Hi all,
I need to be able to handle both reading and writing files under i386 and PowerPC via my Mac OS X application.
I can create a Universal Binary, but none of my code is cross CPU ready yet.

1. What should I be aware of?

2. Should I use IFDEF ENDIAN to separate the i386 and PowerPC file system calls for reading and writing?

3. Is there an easy way to detect in my code, if the compiler is compiling for i386 of PowerPC?

Thanks,

Dominique.

Hi

The unit below, part of WST, implements a reader and a writer that always store and read their content in a big endian fashion. It mostly has no dependency and can be used alone.

https://lazarus-ccr.svn.sourceforge.net/svnroot/lazarus-ccr/wst/trunk/binary_streamer.pas

Best regards.

Hey that's great, I think this is exactly the sort of thing I'm looking for.

Only thing is that in my case since all the existing game files are little endian, so it looks like I'll need to reverse the code.

Thanks again,

Dominique.

https://lazarus-ccr.svn.sourceforge.net/svnroot/lazarus-ccr/wst/trunk/binary_streamer.pas

Here's how I'm doing it in one application. It's kinda messy I guess but works for me.

function  TLoader.Load_Binary(Name : String) : Boolean;
Var
	InFile : File of Cardinal;
	Ptr : Cardinal;
Begin
Assign(InFile, Name);
try
	Reset(InFile,4);
	BlockRead(InFile,PRam[0],8192,Ptr);
{$IFDEF ENDIAN_BIG}
		Inc(Ptr);
		While Ptr > 0 do
			Begin
			Dec(Ptr);
			PRam[Ptr] := SwapEndian(PRam[Ptr]);
			End;
{$ENDIF}
	Result := True;
except
	Result := False;
	Exit;
End;
End;