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سورس کد اینکود و دیکود url (دلفی) - نسخه قابل چاپ

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+--- انجمن: Pascal/Delphi (http://parsicoders.com/forumdisplay.php?fid=45)
+---- انجمن: Delphi (http://parsicoders.com/forumdisplay.php?fid=69)
+---- موضوع: سورس کد اینکود و دیکود url (دلفی) (/showthread.php?tid=2159)



سورس کد اینکود و دیکود url (دلفی) - Amin_Mansouri - 04-22-2012

با سورس زیر url یا ادرس همان سایت مورد نظر خودمون رو اینکود و یا دیکد کنیم.

تابع اینکود :

کد:
function URLEncode(const S: string; const InQueryString: Boolean): string;
var
  Idx: Integer; // loops thru characters in string
begin
  Result := '';
  for Idx := 1 to Length(S) do
  begin
    case S[Idx] of
      'A'..'Z', 'a'..'z', '0'..'9', '-', '_', '.':
        Result := Result + S[Idx];
      ' ':
        if InQueryString then
          Result := Result + '+'
        else
          Result := Result + ' ';
      else
        Result := Result + '%' + SysUtils.IntToHex(Ord(S[Idx]), 2);
    end;
  end;
end;

تابع دیکود :

کد:
function URLDecode(const S: string): string;
var
  Idx: Integer;   // loops thru chars in string
  Hex: string;    // string of hex characters
  Code: Integer;  // hex character code (-1 on error)
begin
  // Intialise result and string index
  Result := '';
  Idx := 1;
  // Loop thru string decoding each character
  while Idx <= Length(S) do
  begin
    case S[Idx] of
      '%':
      begin
        // % should be followed by two hex digits - exception otherwise
        if Idx <= Length(S) - 2 then
        begin
          // there are sufficient digits - try to decode hex digits
          Hex := S[Idx+1] + S[Idx+2];
          Code := SysUtils.StrToIntDef('$' + Hex, -1);
          Inc(Idx, 2);
        end
        else
          // insufficient digits - error
          Code := -1;
        // check for error and raise exception if found
        if Code = -1 then
          raise SysUtils.EConvertError.Create(
            'Invalid hex digit in URL'
          );
        // decoded OK - add character to result
        Result := Result + Chr(Code);
      end;
      '+':
        // + is decoded as a space
        Result := Result + ' '
      else
        // All other characters pass thru unchanged
        Result := Result + S[Idx];
    end;
    Inc(Idx);
  end;
end;