2 #------------------------------------------------------------------------------
3 # $File: cad,v 1.9 2009/09/19 16:28:08 christos Exp $
4 # autocad: file(1) magic for cad files
7 # AutoCAD DWG versions R13/R14 (www.autodesk.com)
8 # Written December 01, 2003 by Lester Hightower
9 # Based on the DWG File Format Specifications at http://www.opendwg.org/
10 0 string \101\103\061\060\061 AutoCAD
11 >5 string \062\000\000\000\000 DWG ver. R13
12 >5 string \064\000\000\000\000 DWG ver. R14
14 # Microstation DGN/CIT Files (www.bentley.com)
15 # Last updated July 29, 2005 by Lester Hightower
16 # DGN is the default file extension of Microstation/Intergraph CAD files.
17 # CIT is the proprietary raster format (similar to TIFF) used to attach
18 # raster underlays to Microstation DGN (vector) drawings.
20 # http://www.wotsit.org/search.asp
21 # http://filext.com/detaillist.php?extdetail=DGN
22 # http://filext.com/detaillist.php?extdetail=CIT
24 # http://www.bentley.com/products/default.cfm?objectid=97F351F5-9C35-4E5E-89C2
25 # 3F86C928&method=display&p_objectid=97F351F5-9C35-4E5E-89C280A93F86C928
26 # http://www.bentley.com/products/default.cfm?objectid=A5C2FD43-3AC9-4C71-B682
27 # 721C479F&method=display&p_objectid=A5C2FD43-3AC9-4C71-B682C7BE721C479F
28 0 string \010\011\376 Microstation
30 >>30 string \026\105 DGNFile
31 >>30 string \034\105 DGNFile
32 >>30 string \073\107 DGNFile
33 >>30 string \073\110 DGNFile
34 >>30 string \106\107 DGNFile
35 >>30 string \110\103 DGNFile
36 >>30 string \120\104 DGNFile
37 >>30 string \172\104 DGNFile
38 >>30 string \172\105 DGNFile
39 >>30 string \172\106 DGNFile
40 >>30 string \234\106 DGNFile
41 >>30 string \273\105 DGNFile
42 >>30 string \306\106 DGNFile
43 >>30 string \310\104 DGNFile
44 >>30 string \341\104 DGNFile
45 >>30 string \372\103 DGNFile
46 >>30 string \372\104 DGNFile
47 >>30 string \372\106 DGNFile
48 >>30 string \376\103 DGNFile
49 >4 string \030\000\000 CITFile
50 >4 string \030\000\003 CITFile
52 # AutoCad, from Nahuel Greco
53 # AutoCAD DWG versions R12/R13/R14 (www.autodesk.com)
54 0 string AC1012 AutoCad (release 12)
55 0 string AC1013 AutoCad (release 13)
56 0 string AC1014 AutoCad (release 14)
58 # CAD: file(1) magic for computer aided design files
59 # Phillip Griffith <phillip dot griffith at gmail dot com>
60 # AutoCAD magic taken from the Open Design Alliance's OpenDWG specifications.
62 0 belong 0x08051700 Bentley/Intergraph MicroStation DGN cell library
63 0 belong 0x0809fe02 Bentley/Intergraph MicroStation DGN vector CAD
64 0 belong 0xc809fe02 Bentley/Intergraph MicroStation DGN vector CAD
65 0 beshort 0x0809 Bentley/Intergraph MicroStation
67 >>0x04 beshort 0x1800 CIT raster CAD
68 0 string AC1012 AutoDesk AutoCAD R13
69 0 string AC1014 AutoDesk AutoCAD R14
70 0 string AC1015 AutoDesk AutoCAD R2000