Ruby regexp detect CJK character
#encoding: UTF-8
class String
def contains_cjk?
!!(self =~ /\p{Han}|\p{Katakana}|\p{Hiragana}|\p{Hangul}/)
end
end
strings= ['中国国際放送局', '광고 프로그램', '真是牛阿', 'This is english.']
strings.each{|s| puts s.contains_cjk?}Result will be:
true true true false