rossi.fstools.fs
Class FsUtils

java.lang.Object
  rossi.fstools.fs.FsUtils

public class FsUtils

extends java.lang.Object

Utility class for converting numbers from on-disk format.

Field Summary

static boolean

bigEndian Controls endian-ness.

Constructor Summary

FsUtils()

Method Summary

static int	getS16(byte[] buffer, int offset) Read a 16 bit signed number off the disk.
static long	getS32(byte[] buffer, int offset) Read a 32 bit signed number off the disk.
static long	getS64(byte[] buffer, int offset) This is the same as getU64().
static int	getU16(byte[] buffer, int offset) Read a 16 bit unsigned number off the disk.
static long	getU32(byte[] buffer, int offset) Read a 32 bit unsigned number off the disk.
static long	getU64(byte[] buffer, int offset) Read a 64 bit unsigned number off the disk.

Methods inherited from class java.lang.Object

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

Field Detail

bigEndian

public static boolean bigEndian

Controls endian-ness.

Constructor Detail

FsUtils

public FsUtils()

Method Detail

getU64

public static long getU64(byte[] buffer,
                          int offset)

Read a 64 bit unsigned number off the disk. Note that Java doesn't support unsigned 64 bit integers, so this will not work correctly for very big numbers.

Parameters:

buffer - a byte[] containing the data

offset - a int offset into the buffer

Returns:

a long read from the buffer

getS64

public static long getS64(byte[] buffer,
                          int offset)

This is the same as getU64().

Parameters:

buffer - a byte[] containing the data

offset - a int offset into the buffer

Returns:

a long read from the buffer

See Also:

getU64(byte[],int)

getU32

public static long getU32(byte[] buffer,
                          int offset)

Read a 32 bit unsigned number off the disk. Note that Java doesn't support unsigned integers, so this will be returned in a 64 bit value.

Parameters:

buffer - a byte[] containing the data

offset - a int offset into the buffer

Returns:

a long read from the buffer

getS32

public static long getS32(byte[] buffer,
                          int offset)

Read a 32 bit signed number off the disk. Note that Java doesn't support unsigned integers, so this will be returned in a 64 bit value.

Parameters:

buffer - a byte[] containing the data

offset - a int offset into the buffer

Returns:

a long read from the buffer

getU16

public static int getU16(byte[] buffer,
                         int offset)

Read a 16 bit unsigned number off the disk. Note that Java doesn't support unsigned integers, so this will be returned in a 32 bit value.

Parameters:

buffer - a byte[] containing the data

offset - a int offset into the buffer

Returns:

a long read from the buffer

getS16

public static int getS16(byte[] buffer,
                         int offset)

Read a 16 bit signed number off the disk. Note that Java doesn't support unsigned integers, so this will be returned in a 32 bit value.

Parameters:

buffer - a byte[] containing the data

offset - a int offset into the buffer

Returns:

a long read from the buffer