re = /.*\\packages\\([^\\]*?)?\.(([\d]+(\.[\d]+){2,})(-[^\\\-\+\.]+(\.[^\\\-\+\.]+)*?)?(\+[^\\\-\+\.]+(\.[^\\\-\+\.]+)*?)?)\\.*/
str = '..\\..\\..\\packages\\SpecFlow.CustomPlugin.75-57-2.165d484.26546.75274.772570-test.12648.sdfg+test.sdg.1515\\lib\\net45\\Gherkin.dll'
# 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