1 2#------------------------------------------------------------------------------ 3# $File: cad,v 1.31 2022/12/09 15:36:23 christos Exp $ 4# autocad: file(1) magic for cad files 5# 6 7# Microstation DGN/CIT Files (www.bentley.com) 8# Last updated July 29, 2005 by Lester Hightower 9# DGN is the default file extension of Microstation/Intergraph CAD files. 10# CIT is the proprietary raster format (similar to TIFF) used to attach 11# raster underlays to Microstation DGN (vector) drawings. 12# 13# http://www.wotsit.org/search.asp 14# https://filext.com/detaillist.php?extdetail=DGN 15# https://filext.com/detaillist.php?extdetail=CIT 16# 17# https://www.bentley.com/products/default.cfm?objectid=97F351F5-9C35-4E5E-89C2 18# 3F86C928&method=display&p_objectid=97F351F5-9C35-4E5E-89C280A93F86C928 19# https://www.bentley.com/products/default.cfm?objectid=A5C2FD43-3AC9-4C71-B682 20# 721C479F&method=display&p_objectid=A5C2FD43-3AC9-4C71-B682C7BE721C479F 21# 22# URL: https://en.wikipedia.org/wiki/MicroStation 23# reference: http://dgnlib.maptools.org/dgn.html 24# http://dgnlib.maptools.org/dl/ref18.pdf 25# Update: Joerg Jenderek 26# Note: verfied by command like `dgndump seed2d_b.dgn` 27# test for level 8 and type 5 or 9 280 beshort&0x3F73 0x0801 29# level of element like 8 30#>0 ubyte&0x3F x \b, level %u 31#>0 ubyte &0x80 \b, complex 32#>0 ubyte &0x40 \b, reserved 33# type of element 9~TCB 8~Digitizer setup 5~Group Data Elements 34#>1 ubyte&0x7F x \b, type %u 35# words to follow in element: 17H~CEL library 2FEh~DGN 9FEh,DFEh~CIT 36#>2 uleshort x \b, words %#4.4x to follow 37# test for 3 reserved 0 bytes in CIT or "conversion" in ViewInfo structure (DGN CEL) 38#>508 ubelong x \b, RESERVED %8.8x 39>508 ubelong&0xFFffFF00 =0 40# test for level 8 and type 9 for INGR raster image 41>>0 beshort 0x0809 42# test for length of 1st element is multiple of blocks a 512 bytes 43>>>2 ubyte 0xfe 44>>>>0 use ingr-image 45# test for DGN or CEL by jump words (uleshort) forward to next element 46>(2.s*2) ulong x 47# 2nd element type: 8~Digitizer~DesiGNfile 1~library cell header other~CIT 48#>>&1 ubyte&0x7F x \b, 2nd type %u 49# DGN 50>>&1 ubyte&0x7F 8 51>>>2 uleshort =0x02FE Bentley/Intergraph Microstation CAD drawing 52!:mime application/x-bentley-dgn 53!:ext dgn 54# The 0x40 bit of this byte is 1 if the file is 3D, otherwise 0 55>>>>1214 ubyte &0x40 3D 56>>>>1214 ubyte ^0x40 2D 57# 2 chars for name of subunits like ft FT in IN mu m mm '\0 '\040 58>>>>1120 string x \b, units %-.2s 59# 2 chars for name of master unit like IN in ML SU tn th TH HU mm "\0 "\040 \0\0 60>>>>1122 string >\0 %-.2s 61#>>>>1120 ubelong x \b, units %#8.8x 62# element range low,high x y z like xlow=0 08010000h 01080000h 63#>>>>4 ubelong !0 \b, xlow %8.8x 64#>>>>8 ubelong !0 \b, ylow %8.8x 65#>>>>12 ubelong !0 \b, zlow %8.8x 66#>>>>16 ubelong !0 \b, xhigh %8.8x 67#>>>>20 ubelong !0 \b, yhigh %8.8x 68#>>>>24 ubelong !0 \b, zhigh %8.8x 69# graphic group number; all other elements in