Class: Zip::ExtraField::IUnix

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

Overview

Info-ZIP Extra for UNIX uid/gid

Constant Summary collapse

HEADER_ID = 
"Ux"

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Generic

#initial_parse, name, register_map, #to_c_dir_bin, #to_local_bin

Constructor Details

#initialize(binstr = nil) ⇒ IUnix

Returns a new instance of IUnix.



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# File 'lib/zip/extra_field/unix.rb', line 7

def initialize(binstr = nil)
  @uid = 0
  @gid = 0
  binstr and merge(binstr)
end

Instance Attribute Details

#gid ⇒ Object

Returns the value of attribute gid.



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# File 'lib/zip/extra_field/unix.rb', line 13

def gid
  @gid
end

#uid ⇒ Object

Returns the value of attribute uid.



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# File 'lib/zip/extra_field/unix.rb', line 13

def uid
  @uid
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/zip/extra_field/unix.rb', line 25

def ==(other)
  @uid == other.uid && @gid == other.gid
end

#merge(binstr) ⇒ Object 



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# File 'lib/zip/extra_field/unix.rb', line 15

def merge(binstr)
  return if binstr.empty?
  size, content = initial_parse(binstr)
  # size: 0 for central directory. 4 for local header
  return if (!size || size == 0)
  uid, gid = content.unpack("vv")
  @uid     ||= uid
  @gid     ||= gid
end

#pack_for_c_dir ⇒ Object 



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

def pack_for_c_dir
  ''
end

#pack_for_local ⇒ Object 



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

def pack_for_local
  [@uid, @gid].pack("vv")
end