This class can be used to search and match text using regular expressions.

It provides several static functions that can be used to perform several types of operations with text strings and regular expressions.

Currently it can test if a regular expression is valid, find if a text matches one or more regular expressions, replace parts of a text string that match a regular expression, split a string using a regular expression to define the separator format, count words in a string separated by white spaces.

The class has several static variables with pre-defined regular expressions for matching text in common formats like: white space, line breaks, alphabetic strings, numeric strings, hexadecimal strings, US social security numbers, US zip codes, US states, US dollar amounts, date and time, file paths, Mac and IP addresses, URLs, email addresses, HTML tags, CSS identifiers, MIME types, mobile user agents, etc..