open static fun htmlUnescape(input: String): String
Turn HTML character references into their plain text UNICODE equivalent.
Handles complete character set defined in HTML 4.01 recommendation and all reference types (decimal, hex, and entity).
Correctly converts the following formats:
&#Entity; - (Example: &) case sensitive &#Decimal; - (Example: D) &#xHex; - (Example: å) case insensitive Gracefully handles malformed character references by copying original characters as is when encountered.
Reference: http://www.w3.org/TR/html4/sgml/entities.html
input - the (escaped) input string
Return
the unescaped string