remove_utf8_header.rb

class String
  def starts_with?(prefix)
    prefix.respond_to?(:to_str) && self[0, prefix.length] == prefix
  end
end

def delete_lines_from_file(filename)
  line_arr = File.readlines(filename)
  line_arr.delete_at(0)
  line_arr.delete_at(0) if line_arr.first == "\n"

  File.open(filename, "w") do |f|
    line_arr.each{|line| f.puts(line)}
  end
end

def remove_encoding_head(filename)
  if File.new(filename).gets.strip == '# coding: UTF-8'
    delete_lines_from_file(filename)
  end
end

ruby_files = Dir.glob('/home/lvargas/projects/emergia/**/*.rb').select{ |e| File.file?(e) }

ruby_files.each do |filename|
  remove_encoding_head(filename)
end

p 'Remove enconding head has finished'