On Tue, 9 Apr 2013, Mattias Gaertner wrote:
On Tue, 09 Apr 2013 08:24:11 +0200
Michael Schnell <mschn...@lumino.de> wrote:
On 04/08/2013 07:02 PM, Mattias Gaertner wrote:
I guess, you mean encoded string types.
AFAIK, you can just create string variables of the appropriate coding
type and an assignment will do auto-conversion.
Yes.
But how do you examine the characters?
If I understand Michael right, there will be some "implicit functions"
for that. I wonder how they work.
See the character unit:
// flat functions
function ConvertFromUtf32(AChar : UCS4Char) : UnicodeString;
function ConvertToUtf32(const AString : UnicodeString; AIndex : Integer) :
UCS4Char; overload;
function ConvertToUtf32(const AString : UnicodeString; AIndex : Integer; out
ACharLength : Integer) : UCS4Char; overload;
function ConvertToUtf32(const AHighSurrogate, ALowSurrogate : UnicodeChar) :
UCS4Char; overload;
function GetNumericValue(AChar : UnicodeChar) : Double; overload;
function GetNumericValue(const AString : UnicodeString; AIndex : Integer) :
Double; overload;
function GetUnicodeCategory(AChar : UnicodeChar) : TUnicodeCategory; overload;
function GetUnicodeCategory(const AString : UnicodeString; AIndex : Integer)
: TUnicodeCategory; overload;
function IsControl(AChar : UnicodeChar) : Boolean; overload;
function IsControl(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsDigit(AChar : UnicodeChar) : Boolean; overload;
function IsDigit(const AString : UnicodeString; AIndex : Integer) : Boolean;
overload;
function IsSurrogate(AChar : UnicodeChar) : Boolean; overload;
function IsSurrogate(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsHighSurrogate(AChar : UnicodeChar) : Boolean; overload;
function IsHighSurrogate(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsLowSurrogate(AChar : UnicodeChar) : Boolean; overload;
function IsLowSurrogate(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsSurrogatePair(const AHighSurrogate, ALowSurrogate : UnicodeChar) :
Boolean; overload;
function IsSurrogatePair(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsLetter(AChar : UnicodeChar) : Boolean; overload;
function IsLetter(const AString : UnicodeString; AIndex : Integer) : Boolean;
overload;
function IsLetterOrDigit(AChar : UnicodeChar) : Boolean; overload;
function IsLetterOrDigit(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsLower(AChar : UnicodeChar) : Boolean; overload;
function IsLower(const AString : UnicodeString; AIndex : Integer) : Boolean;
overload;
function IsNumber(AChar : UnicodeChar) : Boolean; overload;
function IsNumber(const AString : UnicodeString; AIndex : Integer) : Boolean;
overload;
function IsPunctuation(AChar : UnicodeChar) : Boolean; overload;
function IsPunctuation(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsSeparator(AChar : UnicodeChar) : Boolean; overload;
function IsSeparator(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function IsSymbol(AChar : UnicodeChar) : Boolean; overload;
function IsSymbol(const AString : UnicodeString; AIndex : Integer) : Boolean;
overload;
function IsUpper(AChar : UnicodeChar) : Boolean; overload;
function IsUpper(const AString : UnicodeString; AIndex : Integer) : Boolean;
overload;
function IsWhiteSpace(AChar : UnicodeChar) : Boolean; overload;
function IsWhiteSpace(const AString : UnicodeString; AIndex : Integer) :
Boolean; overload;
function ToLower(AChar : UnicodeChar) : UnicodeChar; overload;
function ToLower(const AString : UnicodeString) : UnicodeString; overload;
function ToUpper(AChar : UnicodeChar) : UnicodeChar; overload;
function ToUpper(const AString : UnicodeString) : UnicodeString; overload;
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