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# frozen_string_literal: true
module Zip
class ExtraField::Generic # :nodoc:
def self.register_map
return unless const_defined?(:HEADER_ID)
::Zip::ExtraField::ID_MAP[const_get(:HEADER_ID)] = self
end
def self.name
@name ||= to_s.split('::').last.downcase.to_sym
end
# return field [size, content] or false
def initial_parse(binstr)
return false unless binstr
if binstr[0, 2] != self.class.const_get(:HEADER_ID)
warn 'WARNING: weird extra field header ID. Skip parsing it.'
return false
end
[binstr[2, 2].unpack1('v'), binstr[4..]]
end
# Default strategy is to suppress all extra fields if we're asked to.
# Specific extra field types can override this if they need to be kept.
def suppress?
true
end
def to_local_bin
s = pack_for_local
(self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v')) << s
end
def to_c_dir_bin
s = pack_for_c_dir
(self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v')) << s
end
end
end
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