mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 06:29:30 +08:00
21 lines
543 B
Ruby
21 lines
543 B
Ruby
require 'mail'
|
|
|
|
module Email
|
|
|
|
def self.is_valid?(email)
|
|
parser = Mail::RFC2822Parser.new
|
|
parser.root = :addr_spec
|
|
result = parser.parse(email)
|
|
|
|
# Don't allow for a TLD by itself list (sam@localhost)
|
|
# The Grammar is: (local_part "@" domain) / local_part ... need to discard latter
|
|
result && result.respond_to?(:domain) && result.domain.dot_atom_text.elements.size > 1
|
|
end
|
|
|
|
def self.downcase(email)
|
|
return email unless Email.is_valid?(email)
|
|
email.gsub(/^(.+@{1})([^@]+)$/) { $1 + $2.downcase }
|
|
end
|
|
|
|
end
|