re = /^\/(?<page>quizzes)(?:\/(?<subpage>[\w-]+)?)?(?:\.xml)$/m
str = '# EXPECTED URL MATCHES
/quizzes
/quizzes/
/quizzes/food
/quizzes/food/
/quizzes.xml
/quizzes/food.xml
# EXPECTED URL NON-MATCHES
/quizzes2
/quizzes.xml/
/quizzes/food.xml/
/investigations
/investigations/foo
/jobs/something
/foo/bar
/jp/index
/about
/press
/uk/shopping
/esp/shopping
/shopping
/jp/shopping
/jp/quizzes
'
# 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