io.starter.formats.LEO

Class LEOHeader

java.lang.Object

io.starter.formats.LEO.LEOHeader

All Implemented Interfaces:

Serializable

public class LEOHeader
extends Object
implements Serializable

Header record containing information on the Storage records in the LEOFile. Header (block 1) -- 512 (0x200) bytes Field Description Offset Length Default value or const FILETYPE Magic number identifying this as a LEO filesystem. 0x0000 Long 0xE11AB1A1E011CFD0 UK1 Unknown constant 0x0008 Integer 0 UK2 Unknown Constant 0x000C Integer 0 UK3 Unknown Constant 0x0014 Integer 0 UK4 Unknown Constant (revision?) 0x0018 Short 0x003B UK5 Unknown Constant (version?) 0x001A Short 0x0003 UK6 Unknown Constant 0x001C Short -2 LOG_2_BIG_BLOCK_SIZE Log, base 2, of the big block size 0x001E Short 9 (2 ^ 9 = 512 bytes) LOG_2_SMALL_BLOCK_SIZE Log, base 2, of the miniFAT size 0x0020 Integer 6 (2 ^ 6 = 64 bytes) UK7 Unknown Constant 0x0024 Integer 0 UK8 Unknown Constant 0x0028 Integer 0 FAT_COUNT Number of elements in the FAT array 0x002C Integer required PROPERTIES_START Block index of the first block of the property table 0x0030 Integer required UK9 Unknown Constant 0x0034 Integer 0 UK10 Unknown Constant 0x0038 Integer 0x00001000 MINIFAT_START Block index of first big block containing the mini FATallocation table (MINIFAT) 0x003C Integer -2 UK11 Unknown Constant 0x0040 Integer 1 extraDIFAT Block index of the first block in the Extended Block Allocation Table 0x0044 Integer -2 extraDIFATCount Number of elements in the Extended File Allocation Table (to be added to the FAT) 0x0048 Integer 0 FAT_ARRAY Array of block indicies constituting the File Allocation Table (FAT) 0x004C, 0x0050, 0x0054 ... 0x01FC Integer[ ] -1 for unused elements, at least first element must be filled. N/A Header block data not otherwise described in this table N/A

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	HEADER_SIZE
static byte[]	majick

Constructor Summary

Constructors

Constructor and Description
LEOHeader()

Method Summary

Modifier and Type	Method and Description
ByteBuffer	getBytes() get the Header bytes
int[]	getDIFAT() get the FAT Sectors (sectors which hold the FAT or the chain that references all sectors in the file)
int	getExtraDIFATStart() get the position of the extra DIFAT sector start
int	getMiniFATStart() get the position of the miniFAT Start Block
int	getNumExtraDIFATSectors() get the number of the Extended DIFAT sectors
int	getRootStartPos() get the position of the Root Storage/1st Directory
protected boolean	init() initialize from existing data
protected boolean	init(ByteBuffer dta) initialize the leo doc header

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HEADER_SIZE

public static final int HEADER_SIZE

See Also:

Constant Field Values

majick

public static final byte[] majick

Constructor Detail

LEOHeader

public LEOHeader()

Method Detail

init

protected boolean init()

initialize from existing data

init

protected boolean init(ByteBuffer dta)

initialize the leo doc header

getNumExtraDIFATSectors

public int getNumExtraDIFATSectors()

get the number of the Extended DIFAT sectors

getExtraDIFATStart

public int getExtraDIFATStart()

get the position of the extra DIFAT sector start

getRootStartPos

public int getRootStartPos()

get the position of the Root Storage/1st Directory

getMiniFATStart

public int getMiniFATStart()

get the position of the miniFAT Start Block

getDIFAT

public int[] getDIFAT()

get the FAT Sectors (sectors which hold the FAT or the chain that references all sectors in the file)

getBytes

public ByteBuffer getBytes()

get the Header bytes