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module Util
# Splits the rightmost part of a string using '::' as delimiter
# Returns an array of both parts or nil if either is empty.
# An empty rightmost part is ignored and converted as 'string::' => 'string'
#
# Examples:
# "foo" -> ["foo", nil]
# "foo::" -> ["foo", nil]
# "foo::bar" -> ["foo", "bar"]
# "foo::bar::" -> ["foo", "bar"]
# "::foo" -> [nil, "foo"]
# "::foo::" -> [nil, "foo"]
# "foo::bar::baz" -> ["foo::bar", "baz"]
# "foo::bar::baz::" -> ["foo::bar", "baz"]
#
def self.split_domain(str)
left, right = nil, nil
unless str.nil?
left, delimiter, right = str.gsub(/::$/, '').rpartition('::')
left, right = right, nil if delimiter.empty?
left = nil if left.empty?
end
return [left, right]
end
end
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