SWG

File Format
Name	SWG
Ontology	Electronic File Formats Archiving SWG
Extension(s)	.swg
Released	1993?

SWG (SWAG packet) is a specialized archive format associated with the SourceWare Archival Group (SWAG). SWAG is a historical collection of Pascal source code.

There are at least two different SWG formats, which we'll call "old" and "new".

Format details

New SWG format is based on generalized LHA format. It is approximately parsable as LHA, but the fields starting with the filename field seem to be repurposed, and it has a custom "compression scheme".

Identification

New format files have ASCII "-sw1-" at offset 2.

At least some old format files start with "SWAGOLX.EXE".

Software

• [1] → swag.zip - GDSOFT SWAG Packet Reader v3.13 (DOS software)
  • Note that the Reader is also included in the allswags.zip file.
• [2] → swagwin.zip - SWAG for WINDOWS, v1.04
• SWAG.ZIP - Maybe the first version (DOS software)

Sample files

• GARBO Shareware Archive → allswags.zip
• [3] → allswags.zip
• SWAGABC.ZIP - Old format

Links

• The HTML SWAG Home Page - The contents of SWAG are available here, but maybe not in SWG format.