From: Daniel Berger <djberg96@...>
Date: 2007-07-19T23:10:37+09:00
Subject: Re: Validating an Image file is an image file



On Jul 19, 7:06 am, Daniel Berger <djber...@gmail.com> wrote:
> On Jul 19, 5:05 am, "Raf Coremans" <rra...@gmail.com> wrote:
>
> > 2007/7/18, Daniel Berger <djber...@gmail.com>:
> > <snip>
>
> > >    def self.jpg?(file)
> > >       IO.read(file, 10) == "\377\330\377\340\000\020JFIF" &&
> > > File.extname(file).downcase == '.jpg'
> > >    end
>
> > Ack! The proper abbreviation, and thus also the filename extension, is
> > 'jpeg'. 'jpg' is an abomination introduced by the same people who introduced
> > the *shudder* '.htm' filename extension.
>
> Be that as it may, you will see both extensions in practice. So, the
> code should probably be refactored to be:
>
> def self.jpeg?(file)
>    IO.read(file, 10) == "\377\330\377\340\000\020JFIF" && ['.jpg',
> '.jpeg'].include?(File.extname(file).downcase)
> end
>
> alias jpg? jpeg?

Whoops, that should be:

class << self
   alias jpg? jpeg?
end

Regards,

Dan