193 lines
6.7 KiB
Plaintext
193 lines
6.7 KiB
Plaintext
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#------------------------------------------------------------------------------
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# $File: mathematica,v 1.17 2023/06/16 19:33:58 christos Exp $
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# mathematica: file(1) magic for mathematica files
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# "H. Nanosecond" <aldomel@ix.netcom.com>
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# Mathematica a multi-purpose math program
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# versions 2.2 and 3.0
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0 name wolfram
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>0 string x Mathematica notebook version 2.x
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!:ext mb
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!:mime application/vnd.wolfram.mathematica
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#mathematica .mb
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0 string \064\024\012\000\035\000\000\000
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>0 use wolfram
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0 string \064\024\011\000\035\000\000\000
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>0 use wolfram
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#
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0 search/1000 Content-type:\040application/mathematica Mathematica notebook version 2.x
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!:ext nb
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!:mime application/mathematica
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# .ma
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# multiple possibilities:
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0 string (*^\n\n::[\011frontEndVersion\ =
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#>41 string >\0 %s
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>0 use wolfram
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#0 string (*^\n\n::[\011palette
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#0 string (*^\n\n::[\011Information
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#>675 string >\0 %s #doesn't work well
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# there may be 'cr' instead of 'nl' in some does this matter?
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# generic:
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0 string (*^\r\r::[\011
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>0 use wolfram
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0 string (*^\r\n\r\n::[\011
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>0 use wolfram
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0 string (*^\015
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>0 use wolfram
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0 string (*^\n\r\n\r::[\011
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>0 use wolfram
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0 string (*^\r::[\011
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>0 use wolfram
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0 string (*^\r\n::[\011
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>0 use wolfram
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0 string (*^\n\n::[\011
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>0 use wolfram
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0 string (*^\n::[\011
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>0 use wolfram
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# Mathematica .mx files
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#0 string (*This\ is\ a\ Mathematica\ binary\ dump\ file.\ It\ can\ be\ loaded\ with\ Get.*) Mathematica binary file
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0 string (*This\ is\ a\ Mathematica\ binary\ Mathematica binary file
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#>71 string \000\010\010\010\010\000\000\000\000\000\000\010\100\010\000\000\000
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# >71... is optional
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>88 string >\0 from %s
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# Mathematica files PBF:
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# 115 115 101 120 102 106 000 001 000 000 000 203 000 001 000
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0 string MMAPBF\000\001\000\000\000\203\000\001\000 Mathematica PBF (fonts I think)
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# .ml files These are menu resources I think
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# these start with "[0-9][0-9][0-9]\ A~[0-9][0-9][0-9]\
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# how to put that into a magic rule?
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4 string \ A~ MAthematica .ml file
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# .nb files
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#too long 0 string (***********************************************************************\n\n\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Mathematica-Compatible Notebook Mathematica 3.0 notebook
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0 string (*********************** Mathematica 3.0 notebook
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# other (* matches it is a comment start in these langs
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# GRR: Too weak; also matches other languages e.g. ML
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#0 string (* Mathematica, or Pascal, Modula-2 or 3 code text
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#########################
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# MatLab v5
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# URL: http://fileformats.archiveteam.org/wiki/MAT
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# Reference: https://www.mathworks.com/help/pdf_doc/matlab/matfile_format.pdf
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# first 116 bytes of header contain text in human-readable form
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0 string MATLAB Matlab v
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#>11 string/T x \b, at 11 "%.105s"
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#!:mime application/octet-stream
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!:mime application/x-matlab-data
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!:ext mat
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# https://de.mathworks.com/help/matlab/import_export/mat-file-versions.html
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# level of the MAT-file like: 5.0 7.0 or maybe 7.3
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#>7 string x LEVEL "%.3s"
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>7 ubyte =0x35 \b5 mat-file
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>7 ubyte !0x35
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>>7 string x \b%.3s mat-file
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>126 short 0x494d (big endian)
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>>124 beshort x version %#04x
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>126 short 0x4d49 (little endian)
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# 0x0100 for level 5.0 and 0x0200 for level 7.0
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>>124 leshort x version %#04x
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# test again so that default clause works
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>126 short x
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# created by MATLAB include Platform sometimes without leading comma (0x2C) or missing
