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Delphi source code for Internet/Lan >> Encode a HTTP URL

Category: Internet/Lan
Title: Encode a HTTP URL
Date added: 15.03.2006
Hits: 24583

function HTTPEncode(const AStr: string): string;
  NoConversion = ['A'..'Z', 'a'..'z', '*', '@', '.', '_', '-'];
  Sp, Rp: PChar;
  SetLength(Result, Length(AStr) * 3);
  Sp := PChar(AStr);
  Rp := PChar(Result);
  while Sp^ <> #0 do
    if Sp^ in NoConversion then
      Rp^ := Sp^
    else if Sp^ = ' ' then
      Rp^ := '+'
      FormatBuf(Rp^, 3, '%%%.2x', 6, [Ord(Sp^)]);
      Inc(Rp, 2);
  SetLength(Result, Rp - PChar(Result));

procedure TForm1.Button1Click(Sender: TObject);
  Edit1.Text := HTTPEncode(Edit1.Text);

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