Inno Setup 5.5.1 limitation

[JRD!]

Hi dudes,

I have a little problem, I want to get the weight of greater than +2Gb file with Inno Setup 5.5.1 ee2, I try many things without success, can someone help me ?

Many thanks!

Example:

#define FileSize "D:\Game\Grand Theft Auto V\x64q.rpf"

[Setup]
AppName=My Application
AppVersion=1.5
DefaultDirName={pf}\My Application

[_Code]
const
    // Some constants for CreateFile ().
    GENERIC_READ           = $80000000;
    GENERIC_WRITE          = $40000000;
    GENERIC_EXECUTE        = $20000000;
    GENERIC_ALL            = $10000000;
    FILE_SHARE_READ        = 1;
    FILE_SHARE_WRITE       = 2;
    FILE_SHARE_DELETE      = 4;
    CREATE_NEW             = 1;
    CREATE_ALWAYS          = 2;
    OPEN_EXISTING          = 3;
    OPEN_ALWAYS            = 4;
    TRUNCATE_EXISTING      = 5;
    FILE_READ_ATTRIBUTES   = $80;
    FILE_WRITE_ATTRIBUTES  = $100;

    // General Win32.
    INVALID_HANDLE_VALUE   = -1;

function CloseHandle (hHandle: THandle): Boolean;
  external '[email protected] stdcall';

function CreateFile (
    lpFileName             : String;
    dwDesiredAccess        : Cardinal;
    dwShareMode            : Cardinal;
    lpSecurityAttributes   : Cardinal;
    dwCreationDisposition  : Cardinal;
    dwFlagsAndAttributes   : Cardinal;
    hTemplateFile          : Integer
): Integer;
 external '[email protected] stdcall';

function GetFileSize (hFile: THandle; var lpFileSizeHigh: Integer): Integer;
  external '[email protected] stdcall';

function GetTheFileSize (FileName: String): Integer;
var
    hFile:  THandle;
    iSize:  Integer;
    hSize:  Integer;
begin
    hFile := CreateFile (FileName,
        GENERIC_READ,// Desired access.
        FILE_SHARE_READ + FILE_SHARE_WRITE,
        0,                // Security attributes.
        OPEN_EXISTING,
        FILE_ATTRIBUTE_TEMPORARY,
        0);
    if (INVALID_HANDLE_VALUE = hFile) then
    begin
        Result := 0;
        Exit;
    end;
    iSize := GetFileSize (hFile, hSize);
    CloseHandle (hFile);
    Result := iSize;
end;

function InitializeSetup():Boolean;
var
  FileSize: integer;
begin
  FileSize := GetTheFileSize(ExpandConstant('{#FileSize}'));
  MsgBox(IntToStr(FileSize), mbInformation, mb_OK);
  Result := False;
end;

[JRD!]

This example return INVALID_HANDLE_VALUE, how to fix it?

THANKS!

[JRD!]

This fix it but return negative value

#ifdef UNICODE
external '[email protected] stdcall';
#else
external '[email protected] stdcall';
#endif

[JRD!]

Solved, close this post!

Thanks moderator

[lolaya]

lol

[julenza]

you have to write DiskSpanning = yes before setup and the problem will be solved.

Hi Giuseppe.

Originally Posted by JRD!

Hi dudes,

I have a little problem, I want to get the weight of greater than +2Gb file with Inno Setup 5.5.1 ee2, I try many things without success, can someone help me ?

Many thanks!

Example:

#define FileSize "D:\Game\Grand Theft Auto V\x64q.rpf"

[Setup]
AppName=My Application
AppVersion=1.5
DefaultDirName={pf}\My Application

[_Code]
const
    // Some constants for CreateFile ().
    GENERIC_READ           = $80000000;
    GENERIC_WRITE          = $40000000;
    GENERIC_EXECUTE        = $20000000;
    GENERIC_ALL            = $10000000;
    FILE_SHARE_READ        = 1;
    FILE_SHARE_WRITE       = 2;
    FILE_SHARE_DELETE      = 4;
    CREATE_NEW             = 1;
    CREATE_ALWAYS          = 2;
    OPEN_EXISTING          = 3;
    OPEN_ALWAYS            = 4;
    TRUNCATE_EXISTING      = 5;
    FILE_READ_ATTRIBUTES   = $80;
    FILE_WRITE_ATTRIBUTES  = $100;

