contrib/file/magic/Magdir/dif

   1
   2 #------------------------------------------------------------------------------
   3 # $File: dif,v 1.1 2020/04/09 19:14:01 christos Exp $
   4 # dif:  file(1) magic for DIF text files
   5
   6 #------------------------------------------------------------------------------
   7 # From: Joerg Jenderek
   8 # URL:  http://en.wikipedia.org/wiki/Data_Interchange_Format
   9 #       http://fileformats.archiveteam.org/wiki/Data_Interchange_Format
  10 # Note: called by TrID "Data Interchange Format",
  11 #       by DROID x-fmt/368 "VisiCalc Database"
  12 0       string          TABLE
  13 # skip text starting with TABLE by looking for numeric version on 2nd line
  14 >6      search/2        0,
  15 # skip DROID x-fmt-41-signature-id-380.dif by looking for key word TUPLES at the beginning
  16 >>27    search/128      TUPLES          Data Interchange Format
  17 # https://www.pcmatic.com/company/libraries/fileextension/detail.asp?ext=dif.html
  18 #!:mime application/x-dif-spreadsheet   Gnumeric
  19 # https://github.com/LibreOffice/online/blob/master/discovery.xml
  20 #!:mime application/x-dif-document      LibreOffice
  21 # https://www.wikidata.org/wiki/Wikidata:WikiProject_Informatics/File_formats/Lists/File_formats
  22 !:mime  application/x-dif
  23 # https://extension.nirsoft.net/dif
  24 #!:mime application/vnd.ms-excel
  25 #!:mime text/plain
  26 !:ext   dif
  27 # look for double quote 0x22 on 3rd line
  28 >>>10   search/3        "
  29 # skip if next character also double quote
  30 >>>>&0  ubyte           !0x22           \b, generator or table name
  31 # comment like EXCEL, pwm enclosed in double quotes
  32 >>>>>&-2        string  x               %s
  33