Method: Minitar::PosixHeader.from_data

Defined in:
lib/minitar/posix_header.rb

.from_data(data) ⇒ Object

Creates a new PosixHeader from a BLOCK_SIZE-byte data buffer.



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# File 'lib/minitar/posix_header.rb', line 68

def from_data(data)
  fields = data.unpack(HEADER_UNPACK_FORMAT)
  name = fields.shift
  mode = fields.shift.oct
  uid = fields.shift.oct
  gid = fields.shift.oct
  size = parse_numeric_field(fields.shift)
  mtime = fields.shift.oct
  checksum = fields.shift.oct
  typeflag = fields.shift
  linkname = fields.shift
  magic = fields.shift
  version = fields.shift.oct
  uname = fields.shift
  gname = fields.shift
  devmajor = fields.shift.oct
  devminor = fields.shift.oct
  prefix = fields.shift

  empty = !data.each_byte.any?(&:nonzero?)

  new(
    name: name,
    mode: mode,
    uid: uid,
    gid: gid,
    size: size,
    mtime: mtime,
    checksum: checksum,
    typeflag: typeflag,
    magic: magic,
    version: version,
    uname: uname,
    gname: gname,
    devmajor: devmajor,
    devminor: devminor,
    prefix: prefix,
    empty: empty,
    linkname: linkname
  )
end