org.htmlunit.cyberneko.xerces.util

Class XMLChar

java.lang.Object

org.htmlunit.cyberneko.xerces.util.XMLChar

public final class XMLChar
extends Object

This class defines the basic XML character properties. The data in this class can be used to verify that a character is a valid XML character or if the character is a space, name start, or name character.

A series of convenience methods are supplied to ease the burden of the developer. Because inlining the checks can improve per character performance, the tables of character properties are public. Using the character as an index into the CHARS array and applying the appropriate mask flag (e.g. MASK_VALID), yields the same results as calling the convenience methods. There is one exception: check the comments for the isValid method for details.

Author:

Glenn Marcy, IBM, Andy Clark, IBM, Eric Ye, IBM, Arnaud Le Hors, IBM, Michael Glavassevich, IBM, Rahul Srivastava, Sun Microsystems Inc.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MASK_NAME Name character mask.
static int	MASK_NAME_START Name start character mask.
static int	MASK_NCNAME NCName character mask.
static int	MASK_NCNAME_START NCName start character mask.

Method Summary

Modifier and Type	Method and Description
static boolean	isLowSurrogate(int c)
static boolean	isName(int c)
static boolean	isNameStart(int c)
static boolean	isNCName(int c)
static boolean	isNCNameStart(int c)
static boolean	isValidName(String name) Check to see if a string is a valid Name according to [5] in the XML 1.0 Recommendation
static boolean	isValidNCName(String ncName) Check to see if a string is a valid NCName according to [4] from the XML Namespaces 1.0 Recommendation
static int	supplemental(char h, char l)

Methods inherited from class java.lang.Object

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

Field Detail

MASK_NAME_START

public static final int MASK_NAME_START

Name start character mask.

See Also:

Constant Field Values

MASK_NAME

public static final int MASK_NAME

Name character mask.

See Also:

Constant Field Values

MASK_NCNAME_START

public static final int MASK_NCNAME_START

NCName start character mask.

See Also:

Constant Field Values

MASK_NCNAME

public static final int MASK_NCNAME

NCName character mask.

See Also:

Constant Field Values

Method Detail

supplemental

public static int supplemental(char h,
                               char l)

Parameters:

h - The high surrogate.

l - The low surrogate.

Returns:

true the supplemental character corresponding to the given surrogates.

isLowSurrogate

public static boolean isLowSurrogate(int c)

Parameters:

c - The character to check.

Returns:

whether the given character is a low surrogate

isNameStart

public static boolean isNameStart(int c)

Parameters:

c - The character to check.

Returns:

true if the specified character is a valid name start character as defined by production [5] in the XML 1.0 specification.

isName

public static boolean isName(int c)

Parameters:

c - The character to check.

Returns:

true if the specified character is a valid name character as defined by production [4] in the XML 1.0 specification.

isNCNameStart

public static boolean isNCNameStart(int c)

Parameters:

c - The character to check.

Returns:

true if the specified character is a valid NCName start character as defined by production [4] in Namespaces in XML recommendation.

isNCName

public static boolean isNCName(int c)

Parameters:

c - The character to check.

Returns:

true if the specified character is a valid NCName character as defined by production [5] in Namespaces in XML recommendation.

isValidName

public static boolean isValidName(String name)

Check to see if a string is a valid Name according to [5] in the XML 1.0 Recommendation

Parameters:

name - string to check

Returns:

true if name is a valid Name

isValidNCName

public static boolean isValidNCName(String ncName)

Check to see if a string is a valid NCName according to [4] from the XML Namespaces 1.0 Recommendation

Parameters:

ncName - string to check

Returns:

true if name is a valid NCName