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- #------------------------------------------------------------------------------
- # $File: lif,v 1.11 2022/10/19 20:15:16 christos Exp $
- # lif: file(1) magic for lif
- #
- # (Daniel Quinlan <quinlan@yggdrasil.com>)
- #
- # Modified by: Joerg Jenderek
- # URL: https://www.hp9845.net/9845/projects/hpdir/
- # https://github.com/bug400/lifutils
- # Reference: https://www.hp9845.net/9845/downloads/manuals/LIF_excerpt_64941-90906_flpRef_Jan84.pdf
- # Note: called by TrID "HP Logical Interchange Format disk image"
- 0 beshort 0x8000
- # GRR: line above is too general as it catches also compressed DEGAS low-res bitmap *.pc1
- # skip many compressed DEGAS low-res bitmap *.pc1 by test for unused bytes
- >14 beshort =0
- # skip MUNCHIE.PC1 BOARD.PC1 ENEMIES.PC1 by test for low version number
- >>20 ubeshort <0x0100
- # skip DROID fmt-840-signature-id-1195.adx fmt-840-signature-id-1199.adx by test for ASCII like volume name
- >>>2 ubelong >0x2020201F
- >>>>0 use lif-file
- 0 name lif-file
- # LIF ID
- >0 beshort x lif file
- !:mime application/x-lif-disk
- # lif used by Tony Duell LIF utilities; enhanced version by Joachim Siebold use also dat; hpi used by hpdir
- !:ext lif/hpi/dat
- # volume label; A-Z 0-9 _ ; default are 6 spaces
- >2 string x "%.6s"
- #>2 ubelong x LABEL=%8.8x
- # version number; 0 for systems without extensions or 1 for model 64000
- >20 ubeshort x \b, version %u
- # LIF identifier; 010000 for system 3000
- >12 beshort !0x1000 \b, LIF identifier %#x
- # directory start address in units like: 2
- >8 ubelong x \b, directory
- >8 ubelong !2 start address %u
- # length of directory like: 2 4 7 10 12 14 (for model 64000) 16 18 20 24 30 50 57 77 80
- >16 ubelong x length %u
- # level 1 extensions
- >20 beshort =0
- >>24 ubequad !0 \b, for extensions %#llx...
- >20 beshort >0
- >>24 ubequad !0 \b, extensions %#llx...
- # word 21-126 reserved for extensions and future use; set to nil
- >42 ubequad !0 \b, RESERVED %#llx
- # lif first file name for standard directory; 0xffff... means uninitialized
- >8 ubelong 2
- >>512 string <\xff\xff \b, 1st file %-.10s
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