Adding jreExtract() To Pluck Captured Groups Using Regular Expression In ColdFusion

test.cfm

<cfscript>

	jre = new JRegEx();

	// The following pattern uses a VERBOSE Regular Expression flag to allow for comments
	// and whitespace to make the pattern easier to read. This pattern attempts to capture
	// the aspects of an HTTP URL.
	pattern = "(?x)^
		## Protocol extraction.
		( https?:// | // )?

		## Hostname extraction.
		( [^./][^/\##?]+ )?

		## Pathname extraction (must start with `./` or `/`).
		( \./[^?\##]* | /[^?\##]* )?

		## Query-string extraction (`?` is not captured).
		(?: \? ( [^\##]* ) )?

		## Fragment extraction (`##` is not captured).
		(?: \## ( .* ) )?
	";

	extractGroups( "/index.htm" );
	extractGroups( "./index.htm" );
	extractGroups( "www.bennadel.com" );
	extractGroups( "//www.bennadel.com/index.htm" );
	extractGroups( "https://www.bennadel.com##cool-beans" );
	extractGroups( "https://www.bennadel.com/about/about-ben-nadel.htm?source=Google##h1" );

	// ------------------------------------------------------------------------------- //
	// ------------------------------------------------------------------------------- //

	/**
	* I apply the Java Regular Expression to the given target text using the jreExtract()
	* method. The captured groups are mapped to human-friendly names for the demo dump.
	*/
	public void function extractGroups( required string targetText ) {

		var extraction = jre.jreExtract( targetText, pattern );

		dump(
			label = "Input: #targetText#",
			var = [
				match: extraction[ 0 ],
				protocol: extraction[ 1 ],
				hostname: extraction[ 2 ],
				pathname: extraction[ 3 ],
				queryString: extraction[ 4 ],
				fragment: extraction[ 5 ]
			]
		);

	}

</cfscript>