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