[comp.protocols.appletalk] Apple-Single vs Apple-Double

us267388@mmc.mmmg.com (Bradley D. Rhoades) (03/02/91)

	Can someone tell me the difference between files stored as
	Apple-Single verses Apple-Double format?  As far as I understand
	Apple-Double format stores the resource fork and data forks
	in separate files, Apple-Single stores the two forks in a single file.
	Is it possible to convert from Apple-Double to Apple-Single by
	concatenating the files together?  In which order?  How about going
	from Apple-Double to Apple-Single?

	Brad


-- 
Bradley D. Rhoades	          E/Mail: bdrhoades@mmc.mmmg.com
3M, 2465 Lexington Ave So         NIC: BR79
Building 60-1N-01                 WRK: +1 (612) 736 2874
Mendota Heights, MN  55120        FAX: +1 (612) 736-0431

jensen@mscf.upenn.edu (Christopher Jensen) (03/02/91)

In article <1991Mar1.182333.1786@mmc.mmmg.com> us267388@mmc.mmmg.com 
(Bradley D. Rhoades) writes:
> Is it possible to convert from Apple-Double to Apple-Single by
>         concatenating the files together?  In which order?  How about 
> going from Apple-Double to Apple-Single?

Yes, it is possible to covert from AS to AD and vice versa. I have used a 
utility from StarNine Technologies to do this. 
AppleSingle and AppleDouble formats are defined in the
document "Formats for Apple files in foreign file systems" which is 
published by Apple.

Christopher Jensen

University of Pennsylvania
Medical Information Systems
Philadelphia, Pennsylvania, USA