net.sf.saxon.regex
Class JDK15RegexTranslator

java.lang.Object
  net.sf.saxon.regex.JDK15RegexTranslator

public class JDK15RegexTranslator

extends java.lang.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.

Method Summary

static void	main(java.lang.String[] args)
static java.lang.String	translate(java.lang.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

Method Detail

translate

public static java.lang.String translate(java.lang.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(java.lang.String[] args)
                 throws RegexSyntaxException

Throws:

RegexSyntaxException