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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
+