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| procedure Join (Main_FileName, Hidden_Filename : string); var MainFile : TFileStream; HiddenFile : TFileStream; SizeOfFile : Cardinal; SearchWord : string[10]; begin MainFile := TFileStream.Create(Main_FileName, fmOpenReadWrite or fmShareDenyWrite); try SizeOfFile := MainFile.Size; HiddenFile := TFileStream.Create(Hidden_Filename, fmOpenRead or fmShareDenyNone); try MainFile.Seek(0, soFromEnd); MainFile.CopyFrom(HiddenFile, 0); MainFile.Seek(0, soFromEnd); finally HiddenFile.Free; end; SearchWord := IntToStr(SizeOfFile) + #0; MainFile.Seek(0, soFromEnd); MainFile.WriteBuffer(SearchWord, SizeOf(SearchWord)); finally MainFile.Free; end; end;
procedure Split(Main_FileName, NewFromMain_Filename : string); var MainFile : TFileStream; SplitFile : TFileStream; HelpStr : string[10]; GetSize : integer; begin MainFile := TFileStream.create(Main_FileName, fmOpenReadWrite or fmShareDenyWrite); try SplitFile := TFileStream.Create(NewFromMain_Filename, fmCreate or fmShareDenyNone); try MainFile.Position := MainFile.Size - 11; MainFile.Read(HelpStr, 10); GetSize := StrToInt(HelpStr); MainFile.Position := GetSize; SplitFile.CopyFrom(MainFile, MainFile.Size-GetSize); SplitFile.Size := SplitFile.Size - 11; MainFile.Size := GetSize; finally SplitFile.Free; end; finally MainFile.Free; end; end;
function AttachToFile(const AFileName: string; MemoryStream: TMemoryStream): Boolean; var aStream: TFileStream; iSize: Integer; wert : string; begin Result := False; if not FileExists(AFileName) then Exit; try aStream := TFileStream.Create(AFileName, fmOpenWrite or fmShareDenyWrite); // Memo1.Lines.Add(#01#02#99); MemoryStream.Seek(0, soFromBeginning); // seek to end of File // ans Ende der Datei Seeken aStream.Seek(0, soFromEnd); // copy data from MemoryStream // Daten vom MemoryStream kopieren aStream.CopyFrom(MemoryStream, 0); // save Stream-Size // die Streamgröße speichern wert := '#01#02#99'; iSize := MemoryStream.Size + SizeOf(Integer); aStream.Write(iSize, SizeOf(iSize)); // aStream.Write(iSize); finally aStream.Free; end; Result := True; end;
function LoadFromFile(const AFileName: string; MemoryStream: TMemoryStream): Boolean; var aStream: TFileStream; iSize: Integer; begin Result := False; if not FileExists(AFileName) then Exit; try aStream := TFileStream.Create(AFileName, fmOpenRead or fmShareDenyWrite); // seek to position where Stream-Size is saved // zur Position seeken wo Streamgröße gespeichert aStream.Seek(5, soFromEnd); // if (aStream = #99) then aStream.Seek(-SizeOf(Integer), soFromEnd);
aStream.Read(iSize, SizeOf(iSize)); if iSize > aStream.Size then begin aStream.Free; Exit; end; // seek to position where data is saved // zur Position seeken an der die Daten abgelegt sind aStream.Seek(-iSize, soFromEnd); MemoryStream.SetSize(iSize - SizeOf(Integer)); MemoryStream.CopyFrom(aStream, iSize - SizeOf(iSize)); MemoryStream.Seek(0, soFromBeginning); finally aStream.Free; end; Result := True; end;
procedure TForm1.Button1Click(Sender: TObject); var aStream: TMemoryStream; begin aStream := TMemoryStream.Create; Memo1.Lines.Add(#01#02#99); Memo1.Lines.SaveToStream(aStream); AttachToFile('Test.exe', aStream); aStream.Free; end;
procedure TForm1.Button2Click(Sender: TObject); var aStream: TMemoryStream; begin aStream := TMemoryStream.Create; LoadFromFile('Test.exe', aStream); // SaveFromStream('Test1.exe', aStream);
Memo1.Lines.LoadFromStream(aStream); aStream.Free; end;
procedure TForm1.Button3Click(Sender: TObject); begin Join('EB.exe', 'first.txt'); Join('EB.exe', 'sec.txt'); end;
procedure TForm1.Button4Click(Sender: TObject); begin Split(ParamStr(0), 'C:\sec.txt'); Split(ParamStr(0), 'c:\first.txt'); end; |