that group have same non-0 number 70#>>>>28 leshort x \b, grphgrp %#4.4x 71# words to optional attribute linkage 72#>>>>30 ubyte x \b, attindx \%o 73#>>>>31 ubyte x \b\%o 74# >>30 string \026\105 DGNFile 75# >>30 string \034\105 DGNFile 76# >>30 string \073\107 DGNFile 77# >>30 string \073\110 DGNFile 78# >>30 string \106\107 DGNFile 79# >>30 string \110\103 DGNFile 80# >>30 string \120\104 DGNFile 81# >>30 string \172\104 DGNFile 82# >>30 string \172\105 DGNFile 83# >>30 string \172\106 DGNFile 84# >>30 string \234\106 DGNFile 85# >>30 string \273\105 DGNFile 86# >>30 string \306\106 DGNFile 87# >>30 string \310\104 DGNFile 88# >>30 string \341\104 DGNFile 89# >>30 string \372\103 DGNFile 90# >>30 string \372\104 DGNFile 91# >>30 string \372\106 DGNFile 92# >>30 string \376\103 DGNFile 93# elements properties indicator 94#>>>>32 uleshort !0 \b, properties %#4.4x 95# class 0~Primary 96#>>>>>32 uleshort&0x000F !0 \b, class %#4.4x 97# Symbology 98#>>>>>34 uleshort x \b, Symbology %#4.4x 99# test for 2nd element type 1~library cell header 100>>&1 ubyte&0x7F 1 101# test for 1st element with level 8 and type 5 for cell library 102>>>0 beshort 0x0805 Bentley/Intergraph Microstation CAD cell library 103!:mime application/x-bentley-cel 104!:ext cel 105# 106# URL: http://fileformats.archiveteam.org/wiki/Intergraph_Raster 107# reference: https://web.archive.org/web/20140903185431/ 108# http://oreilly.com/www/centers/gff/formats/ingr/index.htm 109# note: verfied by command like `nconvert -fullinfo LONGLAT.CIT` 110# display information for intergraph raster bitmap 1110 name ingr-image 112# in 5.37 "Microstation CITFile" "Bentley/Intergraph MicroStation CIT raster CAD" 113# DataTypeCode indicates format, depth of the pixel data and used compression 114>4 uleshort x Intergraph raster image 115>>4 uleshort 0x0009 \b, Run-Length Encoded 1-bit 116!:mime image/x-intergraph-rle 117!:ext rel 118>>4 uleshort 0x0018 \b, CCITT Group 4 1-bit 119!:mime image/x-intergraph-cit 120!:ext cit 121>>4 uleshort 27 \b, Adaptive RLE RGB 122!:mime image/x-intergraph-rgb 123!:ext rgb 124>>4 default x 125>>>4 uleshort x \b, Type %u 126!:mime image/x-intergraph 127# TODO: 128#>4 uleshort 0 \b, no data 129# ... 130#>4 uleshort 0x0045 \b, Continuous Tone CMKY (Uncompressed) 131# ApplicationType: 0~generic raster image 3~drawing, scanning 132# 8~I/IMAGE and MicroStation Imager 9~ModelView 133>6 uleshort !0 \b, ApplicationType %u 134#>6 uleshort x \b, ApplicationType %u 135# XViewOrigin; Raster grid data X origin 136#>8 ulequad !0 \b, XViewOrigin %llx 137# PixelsPerLine is the number of pixels in a scan line of bitmapp 138>184 ulelong x \b, %u x 139# NumberOfLines is height of the raster data in scanlines 140>188 ulelong x %u 141# DeviceResolution; resolution of scanning device 142# positive indicates number of micros between lines; negative indicates DPI 143#>192 leshort x \b, DeviceResolution %d 144# ScanlineOrient indicates the origin and the orientation of