re = /^(?<year>\d{4})[\-\.\/]?(?<month>0[1-9]|1[02])[\-\.\/]?(?<day>[0-2]\d|3[0-1])[ T]?(?<hour>[0-1]\d|2[0-3])[\:\.]?(?<minute>[0-5]\d)[\:\.]?(?<second>[0-5]\d) ?(?<offset>(?<offset_sign>[\-\+]*)(?<offset_hour>0[0-9]|1[0-2])[\:\.]?(?<offset_minute>[0-5]\d))/m
str = '--- SHOULD MATCH ---
20181215144545-06:00
2018-12-15T14:45:45 -06:00
2018-12-15 14:45:45 -06:00
2018.12.15T14.45.45 -06:00
2018.12.15T14.45.45-06.00
2018/12/15T14:45:45-06:00
201812151445450000
103212150000000000
103212151111111111
103212152222221222
--- SHOULD NOT MATCH ---
2018-13-15T14:45:45 -06:00
2018-12-60T14:45:45 -06:00
2018-12-15T24:45:45 -06:00
2018-12-15T14:60:45 -06:00
103212152222222222
103212152222221322'
# 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