contrib/file-4/magic/magic2mime

   1 #! /usr/local/bin/perl
   2 # -*- PERL -*-
   3 # $Id: magic2mime,v 1.2 2003/03/23 04:17:27 christos Exp $
   4 # Copyright (c) 1996, 1997 vax@linkdead.paranoia.com (VaX#n8)
   5 #
   6 # Usage: echo 'your-file-output-here' | file_to_ctype.pl
   7 #        file -b files... | file_to_ctype.pl
   8 # It acts like a filter, reading from STDIN and any files on the command
   9 # line, printing to STDOUT.
  10
  11 ## refs
  12 # http://www.faqs.org/faqs/mail/mime-faq/part1/index.html
  13 #  comp.mail.mime FAQ
  14 # ftp://ftp.isi.edu/in-notes/iana/assignments/media-types/media-types
  15 #  assigned content-types
  16 # ftp://ftp.uu.net/inet/rfc/rfc-index
  17 #  RFC index; search for MIME
  18
  19 @mapping =
  20 (
  21         # defaults
  22     'data', 'application/octet-stream',
  23     'text', 'text/plain',
  24         # more specific
  25         '^Rich Text Format data', 'text/richtext',
  26         '^HTML document text', 'text/html',
  27         '^exported SGML document text', 'text/sgml',
  28         'mail text', 'message/rfc822',
  29         'news text', 'message/news',
  30         '^PostScript document text', 'application/postscript',
  31         '^BinHex binary text', 'application/mac-binhex40',
  32         '^Zip archive data', 'application/zip',
  33         '^Microsoft Word', 'application/msword',
  34         '^PGP key', 'application/pgp-keys',
  35         '^PGP encrypted', 'application/pgp-encrypted',
  36         '^PGP armored data signature', 'application/pgp-signature',
  37     '^JPEG image', 'image/jpeg',
  38     '^GIF image', 'image/gif',
  39         '^PNG image', 'image/png',
  40     '^TIFF image', 'image/tiff',
  41         'Computer Graphics Metafile', 'image/cgf',
  42         '^Sun/NeXT audio data', 'audio/basic',
  43     '^MPEG', 'video/mpeg',
  44     '^Apple QuickTime movie', 'video/quicktime',
  45         # made up by me
  46     '^bitmap', 'image/x-bitmap',
  47     '^PC bitmap data, Windows 3.x format', 'image/x-msw3bmp',
  48     '^FLI', 'video/x-fli',
  49     '^FLC', 'video/x-flc',
  50     'AVI data', 'video/x-avi',
  51     'WAVE', 'audio/x-wav',
  52     'VOC', 'audio/x-voc',
  53 );
  54
  55 local($mimetype,$index,$regexp);
  56 while (<>)
  57   {
  58     chop;
  59     $index = $#mapping - 1;
  60     while ($index > -1 && !defined($mimetype))
  61       {
  62          $mimetype = $mapping[$index + 1] if (/$mapping[$index]/);
  63          $index -= 2;
  64       }
  65     print "$mimetype\n";
  66         undef $mimetype; # hack
  67   }
  68 0;