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# like: GLNX86 PCWIN PCWIN64 SOL2 Windows\0407 nt posix
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>>20 search/2 Platform:\040 \b, platform
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>>>&0 string x %-0.2s
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>>>&2 ubyte !0x2C \b%c
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>>>>&0 ubyte !0x2C \b%c
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>>>>>&0 ubyte !0x2C \b%c
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>>>>>>&0 ubyte !0x2C \b%c
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>>>>>>>&0 ubyte !0x2C \b%c
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>>>>>>>>&0 ubyte !0x2C \b%c
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>>>>>>>>>&0 ubyte !0x2C \b%c
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# examples without Platform tag like one_by_zero_char.mat
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>>20 default x
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>>>11 string x "%s"
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# created by MATLAB include time like: Fri Feb 20 15:26:59 2009
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>34 search/9/c created\040on:\040 \b, created
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>>&0 string x %-.24s
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# MatLab v4
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# From: Joerg Jenderek
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# check for valid imaginary flag of Matlab matrix version 4
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13 ushort 0
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# check for valid ASCII matrix name
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>20 ubyte >0x1F
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# skip PreviousEntries.dat with "invalid high" name \304P\344@\001
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>>20 ubyte <0304
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# skip some Netwfw*.dat and $I3KREPH.dat by checking for non zero number of rows
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>>>4 ulong !0
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# skip some CD-ROM filesystem like test-hfs.iso by looking for valid big endian type flag
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>>>>0 ubelong&0xFFffFF00 0x00000300
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>>>>>0 use matlab4
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# no example for 8-bit and 16-bit integers matrix
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>>>>0 ubelong&0xFFffFF00 0x00000400
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>>>>>0 use matlab4
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# branch for Little-Endian variant of Matlab MATrix version 4
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# skip big endian variant by looking for valid low lttle endian type flag
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>>>>0 ulelong <53
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# skip tokens.dat and some Netwfw*.dat by check for valid imaginary flag value of MAT version 4
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>>>>>12 ulelong <2
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# no misidentified little endian MATrix example with "short" matrix name
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>>>>>>16 ulelong <3
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# skip radeon firmware BONAIRE_sdma.bin HAWAII_sdma.bin KABINI_sdma.bin KAVERI_sdma.bin MULLINS_sdma.bin
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# by check for non zero matrix name length
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>>>>>>>16 ubelong >0
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>>>>>>>>0 use \^matlab4
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# little endian MATrix with "long" matrix name or some misidentified samples
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>>>>>>16 ulelong >2
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# skip TileCacheLogo-*.dat with invalid 2nd character \001 of matrix name with length 96
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>>>>>>>21 ubyte >0x1F
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>>>>>>>>0 use \^matlab4
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# Note: called "MATLAB Mat File" with version "Level 4" by DROID via PUID fmt/1550
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# display information of Matlab v4 mat-file
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0 name matlab4 Matlab v4 mat-file
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#!:mime application/octet-stream
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!:mime application/x-matlab-data
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!:ext mat
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# 20-byte header with 5 long integers that contains information describing certain attributes of the Matrix
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# type flag decimal MOPT; maximal 4052=FD4h; maximal 52=34h for little endian
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#>0 ubelong x \b, type flag %u
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#>0 ubelong x (%#x)
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# M: 0~little endian 1~Big Endian 2~VAX D-float 3~VAX G-float 4~Cray
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#>0 ubelong/1000 x \b, M=%u
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>0 ubelong/1000 0 (little endian)
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>0 ubelong/1000 1 (big endian)
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>0 ubelong/1000 2 (VAX D-float)
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>0 ubelong/1000 3 (VAX G-float)
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>0 ubelong/1000 4 (Cray)
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# namlen; the length of the matrix name
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#>16 ubelong x \b, name length %u
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#>(16.L+19) ubyte x \b, TERMINATING NAME CHARACTER=%#x
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# nul terminated matrix name like: fit_params testmatrix testsparsecomplex teststringarray
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#>20 string x \b, MATRIX NAME="%s"
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#>21 ubyte x \b, MAYBE 2ND CHAR=%c
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>16 pstring/L x %s
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# T indicates the matrix type: 0~numeric 1~text 2~sparse
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#>0 ubelong%10 x \b, T=%u
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>0 ubelong%10 0 \b, numeric
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>0 ubelong%10 1 \b, text
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>0 ubelong%10 2 \b, sparse
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# mrows; number of rows in the matrix like: 1 3 8
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>4 ubelong x \b, rows %u
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# ncols; number of columns in the matrix like: 1 3 4 5 9 43
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>8 ubelong x \b, columns %u
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# imagf; imaginary flag; 1~matrix has an imaginary part 0~only real data
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>12 ubelong !0 \b, imaginary (%u)
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# real; Real part of the matrix consists of mrows * ncols numbers
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