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Delphi source code for Strings >> Extract words out of a string


Category: Strings
Title: Extract words out of a string
Date added: 15.03.2006
Hits: 17759



function GetToken(aString, SepChar: string; TokenNum: Byte): string;
var
  Token: string;
  StrLen: Integer;
  Num: Integer;
  EndofToken: Integer;
begin
  StrLen := Length(aString);
  Num := 1;
  EndofToken := StrLen;
  while ((Num <= TokenNum) and (EndofToken <> 0)) do
  begin
    EndofToken := Pos(SepChar, aString);
    if EndofToken <> 0 then
    begin
      Token := Copy(aString, 1, EndofToken - 1);
      Delete(aString, 1, EndofToken);
      Inc(Num);
    end
    else
      Token := aString;
  end;
  if Num >= TokenNum then
    Result := Token
  else
    Result := '';
end;
GetToken('Word1 Word2 Word3', 2, ' ') = 'Word2'
GetToken('Word1/Word2/Word3', 2, '/') = 'Word2'

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