#------------------------------------------------------------------------------
# $File: adventure,v 1.19 2023/12/02 13:48:56 christos Exp $
# adventure: file(1) magic for Adventure game files
#
# from Allen Garvin <earendil@faeryland.tamu-commerce.edu>
# Edited by Dave Chapeskie <dchapes@ddm.on.ca> Jun 28, 1998
# Edited by Chris Chittleborough <cchittleborough@yahoo.com.au>, March 2002
#
# ALAN
# I assume there are other, lower versions, but these are the only ones I
# saw in the archive.
#
# FIXME: Conflicts with Microsoft x.out big-endian and PDP-11 binaries (./xenix)
0	beshort	0x0206	ALAN game data
>2	byte	<10	version 2.6%d


# Infocom (see z-machine)
#------------------------------------------------------------------------------
# Z-machine:  file(1) magic for Z-machine binaries.
# Sanity checks by David Griffith <dave@661.org>
# Updated by Adam Buchbinder <adam.buchbinder@gmail.com>
#
#http://www.gnelson.demon.co.uk/zspec/sect11.html
#https://www.jczorkmid.net/~jpenney/ZSpec11-latest.txt
#https://en.wikipedia.org/wiki/Z-machine
# The first byte is the Z-machine revision; it is always between 1 and 8. We
# had false matches (for instance, inbig5.ocp from the Omega TeX extension as
# well as an occasional MP3 file), so we sanity-check the version number.
#
# It might be possible to sanity-check the release number as well, as it seems
# (at least in classic Infocom games) to always be a relatively small number,
# always under 150 or so, but as this isn't rigorous, we'll wait on that until
# it becomes clear that it's needed.
#
0	ubyte			>0
>0	ubyte			<9
>>16	belong&0xfe00f0f0	0x3030
>>>0	ubyte			< 10
>>>>2	ubeshort		x
>>>>>18	regex			[0-9][0-9][0-9][0-9][0-9][0-9]
>>>>>>0	ubyte			< 10	Infocom (Z-machine %d
>>>>>>>2	ubeshort	x 	\b, Release %d
>>>>>>>>18	string		>\0	\b, Serial %.6s
>>>>>>>>18	string		x	\b)
!:strength + 40
!:mime	application/x-zmachine

#------------------------------------------------------------------------------
# Glulx:  file(1) magic for Glulx binaries.
#
# David Griffith <dave@661.org>
# I haven't checked for false matches yet.
#
0	string			Glul	Glulx game data
>4	beshort			x	(Version %d
>>6	byte			x	\b.%d
>>8	byte			x	\b.%d)
>36	string			Info	Compiled by Inform
!:mime	application/x-glulx


# For Quetzal and blorb magic see iff


# TADS (Text Adventure Development System) version 2
#  All files are machine-independent (games compile to byte-code) and are tagged
#  with a version string of the form "V2.<digit>.<digit>\0".
#  Game files start with "TADS2 bin\n\r\032\0" then the compiler version.
0	string	TADS2\ bin	TADS
>9	belong  !0x0A0D1A00	game data, CORRUPTED
>9	belong	 0x0A0D1A00
>>13	string	>\0		%s game data
!:mime	application/x-tads
#  Resource files start with "TADS2 rsc\n\r\032\0" then the compiler version.
0	string	TADS2\ rsc	TADS
>9	belong  !0x0A0D1A00	resource data, CORRUPTED
>9	belong	 0x0A0D1A00
>>13	string	>\0		%s resource data
!:mime	application/x-tads
#  Some saved game files start with "TADS2 save/g\n\r\032\0", a little-endian
#  2-byte length N, the N-char name of the game file *without* a NUL (darn!),
# "TADS2 save\n\r\032\0" and the interpreter version.
0	string	TADS2\ save/g	TADS
>12	belong	!0x0A0D1A00	saved game data, CORRUPTED
>12	belong	 0x0A0D1A00
>>(16.s+32) string >\0		%s saved game data
!:mime	application/x-tads
#  Other saved game files start with "TADS2 save\n\r\032\0" and the interpreter
#  version.
0	string	TADS2\ save	TADS
>10	belong	!0x0A0D1A00	saved game data, CORRUPTED
>10	belong	 0x0A0D1A00
>>14	string	>\0		%s saved game data
!:mime	application/x-tads

# TADS (Text Adventure Development System) version 3
#  Game files start with "T3-image\015\012\032"
0	string	T3-image\015\012\032
>11	leshort	x		TADS 3 game data (format version %d)
#  Saved game files start with "T3-state-v####\015\012\032"
#  where #### is a format version number
0	string	T3-state-v
>14	string	\015\012\032	TADS 3 saved game data (format version
>>10	byte	x		%c
>>11	byte	x		\b%c
>>12	byte	x		\b%c
>>13	byte	x		\b%c)
!:mime	application/x-t3vm-image

# edited by David Griffith <dave@661.org>
# Danny Milosavljevic <danny.milo@gmx.net>
# These are ADRIFT (adventure game standard) game files, extension .taf
# Checked from source at (http://www.adrift.co/) and various taf files
# found at the Interactive Fiction Archive (https://ifarchive.org/)
0	belong  0x3C423FC9
>4	belong  0x6A87C2CF	Adrift game file version
>>8	belong  0x94453661	3.80
>>8	belong  0x94453761	3.90
>>8	belong  0x93453E61	4.0
>>8	belong  0x92453E61	5.0
>>8	default x		unknown
!:mime	application/x-adrift