public static string ToKatakana(string input, WanaKanaOptions?options = null)
{
if (input is null)
{
throw new ArgumentNullException(nameof(input));
}
options ??= new WanaKanaOptions();
if (input.Length == 0)
{
return(string.Empty);
}
if (options.PassRomaji)
{
return(KanaConverters.HiraganaToKatakana(input));
}
if (MixedChecker.IsMixed(input) || RomajiChecker.IsRomaji(input) || SpecialCharacterChecker.IsEnglishPunctuation(input[0]))
{
var hiragana = KanaConverters.ToKana(input.ToLowerInvariant(), options);
return(KanaConverters.HiraganaToKatakana(hiragana));
}
return(KanaConverters.HiraganaToKatakana(input));
}
/// <summary> /// Test if input contains a mix of Romaji and Kana, defaults to pass through Kanji. /// </summary> /// <param name="input">Input.</param> /// <param name="passKanji">A value indicating whether the checker should pass through kanji.</param> /// <returns>A value indicating whether input is mixed.</returns> public static bool IsMixed(string input, bool passKanji = true) => MixedChecker.IsMixed(input, passKanji);