Package lumis.util

Class HtmlUtil

java.lang.Object

lumis.util.HtmlUtil

@StableMinor(version="14.0",
             sinceVersion="4.0")
public abstract class HtmlUtil
extends Object

Utility class for HTML decoding

Since:

4.0.0

Version:

$Revision: 24477 $ $Date: 2021-04-28 11:30:36 -0300 (Wed, 28 Apr 2021) $

Constructor Summary

Constructors

Constructor	Description
HtmlUtil()

Method Summary

Modifier and Type	Method	Description
static String	decode(String inputHtml)	Decodes a HTML string, replacing character references (&...;) by their corresponding characters.
static String	encode(String inputHtml)	Encodes a HTML string, replacing extended characters by their corresponding character references.
static String	encode(String inputHtml, boolean useEntityRefs)	Encodes a HTML string, replacing extended caracters by their corresponding character references if the parameter useEntityRefs is true
static String	fixInvalidHtmlPattern(String inputHtml)	Parses the input HTML string, fixes any invalid HTML patterns and returns the fixed result.
static boolean	isFragment(String html)	Returns if the given HTML code is a fragment or if it contains a root html element.
static void	validateJSFragmentSafety(String jsFragment)	Validates if a javascript code fragment is safe to be injected in a page.

Methods inherited from class java.lang.Object

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

Constructor Detail

HtmlUtil

public HtmlUtil()

Method Detail

decode

public static String decode(String inputHtml)

Decodes a HTML string, replacing character references (&...;) by their corresponding characters.

e.g: coração -> coração

For more information about HTML character references, see the section "5.3 Character references" of the HTML 4.01 Specification

Parameters:

inputHtml - input HTML

Returns:

the HTML decoded

encode

public static String encode(String inputHtml)

Encodes a HTML string, replacing extended characters by their corresponding character references.

e.g: coração -> coração

For more information about HTML character references, see the section "5.3 Character references" of the HTML 4.01 Specification

Parameters:

inputHtml - the string to be encoded.

Returns:

the encoded string.

encode

public static String encode(String inputHtml,
                            boolean useEntityRefs)

Encodes a HTML string, replacing extended caracters by their corresponding character references if the parameter useEntityRefs is true

e.g: coração -> coração

else the replacement is done using the decimal reference

e.g: coração -> coração

For more information about HTML character references, see the section "5.3 Character references" of the HTML 4.01 Specification

Parameters:

inputHtml - the string to be encoded.

useEntityRefs - if HTML entities should be used during encoding.

Returns:

the encoded string.

fixInvalidHtmlPattern

public static String fixInvalidHtmlPattern(String inputHtml)

Parses the input HTML string, fixes any invalid HTML patterns and returns the fixed result.

Parameters:

input - HTML to be fixed

Returns:

the fixed HTML

Since:

4.1.1

validateJSFragmentSafety

public static void validateJSFragmentSafety(String jsFragment)

Validates if a javascript code fragment is safe to be injected in a page. This method is to be used when javascript codes are obtained from unsecure sources, such as a HTTP request parameter.

Currently this method accepts code that contains only letters, numbers, underscore or period. These can be used to represent an object reference.

Parameters:

jsFragment - the javascript code fragment.

Throws:

IllegalArgumentException - if the javascript code fragment is considered unsafe.

Since:

5.0.0

isFragment

public static boolean isFragment(String html)

Returns if the given HTML code is a fragment or if it contains a root html element.

Parameters:

html - the HTML code.

Returns:

true if the given code is a fragment, or false if it contains a root html element.

Since:

12.1.0