfo.InvariantCulture"/>. |
| | | 24 | | /// </summary> |
| | 16 | 25 | | public static ICultureFallbackPolicy ParentCulture { get; } = new ParentCulturePolicy(); |
| | | 26 | | |
| | | 27 | | private sealed class NonePolicy : ICultureFallbackPolicy |
| | | 28 | | { |
| | 6 | 29 | | public CultureInfo? GetFallback(CultureInfo culture) => null; |
| | | 30 | | } |
| | | 31 | | |
| | | 32 | | private sealed class ParentCulturePolicy : ICultureFallbackPolicy |
| | | 33 | | { |
| | 2292 | 34 | | public CultureInfo? GetFallback(CultureInfo culture) => culture.Equals(CultureInfo.InvariantCulture) ? null : cu |
| | | 35 | | } |
| | | 36 | | } |
| | | 37 | | |