public static string HiraganaToKatakana(string input)
{
if (input is null)
{
throw new ArgumentNullException(nameof(input));
}
var builder = new StringBuilder();
foreach (var character in input)
{
// Short circuit to avoid incorrect codeshift for 'ー' and '・'
if (SpecialCharacterChecker.IsLongDash(character) || SpecialCharacterChecker.IsSlashDot(character))
{
builder.Append(character);
}
else if (HiraganaChecker.IsHiragana(character))
{
// Shift charcode.
var katakanaCode = (character - CharacterRanges.HiraganaStart) + CharacterRanges.KatakanaStart;
var katakanaCharacter = (char)katakanaCode;
builder.Append(katakanaCharacter);
}
else
{
// Pass non-hiragana chars through
builder.Append(character);
}
}
return(builder.ToString());
}
/// <summary> /// Test if input is hiragana. /// </summary> /// <param name="input">Input.</param> /// <returns>A value indicating whether input is hiragana.</returns> public static bool IsHiragana(string input) => HiraganaChecker.IsHiragana(input);
private static string GetTokenType(char character, bool compact = false)
{
if (compact)
{
if (IsJaNumber(character))
{
return(TokenTypes.Other);
}
if (IsEnNumber(character))
{
return(TokenTypes.Other);
}
if (IsEnSpace(character))
{
return(TokenTypes.English);
}
if (SpecialCharacterChecker.IsEnglishPunctuation(character))
{
return(TokenTypes.Other);
}
if (IsJaSpace(character))
{
return(TokenTypes.Japanese);
}
if (SpecialCharacterChecker.IsJapanesePunctuation(character))
{
return(TokenTypes.Other);
}
if (JapaneseChecker.IsJapanese(character))
{
return(TokenTypes.Japanese);
}
if (RomajiChecker.IsRomaji(character))
{
return(TokenTypes.English);
}
}
else
{
if (IsJaSpace(character))
{
return(TokenTypes.Space);
}
if (IsEnSpace(character))
{
return(TokenTypes.Space);
}
if (IsJaNumber(character))
{
return(TokenTypes.JapaneseNumber);
}
if (IsEnNumber(character))
{
return(TokenTypes.EnglishNumber);
}
if (SpecialCharacterChecker.IsEnglishPunctuation(character))
{
return(TokenTypes.EnglishPunctuation);
}
if (SpecialCharacterChecker.IsJapanesePunctuation(character))
{
return(TokenTypes.JapanesePunctuation);
}
if (KanjiChecker.IsKanji(character))
{
return(TokenTypes.Kanji);
}
if (HiraganaChecker.IsHiragana(character))
{
return(TokenTypes.Hiragana);
}
if (KatakanaChecker.IsKatakana(character))
{
return(TokenTypes.Katakana);
}
if (JapaneseChecker.IsJapanese(character))
{
return(TokenTypes.Japanese);
}
if (RomajiChecker.IsRomaji(character))
{
return(TokenTypes.English);
}
}
return(TokenTypes.Other);
}
/// <summary> /// Test if input is hiragana. /// </summary> /// <param name="input">Input.</param> /// <returns>A value indicating whether input is hiragana.</returns> public static bool IsHiragana(char input) => HiraganaChecker.IsHiragana(input);
