SWG
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== Format details == | == Format details == | ||
| − | New SWG format is | + | New SWG format is a derivative of [[LHA]] format, apparently based on LHA header level 0, with an extra 165 bytes worth of headers preceding the filename field. It has a custom "<code>-sw1-</code>" compression method, the details of which are apparently undocumented. |
== Identification == | == Identification == | ||
| − | New format | + | New format: At offset 2 is ASCII "{{magic|-sw1-}}" (if the first member file was compressible), or "{{magic|-sw0-}}" (if not). |
At least some old format files start with "{{magic|SWAGOLX.EXE}}". | At least some old format files start with "{{magic|SWAGOLX.EXE}}". | ||
| + | |||
| + | == Specifications == | ||
| + | * [http://files.mpoli.fi/software/PROGRAMM/GENERAL/SWAG.ZIP SWAG.ZIP] → SWAGADD.DOC - Has partial documentation of new format. | ||
| + | ** [https://hwiegman.home.xs4all.nl/fileformats/swg/swg.txt swg.txt] - Excerpt from SWAGADD.DOC | ||
== Software == | == Software == | ||
| − | * [http://files.mpoli.fi/software/PROGRAMM/GENERAL/] → | + | * [http://files.mpoli.fi/software/PROGRAMM/GENERAL/] → SWAG.ZIP - GDSOFT SWAG Packet Reader v3.13 (DOS software) |
| − | ** Note that the Reader is also included in the | + | ** Note that the Reader is also included in the ALLSWAGS.ZIP file. |
| − | * [http://files.mpoli.fi/software/PROGRAMM/GENERAL/] → | + | * [http://files.mpoli.fi/software/PROGRAMM/GENERAL/] → SWAGWIN.ZIP - SWAG for WINDOWS, v1.04 |
* {{CdTextfiles|monstmedia/PROG/PASCAL/SWAG.ZIP|SWAG.ZIP}} - Maybe the first version (DOS software) | * {{CdTextfiles|monstmedia/PROG/PASCAL/SWAG.ZIP|SWAG.ZIP}} - Maybe the first version (DOS software) | ||
== Sample files == | == Sample files == | ||
* [https://archive.org/details/2012.11.24.ftp-garbo-mirror GARBO Shareware Archive] → allswags.zip | * [https://archive.org/details/2012.11.24.ftp-garbo-mirror GARBO Shareware Archive] → allswags.zip | ||
| − | * [http://files.mpoli.fi/software/PROGRAMM/PASCAL/] → | + | * [http://files.mpoli.fi/software/PROGRAMM/PASCAL/] → ALLSWAGS.ZIP |
* {{CdTextfiles|monstmedia/PROG/PASCAL/SWAGABC.ZIP|SWAGABC.ZIP}} - Old format | * {{CdTextfiles|monstmedia/PROG/PASCAL/SWAGABC.ZIP|SWAGABC.ZIP}} - Old format | ||
| + | * https://telparia.com/fileFormatSamples/archive/swagPacket/ | ||
== Links == | == Links == | ||
Revision as of 22:51, 16 September 2021
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 a derivative of LHA format, apparently based on LHA header level 0, with an extra 165 bytes worth of headers preceding the filename field. It has a custom "-sw1-" compression method, the details of which are apparently undocumented.
Identification
New format: At offset 2 is ASCII "-sw1-" (if the first member file was compressible), or "-sw0-" (if not).
At least some old format files start with "SWAGOLX.EXE".
Specifications
- SWAG.ZIP → SWAGADD.DOC - Has partial documentation of new format.
- swg.txt - Excerpt from SWAGADD.DOC
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
- https://telparia.com/fileFormatSamples/archive/swagPacket/
Links
- The HTML SWAG Home Page - The contents of SWAG are available here, but maybe not in SWG format.
