file/magic/Magdir/cad

#------------------------------------------------------------------------------
# $File: cad,v 1.19 2019/04/19 00:42:27 christos Exp $
# autocad:  file(1) magic for cad files
#

# Microstation DGN/CIT Files (www.bentley.com)
# Last updated July 29, 2005 by Lester Hightower
# DGN is the default file extension of Microstation/Intergraph CAD files.
# CIT is the proprietary raster format (similar to TIFF) used to attach
# raster underlays to Microstation DGN (vector) drawings.
#
# http://www.wotsit.org/search.asp
# https://filext.com/detaillist.php?extdetail=DGN
# https://filext.com/detaillist.php?extdetail=CIT
#
# https://www.bentley.com/products/default.cfm?objectid=97F351F5-9C35-4E5E-89C2
# 3F86C928&method=display&p_objectid=97F351F5-9C35-4E5E-89C280A93F86C928
# https://www.bentley.com/products/default.cfm?objectid=A5C2FD43-3AC9-4C71-B682
# 721C479F&method=display&p_objectid=A5C2FD43-3AC9-4C71-B682C7BE721C479F
0	string	\010\011\376			Microstation
>3	string	\002
>>30	string	\026\105			DGNFile
>>30	string	\034\105			DGNFile
>>30	string	\073\107			DGNFile
>>30	string	\073\110			DGNFile
>>30	string	\106\107			DGNFile
>>30	string	\110\103			DGNFile
>>30	string	\120\104			DGNFile
>>30	string	\172\104			DGNFile
>>30	string	\172\105			DGNFile
>>30	string	\172\106			DGNFile
>>30	string	\234\106			DGNFile
>>30	string	\273\105			DGNFile
>>30	string	\306\106			DGNFile
>>30	string	\310\104			DGNFile
>>30	string	\341\104			DGNFile
>>30	string	\372\103			DGNFile
>>30	string	\372\104			DGNFile
>>30	string	\372\106			DGNFile
>>30	string	\376\103			DGNFile
>4	string	\030\000\000			CITFile
>4	string	\030\000\003			CITFile

# AutoCAD
# Merge of the different contributions and updates from https://en.wikipedia.org/wiki/Dwg
# and https://www.iana.org/assignments/media-types/image/vnd.dwg
0	string	MC0.0	DWG AutoDesk AutoCAD Release 1.0
!:mime image/vnd.dwg
0	string	AC1.2	DWG AutoDesk AutoCAD Release 1.2
!:mime image/vnd.dwg
0	string	AC1.3	DWG AutoDesk AutoCAD Release 1.3
!:mime image/vnd.dwg
0	string	AC1.40	DWG AutoDesk AutoCAD Release 1.40
!:mime image/vnd.dwg
0	string	AC1.50	DWG AutoDesk AutoCAD Release 2.05
!:mime image/vnd.dwg
0	string	AC2.10	DWG AutoDesk AutoCAD Release 2.10
!:mime image/vnd.dwg
0	string	AC2.21	DWG AutoDesk AutoCAD Release 2.21
!:mime image/vnd.dwg
0	string	AC2.22	DWG AutoDesk AutoCAD Release 2.22
!:mime image/vnd.dwg
0	string	AC1001	DWG AutoDesk AutoCAD Release 2.22
!:mime image/vnd.dwg
0	string	AC1002	DWG AutoDesk AutoCAD Release 2.50
!:mime image/vnd.dwg
0	string	AC1003	DWG AutoDesk AutoCAD Release 2.60
!:mime image/vnd.dwg
0	string	AC1004	DWG AutoDesk AutoCAD Release 9
!:mime image/vnd.dwg
0	string	AC1006	DWG AutoDesk AutoCAD Release 10
!:mime image/vnd.dwg
0	string	AC1009	DWG AutoDesk AutoCAD Release 11/12
!:mime image/vnd.dwg
# AutoCAD DWG versions R13/R14 (www.autodesk.com)
# Written December 01, 2003 by Lester Hightower
# Based on the DWG File Format Specifications at http://www.opendwg.org/
# AutoCad, from Nahuel Greco
# AutoCAD DWG versions R12/R13/R14 (www.autodesk.com)
0	string	AC1012	DWG AutoDesk AutoCAD Release 13
!:mime image/vnd.dwg
0	string	AC1014	DWG AutoDesk AutoCAD Release 14
!:mime image/vnd.dwg
0	string	AC1015	DWG AutoDesk AutoCAD 2000/2002
!:mime image/vnd.dwg

# A new version of AutoCAD DWG
# Sergey Zaykov (mail_of_sergey@mail.ru, sergey_zaikov@rambler.ru,
# ICQ 358572321)
# From various sources like:
# https://autodesk.blogs.com/between_the_lines/autocad-release-history.html
0	string	AC1018	DWG AutoDesk AutoCAD 2004/2005/2006
!:mime image/vnd.dwg
0	string	AC1021	DWG AutoDesk AutoCAD 2007/2008/2009
!:mime image/vnd.dwg
0	string	AC1024	DWG AutoDesk AutoCAD 2010/2011/2012
!:mime image/vnd.dwg
0	string	AC1027	DWG AutoDesk AutoCAD 2013/2014
!:mime image/vnd.dwg

