net.sf.saxon.regex

Class JDK15RegexTranslator

java.lang.Object

net.sf.saxon.regex.JDK15RegexTranslator

public class JDK15RegexTranslator
extends Object

This class translates XML Schema regex syntax into JDK 1.5 regex syntax. This differs from the JDK 1.4 translator because JDK 1.5 handles non-BMP characters (wide characters) in places where JDK 1.4 does not, for example in a range such as [X-Y]. This enables much of the code from the 1.4 translator to be removed. Author: James Clark Modified by Michael Kay (a) to integrate the code into Saxon, and (b) to support XPath additions to the XML Schema regex syntax. This version also removes most of the complexities of handling non-BMP characters, since JDK 1.5 handles these natively.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	JDK15RegexTranslator.BackReference
(package private) static class	JDK15RegexTranslator.CharClass
(package private) static class	JDK15RegexTranslator.CharRange
(package private) static class	JDK15RegexTranslator.Complement
(package private) static class	JDK15RegexTranslator.Empty
(package private) static class	JDK15RegexTranslator.Property
(package private) static class	JDK15RegexTranslator.Range
(package private) static class	JDK15RegexTranslator.SimpleCharClass
(package private) static class	JDK15RegexTranslator.SingleChar
(package private) static class	JDK15RegexTranslator.Subtraction
(package private) static class	JDK15RegexTranslator.Union

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static int	ALL
(package private) static String	CATEGORY_NAMES
(package private) static int[][]	CATEGORY_RANGES
(package private) static String	NMCHAR_CATEGORIES
(package private) static String	NMCHAR_EXCLUDE_RANGES
(package private) static String	NMCHAR_INCLUDES
(package private) static String	NMSTRT_CATEGORIES
(package private) static String	NMSTRT_EXCLUDE_RANGES
(package private) static String	NMSTRT_INCLUDES
(package private) static int	NONE
(package private) static String	NOT_ALLOWED_CLASS
(package private) static int	SOME
(package private) static String	SURROGATES1_CLASS
(package private) static String	SURROGATES2_CLASS

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args)
static String	translate(CharSequence regexp, boolean xpath, boolean ignoreWhitespace, boolean caseBlind) Translates a regular expression in the syntax of XML Schemas Part 2 into a regular expression in the syntax of java.util.regex.Pattern.

Methods inherited from class java.lang.Object

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

Field Detail

CATEGORY_NAMES

static final String CATEGORY_NAMES

See Also:

Constant Field Values

CATEGORY_RANGES

static final int[][] CATEGORY_RANGES

NMSTRT_INCLUDES

static final String NMSTRT_INCLUDES

See Also:

Constant Field Values

NMSTRT_EXCLUDE_RANGES

static final String NMSTRT_EXCLUDE_RANGES

See Also:

Constant Field Values

NMSTRT_CATEGORIES

static final String NMSTRT_CATEGORIES

See Also:

Constant Field Values

NMCHAR_INCLUDES

static final String NMCHAR_INCLUDES

See Also:

Constant Field Values

NMCHAR_EXCLUDE_RANGES

static final String NMCHAR_EXCLUDE_RANGES

See Also:

Constant Field Values

NMCHAR_CATEGORIES

static final String NMCHAR_CATEGORIES

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Constant Field Values

NONE

static final int NONE

See Also:

Constant Field Values

SOME

static final int SOME

See Also:

Constant Field Values

ALL

static final int ALL

See Also:

Constant Field Values

SURROGATES1_CLASS

static final String SURROGATES1_CLASS

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Constant Field Values

SURROGATES2_CLASS

static final String SURROGATES2_CLASS

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Constant Field Values

NOT_ALLOWED_CLASS

static final String NOT_ALLOWED_CLASS

See Also:

Constant Field Values

Method Detail

translate

public static String translate(CharSequence regexp,
                               boolean xpath,
                               boolean ignoreWhitespace,
                               boolean caseBlind)
                        throws RegexSyntaxException

Translates a regular expression in the syntax of XML Schemas Part 2 into a regular expression in the syntax of java.util.regex.Pattern. The translation assumes that the string to be matched against the regex uses surrogate pairs correctly. If the string comes from XML content, a conforming XML parser will automatically check this; if the string comes from elsewhere, it may be necessary to check surrogate usage before matching.

Parameters:

regexp - a String containing a regular expression in the syntax of XML Schemas Part 2

xpath - a boolean indicating whether the XPath 2.0 F+O extensions to the schema regex syntax are permitted

Throws:

RegexSyntaxException - if regexp is not a regular expression in the syntax of XML Schemas Part 2, or XPath 2.0, as appropriate

See Also:

Pattern, XML Schema Part 2

main

public static void main(String[] args)
                 throws RegexSyntaxException

Throws:

RegexSyntaxException