SWG

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File Format
Name SWG
Ontology
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".

Contents

Format details

New SWG format is based on generalized LHA format. It is approximately parseable 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

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