org.littleshoot.util.mina
Class MinaCodecUtils

java.lang.Object
  org.littleshoot.util.mina.MinaCodecUtils

public class MinaCodecUtils
extends Object

Taken from AsyncWeb. Utilies for SIP codec handling.

Field Summary

static byte	AMP Ampersand character
static byte	BACK_SLASH Back-slash character
static byte	COLON Colon character
static byte	COMMA Comma.
static byte	CR Carriage return character
static String	DEFAULT_CHARACTER_ENCODING The default charset we employ
static byte	EQUALS Equals character
static byte	FOWARD_SLASH Foward-slash character
static byte	HT Horizontal tab character
static byte	LF Line feed character
static byte	PERCENT Percent character
static byte	PLUS Plus character
static byte	QS Question mark character
static byte	QUOTE Quote character
static byte	SEMI_COLON Semi-colon
static byte	SPACE Space character

Constructor Summary

MinaCodecUtils()

Method Summary

static void	appendCRLF(org.littleshoot.mina.common.ByteBuffer buffer) Appends a CR LF to the specified buffer
static void	appendString(org.littleshoot.mina.common.ByteBuffer buffer, String string) Appends a string to a specified ByteBuffer.
static byte[]	getAsciiBytes(String str) Returns the ASCII bytes for a specified string.
static int	hexAsciiToDecimal(byte b) Obtains the decimal value for a hex value encoded in ASCII
static boolean	isHex(byte b) Determines whether a specified (US-ASCII) character is a valid hex character: A..F a..f 0..9
static boolean	isHttpControl(byte b) Determines whether a specified (US-ASCII) character is an HTTP control character
static boolean	isHttpSeparator(byte b) Determines whether a specified (US-ASCII) character is an HTTP field separator
static boolean	isWhiteSpace(byte b) Determines whether a specified (US-ASCII) character is an HTTP whitespace character (Space or Horizontal tab)
static void	pushBack(org.littleshoot.mina.common.ByteBuffer buffer) "Pushes back" a byte on to the specified buffer, by rewinding the position by 1 byte

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CHARACTER_ENCODING

public static final String DEFAULT_CHARACTER_ENCODING

The default charset we employ

See Also:

Constant Field Values

AMP

public static final byte AMP

Ampersand character

See Also:

Constant Field Values

COLON

public static final byte COLON

Colon character

See Also:

Constant Field Values

CR

public static final byte CR

Carriage return character

See Also:

Constant Field Values

EQUALS

public static final byte EQUALS

Equals character

See Also:

Constant Field Values

LF

public static final byte LF

Line feed character

See Also:

Constant Field Values

SPACE

public static final byte SPACE

Space character

See Also:

Constant Field Values

PLUS

public static final byte PLUS

Plus character

See Also:

Constant Field Values

QS

public static final byte QS

Question mark character

See Also:

Constant Field Values

HT

public static final byte HT

Horizontal tab character

See Also:

Constant Field Values

PERCENT

public static final byte PERCENT

Percent character

See Also:

Constant Field Values

FOWARD_SLASH

public static final byte FOWARD_SLASH

Foward-slash character

See Also:

Constant Field Values

BACK_SLASH

public static final byte BACK_SLASH

Back-slash character

See Also:

Constant Field Values

QUOTE

public static final byte QUOTE

Quote character

See Also:

Constant Field Values

SEMI_COLON

public static final byte SEMI_COLON

Semi-colon

See Also:

Constant Field Values

COMMA

public static final byte COMMA

Comma.

See Also:

Constant Field Values

Constructor Detail

MinaCodecUtils

public MinaCodecUtils()

Method Detail

isHex

public static boolean isHex(byte b)

Determines whether a specified (US-ASCII) character is a valid hex character:

• A..F
• a..f
• 0..9

Parameters:

b - The character to check

Returns:

true iff the character is a valid hex character

isHttpSeparator

public static boolean isHttpSeparator(byte b)

Determines whether a specified (US-ASCII) character is an HTTP field separator

Parameters:

b - The US-ASCII character to check

Returns:

true iff the character is an HTTP field separator

isHttpControl

public static boolean isHttpControl(byte b)

Determines whether a specified (US-ASCII) character is an HTTP control character

Parameters:

b - The US-ASCII character to check

Returns:

true iff the character is an HTTP control character

isWhiteSpace

public static boolean isWhiteSpace(byte b)

Determines whether a specified (US-ASCII) character is an HTTP whitespace character (Space or Horizontal tab)

Parameters:

b - the US-ASCII character to check

Returns:

true iff the character is an HTTP whitespace character

pushBack

public static void pushBack(org.littleshoot.mina.common.ByteBuffer buffer)

"Pushes back" a byte on to the specified buffer, by rewinding the position by 1 byte

Parameters:

buffer - The buffer to "push back" to

hexAsciiToDecimal

public static int hexAsciiToDecimal(byte b)

Obtains the decimal value for a hex value encoded in ASCII

Parameters:

b - The ASCII encoded byte

Returns:

The decimal value - or -1 if the specified byte is not a valid ASCII hex character

getAsciiBytes

public static byte[] getAsciiBytes(String str)

Returns the ASCII bytes for a specified string.

Parameters:

str - The string

Returns:

The ASCII bytes making up the string

appendString

public static void appendString(org.littleshoot.mina.common.ByteBuffer buffer,
                                String string)

Appends a string to a specified ByteBuffer. This method assumes ascii encoding and is primarily used for encoding http header names and values.
Note that encoding header values this way is not stricly correct (character encodings). However, existing containers do it this way (e.g. Tomcat), and we're probably safer doing it a similar way for the time being

Parameters:

buffer - The buffer to append to

string - The string to append

appendCRLF

public static void appendCRLF(org.littleshoot.mina.common.ByteBuffer buffer)

Appends a CR LF to the specified buffer

Parameters:

buffer - The buffer