require "mail"

class String
def forceUTF8Encoding
    if RUBY_VERSION < '1.9.0'
      # Ruby 1.8 really only support 7 bit ASCII well. Only do the line-end
      # clean-up.
      gsub(/\r\n/, "\n")
    else
      begin
        # Ensure that the text has LF line ends and is UTF-8 encoded.
        force_encoding("UTF-8") # Ligne ajouté par FNI
        encode('UTF-8', :universal_newline => true)
      rescue
        # The encoding of the String is broken. Find the first broken line and
        # report it.
        lineCtr = 1
        each_line do |line|
          begin
            print lineCtr ; print "\n" 
            if lineCtr == 52
              print "ici"
            end
            line.encode('UTF-8')
          rescue
           line = line.encode('UTF-8', :invalid => :replace,
                                       :undef => :replace, :replace => '<?>')
            raise Encoding::UndefinedConversionError,
                  "UTF-8 encoding error in line #{lineCtr}: #{line}"
          end
          lineCtr += 1
        end
      end
    end
end
end

mail = Mail.read("testrb.eml.txt")
mail.attachments.each do | attachment |\
  filename = attachment.filename
  print "Found " + filename
  #File.open("toto.tji", "w+b", 0644) {|f| f.write attachment.decoded}\
end
# print "mail body decoded:"
# print mail.body.decoded
print "attachment body decoded:\n"
sheet=mail.attachments[0].body.decoded
print sheet
print "Force UTF8\n"
print sheet.forceUTF8Encoding