io.netty.buffer

Class ByteBufUtil

java.lang.Object

io.netty.buffer.ByteBufUtil

public final class ByteBufUtil
extends Object

A collection of utility methods that is related with handling ByteBuf.

Method Summary

Methods

Modifier and Type	Method and Description
static int	compare(ByteBuf bufferA, ByteBuf bufferB) Compares the two specified buffers as described in ByteBuf.compareTo(ByteBuf).
static ByteBuf	encodeString(ByteBufAllocator alloc, CharBuffer src, Charset charset) Encode the given CharBuffer using the given Charset into a new ByteBuf which is allocated via the ByteBufAllocator.
static boolean	equals(ByteBuf bufferA, ByteBuf bufferB) Returns true if and only if the two specified buffers are identical to each other as described in ChannelBuffer#equals(Object).
static int	hashCode(ByteBuf buffer) Calculates the hash code of the specified buffer.
static String	hexDump(byte[] array) Returns a hex dump of the specified byte array.
static String	hexDump(byte[] array, int fromIndex, int length) Returns a hex dump of the specified byte array's sub-region.
static String	hexDump(ByteBuf buffer) Returns a hex dump of the specified buffer's readable bytes.
static String	hexDump(ByteBuf buffer, int fromIndex, int length) Returns a hex dump of the specified buffer's sub-region.
static int	indexOf(ByteBuf buffer, int fromIndex, int toIndex, byte value) The default implementation of ByteBuf.indexOf(int, int, byte).
static ByteBuf	readBytes(ByteBufAllocator alloc, ByteBuf buffer, int length) Read the given amount of bytes into a new ByteBuf that is allocated from the ByteBufAllocator.
static int	swapInt(int value) Toggles the endianness of the specified 32-bit integer.
static long	swapLong(long value) Toggles the endianness of the specified 64-bit long integer.
static int	swapMedium(int value) Toggles the endianness of the specified 24-bit medium integer.
static short	swapShort(short value) Toggles the endianness of the specified 16-bit short integer.
static ByteBuf	threadLocalDirectBuffer() Returns a cached thread-local direct buffer, if available.

Methods inherited from class java.lang.Object

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

Method Detail

hexDump

public static String hexDump(ByteBuf buffer)

Returns a hex dump of the specified buffer's readable bytes.

hexDump

public static String hexDump(ByteBuf buffer,
             int fromIndex,
             int length)

Returns a hex dump of the specified buffer's sub-region.

hexDump

public static String hexDump(byte[] array)

Returns a hex dump of the specified byte array.

hexDump

public static String hexDump(byte[] array,
             int fromIndex,
             int length)

Returns a hex dump of the specified byte array's sub-region.

hashCode

public static int hashCode(ByteBuf buffer)

Calculates the hash code of the specified buffer. This method is useful when implementing a new buffer type.

equals

public static boolean equals(ByteBuf bufferA,
             ByteBuf bufferB)

Returns true if and only if the two specified buffers are identical to each other as described in ChannelBuffer#equals(Object). This method is useful when implementing a new buffer type.

compare

public static int compare(ByteBuf bufferA,
          ByteBuf bufferB)

Compares the two specified buffers as described in ByteBuf.compareTo(ByteBuf). This method is useful when implementing a new buffer type.

indexOf

public static int indexOf(ByteBuf buffer,
          int fromIndex,
          int toIndex,
          byte value)

The default implementation of ByteBuf.indexOf(int, int, byte). This method is useful when implementing a new buffer type.

swapShort

public static short swapShort(short value)

Toggles the endianness of the specified 16-bit short integer.

swapMedium

public static int swapMedium(int value)

Toggles the endianness of the specified 24-bit medium integer.

swapInt

public static int swapInt(int value)

Toggles the endianness of the specified 32-bit integer.

swapLong

public static long swapLong(long value)

Toggles the endianness of the specified 64-bit long integer.

readBytes

public static ByteBuf readBytes(ByteBufAllocator alloc,
                ByteBuf buffer,
                int length)

Read the given amount of bytes into a new ByteBuf that is allocated from the ByteBufAllocator.

encodeString

public static ByteBuf encodeString(ByteBufAllocator alloc,
                   CharBuffer src,
                   Charset charset)

Encode the given CharBuffer using the given Charset into a new ByteBuf which is allocated via the ByteBufAllocator.

threadLocalDirectBuffer

public static ByteBuf threadLocalDirectBuffer()

Returns a cached thread-local direct buffer, if available.

Returns:

a cached thread-local direct buffer, if available. null otherwise.