#------------------------------------------------------------------------------ # $File: cad,v 1.11 2011/12/08 12:12:46 rrt Exp $ # autocad: file(1) magic for cad files # # 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/ 0 string \101\103\061\060\061 AutoCAD >5 string \062\000\000\000\000 DWG ver. R13 >5 string \064\000\000\000\000 DWG ver. R14 # 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 # http://filext.com/detaillist.php?extdetail=DGN # http://filext.com/detaillist.php?extdetail=CIT # # http://www.bentley.com/products/default.cfm?objectid=97F351F5-9C35-4E5E-89C2 # 3F86C928&method=display&p_objectid=97F351F5-9C35-4E5E-89C280A93F86C928 # http://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, from Nahuel Greco # AutoCAD DWG versions R12/R13/R14 (www.autodesk.com) 0 string AC1012 DWG AutoDesk AutoCad (release 12) 0 string AC1013 DWG AutoDesk AutoCad (release 13) 0 string AC1014 DWG AutoDesk AutoCad (release 14) # A new version of AutoCAD DWG # Sergey Zaykov (mail_of_sergey@mail.ru, sergey_zaikov@rambler.ru, # ICQ 358572321) # From various sources like: # http://autodesk.blogs.com/between_the_lines/autocad-release-history.html 0 string AC1018 DWG AutoDesk AutoCAD 2004/2005/2006 0 string AC1021 DWG AutoDesk AutoCAD 2007/2008/2009 0 string AC1024 DWG AutoDesk AutoCAD 2010/2011 # KOMPAS 2D drawing from ASCON # This is KOMPAS 2D drawing or fragment of drawing but is not detailed nor # gathered nor specification # ASCON http://ascon.net/main/ in English, # http://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, http://vkontakte.ru/id16076543) # From: # http://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 # 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 0 string AC1012 AutoDesk AutoCAD R13 0 string AC1014 AutoDesk AutoCAD R14 0 string AC1015 AutoDesk AutoCAD R2000 # 3DS (3d Studio files) Conflicts with diff output 0x3d '=' #16 beshort 0x3d3d image/x-3ds