From: Christos Zoulas Date: Sat, 10 Aug 2019 13:34:17 +0000 (+0000) Subject: improve Bentley/Intergraph MicroStation "dgn" file detection (Joerg Jenderek) X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=06f62e3f2aa9ba4e55c0c0dc768d941b283f094d;p=file improve Bentley/Intergraph MicroStation "dgn" file detection (Joerg Jenderek) --- diff --git a/magic/Magdir/cad b/magic/Magdir/cad index 48a76d14..509cab31 100644 --- a/magic/Magdir/cad +++ b/magic/Magdir/cad @@ -1,6 +1,6 @@ #------------------------------------------------------------------------------ -# $File: cad,v 1.19 2019/04/19 00:42:27 christos Exp $ +# $File: cad,v 1.20 2019/08/10 13:34:17 christos Exp $ # autocad: file(1) magic for cad files # @@ -18,29 +18,162 @@ # 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 +# +# URL: https://en.wikipedia.org/wiki/MicroStation +# reference: http://dgnlib.maptools.org/dgn.html +# http://dgnlib.maptools.org/dl/ref18.pdf +# Update: Joerg Jenderek +# Note: verfied by command like `dgndump seed2d_b.dgn` +# test for level 8 and type 5 or 9 +0 beshort&0x3F73 0x0801 +# level of element like 8 +#>0 ubyte&0x3F x \b, level %u +#>0 ubyte &0x80 \b, complex +#>0 ubyte &0x40 \b, reserved +# type of element 9~TCB 8~Digitizer setup 5~Group Data Elements +#>1 ubyte&0x7F x \b, type %u +# words to follow in element: 17H~CEL libray 2FEh~DGN 9FEh,DFEh~CIT +#>2 uleshort x \b, words 0x%4.4x to follow +# test for 3 reserved 0 bytes in CIT or "conversion" in ViewInfo structure (DGN CEL) +#>508 ubelong x \b, RESERVED %8.8x +>508 ubelong&0xFFffFF00 =0 +# test for level 8 and type 9 for INGR raster image +>>0 beshort 0x0809 +# test for length of 1st element is multiple of blocks a 512 bytes +>>>2 ubyte 0xfe +>>>>0 use ingr-image +# test for DGN or CEL by jump words (uleshort) forward to next element +>(2.s*2) ulong x +# 2nd element type: 8~Digitizer~DesiGNfile 1~library cell header other~CIT +#>>&1 ubyte&0x7F x \b, 2nd type %u +# DGN +>>&1 ubyte&0x7F 8 +>>>2 uleshort =0x02FE Bentley/Intergraph Microstation CAD drawing +!:mime application/x-bentley-dgn +!:ext dgn +# The 0x40 bit of this byte is 1 if the file is 3D, otherwise 0 +>>>>1214 ubyte &0x40 3D +>>>>1214 ubyte ^0x40 2D +# 2 chars for name of subunits like ft FT in IN mu m mm '\0 '\040 +>>>>1120 string x \b, units %-.2s +# 2 chars for name of master unit like IN in ML SU tn th TH HU mm "\0 "\040 \0\0 +>>>>1122 string >\0 %-.2s +#>>>>1120 ubelong x \b, units 0x%8.8x +# element range low,high x y z like xlow=0 08010000h 01080000h +#>>>>4 ubelong !0 \b, xlow %8.8x +#>>>>8 ubelong !0 \b, ylow %8.8x +#>>>>12 ubelong !0 \b, zlow %8.8x +#>>>>16 ubelong !0 \b, xhigh %8.8x +#>>>>20 ubelong !0 \b, yhigh %8.8x +#>>>>24 ubelong !0 \b, zhigh %8.8x +# graphic group number; all other elements in that group have same non-0 number +#>>>>28 leshort x \b, grphgrp 0x%4.4x +# words to optional attribute linkage +#>>>>30 ubyte x \b, attindx \%o +#>>>>31 ubyte x \b\%o +# >>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 +# elements properties indicator +#>>>>32 uleshort !0 \b, properties 0x%4.4x +# class 0~Primary +#>>>>>32 uleshort&0x000F !0 \b, class 0x%4.4x +# Symbology +#>>>>>34 uleshort x \b, Symbology 0x%4.4x +# test for 2nd element type 1~library cell header +>>&1 ubyte&0x7F 