the scan lines 145#>194 ubyte x \b, ScanlineOrient %x 146>194 ubyte x \b, orientation 147>194 ubyte &0x01 right 148>194 ubyte ^0x01 left 149>194 ubyte &0x02 down 150>194 ubyte ^0x02 top 151>194 ubyte &0x04 horizontal 152>194 ubyte ^0x04 vertical 153# ScannableFlag; Scanline indexing method used 154#>195 ubyte !0 \b, ScannableFlag %#x 155# RotationAngle; Rotation angle of raster data 156#>196 ubequad !0 \b, RotationAngle %#llx 157# SkewAngle; Skew angle of raster data 158#>204 ubequad !0 \b, SkewAngle %llx 159# DataTypeModifier; Additional raster data format info 160#>212 uleshort !0 \b, DataTypeModifier %#4.4x 161# DesignFile[66]; Name of the design file 162>214 string >\0 \b, DesignFile %-.66s 163# DatabaseFile[66]; Name of the database file 164>280 string >\0 \b, DatabaseFile %-.66s 165# ParentGridFile[66]; Name of parent grid file 166>346 string >\0 \b, ParentGridFile %-.66s 167# FileDescription[80]; Text description of file and contents 168>412 string >\0 \b, FileDescription %-.80s 169# MinValue 170#>492 ubequad !0 \b, MinValue %#llx 171# MaxValue 172#>500 ubequad !0 \b, MaxValue %#llx 173# Reserved[3]; Unused (always 0) 174#>508 ubelong&0xFFffFF00 x \b, RESERVED %8.8x 175# GridFileVersion; Grid File Version like 2 3 176#>511 ubyte x \b, GridFileVersion %x 177 178# AutoCAD 179# Merge of the different contributions and updates from https://en.wikipedia.org/wiki/Dwg 180# and https://www.iana.org/assignments/media-types/image/vnd.dwg 1810 string MC0.0 DWG AutoDesk AutoCAD Release 1.0 182!:mime image/vnd.dwg 1830 string AC1.2 DWG AutoDesk AutoCAD Release 1.2 184!:mime image/vnd.dwg 1850 string AC1.3 DWG AutoDesk AutoCAD Release 1.3 186!:mime image/vnd.dwg 1870 string AC1.40 DWG AutoDesk AutoCAD Release 1.40 188!:mime image/vnd.dwg 1890 string AC1.50 DWG AutoDesk AutoCAD Release 2.05 190!:mime image/vnd.dwg 1910 string AC2.10 DWG AutoDesk AutoCAD Release 2.10 192!:mime image/vnd.dwg 1930 string AC2.21 DWG AutoDesk AutoCAD Release 2.21 194!:mime image/vnd.dwg 1950 string AC2.22 DWG AutoDesk AutoCAD Release 2.22 196!:mime image/vnd.dwg 1970 string AC1001 DWG AutoDesk AutoCAD Release 2.22 198!:mime image/vnd.dwg 1990 string AC1002 DWG AutoDesk AutoCAD Release 2.50 200!:mime image/vnd.dwg 2010 string AC1003 DWG AutoDesk AutoCAD Release 2.60 202!:mime image/vnd.dwg 2030 string AC1004 DWG AutoDesk AutoCAD Release 9 204!:mime image/vnd.dwg 2050 string AC1006 DWG AutoDesk AutoCAD Release 10 206!:mime image/vnd.dwg 2070 string AC1009 DWG AutoDesk AutoCAD Release 11/12 208!:mime image/vnd.dwg 209# AutoCAD DWG versions R13/R14 (www.autodesk.com) 210# Written December 01, 2003 by Lester Hightower 211# Based on the DWG File Format Specifications at http://www.opendwg.org/ 212# AutoCad, from Nahuel Greco 213# AutoCAD DWG versions R12/R13/R14 (www.autodesk.com) 2140 string AC1012 DWG AutoDesk AutoCAD Release 13 215!:mime image/vnd.dwg 2160 string AC1013 DWG AutoDesk AutoCAD Release 13c3 217!:mime image/vnd.dwg 2180 string AC1014 DWG