man File::Type (3): determine file type using magic

SYNOPSIS

my $ft = File::Type->new();

# read in data from file to $data, then
my $type_from_data = $ft->checktype_contents($data);

# alternatively, check file from disk
my $type_from_file = $ft->checktype_filename($file);
# convenient method for checking either a file or data
my $type_1 = $ft->mime_type($file);
my $type_2 = $ft->mime_type($data);

DESCRIPTION

File::Type uses magic numbers (typically at the start of a file) to determine the MIME type of that file.

File::Type can use either a filename, or file contents, to determine the type of a file.

METHODS

new

Returns a new File::Type object.

mime_type($argument)

Takes either data or a filename, determines what it is, and passes the argument through to the relevant method below. If the argument is a directory, returns undef.

checktype_filename($filename)

Opens $filename (if possible; if not, returns undef) and returns the MIME type of the file.

checktype_contents($data)

Matches $data against the magic database criteria and returns the MIME type of the file.

TODO

: * Add additional magic match criteria

BUGS

None known.

NOTES

Some magic definitions in the mime-magic file used in the creation of this module vary from those in other apps (eg image/x-png not image/png).

ACKNOWLEDGMENTS

File::Type is built from a mime-magic file from cleancode.org. The original can be found at <http://cleancode.org/cgi-bin/viewcvs.cgi/email/mime-magic.mime?rev=1.1.1.1>.