21 lines
543 B
Ruby
21 lines
543 B
Ruby
require 'mail'
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module Email
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def self.is_valid?(email)
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parser = Mail::RFC2822Parser.new
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parser.root = :addr_spec
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result = parser.parse(email)
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# Don't allow for a TLD by itself list (sam@localhost)
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# The Grammar is: (local_part "@" domain) / local_part ... need to discard latter
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result && result.respond_to?(:domain) && result.domain.dot_atom_text.elements.size > 1
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end
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def self.downcase(email)
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return email unless Email.is_valid?(email)
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email.gsub(/^(.+@{1})([^@]+)$/) { $1 + $2.downcase }
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end
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end
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