TCharHelper¶

type

  TCharHelper = type helper for UnicodeChar
  public
    const
      MaxHighSurrogate = UnicodeChar(HIGH_SURROGATE_END);
      MaxLowSurrogate = UnicodeChar(LOW_SURROGATE_END);
      MaxSurrogate = UnicodeChar(LOW_SURROGATE_END);
      MinHighSurrogate = UnicodeChar(HIGH_SURROGATE_BEGIN);
      MinLowSurrogate = UnicodeChar(LOW_SURROGATE_BEGIN);
      MinSurrogate = UnicodeChar(HIGH_SURROGATE_BEGIN);
    class function MaxCodePoint : Integer;
    class function UnicodeDataVersion : UnicodeString;
    class function ConvertFromUtf32 : UnicodeString;
    class function ConvertToUtf32(const S: UnicodeString; Index: Integer)
                              : UCS4Char; overload;
    class function ConvertToUtf32(const S: UnicodeString; Index: Integer; 
                             out CharLength: Integer) : UCS4Char; overload;
    class function ConvertToUtf32(const HighSurrogate: UnicodeChar; 
                             const LowSurrogate: UnicodeChar) : UCS4Char; overload;
    function GetNumericValue : Double; overload;
    class function GetNumericValue(const S: UnicodeString; Index: Integer)
                               : Double; overload;
    class function GetNumericValue(aChar: UCS4Char) : Double; overload;
    function GetUnicodeCategory : TUnicodeCategory; overload;
    class function GetUnicodeCategory(const S: UnicodeString; 
                                 Index: Integer) : TUnicodeCategory; overload;
    class function GetUnicodeCategory(aChar: UCS4Char) : TUnicodeCategory; overload;
    function IsControl : Boolean; overload;
    class function IsControl(const S: UnicodeString; Index: Integer)
                         : Boolean; overload;
    class function IsControl(aChar: UCS4Char) : Boolean; overload;
    function IsDefined : Boolean; overload;
    class function IsDefined(const S: UnicodeString; Index: Integer)
                         : Boolean; overload;
    class function IsDefined(aChar: UCS4Char) : Boolean; overload;
    function IsDigit : Boolean; overload;
    class function IsDigit(const S: UnicodeString; Index: Integer) : Boolean; overload;
    class function IsDigit(aChar: UCS4Char) : Boolean; overload;
    function IsHighSurrogate : Boolean; overload;
    class function IsHighSurrogate(const S: UnicodeString; Index: Integer)
                               : Boolean; overload;
    class function IsHighSurrogate(aChar: UCS4Char) : Boolean; overload;
    function IsInArray(const SomeChars: Array of UnicodeChar = WideChar)
                   : Boolean; overload;
    class function IsInArray(const S: UnicodeString; Index: Integer; 
                        const SomeChars: Array of UnicodeChar = WideChar)
                         : Boolean; overload;
    function IsLetter : Boolean; overload;
    class function IsLetter(const S: UnicodeString; Index: Integer)
                        : Boolean; overload;
    class function IsLetter(aChar: UCS4Char) : Boolean; overload;
    function IsLetterOrDigit : Boolean; overload;
    class function IsLetterOrDigit(const S: UnicodeString; Index: Integer)
                               : Boolean; overload;
    class function IsLetterOrDigit(aChar: UCS4Char) : Boolean; overload;
    function IsLower : Boolean; overload;
    class function IsLower(const S: UnicodeString; Index: Integer) : Boolean; overload;
    class function IsLower(aChar: UCS4Char) : Boolean; overload;
    function IsLowSurrogate : Boolean; overload;
    class function IsLowSurrogate(const S: UnicodeString; Index: Integer)
                              : Boolean; overload;
    class function IsLowSurrogate(aChar: UCS4Char) : Boolean; overload;
    function IsNumber : Boolean; overload;
    class function IsNumber(const S: UnicodeString; Index: Integer)
                        : Boolean; overload;
    class function IsNumber(aChar: UCS4Char) : Boolean; overload;
    function IsPunctuation : Boolean; overload;
    class function IsPunctuation(const S: UnicodeString; Index: Integer)
                             : Boolean; overload;
    class function IsPunctuation(aChar: UCS4Char) : Boolean; overload;
    function IsSeparator : Boolean; overload;
    class function IsSeparator(const S: UnicodeString; Index: Integer)
                           : Boolean; overload;
    class function IsSeparator(aChar: UCS4Char) : Boolean; overload;
    function IsSurrogate : Boolean; overload;
    class function IsSurrogate(const S: UnicodeString; Index: Integer)
                           : Boolean; overload;
    class function IsSurrogate(Surrogate: UCS4Char) : Boolean; overload;
    function IsSymbol : Boolean; overload;
    class function IsSymbol(const S: UnicodeString; Index: Integer)
                        : Boolean; overload;
    class function IsSymbol(aChar: UCS4Char) : Boolean; overload;
    function IsUpper : Boolean; overload;
    class function IsUpper(const S: UnicodeString; Index: Integer) : Boolean; overload;
    class function IsUpper(aChar: UCS4Char) : Boolean; overload;
    function IsWhiteSpace : Boolean; overload;
    class function IsWhiteSpace(const S: UnicodeString; Index: Integer)
                            : Boolean; overload;
    class function IsWhiteSpace(aChar: UCS4Char) : Boolean; overload;
    function ToLower : UnicodeChar; overload;
    class function ToLower(const S: UnicodeString) : UnicodeString; overload;
    class function ToLower(aChar: UCS4Char) : UCS4Char; overload;
    function ToUpper : UnicodeChar; overload;
    class function ToUpper(const S: UnicodeString) : UnicodeString; overload;
    class function ToUpper(aChar: UCS4Char) : UCS4Char; overload;
    function ToUCS4Char : UCS4Char;
    class function IsSurrogatePair(const HighSurrogate: UnicodeChar; 
                              const LowSurrogate: UnicodeChar) : Boolean; overload;
    class function IsSurrogatePair(const S: UnicodeString; Index: Integer)
                               : Boolean; overload;
  end;