Class: Resolv::DNS::Name
Relationships & Source Files | |
Inherits: | Object |
Defined in: | lib/resolv.rb |
Overview
A representation of a ::Resolv::DNS name.
Class Method Summary
-
.create(arg)
Creates a new ::Resolv::DNS name from
arg
.
Instance Attribute Summary
-
#absolute? ⇒ Boolean
readonly
True if this name is absolute.
Instance Method Summary
-
#subdomain_of?(other) ⇒ Boolean
Returns true if
other
is a subdomain. -
#to_s
returns the domain name as a string.
Class Method Details
.create(arg)
Creates a new ::Resolv::DNS name from arg
. arg
can be:
- Name
-
returns
arg
. - String
-
Creates a new
Name
.
Instance Attribute Details
#absolute? ⇒ Boolean
(readonly)
True if this name is absolute.
# File 'lib/resolv.rb', line 1286
def absolute? return @absolute end
Instance Method Details
#subdomain_of?(other) ⇒ Boolean
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 'lib/resolv.rb', line 1312
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
#to_s
# File 'lib/resolv.rb', line 1347
def to_s return @labels.join('.') end