AutoDesk AutoCAD Release 14 219!:mime image/vnd.dwg 2200 string AC1015 DWG AutoDesk AutoCAD 2000 221!:mime image/vnd.dwg 222 223# A new version of AutoCAD DWG 224# Sergey Zaykov (mail_of_sergey@mail.ru, sergey_zaikov@rambler.ru, 225# ICQ 358572321) 226# From various sources like: 227# https://autodesk.blogs.com/between_the_lines/autocad-release-history.html 2280 string AC1018 DWG AutoDesk AutoCAD 2004/2005/2006 229!:mime image/vnd.dwg 2300 string AC1021 DWG AutoDesk AutoCAD 2007/2008/2009 231!:mime image/vnd.dwg 2320 string AC1024 DWG AutoDesk AutoCAD 2010/2011/2012 233!:mime image/vnd.dwg 2340 string AC1027 DWG AutoDesk AutoCAD 2013-2017 235!:mime image/vnd.dwg 236 237# From GNU LibreDWG 2380 string AC1032 DWG AutoDesk AutoCAD 2018/2019/2020 239!:mime image/vnd.dwg 2400 string AC1035 DWG AutoDesk AutoCAD 2021 241!:mime image/vnd.dwg 242 243# KOMPAS 2D drawing from ASCON 244# This is KOMPAS 2D drawing or fragment of drawing but is not detailed nor 245# gathered nor specification 246# ASCON https://ascon.net/main/ in English, 247# https://ascon.ru/ main site in Russian 248# Extension is CDW for drawing and FRW for fragment of drawing 249# Sergey Zaykov (mail_of_sergey@mail.ru, sergey_zaikov@rambler.ru, 250# ICQ 358572321, https://vkontakte.ru/id16076543) 251# From: 252# https://sd.ascon.ru/otrs/customer.pl?Action=CustomerFAQ&CategoryID=4&ItemID=292 253# (in russian) and my experiments 2540 string KF 255>2 belong 0x4E00000C Kompas drawing 12.0 SP1 256>2 belong 0x4D00000C Kompas drawing 12.0 257>2 belong 0x3200000B Kompas drawing 11.0 SP1 258>2 belong 0x3100000B Kompas drawing 11.0 259>2 belong 0x2310000A Kompas drawing 10.0 SP1 260>2 belong 0x2110000A Kompas drawing 10.0 261>2 belong 0x08000009 Kompas drawing 9.0 SP1 262>2 belong 0x05000009 Kompas drawing 9.0 263>2 belong 0x33010008 Kompas drawing 8+ 264>2 belong 0x1A000008 Kompas drawing 8.0 265>2 belong 0x2C010107 Kompas drawing 7+ 266>2 belong 0x05000007 Kompas drawing 7.0 267>2 belong 0x32000006 Kompas drawing 6+ 268>2 belong 0x09000006 Kompas drawing 6.0 269>2 belong 0x5C009005 Kompas drawing 5.11R03 270>2 belong 0x54009005 Kompas drawing 5.11R02 271>2 belong 0x51009005 Kompas drawing 5.11R01 272>2 belong 0x22009005 Kompas drawing 5.10R03 273>2 belong 0x22009005 Kompas drawing 5.10R02 mar 274>2 belong 0x21009005 Kompas drawing 5.10R02 febr 275>2 belong 0x19009005 Kompas drawing 5.10R01 276>2 belong 0xF4008005 Kompas drawing 5.9R01.003 277>2 belong 0x1C008005 Kompas drawing 5.9R01.002 278>2 belong 0x11008005 Kompas drawing 5.8R01.003 279 280# CAD: file(1) magic for computer aided design files 281# Phillip Griffith <phillip dot griffith at gmail dot com> 282# AutoCAD magic taken from the Open Design Alliance's OpenDWG specifications. 