Module com.renomad.minum

Package com.renomad.minum.testing

Class RegexUtils

java.lang.Object

com.renomad.minum.testing.RegexUtils

public final class RegexUtils
extends Object

Handy helpers to make regular expression marginally easier / more efficient, etc.

Method Summary

Modifier and Type	Method	Description
static String	find(String regex, String data)	Helper to find a value in a string using a Regex.
static String	find(String regex, String data, String matchGroupName)	Find a value by regular expression, for testing
static boolean	isFound(String regex, String data)	Returns whether the regular expression matched the data Note: This is a poor-performance method, mainly used as a quick helper where performance concerns don't exist,since each call to this method will compile the regular expression.

Methods inherited from class java.lang.Object

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

Method Details

find

public static String find(String regex,
 String data)

Helper to find a value in a string using a Regex. Note, this is not nearly as performant, since each call to this method will compile the regular expression.

Returns:

returns the first match found, or an empty string

isFound

public static boolean isFound(String regex,
 String data)

Returns whether the regular expression matched the data Note: This is a poor-performance method, mainly used as a quick helper where performance concerns don't exist,since each call to this method will compile the regular expression.

find

public static String find(String regex,
 String data,
 String matchGroupName)

Find a value by regular expression, for testing

A helper method to make things it easier to find a value in a string using a Regex. This method is slow, since each call will compile the regular expression.

This version is similar to find(String, String) except that it allows you to specify a match group by name. For example, here's a regex with a named match group, in this example the name is "namevalue":

         "\\bname\\b=\"(?<namevalue>.*?)\""
     

Thus, to use it here, you would search like this:

         find("\\bname\\b=\"(?<namevalue>.*?)\"", data, "namevalue")
     

To summarize: in a regex, you specify a matching group by surrounding it with parentheses. To name it, you insert right after the opening parenthesis a question mark and then a string literal surrounded by angle brackets

Important: the name of the match group must be alphanumeric - do not use any special characters or punctuation

Returns:

returns the first match found, or an empty string