1 +# test for 1st element with level 8 and type 5 for cell library +>>>0 beshort 0x0805 Bentley/Intergraph Microstation CAD cell library +!:mime application/x-bentley-cel +!:ext cel +# +# URL: http://fileformats.archiveteam.org/wiki/Intergraph_Raster +# reference: https://web.archive.org/web/20140903185431/ +# http://oreilly.com/www/centers/gff/formats/ingr/index.htm +# note: verfied by command like `nconvert -fullinfo LONGLAT.CIT` +# display information for intergraph raster bitmap +0 name ingr-image +# in 5.37 "Microstation CITFile" "Bentley/Intergraph MicroStation CIT raster CAD" +# DataTypeCode indicates format, depth of the pixel data and used compression +>4 uleshort x Intergraph raster image +>>4 uleshort 0x0009 \b, Run-Length Encoded 1-bit +!:mime image/x-intergraph-rle +!:ext rel +>>4 uleshort 0x0018 \b, CCITT Group 4 1-bit +!:mime image/x-intergraph-cit +!:ext cit +>>4 uleshort 27 \b, Adaptive RLE RGB +!:mime image/x-intergraph-rgb +!:ext rgb +>>4 default x +>>>4 uleshort x \b, Type %u +!:mime image/x-intergraph +# TODO: +#>4 uleshort 0 \b, no data +# ... +#>4 uleshort 0x0045 \b, Continuous Tone CMKY (Uncompressed) +# ApplicationType: 0~generic raster image 3~drawing, scanning +# 8~I/IMAGE and MicroStation Imager 9~ModelView +>6 uleshort !0 \b, ApplicationType %u +#>6 uleshort x \b, ApplicationType %u +# XViewOrigin; Raster grid data X origin +#>8 ulequad !0 \b, XViewOrigin %llx +# PixelsPerLine is the number of pixels in a scan line of bitmapp +>184 ulelong x \b, %u x +# NumberOfLines is height of the raster data in scanlines +>188 ulelong x %u +# DeviceResolution; resolution of scanning device +# positive indicates number of micros between lines; negative indicates DPI +#>192 leshort x \b, DeviceResolution %d +# ScanlineOrient indicates the origin and the orientation of the scan lines +#>194 ubyte x \b, ScanlineOrient %x +>194 ubyte x \b, orientation +>194 ubyte &0x01 right +>194 ubyte ^0x01 left +>194 ubyte &0x02 down +>194 ubyte ^0x02 top +>194 ubyte &0x04 horizontal +>194 ubyte ^0x04 vertical +# ScannableFlag; Scanline indexing method used +#>195 ubyte !0 \b, ScannableFlag 0x%x +# RotationAngle; Rotation angle of raster data +#>196 ubequad !0 \b, RotationAngle 0x%llx +# SkewAngle; Skew angle of raster data +#>204 ubequad !0 \b, SkewAngle %llx +# DataTypeModifier; Additional raster data format info +#>212 uleshort !0 \b, DataTypeModifier 0x%4.4x +# DesignFile[66]; Name of the design file +>214 string >\0 \b, DesignFile %-.66s +# DatabaseFile[66]; Name of the database file +>280 string >\0 \b, DatabaseFile %-.66s +# ParentGridFile[66]; Name of parent grid file +>346 string >\0 \b, ParentGridFile %-.66s +# FileDescription[80]; Text description of file and contents +>412 string >\0 \b, FileDescription %-.80s +# MinValue +#>492 ubequad !0 \b, MinValue 0x%llx +# MaxValue +#>500 ubequad !0 \b, MaxValue 0x%llx +# Reserved[3]; Unused (always 0) +#>508 ubelong&0xFFffFF00 x \b, RESERVED %8.8x +# GridFileVersion; Grid File Version like 2 3 +#>511 ubyte x \b, GridFileVersion %x # AutoCAD # Merge of the different contributions and updates from https://en.wikipedia.org/wiki/Dwg @@ -140,12 +273,6 @@ # 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 # 3DS (3d Studio files) 0 leshort 0x4d4d