Cregexp
Cregexp is a library of commonly used regular expressions written in ruby.
Examples
Current Regexps
Cregexp.url # /(^$)|(^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$)/ix
Cregexp.email # /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i
Cregexp.ip # /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
Cregexp.hex # /^#?([a-f0-9]{6}|[a-f0-9]{3})$/
Cregexp.image # /.png|.jpg|.jpeg|.gif|.bmp|.tiff|.PNG|.JPG|.JPEG|.GIF|.BMP|.TIFF$/Matching
Cregexp.match("http://www.example.com", :url) # true
Cregexp.match("http://invalid", :url) # false
Cregexp.match("192.168.0.1", :ip) # true
Cregexp.match("256.255.255.255", :ip) # falseUsing Cregexp in Rails 3.x
Add this to your app's Gemfile:
gem "cregexp"That's It! Now Use it in a model for easy validations:
class Image < ActiveRecord::Base
validates_format_of :file, :format => Cregexp.image
...
end