unit Unit1;
{$mode objfpc}{$H+}
interface
uses
SysUtils, Forms, StdCtrls, ExtCtrls, Classes;
type
TTextToHex_HexToBin = class(TForm)
Button1: TButton;
Edit1: TEdit;
Edit2: TEdit;
CheckTime: TImage;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
procedure CheckTimeClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
end;
var
TextToHex_HexToBin: TTextToHex_HexToBin;
implementation
{$R *.lfm}
function HextoBinary(const AHexStr: string):string;
var
i, j: Integer;
const
HexParts: array[0..$F] of string =
(
'0000', '0001', '0010', '0011', '0100', '0101', '0110', '0111',
'1000', '1001', '1010', '1011', '1100', '1101', '1110', '1111'
);
begin
SetLength(Result, 4 * AHexStr.Length);
j := 1;
for i := 1 to AHexStr.Length do
begin
case AHexStr[i] of
'0'..'9':
Move(HexParts[Ord(AHexStr[i]) - Ord('0')][1], Result[j], sizeof(char) * 4);
'A'..'F':
Move(HexParts[$A + Ord(AHexStr[i]) - Ord('A')][1], Result[j], sizeof(char) * 4);
'a'..'f':
Move(HexParts[$A + Ord(AHexStr[i]) - Ord('a')][1], Result[j], sizeof(char) * 4);
else
raise EConvertError.CreateFmt('Invalid hexadecimal string "%s".', [AHexStr]);
end;
Inc(j, 4);
end;
end;
procedure TTextToHex_HexToBin.Button1Click(Sender: TObject);
var
TB: TBytes;
WS: WideString;
S: string;
i: Integer;
begin
WS := Trim(Edit1.Caption);
TB := WideBytesOf(WS);
S := '';
for i := Low(TB) to High(TB) do
S := S + IntToHex(TB[i], -1);
Edit2.Caption :=Trim(S);
Memo1.Caption:= HextoBinary(Trim(S));
end;
procedure TTextToHex_HexToBin.CheckTimeClick(Sender: TObject);
begin
end;
procedure TTextToHex_HexToBin.FormCreate(Sender: TObject);
begin
end;
end.
[以下是结果展示]