283# 284 285# 3DS (3d Studio files) 2860 leshort 0x4d4d 287>6 leshort 0x2 288>>8 lelong 0xa 289>>>16 leshort 0x3d3d 3D Studio model 290# Beat sgi MMV 291!:strength +20 292!:mime image/x-3ds 293!:ext 3ds 294 295# MegaCAD 2D/3D drawing (.prt) 296# https://megacad.de/ 297# From: Markus Heidelberg <markus.heidelberg@web.de> 2980 string MegaCad23\0 MegaCAD 2D/3D drawing 299 300# Hoops CAD files 301# https://docs.techsoft3d.com/visualize/3df/latest/build/general/hsf/\ 302# HSF_architecture.html 303# Stephane Charette <stephane.charette@gmail.com> 3040 string ;;\040HSF\040V OpenHSF (Hoops Stream Format) 305>7 regex/9 V[.0-9]{4,5}\040 %s 306!:ext hsf 307 308# AutoCAD Drawing Exchange Format 309# Update: Joerg Jenderek 310# URL: http://fileformats.archiveteam.org/wiki/DXF 311# https://en.wikipedia.org/wiki/AutoCAD_DXF 312# Reference: http://mark0.net/download/triddefs_xml.7z/defs/d/ 313# dxf-var0.trid.xml dxf-var0u.trid.xml dxf-var2.trid.xml dxf-var2u.trid.xml 314# Note: called "AutoCAD Drawing eXchange Format" by TrID and 315# "Drawing Interchange File Format (ASCII)" by DROID 316# GRR: some samples does not match 1st test like: abydos.dxf 3170 regex \^[\ \t]*0\r?\000$ 318>1 regex \^[\ \t]*SECTION\r?$ 319>>2 regex \^[\ \t]*2\r?$ 320# GRR: some samples without HEADER section like: airplan2.dxf 321>>>3 regex \^[\ \t]*HEADER\r?$ AutoCAD Drawing Exchange Format 322#!:mime application/x-dxf 323!:mime image/vnd.dxf 324!:ext dxf 325# DROID PUID fmt/64 fmt-64-signature-id-99.dxf 326>>>>&1 search/8192 MC0.0 \b, 1.0 327# DROID PUID fmt/65 fmt-65-signature-id-100.dxf 328>>>>&1 search/8192 AC1.2 \b, 1.2 329# DROID PUID fmt/66 fmt-66-signature-id-101.dxf 330>>>>&1 search/8192 AC1.3 \b, 1.3 331# DROID PUID fmt/67 fmt-67-signature-id-102.dxf 332>>>>&1 search/8192 AC1.40 \b, 1.4 333# DROID PUID fmt/68 fmt-68-signature-id-103.dxf 334>>>>&1 search/8192 AC1.50 \b, 2.0 335# DROID PUID fmt/69 fmt-69-signature-id-104.dxf 336>>>>&1 search/8192 AC2.10 \b, 2.1 337# DROID PUID fmt/70 fmt-70-signature-id-105.dxf 338>>>>&1 search/8192 AC2.21 \b, 2.2 339# DROID PUID fmt/71 fmt-71-signature-id-106.dxf 340>>>>&1 search/8192 AC1002 \b, 2.5 341# DROID PUID fmt/72 fmt-72-signature-id-107.dxf 342>>>>&1 search/8192 AC1003 \b, 2.6 343# DROID PUID fmt/73 fmt-73-signature-id-108.dxf 344>>>>&1 search/8192 AC1004 \b, R9 345>>>>&1 search/8192 AC1006 \b, R10 346# http://cd.textfiles.com/amigaenv/DXF/OBJEKTE/LASTMINUTE/apple.dxf 347#>>>>&1 search/8192 AC1008 \b, Rfoo 348>>>>&1 search/8192 AC1009 \b, R11/R12 349>>>>&1 search/8192 AC1012 \b, R13 350>>>>&1 search/8192 AC1013 \b, R13c3 351>>>>&1 search/8192 AC1014 \b, R14 352>>>>&1 search/8192 AC1015 \b, version 2000 353>>>>&1 search/8192 AC1018 \b, version 2004 354>>>>&1 search/8192 AC1021 \b, version 2007 355>>>>&1 search/8192 AC1024 \b, version 2010 356>>>>&1 search/8192 AC1027 \b, version 2013 357>>>>&1 search/8192 AC1032 \b, version 2018 358>>>>&1 search/8192 AC1035 \b, version 2021 359 360# The Sketchup 3D model format https://www.sketchup.com/ 3610 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 362!:mime application/vnd.sketchup.skp 363!:ext skp 364 3654 regex/b P[0-9][0-9]\\.[0-9][0-9][0-9][0-9]\\.[0-9][0-9][0-9][0-9]\\.