de.xima.fc.form.renderer

Class JsRegExpCheck

java.lang.Object

de.xima.fc.form.renderer.JsRegExpCheck

All Implemented Interfaces:

Predicate<String>

public class JsRegExpCheck
extends Object
implements Predicate<String>

Checks whether a string matches a JavaScript regexp. Adds protection against malicious regexps that may cause infinite loops.

Since:

7.0.0

Author:

XIMA MEDIA GmbH

Constructor Summary

Constructors

Constructor and Description
JsRegExpCheck(Object[] args) Creates a new regexp check with the given regexp and flags.
JsRegExpCheck(String regExp, String... flags)

Method Summary

Modifier and Type	Method and Description
boolean	test(String value)
JsRegExpCheck	withTimeout(long timeout, TimeUnit unit) Changes the default timeout.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, isEqual, negate, or

Constructor Detail

JsRegExpCheck

public JsRegExpCheck(Object[] args)

Creates a new regexp check with the given regexp and flags.

Parameters:

args - An array that contains the regexp (String) as the first item, and optional String flags as the second, third, etc. item. Currently only i, g, and m flags are supported by the regexp engine.

JsRegExpCheck

public JsRegExpCheck(String regExp,
                     String... flags)

Parameters:

regExp - Regexp to use.

flags - Optional flags for the regexp. Currently only i, g, and m flags are supported by the regexp engine.

Method Detail

test

public boolean test(String value)

Specified by:

test in interface Predicate<String>

withTimeout

public JsRegExpCheck withTimeout(long timeout,
                                 TimeUnit unit)

Changes the default timeout. When the regexp check takes longer than this timeout, the check is aborted and the regexp is considered not to match the input.

Parameters:

timeout - Timeout for the regexp check.

unit - Unit of the given timeout value.

Returns:

A new regexp check with the given timeout.