Camel case a string ( removing accents ) (See related posts)

# input str = " j'ai écris l'œuvre de ma vie "
# output str :"JAiEcrisLOeuvreDeMaVie"

accents = { ['á','à','â','ä','ã','Ã','Ä','Â','À'] => 'a',
  ['é','è','ê','ë','Ë','É','È','Ê'] => 'e',
  ['í','ì','î','ï','I','Î','Ì'] => 'i',
  ['ó','ò','ô','ö','õ','Õ','Ö','Ô','Ò'] => 'o',
  ['œ'] => 'oe',
  ['ß'] => 'ss',
  ['ú','ù','û','ü','U','Û','Ù'] => 'u'
  }
accents.each do |ac,rep|
  ac.each do |s|
    str.gsub!(s, rep)
  end
end
str.gsub!(/[^a-zA-Z_\- ]/," ")
str = " " + str.split.join(" ")
str.gsub!(/ (.)/) { $1.upcase }