#------------------------------------------------------------------------------
# $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