com.sun.grizzly.util
Class Utils

java.lang.Object
  com.sun.grizzly.util.Utils

public class Utils
extends java.lang.Object

Class contains set of useful operations commonly used in the framework

Author:

Alexey Stashok, Jean-Francois Arcand

Nested Class Summary

static class

Utils.Result

Field Summary

static boolean

VERBOSE_TESTS

Constructor Summary

Utils()

Method Summary

static byte[]	copy(byte[] src)
static void	dumpErr(java.lang.Object text)
static void	dumpOut(java.lang.Object text)
static byte[]	extractBytes(java.nio.ByteBuffer byteBuffer, byte startByte, byte endByte) Return the bytes contained between the startByte and the endByte.
static int	findBytes(java.nio.ByteBuffer byteBuffer, byte[] b) Specialized utility method: find a sequence of lower case bytes inside a ByteBuffer.
static int	findBytes(java.nio.ByteBuffer bb, java.util.regex.Pattern pattern)
static boolean	isDebugVM()
static java.nio.charset.Charset	lookupCharset(java.lang.String charsetName) Deprecated. use Charsets.lookupCharset(java.lang.String)
static java.nio.channels.Selector	openSelector()
static Utils.Result	readWithTemporarySelector(java.nio.channels.SelectableChannel channel, java.nio.ByteBuffer byteBuffer, long readTimeout) Method reads data from SelectableChannel to ByteBuffer.
static java.util.List<java.lang.String>	toHexStrings(byte[] bytes)
static java.util.List<java.lang.String>	toHexStrings(byte[] bytes, int start, int end)

Methods inherited from class java.lang.Object

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

Field Detail

VERBOSE_TESTS

public static boolean VERBOSE_TESTS

Constructor Detail

Utils

public Utils()

Method Detail

lookupCharset

public static java.nio.charset.Charset lookupCharset(java.lang.String charsetName)

Deprecated. use Charsets.lookupCharset(java.lang.String)

Lookup a Charset by name. Fixes Charset concurrency issue (http://paul.vox.com/library/post/the-mysteries-of-java-character-set-performance.html)

Parameters:

charsetName -

Returns:

Charset

openSelector

public static java.nio.channels.Selector openSelector()
                                               throws java.io.IOException

Throws:

java.io.IOException

readWithTemporarySelector

public static Utils.Result readWithTemporarySelector(java.nio.channels.SelectableChannel channel,
                                                     java.nio.ByteBuffer byteBuffer,
                                                     long readTimeout)
                                              throws java.io.IOException

Method reads data from SelectableChannel to ByteBuffer. If data is not immediately available - channel will be reregistered on temporary Selector and wait maximum readTimeout milliseconds for data.

Parameters:

channel - SelectableChannel to read data from

byteBuffer - ByteBuffer to store read data to

readTimeout - maximum time in millis operation will wait for incoming data

Returns:

number of bytes were read

Throws:

IOException - if any error was occured during read

java.io.IOException

extractBytes

public static byte[] extractBytes(java.nio.ByteBuffer byteBuffer,
                                  byte startByte,
                                  byte endByte)

Return the bytes contained between the startByte and the endByte. The ByteBuffer will be left in the state it was before invoking that method, meaning its position and limit will be the same.

Parameters:

byteBuffer - The bytes.

startByte - the first byte to look for

endByte - the second byte to look for

Returns:

The byte[] contained between startByte and endByte

findBytes

public static int findBytes(java.nio.ByteBuffer byteBuffer,
                            byte[] b)

Specialized utility method: find a sequence of lower case bytes inside a ByteBuffer.

findBytes

public static int findBytes(java.nio.ByteBuffer bb,
                            java.util.regex.Pattern pattern)

isDebugVM

public static boolean isDebugVM()

dumpOut

public static void dumpOut(java.lang.Object text)

dumpErr

public static void dumpErr(java.lang.Object text)

copy

public static byte[] copy(byte[] src)

toHexStrings

public static java.util.List<java.lang.String> toHexStrings(byte[] bytes)

toHexStrings

public static java.util.List<java.lang.String> toHexStrings(byte[] bytes,
                                                            int start,
                                                            int end)