[0-9] NAXOS CAD System file from version %s 366!:strength +40 367 368# glTF (GL Transmission Format) - by the Khronos Group 369# Reference: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#glb-file-format-specification 3700 string glTF glTF binary model 371>4 ulelong x \b, version %d 372>8 ulelong x \b, length %d bytes 373!:mime model/gltf-binary 374!:ext glb 375 376# FBX (FilmBoX) - by Kaydara/Autodesk 377# Reference: https://code.blender.org/2013/08/fbx-binary-file-format-specification 3780 string Kaydara\ FBX\ Binary\ \ \0 Kaydara FBX model, 379>&2 ulelong x version %d 380!:ext fbx 381 382# PLY (Polygon File Format/Stanford Triangle Format) - by Greg Turk 383# Reference: https://web.archive.org/web/20161204152348/http://www.dcs.ed.ac.uk/teaching/cs4/www/graphics/Web/ply.html 3840 string ply\n PLY model, 385!:ext ply 386>4 string format\ ascii\ ASCII, 387>>&0 regex/6 [0-9.]+ version %s 388>4 string format\ binary binary, 389>>&0 string _little_endian\ little endian, 390>>>&0 regex/6 [0-9.]+ version %s 391>>&0 string _big_endian\ big endian, 392>>>&0 regex/6 [0-9.]+ version %s 393 394# VRML (Virtual Reality Modeling Language) - by the Web3D Consortium 395# From: Michel Briand <michelbriand@free.fr> 396# Reference: https://www.web3d.org/standards 3970 string/w #VRML\ V1.0\ ascii VRML 1 file 398!:mime model/vrml 399!:ext wrl 4000 string/w #VRML\ V2.0\ utf8 ISO/IEC 14772 VRML 97 file 401!:mime model/vrml 402!:ext wrl 403# X3D, VRML encoded 4040 string #X3D X3D (Extensible 3D) model, VRML format 405>4 string V 406>>5 regex/6 [0-9.]+ \b, version %s 407!:mime model/x3d+vrml 408!:ext x3dv 409 410## XML-based 3D CAD Formats 411# From: Michel Briand <michelbriand@free.fr>, Oliver Galvin <odg@riseup.net> 4120 string/w \<?xml\ version= 413!:strength + 5 414# X3D (Extensible 3D) 415# Schema: https://www.web3d.org/specifications/x3d-3.2.dtd 416# MIME Type: https://www.iana.org/assignments/media-types/model/x3d+xml 417# Example: https://www.web3d.org/x3d/content/examples/Basic/course/CreateX3DFromStringRandomSpheres.x3d 418>20 search/1000/w \<!DOCTYPE\ X3D X3D (Extensible 3D) model, XML document 419!:mime model/x3d+xml 420!:ext x3d 421# COLLADA (COLLAborative Design Activity) - by the Khronos Group 422# Schema: http://www.collada.org/2005/11/COLLADASchema 423# Reference: https://www.khronos.org/collada 424>20 search/1000/w \<COLLADA COLLADA model, XML document 425!:mime model/vnd.collada+xml 426!:ext dae 427# 3MF (3D Manufacturing Format) - by the 3MF Consortium 428# Schema: http://schemas.microsoft.com/3dmanufacturing/core/2015/02 429# Reference: https://3mf.io/specification 430>20 search/1000/w xmlns="http://schemas.microsoft.com/3dmanufacturing 3MF (3D Manufacturing Format) model, XML document 431!:mime model/3mf 432!:ext 3mf 433# AMF (Additive Manufacturing File) 434# Reference: https://www.astm.org/Standards/ISOASTM52915.htm 435>20 search/1000/w \<amf AMF (Additive Manufacturing Format) model, XML document 436!:mime application/x-amf 437!:ext amf 438