re = /^CASE \d+:\r?\n-+[^\S\r\n]*(?:\r?\n(?!Drop Flow:).*)*\r?\n(Drop Flow: (TRUE|FALSE))[^\S\r\n]*(?:\r?\n(?!-).*)*\r?\n-/m
str = 'CASE 1:
----------------------------------
Drop Pack: FALSE
Drop Flow: FALSE
----------------------------------
CASE 2:
----------------------------------
Drop Flow: TRUE
Fail Open: FALSE
Fail Close: FALSE
----------------------------------
CASE 3:
----------------------------------
Drop Flow: FALSE '
# 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