From: Bertram Scharpf <lists@...>
Date: 2007-08-22T00:51:58+09:00
Subject: Re: Test if file is binary ?

Hi, 

Am Dienstag, 21. Aug 2007, 18:06:26 +0900 schrieb Bertram Scharpf:
>    class File
>      def binary?
>        while (b=f.read(256)) do
>          return true if b[ "\0"]
>        end
>      end
>    end

This is blunder, of course. Some better ones:

  def File.binary? name
    open name do |f|
      while (b=f.read(256)) do
        return true if b[ "\0"]
      end
    end
    false
  end

  def File.binary? name
    open name do |f|
      f.each_byte { |x|
        x.nonzero? or return true
      }
    end
    false
  end

Just to be corrrect.

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de