file/magic2mime

#! /usr/bin/perl -w
# -*- PERL -*-
# $Id: magic2mime,v 1.1 1998/02/15 23:18:53 christos Exp $
# Copyright (c) 1996, 1997 vax@linkdead.paranoia.com (VaX#n8)
#
# Usage: echo 'your-file-output-here' | file_to_ctype.pl
#        file -b files... | file_to_ctype.pl
# It acts like a filter, reading from STDIN and any files on the command
# line, printing to STDOUT.

## refs
# http://www.faqs.org/faqs/mail/mime-faq/part1/index.html
#  comp.mail.mime FAQ
# ftp://ftp.isi.edu/in-notes/iana/assignments/media-types/media-types
#  assigned content-types
# ftp://ftp.uu.net/inet/rfc/rfc-index
#  RFC index; search for MIME

@mapping =
(
	# defaults
    'data' => 'application/octet-stream',
    'text' => 'text/plain',
	# more specific
	'^Rich Text Format data' => 'text/richtext',
	'^HTML document text' => 'text/html',
	'^exported SGML document text' => 'text/sgml',
	'mail text' => 'message/rfc822',
	'news text' => 'message/news',
	'^PostScript document text.*type EPS' => 'image/eps',
	'^PostScript document text' => 'application/postscript',
	'^PDF document' => 'application/pdf',
	'^Rich Text Format' => 'application/rtf',
	'^TeX DVI file' => 'application/x-dvi',
	'^BinHex binary text' => 'application/mac-binhex40',
	'^Zip archive data' => 'application/zip',
	'Microsoft Word[ 0-9.]*document data' => 'application/msword',
	'^PGP key' => 'application/pgp-keys',
	'^PGP encrypted' => 'application/pgp-encrypted',
	'^PGP armored data signature' => 'application/pgp-signature',
    '^JPEG image' => 'image/jpeg',
    '^GIF image' => 'image/gif',
	'^PNG image' => 'image/png',
    '^TIFF image' => 'image/tiff',
	'Computer Graphics Metafile' => 'image/cgf',
	'^Sun/NeXT audio data' => 'audio/basic',
    '^MPEG.*layer 3 audio' => 'audio/mpeg',
    '^MPEG' => 'video/mpeg',
    '^Apple QuickTime movie' => 'video/quicktime',
    '^X pixmap image' => 'image/x-xpixmap',
	# made up by me
    '^bitmap' => 'image/x-bitmap',
    '^PC bitmap data, Windows 3.x format' => 'image/x-msw3bmp',
    '^FLI' => 'video/x-fli',
    '^FLC' => 'video/x-flc',
    'AVI data' => 'video/x-avi',
    'WAVE' => 'audio/x-wav',
    'VOC' => 'audio/x-voc',
	'Debian binary package' => 'application/x-debian-package',
	'compiled Java class data' => 'application/x-java',
	'MPEG.*audio stream data' => 'audio/mpeg',
	'Standard MIDI data' => 'audio/midi',
);

my($mimetype,$index,$found);
while (<>)
  {
    chop;
    $index = $#mapping - 1;
    $found = 0;
    $mimetype = "application/octet-stream";
    while ($index > -1 && !$found)
      {
         if(/$mapping[$index]/)
         {
		$mimetype = $mapping[$index + 1];
		$found=1;
         }
         $index -= 2;
      }
    print "$mimetype\n";
  }
0;