public static string Get(HttpContext context, IRequestedLanguageTagAccessor accessor) {
var antChain = GetAntChain();
var languageTag = string.Empty;
if (antChain is null) {
languageTag = GetFromCookie(context, accessor);
} else {
do {
var antPosNames = antChain.AntPosNames is null || antChain.AntPosNames.Count == 0
? new[] {AntPosNameConstants.LANGUAGE_TAG}
: antChain.AntPosNames.ToArray();
languageTag = antChain.From switch {
AntFrom.Cookie => GetFromCookie(context, accessor, antPosNames),
AntFrom.Route => GetFromRoute(context, antPosNames),
AntFrom.QueryString => GetFromQuery(context, antPosNames),
AntFrom.Forms => GetFromForms(context, antPosNames),
AntFrom.Headers => GetFromHeader(context, antPosNames),
_ => languageTag
};
if (!string.IsNullOrWhiteSpace(languageTag))
break;
antChain = antChain.Next;
} while (antChain != null);
}
return languageTag;
}
/// <summary>
/// Invoke async
/// </summary>
/// <param name="context"></param>
/// <param name="accessor"></param>
/// <returns></returns>
public async Task InvokeAsync(HttpContext context, IRequestedLanguageTagAccessor accessor)
{
//Set current LanguageTag in LanguageTagCoreManager.
//If the value is null, empty or whitespace, will be used 'DefaultLocaleStr' - 'en_US'.
var languageTag = AntManager.Get(context, accessor);
LanguageTagCoreManager.UpdateTag(languageTag);
await _next(context);
}
private static string GetFromCookie(HttpContext context, IRequestedLanguageTagAccessor accessor, params string[] antPosNames) {
var languageTag = string.Empty;
foreach (var antPosName in antPosNames) {
languageTag = accessor is null || !accessor.HasContext
? context.Request.Cookies[antPosName]
: accessor.Get(antPosName);
if (!string.IsNullOrWhiteSpace(languageTag))
return languageTag;
}
return languageTag;
}
/// <summary>
/// Create a new instance of <see cref="AnonymousTagHelper"/>.
/// </summary>
/// <param name="accessor"></param>
/// <param name="textProvider"></param>
public AnonymousTagHelper(IRequestedLanguageTagAccessor accessor, ITextProvider textProvider)
: base(accessor, textProvider)
{
}
/// <summary>
/// Create a new instance of <see cref="BaseTagHelper"/>.
/// </summary>
/// <param name="accessor"></param>
/// <param name="textProvider"></param>
protected BaseTagHelper(IRequestedLanguageTagAccessor accessor, ITextProvider textProvider)
{
_accessor = accessor ?? throw new ArgumentNullException(nameof(accessor));
_textProvider = textProvider ?? throw new ArgumentNullException(nameof(textProvider));
}
/// <summary>
/// Create a new instance of <see cref="TranslateTagHelper"/>.
/// </summary>
/// <param name="accessor"></param>
/// <param name="textProvider"></param>
public TranslateTagHelper(IRequestedLanguageTagAccessor accessor, ITextProvider textProvider)
: base(accessor, textProvider)
{
}
public static string MayLanguageTag(this IRequestedLanguageTagAccessor accessor, string languageTag, string languageTagBodyName = null)
{
return(string.IsNullOrWhiteSpace(languageTag) ? accessor.Get(languageTagBodyName) : languageTag);
}
/// <summary>
/// Create a new instance of <see cref="HostedLanguageTagFactory"/>.
/// </summary>
/// <param name="requestedAccessor"></param>
public HostedLanguageTagFactory(IRequestedLanguageTagAccessor requestedAccessor)
{
_requestedLanguageTagAccessor = requestedAccessor;
}
