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Dir : ~/usr/share/doc/perl-File-LibMagic-1.00/

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NAME
    File::LibMagic - Determine MIME types of data or files using libmagic

VERSION
    version 1.00

SYNOPSIS
      use File::LibMagic;

my $magic = File::LibMagic->new();

# prints a description like "ASCII text"
      print $magic->describe_filename('path/to/file');
      print $magic->describe_contents('this is some data');

# Prints a MIME type like "text/plain; charset=us-ascii"
      print $magic->checktype_filename('path/to/file');
      print $magic->checktype_contents('this is some data');

DESCRIPTION
    The "File::LibMagic" is a simple perl interface to libmagic from the
    file package (version 4.x or 5.x).

API
    This module provides an object-oriented API with the following methods:

File::LibMagic->new()
    Creates a new File::LibMagic object.

Using the object oriented interface provides an efficient way to
    repeatedly determine the magic of a file.

Each File::LibMagic object loads the magic database independently of
    other File::LibMagic objects, so you may want to share a single object
    across many modules as a singleton.

This method takes an optional argument containing a path to the magic
    file. If the file doesn't exist this will throw an exception (but only
    with libmagic 4.17+).

If you don't pass an argument, it will throw an exception if it can't
    find any magic files at all.

$magic->checktype_contents($data)
    Returns the MIME type of the data given as the first argument. The data
    can be passed as a plain scalar or as a reference to a scalar.

This is the same value as would be returned by the "file" command with
    the "-i" switch.

$magic->checktype_filename($filename)
    Returns the MIME type of the given file.

This is the same value as would be returned by the "file" command with
    the "-i" switch.

$magic->describe_contents($data)
    Returns a description (as a string) of the data given as the first
    argument. The data can be passed as a plain scalar or as a reference to
    a scalar.

This is the same value as would be returned by the "file" command with
    no switches.

$magic->describe_filename($filename)
    Returns a description (as a string) of the given file.

This is the same value as would be returned by the "file" command with
    no switches.

DEPRECATED APIS
    This module offers two different procedural APIS based on optional
    exports, the "easy" and "complete" interfaces. These APIS are now
    deprecated. I strongly recommend you use the OO interface. It's simpler
    than the complete interface and more efficient than the easy interface.

The "easy" interface
    This interface is exported by:

use File::LibMagic ':easy';

This interface exports two subroutines:

*   MagicBuffer($data)

Returns the description of a chunk of data, just like the
        "describe_contents" method.

*   MagicFile($filename)

Returns the description of a file, just like the "describe_filename"
        method.

The "complete" interface
    This interface is exported by:

use File::LibMagic ':easy';

This interface exports several subroutines:

*   magic_open($flags)

This subroutine opens creates a magic handle. See the libmagic man
        page for a description of all the flags. These are exported by the
        ":complete" import.

my $handle = magic_open(MAGIC_MIME);

*   magic_load($handle, $filename)

This subroutine actually loads the magic file. The $filename
        argument is optional. There should be a sane default compiled into
        your "libmagic" library.

*   magic_buffer($handle, $data)

This returns information about a chunk of data as a string. What it
        returns depends on the flags you passed to "magic_open", a
        description, a MIME type, etc.

*   magic_file($handle, $filename)

This returns information about a file as a string. What it returns
        depends on the flags you passed to "magic_open", a description, a
        MIME type, etc.

*   magic_close($handle)

Closes the magic handle.

EXCEPTIONS
    This module can throw an exception if you system runs out of memory when
    trying to call "magic_open" internally.

SUPPORT
    Please submit bugs to the CPAN RT system at
    http://rt.cpan.org/NoAuth/Bugs.html?Dist=File-LibMagic or via email at
    bug-file-libmagic@rt.cpan.org.

BUGS
    This module is totally dependent on the version of file on your system.
    It's possible that the tests will fail because of this. Please report
    these failures so I can make the tests smarter. Please make sure to
    report the version of file on your system as well!

DEPENDENCIES/PREREQUISITES
    This module requires file 4.x or file 5x and the associated libmagic
    library and headers (http://darwinsys.com/file/).

RELATED MODULES
    Andreas created File::LibMagic because he wanted to use libmagic (from
    file 4.x) File::MMagic only worked with file 3.x.

File::MimeInfo::Magic uses the magic file from freedesktop.org which is
    encoded in XML, and is thus not the fastest approach. See
    <http://mail.gnome.org/archives/nautilus-list/2003-December/msg00260.htm
    l> for a discussion of this issue.

File::Type uses a relatively small magic file, which is directly hacked
    into the module code. It is quite fast but the database is quite small
    relative to the file package.

AUTHORS
    *   Andreas Fitzner

*   Michael Hendricks <michael@ndrix.org>

*   Dave Rolsky <autarch@urth.org>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2013 by Andreas Fitzner, Michael
    Hendricks, and Dave Rolsky.

This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.