# KOMPAS 2D drawing from ASCON
# This is KOMPAS 2D drawing or fragment of drawing but is not detailed nor
# gathered nor specification
# ASCON https://ascon.net/main/ in English,
#	https://ascon.ru/ main site in Russian
# Extension is CDW for drawing and FRW for fragment of drawing
# Sergey Zaykov (mail_of_sergey@mail.ru, sergey_zaikov@rambler.ru,
# ICQ 358572321, https://vkontakte.ru/id16076543)
# From:
# https://sd.ascon.ru/otrs/customer.pl?Action=CustomerFAQ&CategoryID=4&ItemID=292
# (in russian) and my experiments
0	string	KF
>2	belong	0x4E00000C	Kompas drawing 12.0 SP1
>2	belong	0x4D00000C	Kompas drawing 12.0
>2	belong	0x3200000B	Kompas drawing 11.0 SP1
>2	belong	0x3100000B	Kompas drawing 11.0
>2	belong	0x2310000A	Kompas drawing 10.0 SP1
>2	belong	0x2110000A	Kompas drawing 10.0
>2	belong	0x08000009	Kompas drawing 9.0 SP1
>2	belong	0x05000009	Kompas drawing 9.0
>2	belong	0x33010008	Kompas drawing 8+
>2	belong	0x1A000008	Kompas drawing 8.0
>2	belong	0x2C010107	Kompas drawing 7+
>2	belong	0x05000007	Kompas drawing 7.0
>2	belong	0x32000006	Kompas drawing 6+
>2	belong	0x09000006	Kompas drawing 6.0
>2	belong	0x5C009005	Kompas drawing 5.11R03
>2	belong	0x54009005	Kompas drawing 5.11R02
>2	belong	0x51009005	Kompas drawing 5.11R01
>2	belong	0x22009005	Kompas drawing 5.10R03
>2	belong	0x22009005	Kompas drawing 5.10R02 mar
>2	belong	0x21009005	Kompas drawing 5.10R02 febr
>2	belong	0x19009005	Kompas drawing 5.10R01
>2	belong	0xF4008005	Kompas drawing 5.9R01.003
>2	belong	0x1C008005	Kompas drawing 5.9R01.002
>2	belong	0x11008005	Kompas drawing 5.8R01.003

# CAD: file(1) magic for computer aided design files
# Phillip Griffith <phillip dot griffith at gmail dot com>
# AutoCAD magic taken from the Open Design Alliance's OpenDWG specifications.
#
0	belong	0x08051700	Bentley/Intergraph MicroStation DGN cell library
0	belong	0x0809fe02	Bentley/Intergraph MicroStation DGN vector CAD
0	belong	0xc809fe02	Bentley/Intergraph MicroStation DGN vector CAD
0	beshort	0x0809		Bentley/Intergraph MicroStation
>0x02	byte	0xfe
>>0x04	beshort	0x1800		CIT raster CAD

# 3DS (3d Studio files)
0	leshort		0x4d4d
>6	leshort		0x2
>>8	lelong		0xa
>>>16	leshort		0x3d3d	3D Studio model
!:mime	image/x-3ds
!:ext 3ds

# MegaCAD 2D/3D drawing (.prt)
# https://megacad.de/
# From: Markus Heidelberg <markus.heidelberg@web.de>
0	string	MegaCad23\0	MegaCAD 2D/3D drawing

# Hoops CAD files
# https://docs.techsoft3d.com/visualize/3df/latest/build/general/hsf/\
# HSF_architecture.html
# Stephane Charette <stephane.charette@gmail.com>
0	string	;;\020HSF\020V		OpenHSF (Hoops Stream Format)
>7	regex/9 V[.0-9]{4,5}\020	%s
!:ext hsf

# AutoCAD Drawing Exchange Format
0	regex		\^[\ \t]*0\r?\000$
>1	regex		\^[\ \t]*SECTION\r?$
>>2	regex		\^[\ \t]*2\r?$
>>>3	regex		\^[\ \t]*HEADER\r?$	AutoCAD Drawing Exchange Format
!:mime	application/x-dxf
!:ext	dxf
>>>>&1	search/8192	AC1006			\b, R10
>>>>&1	search/8192	AC1009			\b, R11/R12
>>>>&1	search/8192	AC1012			\b, R13
>>>>&1	search/8192	AC1014			\b, R14
>>>>&1	search/8192	AC1015			\b, version 2000
>>>>&1	search/8192	AC1018			\b, version 2004
>>>>&1	search/8192	AC1021			\b, version 2007
>>>>&1	search/8192	AC1024			\b, version 2010

# The Sketchup 3D model format https://www.sketchup.com/
0	string	\xff\xfe\xff\x0e\x53\x00\x6b\x00\x65\x00\x74\x00\x63\x00\x68\x00\x55\x00\x70\x00\x20\x00\x4d\x00\x6f\x00\x64\x00\x65\x00\x6c\x00	SketchUp Model
!:mime application/vnd.sketchup.skp
!:ext skp