    // General Win32.
    INVALID_HANDLE_VALUE   = -1;

function CloseHandle (hHandle: THandle): Boolean;
  external '[email protected] stdcall';

function CreateFile (
    lpFileName             : String;
    dwDesiredAccess        : Cardinal;
    dwShareMode            : Cardinal;
    lpSecurityAttributes   : Cardinal;
    dwCreationDisposition  : Cardinal;
    dwFlagsAndAttributes   : Cardinal;
    hTemplateFile          : Integer
): Integer;
 external '[email protected] stdcall';

function GetFileSize (hFile: THandle; var lpFileSizeHigh: Integer): Integer;
  external '[email protected] stdcall';

function GetTheFileSize (FileName: String): Integer;
var
    hFile:  THandle;
    iSize:  Integer;
    hSize:  Integer;
begin
    hFile := CreateFile (FileName,
        GENERIC_READ,// Desired access.
        FILE_SHARE_READ + FILE_SHARE_WRITE,
        0,                // Security attributes.
        OPEN_EXISTING,
        FILE_ATTRIBUTE_TEMPORARY,
        0);
    if (INVALID_HANDLE_VALUE = hFile) then
    begin
        Result := 0;
        Exit;
    end;
    iSize := GetFileSize (hFile, hSize);
    CloseHandle (hFile);
    Result := iSize;
end;

function InitializeSetup():Boolean;
var
  FileSize: integer;
begin
  FileSize := GetTheFileSize(ExpandConstant('{#FileSize}'));
  MsgBox(IntToStr(FileSize), mbInformation, mb_OK);
  Result := False;
end;

[JRD!]

Originally Posted by julenza

you have to write DiskSpanning = yes before setup and the problem will be solved.

Hi Giuseppe.

Thank you but it has nothing to do with diskspanning, this is because inno setup 5.5.1 does not integrate the type of variable Int64, so limited to the max value of an integer (2 ^ 32) -1 bytes.
The problem is getting around by reviewing the result in megabytes.

[Siber Pro]

Why You Do Not Making Like This?

[Cesar82]

Test this code.
If you need to make a calculation with the value, convert back to an extended type variable using the StrToFloat function.

#define FileSize "D:\Game\Grand Theft Auto V\x64q.rpf"

[Setup]
AppName=My Application
AppVersion=1.5
DefaultDirName={pf}\My Application

[ code]
const
  KFactor = $400; {1024}

function FormatBytes(const Bytes: Extended): String;
var
  Dms: Array of String;
  Amount: Extended;
  Idx: Byte;
begin
  Dms := ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
  Amount := Bytes;
  Idx := 0;
  while Amount > (0.9 * KFactor) do
  begin
    Inc(Idx)
    Amount := Amount / KFactor;
  end;
  if Abs(Amount - Trunc(Amount)) < 0.007 {0.07} then
    Result := Format('%.0f %s', [Amount, Dms[Idx]])
  else
    Result := Format('%.2f %s', [Amount, Dms[Idx]]);
end;

function Size64(Hi, Lo: Longint): Extended;
begin
  Result := Lo;
  if Lo < 0 then
    Result := Result + $7FFFFFFF + $7FFFFFFF + 2;
  for Hi := (Hi - 1) downto 0 do
    Result := Result + $7FFFFFFF + $7FFFFFFF + 2;
end;

function GetFileSize(const FileName: String): Extended;
var
  FindRec: TFindRec;
begin
  Result := 0;
  if FindFirst(FileName, FindRec) then
  begin
    try
      if FindRec.Attributes and FILE_ATTRIBUTE_DIRECTORY = 0 then
        Result := Size64(FindRec.SizeHigh, FindRec.SizeLow);
    finally
      FindClose(FindRec);
    end;
  end;
end;

function FloatToByte(const Bytes: Extended): String;
begin
  Result := Format('%.0f', [Bytes])
end;

function InitializeSetup(): Boolean;
var
  FileSize: Extended;
begin
  FileSize := GetFileSize(ExpandConstant('{#FileSize}'));

  MsgBox(FormatBytes(FileSize), mbInformation, mb_OK);
  {or use}
  MsgBox(FloatToByte(FileSize), mbInformation, mb_OK);

  Result := False;
end;

[JRD!]

I had worked around the problem differently, well done for the "Size64" function, I would not have thought of this technique. 2 * (MaxInt +1), Thank you!