Package net.sf.saxon.regex.charclass

Class Categories

java.lang.Object

net.sf.saxon.regex.charclass.Categories

public class Categories
extends Object

Singleton class holding data for Regular expression character categories.

The data is read from an XML file derived from the Unicode database (In Saxon 9.6, this is based on Unicode 6.2.0). Since Saxon 9.4, we no longer make use of Java's support for character categories since there are too many differences from Unicode.

Some commonly used categories are hard-coded and made available as static constants.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Categories.Category	A Category is a CharacterClass represented in a regular expression as \p{Xx}.

Field Summary

Fields

Modifier and Type	Field	Description
static final PredicateCharacterClass	ESCAPE_c
static final CharacterClass	ESCAPE_C
static final Categories.Category	ESCAPE_d
static final CharacterClass	ESCAPE_D
static final PredicateCharacterClass	ESCAPE_i
static final CharacterClass	ESCAPE_I
static final CharacterClass	ESCAPE_s
static final CharacterClass	ESCAPE_S
static final PredicateCharacterClass	ESCAPE_w
static final CharacterClass	ESCAPE_W

Method Summary

Modifier and Type	Method	Description
static Categories.Category	getCategory(String cat)	Get a predicate to test characters for membership of one of the Unicode character categories

Methods inherited from class java.lang.Object

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

Field Details

ESCAPE_s

public static final CharacterClass ESCAPE_s

ESCAPE_S

public static final CharacterClass ESCAPE_S

ESCAPE_i

public static final PredicateCharacterClass ESCAPE_i

ESCAPE_I

public static final CharacterClass ESCAPE_I

ESCAPE_c

public static final PredicateCharacterClass ESCAPE_c

ESCAPE_C

public static final CharacterClass ESCAPE_C

ESCAPE_d

public static final Categories.Category ESCAPE_d

ESCAPE_D

public static final CharacterClass ESCAPE_D

ESCAPE_w

public static final PredicateCharacterClass ESCAPE_w

ESCAPE_W

public static final CharacterClass ESCAPE_W

Method Details

getCategory

public static Categories.Category getCategory(String cat)

Get a predicate to test characters for membership of one of the Unicode character categories

Parameters:

cat - a one-character or two-character category name, for example L or Lu

Returns:

a predicate that tests whether a given character belongs to the category