class Resolv::DNS

# File lib/resolv.rb, line 338
def initialize(config_info=nil)
  @mutex = Thread::Mutex.new
  @config = Config.new(config_info)
  @initialized = nil
end

# File lib/resolv.rb, line 301
def self.open(*args)
  dns = new(*args)
  return dns unless block_given?
  begin
    yield dns
  ensure
    dns.close
  end
end

# File lib/resolv.rb, line 372
def close
  @mutex.synchronize {
    if @initialized
      @initialized = false
    end
  }
end

# File lib/resolv.rb, line 410
def each_address(name)
  if use_ipv6?
    each_resource(name, Resource::IN::AAAA) {|resource| yield resource.address}
  end
  each_resource(name, Resource::IN::A) {|resource| yield resource.address}
end

# File lib/resolv.rb, line 464
def each_name(address)
  case address
  when Name
    ptr = address
  when IPv4, IPv6
    ptr = address.to_name
  when IPv4::Regex
    ptr = IPv4.create(address).to_name
  when IPv6::Regex
    ptr = IPv6.create(address).to_name
  else
    raise ResolvError.new("cannot interpret as address: #{address}")
  end
  each_resource(ptr, Resource::IN::PTR) {|resource| yield resource.name}
end

# File lib/resolv.rb, line 522
def each_resource(name, typeclass, &proc)
  fetch_resource(name, typeclass) {|reply, reply_name|
    extract_resources(reply, reply_name, typeclass, &proc)
  }
end

# File lib/resolv.rb, line 386
def getaddress(name)
  each_address(name) {|address| return address}
  raise ResolvError.new("DNS result has no information for #{name}")
end

# File lib/resolv.rb, line 397
def getaddresses(name)
  ret = []
  each_address(name) {|address| ret << address}
  return ret
end

# File lib/resolv.rb, line 440
def getname(address)
  each_name(address) {|name| return name}
  raise ResolvError.new("DNS result has no information for #{address}")
end

# File lib/resolv.rb, line 451
def getnames(address)
  ret = []
  each_name(address) {|name| ret << name}
  return ret
end

# File lib/resolv.rb, line 503
def getresource(name, typeclass)
  each_resource(name, typeclass) {|resource| return resource}
  raise ResolvError.new("DNS result has no information for #{name}")
end

# File lib/resolv.rb, line 512
def getresources(name, typeclass)
  ret = []
  each_resource(name, typeclass) {|resource| ret << resource}
  return ret
end

# File lib/resolv.rb, line 355
def timeouts=(values)
  @config.timeouts = values
end