MAGICFFI is a CFFI interface to libmagic(3), the file type determination library using “magic” numbers.

Homepage is http://common-lisp.net/project/magicffi.

Download

To check out the git repository, run:

$ git clone git://github.com/dochang/magicffi.git

To browse code online, go to:

http://github.com/dochang/magicffi

You can also download the repo’s snapshot.

Zipball

http://github.com/dochang/magicffi/zipball/master

Tarball

http://github.com/dochang/magicffi/tarball/master

Installation

MAGICFFI depends on the following lisp libraries:

  • CFFI

  • CL-PPCRE (used by the internal flags generator)

The following system packages are also required:

  • libmagic-dev

  • libc6-dev

  • gcc

You have to install them on your system before loading magicffi.

Tutorial

> (asdf:oos 'asdf:load-op :magicffi)
> (use-package :magicffi)
> (with-open-magic (magic '(:mime-type :symlink))
    (magic-load magic)
    (magic-file magic #P"magicffi.asd"))
"text/plain"

Documentation

All external symbols of the package MAGICFFI are listed in package.lisp. Check out their docstrings for help.

Magic Flags

You can use either constants or keyword list as magic flags. I.e.,

(magic-open (logxor +magic-mime-type+ +magic-symlink+))

is equivalent to

(magic-open '(:mime-type :symlink))

The constant name and keyword name of a flag are based on its C name. See the following table for the pattern:

Table 1. Magic flags naming convension

C name

Lisp constant

Lisp keyword

MAGIC_NONE

+MAGIC-NONE+

:NONE

All constant names are exported.

Support and mailing lists

If you have questions, bug reports, feature requests and patches, send your email to the magicffi-devel mailing list. Please visit:

http://common-lisp.net/cgi-bin/mailman/listinfo/magicffi-devel