re = /(?<LanguageTag>(?<langtag>(?<language>(?:[a-z]{2,3}(?<extlang>(?:\-[a-z]{3}){0,3}))|[a-z]{4}|(?<subtag>[a-z]{5,8}))(?:\-(?<script>[a-z]{4}))?(?:\-(?<region>[a-z]{2}|[0-9]{3}))?(?:\-(?<variant>[0-9a-z]{5,8}|[0-9][0-9a-z]{3}))*(?:\-(?<extension>(?<singleton>[a-wy-z0-9])(?:\-[0-9a-z]{2,8})+))*)|(?<privateuse>[xX](?:\-[0-9a-z]{1,8})+)|(?<grandfathered>[a-z]{1,3}(?:\-[0-9a-z]{2,8}){1,2}))/mi
str = ''
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html