public static CultureInfo[] GetUserCultures(string acceptLanguage)
{
// Accept-Language: fr-FR , en;q=0.8 , en-us;q=0.5 , de;q=0.3
if (string.IsNullOrWhiteSpace(acceptLanguage))
{
return new CultureInfo[] { }
}
;
var cultures = acceptLanguage
.Split(',')
.Select(s => WeightedLanguage.Parse(s))
.OrderByDescending(w => w.Weight)
.Select(w => GetCultureInfo(w.Language))
.Where(ci => ci != null)
.ToArray();
return(cultures);
}
public static WeightedLanguage Parse(string weightedLanguageString)
{
// de
// en;q=0.8
var parts = weightedLanguageString.Split(';');
var result = new WeightedLanguage {
Language = parts[0].Trim(), Weight = 1.0
};
if (parts.Length > 1)
{
parts[1] = parts[1].Replace("q=", "").Trim();
double d;
if (double.TryParse(parts[1], NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out d))
{
result.Weight = d;
}
}
return(result);
}