src.rb

def filter_line(line)
    line.gsub!(/\x0f/, '')
    line.gsub!(/\x03\d?\d?/, '')
    line.gsub!(/\x02/, '')
    line
end

def filter_file(name)
    File.read(name).each_line.map{ |line| filter_line line }
end

def work_on_file(name)
    File.write('out.log', filter_file(name).join("\n"))
end

def use_stdin
    ARGF.each_line do |line|
        print filter_line line
    end
end

if(ARGV.size == 1)
    work_on_file ARGV[0]
else
    use_stdin
end