Class BCP47Validator

java.lang.Object

com.itextpdf.kernel.utils.checkers.BCP47Validator

public final class BCP47Validator
extends Object

This class is a validator for IETF BCP 47 language tag (RFC 5646).

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	EXTENSION
private static final String	EXTLANG
private static final String	GRANDFATHERED
private static final String	IRREGULAR
private static final String	LANGTAG
private static final String	LANGUAGE
private static final Pattern	LANGUAGE_TAG_PATTERN
private static final String	PRIVATE_USE
private static final String	REGION
private static final String	REGULAR
private static final String	SCRIPT
private static final String	SINGLETON
private static final String	VARIANT

Constructor Summary

Constructors

Modifier	Constructor	Description
private	BCP47Validator()

Method Summary

Modifier and Type	Method	Description
static boolean	validate(String languageTag)	Validate language tag against RFC 5646.

Methods inherited from class Object

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

Field Details

REGULAR

private static final String REGULAR

See Also:

• Constant Field Values

IRREGULAR

private static final String IRREGULAR

See Also:

• Constant Field Values

GRANDFATHERED

private static final String GRANDFATHERED

See Also:

• Constant Field Values

PRIVATE_USE

private static final String PRIVATE_USE

See Also:

• Constant Field Values

SINGLETON

private static final String SINGLETON

See Also:

• Constant Field Values

EXTENSION

private static final String EXTENSION

See Also:

• Constant Field Values

VARIANT

private static final String VARIANT

See Also:

• Constant Field Values

REGION

private static final String REGION

See Also:

• Constant Field Values

SCRIPT

private static final String SCRIPT

See Also:

• Constant Field Values

EXTLANG

private static final String EXTLANG

See Also:

• Constant Field Values

LANGUAGE

private static final String LANGUAGE

See Also:

• Constant Field Values

LANGTAG

private static final String LANGTAG

See Also:

• Constant Field Values

LANGUAGE_TAG_PATTERN

private static final Pattern LANGUAGE_TAG_PATTERN

Constructor Details

BCP47Validator

private BCP47Validator()

Method Details

validate

public static boolean validate(String languageTag)

Validate language tag against RFC 5646.

Parameters:

languageTag - language tag string

Returns:

true if it is a valid tag, false otherwise