NAME

File::MimeInfo::Magic - Determine file type with magic

SYNOPSIS

use File::MimeInfo::Magic;
my $mime_type = mimetype($file);

DESCRIPTION

This module inherits from File::MimeInfo, it is transparent to its functions but adds support for the freedesktop magic file.

Magic data is hashed when you need it for the first time. If you want to force hashing earlier use the rehash() function.

EXPORT

The method mimetype is exported by default. The methods magic, inodetype, globs and describe can be exported on demand.

METHODS

See also File::MimeInfo for methods that are inherited.

mimetype($file)

Returns a mime-type string for $file, returns undef on failure.

This method bundles inodetype(), globs() and magic().

Magic rules with an priority of 80 and higher are checked before globs() is called, all other magic rules afterwards.

If this doesn't work the file is read and the mime-type defaults to 'text/plain' or to 'application/octet-stream' when the first ten chars of the file match ascii control chars (white spaces excluded). If the file doesn't exist or isn't readable undef is returned.

If $file is an object reference only magic and the default method are used. See below for details.

magic($file)

Returns a mime-type string for $file based on the magic rules, returns undef on failure.

$file can be an object reference, in that case it is supposed to have a seek() and a read() method. This allows you for example to determine the mimetype of data in memory by using IO::Scalar.

Be aware that when using a filehandle or an IO:: object you need to set the :utf8 binmode yourself if appropriate.

rehash()

Rehash the data files. Glob and magic information is preparsed when this method is called.

If you want to by-pass the XDG basedir system you can specify your database directories by setting @File::MimeInfo::DIRS. But normally it is better to change the XDG basedir environment variables.

default

describe

extensions

globs

inodetype

These routines are imported from File::MimeInfo.

SEE ALSO

File::MimeInfo

LIMITATIONS

Only word sizes of 1, 2 or 4 are supported. Any other word size is ignored and will cause a warning.

AUTHOR

Jaap Karssenberg <pardus@cpan.org> Maintained by Michiel Beijen <mb@x14.nl>

COPYRIGHT

Copyright (c) 2003, 2012 Jaap G Karssenberg. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.