Shadowghost
45 lines
1.8 KiB
C#
45 lines
1.8 KiB
C#
using System;
|
|
|
|
namespace MediaBrowser.Providers.Manager;
|
|
|
|
/// <summary>
|
|
/// Helpers for comparing the language of fetched metadata with the language that was requested.
|
|
/// </summary>
|
|
internal static class MetadataLanguageUtils
|
|
{
|
|
/// <summary>
|
|
/// Gets the language subtag of a language tag, e.g. "es" for "es-ES".
|
|
/// </summary>
|
|
/// <param name="language">The language tag.</param>
|
|
/// <returns>The language subtag, lowercased, or <c>null</c> if none was given.</returns>
|
|
public static string? GetLanguageSubtag(string? language)
|
|
{
|
|
if (string.IsNullOrEmpty(language))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
var separator = language.IndexOf('-', StringComparison.Ordinal);
|
|
|
|
return (separator == -1 ? language : language[..separator]).ToLowerInvariant();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines whether a provider result can be considered to be in the requested language.
|
|
/// </summary>
|
|
/// <param name="resultLanguage">The language the provider reported for its result, if any.</param>
|
|
/// <param name="preferredLanguage">The language that was requested, if any.</param>
|
|
/// <returns><c>true</c> if the result is in the requested language or either language is unknown.</returns>
|
|
public static bool MatchesPreferredLanguage(string? resultLanguage, string? preferredLanguage)
|
|
{
|
|
// A provider that doesn't report a language cannot be judged, assume it honored the request
|
|
if (string.IsNullOrEmpty(resultLanguage) || string.IsNullOrEmpty(preferredLanguage))
|
|
{
|
|
return true;
|
|
}
|
|
|
|
// Compare on the language subtag only so that e.g. "es" matches "es-ES"
|
|
return string.Equals(GetLanguageSubtag(resultLanguage), GetLanguageSubtag(preferredLanguage), StringComparison.Ordinal);
|
|
}
|
|
}
|