io.starter.formats.LEO

Class StorageTable

java.lang.Object

io.starter.formats.LEO.StorageTable

All Implemented Interfaces:

Serializable

public class StorageTable
extends Object
implements Serializable

The directory system for an LEO file Extentech Inc.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	BIGSTORAGE_SIZE
static int	DIRECTORY_SIZE
static int	TABLE_SIZE

Constructor Summary

Constructors

Constructor and Description
StorageTable()

Method Summary

Modifier and Type	Method and Description
void	close() clear out object references in prep for closing workbook
Storage	createStorage(String name, int type, int insertIdx) Create a new Storage and add to the directory array NOTE: add any associated data separately
void	DEBUG()
Storage	getChild(String name) get the child directory (storage or stream) of the named storage
Storage	getDirectoryByName(String name) get the directory by name.
int	getDirectoryStreamID(String name) returns the Stream ID of the named directory, or -1 if not found
Storage	getNext(String name) get the next directory (storage or stream) of the named storage
int	getNumDirectories() return the number of existing directories
Storage	getPrevious(String name) get the previous directory (storage or stream) of the named storage
void	init(ByteBuffer dta, LEOHeader h, List blockvect, int[] FAT) initialize the directory entry array
void	initDirectories(List blockvect, int[] FAT)
List	initMiniStream(List blockvect, int[] FAT) // whenever a stream is shorter than a specific length // it is stored as a short-stream or ministream.
static void	writeitout(List blocks, String name) write out the directory bytes for debugging

Methods inherited from class java.lang.Object

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

Field Detail

TABLE_SIZE

public static final int TABLE_SIZE

See Also:

Constant Field Values

DIRECTORY_SIZE

public static final int DIRECTORY_SIZE

See Also:

Constant Field Values

BIGSTORAGE_SIZE

public static final int BIGSTORAGE_SIZE

See Also:

Constant Field Values

Constructor Detail

StorageTable

public StorageTable()

Method Detail

close

public void close()

clear out object references in prep for closing workbook

init

public void init(ByteBuffer dta,
                 LEOHeader h,
                 List blockvect,
                 int[] FAT)

initialize the directory entry array

getNumDirectories

public int getNumDirectories()

return the number of existing directories

Returns:

createStorage

public Storage createStorage(String name,
                             int type,
                             int insertIdx)

Create a new Storage and add to the directory array
NOTE: add any associated data separately

Parameters:

name - Storage name - must be unique

type - Storage Type - 1= storage 2= stream 5= root 0=unknown or unallocated

insertIdx - id where to insert, or -1 to insert at end

Returns:

initDirectories

public void initDirectories(List blockvect,
                            int[] FAT)

initMiniStream

public List initMiniStream(List blockvect,
                           int[] FAT)

// whenever a stream is shorter than a specific length // it is stored as a short-stream or ministream. ministreamentries do not directly // use sectors to store their data, but are all embedded in a specific // internal control stream. // first used sector is obtained from the root store ==> miniFAT chain // it's secID chain is contained in the miniFAT // The data used by all of the short-sectors container stream are concatenated // in order of the secID chain. There is no header, so the first // mini sector (secId= 0) is always located at position 0 in the mini Stream // The miniFAT is the same as the FAT except the secID chains refer // to miniSectors (64 bytes) rather than regular sectors or blocks (512 bytes)

getDirectoryByName

public Storage getDirectoryByName(String name)
                           throws StorageNotFoundException

get the directory by name. throws StorageNotFoundException if not found.

Throws:

StorageNotFoundException

getDirectoryStreamID

public int getDirectoryStreamID(String name)
                         throws StorageNotFoundException

returns the Stream ID of the named directory, or -1 if not found

Parameters:

name -

Returns:

Throws:

StorageNotFoundException

getChild

public Storage getChild(String name)
                 throws StorageNotFoundException

get the child directory (storage or stream) of the named storage

Parameters:

name -

Returns:

Storage or null

Throws:

StorageNotFoundException

getNext

public Storage getNext(String name)
                throws StorageNotFoundException

get the next directory (storage or stream) of the named storage

Parameters:

name -

Returns:

Storage or null

Throws:

StorageNotFoundException

getPrevious

public Storage getPrevious(String name)
                    throws StorageNotFoundException

get the previous directory (storage or stream) of the named storage

Parameters:

name -

Returns:

Storage or null

Throws:

StorageNotFoundException

writeitout

public static final void writeitout(List blocks,
                                    String name)

write out the directory bytes for debugging

DEBUG

public void DEBUG()