1*03c288bbSchristos 2*03c288bbSchristos#------------------------------------------------------------------------------ 3*03c288bbSchristos# $File: dif,v 1.1 2020/04/09 19:14:01 christos Exp $ 4*03c288bbSchristos# dif: file(1) magic for DIF text files 5*03c288bbSchristos 6*03c288bbSchristos#------------------------------------------------------------------------------ 7*03c288bbSchristos# From: Joerg Jenderek 8*03c288bbSchristos# URL: http://en.wikipedia.org/wiki/Data_Interchange_Format 9*03c288bbSchristos# http://fileformats.archiveteam.org/wiki/Data_Interchange_Format 10*03c288bbSchristos# Note: called by TrID "Data Interchange Format", 11*03c288bbSchristos# by DROID x-fmt/368 "VisiCalc Database" 12*03c288bbSchristos0 string TABLE 13*03c288bbSchristos# skip text starting with TABLE by looking for numeric version on 2nd line 14*03c288bbSchristos>6 search/2 0, 15*03c288bbSchristos# skip DROID x-fmt-41-signature-id-380.dif by looking for key word TUPLES at the beginning 16*03c288bbSchristos>>27 search/128 TUPLES Data Interchange Format 17*03c288bbSchristos# https://www.pcmatic.com/company/libraries/fileextension/detail.asp?ext=dif.html 18*03c288bbSchristos#!:mime application/x-dif-spreadsheet Gnumeric 19*03c288bbSchristos# https://github.com/LibreOffice/online/blob/master/discovery.xml 20*03c288bbSchristos#!:mime application/x-dif-document LibreOffice 21*03c288bbSchristos# https://www.wikidata.org/wiki/Wikidata:WikiProject_Informatics/File_formats/Lists/File_formats 22*03c288bbSchristos!:mime application/x-dif 23*03c288bbSchristos# https://extension.nirsoft.net/dif 24*03c288bbSchristos#!:mime application/vnd.ms-excel 25*03c288bbSchristos#!:mime text/plain 26*03c288bbSchristos!:ext dif 27*03c288bbSchristos# look for double quote 0x22 on 3rd line 28*03c288bbSchristos>>>10 search/3 " 29*03c288bbSchristos# skip if next character also double quote 30*03c288bbSchristos>>>>&0 ubyte !0x22 \b, generator or table name 31*03c288bbSchristos# comment like EXCEL, pwm enclosed in double quotes 32*03c288bbSchristos>>>>>&-2 string x %s 33*03c288bbSchristos 34