<cffunction
	name="REMatchGroup"
	access="public"
	returntype="array"
	output="false"
	hint="Gets the given group of a captured expression.">
 
	<!--- Define arguments. --->
	<cfargument
		name="Pattern"
		type="string"
		required="true"
		hint="The regular expression we want to match on."
		/>
 
	<cfargument
		name="Text"
		type="string"
		required="true"
		hint="The target text against which we will run the patterns."
		/>
 
	<cfargument
		name="Group"
		type="numeric"
		required="false"
		default="0"
		hint="The captured group we want to return."
		/>
 
 
	<!--- Define the local scope. --->
	<cfset var LOCAL = {} />
 
	<!---
		Create the results array. Here is where we will store
		our captured groups.
	--->
	<cfset LOCAL.Results = [] />
 
	<!---
		Compile our regular expression pattern. By using the
		underlying Java pattern class, we will have both faster
		pattern matching and more access to the matched groups.
	--->
	<cfset LOCAL.Pattern = CreateObject(
		"java",
		"java.util.regex.Pattern"
		).Compile(
			JavaCast( "string", ARGUMENTS.Pattern )
			)
		/>
 
	<!--- Get our pattern matcher for our target text. --->
	<cfset LOCAL.Matcher = LOCAL.Pattern.Matcher(
		JavaCast( "string", ARGUMENTS.Text )
		) />
 
 
	<!---
		Keep looping over the pattern matches until we hit the
		end of the target string.
	--->
	<cfloop condition="LOCAL.Matcher.Find()">
 
		<!---
			Append the target group to the results array. If the
			Group was not defined (defaulting to zero), then the
			entire pattern will be matched.
		--->
		<cfset ArrayAppend(
			LOCAL.Results,
			LOCAL.Matcher.Group(
				JavaCast( "int", ARGUMENTS.Group )
				)
			) />
 
	</cfloop>
 
 
	<!--- Return the results array. --->
	<cfreturn LOCAL.Results />
</cffunction>