Module: Omnizip::Formats::Ole::Constants

Included in:

AllocationTable, Dirent, Header, Storage

Defined in:

lib/omnizip/formats/ole/constants.rb

Overview

OLE format constants

Constants for the OLE compound document format including magic bytes, special markers, and format-related values.

Constant Summary

MAGIC =

OLE magic signature (D0CF11E0A1B11AE1)

"\xd0\xcf\x11\xe0\xa1\xb1\x1a\xe1".b

HEADER_SIZE =

Header size in bytes

76

HEADER_BLOCK_SIZE =

Header block size (always 512)

512

AVAIL =

Allocation table special markers

0xffffffff

EOC =

Free block

0xfffffffe

BAT =

End of chain

0xfffffffd

META_BAT =

Block stores BAT data

0xfffffffc

EOT =

End of tree marker for dirents

0xffffffff

DEFAULT_THRESHOLD =

Default threshold for small block vs big block (4096 bytes)

4096

BYTE_ORDER_LE =

Byte order marker for little-endian

"\xfe\xff".b

DEFAULT_BIG_BLOCK_SHIFT =

Default block sizes

9

DEFAULT_SMALL_BLOCK_SHIFT =

512 bytes

6

DIRENT_TYPES =

Dirent types

{
  0 => :empty,
  1 => :dir,
  2 => :file,
  5 => :root,
}.freeze

DIRENT_COLORS =

Dirent colors for red-black tree

{
  0 => :red,
  1 => :black,
}.freeze

DIRENT_SIZE =

Dirent size in bytes

128

MAX_NAME_LENGTH =

Maximum name length in UTF-16 characters (including null terminator)

32