Method: Zip::CentralDirectory#get_e_o_c_d

Defined in:
lib/zip/central_directory.rb

#get_e_o_c_d(io) ⇒ Object

:nodoc:

Raises:



89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
 
# File 'lib/zip/central_directory.rb', line 89

def get_e_o_c_d(io) #:nodoc:
  begin
    io.seek(-MAX_END_OF_CENTRAL_DIRECTORY_STRUCTURE_SIZE, IO::SEEK_END)
  rescue Errno::EINVAL
    io.seek(0, IO::SEEK_SET)
  end
  buf      = io.read
  sigIndex = buf.rindex([END_OF_CENTRAL_DIRECTORY_SIGNATURE].pack('V'))
  raise ZipError, "Zip end of central directory signature not found" unless sigIndex
  buf = buf.slice!((sigIndex + 4)..(buf.bytesize))

  def buf.read(count)
    slice!(0, count)
  end

  buf
end