Class: Zip::ExtraField::Generic

Inherits:
Object
  • Object
show all
Defined in:
lib/zip/extra_field/generic.rb

Overview

:nodoc:

Direct Known Subclasses

AES, IUnix, NTFS, OldUnix, UniversalTime, Unknown, Zip64

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.name ⇒ Object 



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# File 'lib/zip/extra_field/generic.rb', line 11

def self.name
  @name ||= to_s.split('::').last.downcase.to_sym
end

.register_map ⇒ Object 



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# File 'lib/zip/extra_field/generic.rb', line 5

def self.register_map
  return unless const_defined?(:HEADER_ID)

  ::Zip::ExtraField::ID_MAP[const_get(:HEADER_ID)] = self
end

Instance Method Details

#initial_parse(binstr) ⇒ Object

return field [size, content] or false



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# File 'lib/zip/extra_field/generic.rb', line 16

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

#suppress? ⇒ Boolean

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.

Returns:

  • (Boolean) 


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# File 'lib/zip/extra_field/generic.rb', line 29

def suppress?
  true
end

#to_c_dir_bin ⇒ Object 



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# File 'lib/zip/extra_field/generic.rb', line 38

def to_c_dir_bin
  s = pack_for_c_dir
  (self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v')) << s
end

#to_local_bin ⇒ Object 



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# File 'lib/zip/extra_field/generic.rb', line 33

def to_local_bin
  s = pack_for_local
  (self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v')) << s
end