Package io.datarouter.bytes

Class TerminatedByteArrayTool

java.lang.Object

io.datarouter.bytes.TerminatedByteArrayTool

public class TerminatedByteArrayTool
extends Object

Terminated arrays can be embedded in a bigger array knowing that 0 is the terminal character. We escape away the 0 bytes inside the array. Two escaped arrays will compare equivalently to two unescaped arrays. To escape: - replace 0 with 1,2. - replace 1 with 1,3. - append 0 at the end.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TerminatedByteArrayTool.NumEscapedAndTerminalIndex

Field Summary

Fields

Modifier and Type	Field	Description
static final byte	ESCAPE_BYTE
static final int	ESCAPE_SHIFT
static final byte	TERMINAL_BYTE

Constructor Summary

Constructors

Constructor	Description
TerminatedByteArrayTool()

Method Summary

Modifier and Type	Method	Description
static byte[]	escapeAndTerminate(byte[] input)
static int	escapedAndTerminatedLength(byte[] input)
static TerminatedByteArrayTool.NumEscapedAndTerminalIndex	findEscapedCountAndTerminalIndex(byte[] bytes, int offset)
static int	findTerminalIndex(byte[] bytes, int offset)
static int	lengthWithTerminator(byte[] bytes, int offset)
static byte[]	unescapeAndUnterminate(byte[] escapedBytes, int offset)
static byte[]	unescapeAndUnterminate(byte[] escapedBytes, int offset, int numEscaped, int terminalIndex)

Methods inherited from class java.lang.Object

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

Field Details

TERMINAL_BYTE

public static final byte TERMINAL_BYTE

See Also:

• Constant Field Values

ESCAPE_BYTE

public static final byte ESCAPE_BYTE

See Also:

• Constant Field Values

ESCAPE_SHIFT

public static final int ESCAPE_SHIFT

See Also:

• Constant Field Values

Constructor Details

TerminatedByteArrayTool

public TerminatedByteArrayTool()

Method Details

escapedAndTerminatedLength

public static int escapedAndTerminatedLength(byte[] input)

escapeAndTerminate

public static byte[] escapeAndTerminate(byte[] input)

lengthWithTerminator

public static int lengthWithTerminator(byte[] bytes,
 int offset)

findTerminalIndex

public static int findTerminalIndex(byte[] bytes,
 int offset)

findEscapedCountAndTerminalIndex

public static TerminatedByteArrayTool.NumEscapedAndTerminalIndex findEscapedCountAndTerminalIndex(byte[] bytes,
 int offset)

unescapeAndUnterminate

public static byte[] unescapeAndUnterminate(byte[] escapedBytes,
 int offset,
 int numEscaped,
 int terminalIndex)

unescapeAndUnterminate

public static byte[] unescapeAndUnterminate(byte[] escapedBytes,
 int offset)