org.exist.xquery.util
Class RegexTranslator

java.lang.Object
  org.exist.xquery.util.RegexTranslator

public class RegexTranslator
extends Object

This class translates XML Schema regex syntax into JDK 1.4 regex syntax. Copied from Saxon package net.sf.saxon.type without change. The original author is James Clark. See license.

Nested Class Summary

static class

RegexTranslator.RegexSyntaxException Thrown when an syntactically incorrect regular expression is detected.

Method Summary

static void	main(String[] args)
static String	translate(String regexp, boolean xpath) 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

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

Method Detail

translate

public static String translate(String regexp,
                               boolean xpath)
                        throws RegexTranslator.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

Returns:

a String containing a regular expression in the syntax of java.util.regex.Pattern

Throws:

RegexTranslator.RegexSyntaxException - if regexp is not a regular expression in the syntax of XML Schemas Part 2

See Also:

Pattern, XML Schema Part 2

main

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

Throws:

RegexTranslator.RegexSyntaxException