Object
A representation of a DNS name.
Creates a new DNS name from arg. arg can be:
returns arg. | |
String |
Creates a new Name. |
# File resolv.rb, line 1114
def self.create(arg)
case arg
when Name
return arg
when String
return Name.new(Label.split(arg), /\.\z/ =~ arg ? true : false)
else
raise ArgumentError.new("cannot interpret as DNS name: #{arg.inspect}")
end
end
True if this name is absolute.
# File resolv.rb, line 1137
def absolute?
return @absolute
end
Returns true if other is a subdomain.
Example:
domain = Resolv::DNS::Name.create("y.z") p Resolv::DNS::Name.create("w.x.y.z").subdomain_of?(domain) #=> true p Resolv::DNS::Name.create("x.y.z").subdomain_of?(domain) #=> true p Resolv::DNS::Name.create("y.z").subdomain_of?(domain) #=> false p Resolv::DNS::Name.create("z").subdomain_of?(domain) #=> false p Resolv::DNS::Name.create("x.y.z.").subdomain_of?(domain) #=> false p Resolv::DNS::Name.create("w.z").subdomain_of?(domain) #=> false
# File resolv.rb, line 1162
def subdomain_of?(other)
raise ArgumentError, "not a domain name: #{other.inspect}" unless Name === other
return false if @absolute != other.absolute?
other_len = other.length
return false if @labels.length <= other_len
return @labels[-other_len, other_len] == other.to_a
end
returns the domain name as a string.
The domain name doesn’t have a trailing dot even if the name object is absolute.
Example:
p Resolv::DNS::Name.create("x.y.z.").to_s #=> "x.y.z" p Resolv::DNS::Name.create("x.y.z").to_s #=> "x.y.z"
# File resolv.rb, line 1197
def to_s
return @labels.join('.')
end