Ruby grep binary files?

Question

I have been using this so far

system 'strings binary-file.dmp | grep search_string'

Is there something more "Ruby like"?

Answer 1

Here is my quick-and-dirty strings.rb:

#! /usr/bin/ruby

ARGV.each do |filename|
    File.open filename,"rb" do |f|
        f.each_line do |line|
            line.scan(/([\x32-\x7e]{4,})/).each {|a| puts a[0]}
        end
    end
end

This is not a work of art or anything - it only works in straight US-ASCII. The regex bascially means "all groups of printable US-ASCII characters of size 4 charaters or more". This is essentially what strings(1) does.