org.glassfish.jersey.message.internal

Class GrammarUtil

java.lang.Object

org.glassfish.jersey.message.internal.GrammarUtil

final class GrammarUtil
extends java.lang.Object

Class containing static utility methods to work with HTTP headers.

Field Summary

Fields

Modifier and Type	Field and Description
static int	COMMENT Represents comment type in the TYPE_TABLE.
static int	CONTROL Represents control type in the TYPE_TABLE.
private static boolean[]	IS_TOKEN convenience table mapping chars to true if they are tokens.
private static boolean[]	IS_WHITE_SPACE Convenience table mapping chars to true if they are white space chars.
static int	QUOTED_STRING Represents quotes type in the TYPE_TABLE.
static int	SEPARATOR Represents separator type in the TYPE_TABLE.
private static char[]	SEPARATORS Array of chars representing separators.
static int	TOKEN Represents token type in the TYPE_TABLE.
private static int[]	TYPE_TABLE Mapping of chars to types.
private static char[]	WHITE_SPACE Array of chars representing white spaces.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	GrammarUtil() Prevents instantiation.

Method Summary

Modifier and Type	Method and Description
static boolean	containsWhiteSpace(java.lang.String s) Returns true if string s contains a white space char.
private static int[]	createEventTable()
private static boolean[]	createTokenTable()
private static boolean[]	createWhiteSpaceTable()
static java.lang.String	filterToken(java.lang.CharSequence s, int start, int end) Filter a substring of a string by removing any new-line characters and un-escaping escaped characters.
static java.lang.String	filterToken(java.lang.CharSequence s, int start, int end, boolean preserveBackslash) Filter a substring of a string by removing any new-line characters and un-escaping escaped characters (unless preserveBackslash is set to true).
static int	getType(char c) Get the character type.
static boolean	isSeparator(char c) Returns true if the provided char is a separator.
static boolean	isToken(char c) Returns true if the provided char is a token.
static boolean	isTokenString(java.lang.String s) Returns true if all chars in string s are tokens.
static boolean	isWhiteSpace(char c) Returns true if the provided char is a white space.

Methods inherited from class java.lang.Object

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

Field Detail

TOKEN

public static final int TOKEN

Represents token type in the TYPE_TABLE.

See Also:

Constant Field Values

QUOTED_STRING

public static final int QUOTED_STRING

Represents quotes type in the TYPE_TABLE.

See Also:

Constant Field Values

COMMENT

public static final int COMMENT

Represents comment type in the TYPE_TABLE.

See Also:

Constant Field Values

SEPARATOR

public static final int SEPARATOR

Represents separator type in the TYPE_TABLE.

See Also:

Constant Field Values

CONTROL

public static final int CONTROL

Represents control type in the TYPE_TABLE.

See Also:

Constant Field Values

WHITE_SPACE

private static final char[] WHITE_SPACE

Array of chars representing white spaces.

SEPARATORS

private static final char[] SEPARATORS

Array of chars representing separators.

TYPE_TABLE

private static final int[] TYPE_TABLE

Mapping of chars to types.

IS_WHITE_SPACE

private static final boolean[] IS_WHITE_SPACE

Convenience table mapping chars to true if they are white space chars.

IS_TOKEN

private static final boolean[] IS_TOKEN

convenience table mapping chars to true if they are tokens.

Constructor Detail

GrammarUtil

private GrammarUtil()

Prevents instantiation.

Method Detail

createEventTable

private static int[] createEventTable()

createWhiteSpaceTable

private static boolean[] createWhiteSpaceTable()

createTokenTable

private static boolean[] createTokenTable()

isWhiteSpace

public static boolean isWhiteSpace(char c)

Returns true if the provided char is a white space.

Parameters:

c - char to check.

Returns:

true if c is a white space.

isToken

public static boolean isToken(char c)

Returns true if the provided char is a token.

Parameters:

c - char to check.

Returns:

true if c is a token.

getType

public static int getType(char c)

Get the character type.

Parameters:

c - char to check.

Returns:

character type identifier.

Throws:

java.lang.IllegalArgumentException - in case the character value is greater than 127.

isSeparator

public static boolean isSeparator(char c)

Returns true if the provided char is a separator.

Parameters:

c - char to check.

Returns:

true if c is a token.

isTokenString

public static boolean isTokenString(java.lang.String s)

Returns true if all chars in string s are tokens.

Parameters:

s - string to check for tokens.

Returns:

true if all chars in s are tokens.

containsWhiteSpace

public static boolean containsWhiteSpace(java.lang.String s)

Returns true if string s contains a white space char.

Parameters:

s - string to check for white spaces.

Returns:

true if s contains white spaces.

filterToken

public static java.lang.String filterToken(java.lang.CharSequence s,
                                           int start,
                                           int end)

Filter a substring of a string by removing any new-line characters and un-escaping escaped characters.

Parameters:

s - character sequence to use for substring token filtering.

start - start filtering position in the string.

end - end filtering position in the string.

Returns:

filtered substring.

filterToken

public static java.lang.String filterToken(java.lang.CharSequence s,
                                           int start,
                                           int end,
                                           boolean preserveBackslash)

Filter a substring of a string by removing any new-line characters and un-escaping escaped characters (unless preserveBackslash is set to true).

Parameters:

s - character sequence to use for substring token filtering.

start - start filtering position in the string.

end - end filtering position in the string.

preserveBackslash - if set to true, this method does not treat backslash as an escape character (treats it as a regular character instead)

Returns:

filtered substring.