如何修复不兼容的字符编码:UTF-8和ASCII-8BIT

问题出在'chap<“\xFF\xFF\xFF\xFF\xFF\xFF\xFF”'行。

chaps = []
ctoc = "toc1\x00"
ctoc << [3, chapters.size].pack("CC")
chapters.each_with_index do |ch, i|
  num = i+1
  title = ch[:title]
  description = ch[:description]
  link = ch[:link]

  ctoc << "ch#{num}\x00"

  chap = "ch#{num}\x00"
  chap << [ch[:start]*1000, ch[:end]*1000].pack("NN");
  chap << "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"

  title_tag = [title.encode("utf-16")].pack("a*");
  chap << "TIT2"
  chap << [title_tag.size+1].pack("N")
  chap << "\x00\x00\x01"
  chap << title_tag

  chaps << chap
end

# encoding: utf-8