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Class for email addresses / regex for splitting and checking
Strings and Regular Expressions example from a Well House Consultants training course
More on Strings and Regular Expressions [link]
Source code: pareea Module: R109
# Regular expressions for email addresses class Email def initialize(address) @raw = address.strip @valid = nil if @raw =~ /(\S+)@(\S+)/ @domain = $2 @user = $1 @domparts = splitdomain(@domain) @valid = 1 if @domparts end end def splitdomain(dom) domp = dom.split(".") # Look for errors! return nil if domp.length < 2 domp.each do |dnp| return nil if ! (dnp.downcase =~ /^[-a-z0-9]+$/) end return nil if domp[-1].length < 2 or domp[-1].length > 6 return nil unless domp[-1].downcase =~ /^[a-z]+$/ return domp end def to_s if @valid return "#{@domain} and #{@user} #{@domparts.join("!")}" else return "INVALID -> #{@raw}" end end end if __FILE__ == $0 sample = ["graham@sheepbingo.co.uk" , "graham123@wellho.com" , "404, The Spa, Melksham", "graham@wizard", ",@123test.com" , "ship@shape.rectangle" , "j.smith+r.jones@alias.smith.net"] tests = [] # create an array of objects sample.each do |emma| tests.push Email.new(emma) end # Print out the details of each object tests.each do |emma| puts emma end end __END__ Sample output: wizard:r11 graham$ ruby pareea sheepbingo.co.uk and graham sheepbingo!co!uk wellho.com and graham123 wellho!com INVALID -> 404, The Spa, Melksham INVALID -> graham@wizard 123test.com and , 123test!com INVALID -> ship@shape.rectangle alias.smith.net and j.smith+r.jones alias!smith!net wizard:r11 graham$ Learn about this subject
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