48 lines
1.6 KiB
C#
48 lines
1.6 KiB
C#
using System.Globalization;
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using System.Text.RegularExpressions;
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using Microsoft.AspNetCore.Localization;
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namespace OliverBooth;
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internal sealed partial class RouteCultureProvider : IRequestCultureProvider
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{
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private static readonly Regex CultureRegex = GetCultureRegex();
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private readonly CultureInfo _defaultCulture;
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private readonly CultureInfo _defaultUiCulture;
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public RouteCultureProvider(CultureInfo requestCulture) : this(new RequestCulture(requestCulture))
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{
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}
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public RouteCultureProvider(RequestCulture requestCulture)
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{
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_defaultCulture = requestCulture.Culture;
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_defaultUiCulture = requestCulture.UICulture;
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}
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public Task<ProviderCultureResult?> DetermineProviderCultureResult(HttpContext httpContext)
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{
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PathString url = httpContext.Request.Path;
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string defaultCulture = _defaultCulture.TwoLetterISOLanguageName;
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string defaultUiCulture = _defaultUiCulture.TwoLetterISOLanguageName;
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if (url.ToString().Length <= 1)
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{
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return Task.FromResult(new ProviderCultureResult(defaultCulture, defaultUiCulture))!;
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}
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string[]? parts = httpContext.Request.Path.Value?.Split('/');
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string requestCulture = parts?[1] ?? string.Empty;
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bool isMatch = CultureRegex.IsMatch(requestCulture);
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string culture = isMatch ? requestCulture : defaultCulture;
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string uiCulture = isMatch ? requestCulture : defaultUiCulture;
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return Task.FromResult(new ProviderCultureResult(culture, uiCulture))!;
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}
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[GeneratedRegex("^[a-z]{2}(-[A-Z]{2})*$")]
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private static partial Regex GetCultureRegex();
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}
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