ffiruby-filemagic

A new implementation of the ancient ruby-filemagic gem (grub.ath.cx/filemagic/).

This version uses FFI to talk to the native library (JRuby friendly).

(Blurb from the original gem site follows)

What is FileMagic?

FileMagic is a Ruby binding to the magic(4) library, which you may know better as the file(1) command. The file command identifies the type of a file using, among other tests, a test for whether the file

begins with a certain magic number.

Install:

Make sure you have the magic(4) library installed. On OSX this can be done using MacPorts (www.macports.org/)

> sudo port install file > sudo gem sources -a gems.github.com > sudo gem install glongman-otv-ffiruby-filemagic

- Linux? should just work 
- Cygwin? no idea, never use it
- Windows? see above

Usage:

> irb >> require ‘ffi_file_magic’

> true

>> fm = FFIFileMagic.new(FFIFileMagic::MAGIC_MIME)

> #<FFIFileMagic:0x11a4d9c @cookie=#<Native Pointer address=0x13606f0>>

>> fm.file(‘rails.png’)

> true

> #<FFIFileMagic:0x11a4d9c @cookie=#<Native Pointer address=0x13606f0>>

> “image/png”