better-testing

jsShrink.php
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			<?php
			/** Remove spaces and comments from JavaScript code
			* @param string code with commands terminated by semicolon
			* @return string shrinked code
			* @link http://vrana.github.com/JsShrink/
			* @author Jakub Vrana, http://www.vrana.cz/
			* @copyright 2007 Jakub Vrana
			* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
			* @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
			*/
			function jsShrink($input) {
			return preg_replace_callback('(
			(?:
			(^\|[-+\([{}=,:;!%^&\|?~]\|/(?![/])\|return\|throw) # context before regexp
			(?:\s\|//[^\n]+\n\|/\(?:[^]\|\(?!/))+\/)* # optional space
			(/(?![/*])(?:
			\\\\[^\n]
			\|[^[\n/\\\\]++
			\|\[(?:\\\\[^\n]\|[^]])++
			)+/) # regexp
			\|(^
			\|\'(?:\\\\.\|[^\n\'\\\\])*\'
			\|"(?:\\\\.\|[^\n"\\\\])*"
			\|([0-9A-Za-z_$]+)
			\|([-+]+)
			\|.
			)
			)(?:\s\|//[^\n]+\n\|/\(?:[^]\|\(?!/))+\/)* # optional space
			)sx', 'jsShrinkCallback', "$input\n");
			}

			function jsShrinkCallback($match) {
			static $last = '';
			$match += array_fill(1, 5, null); // avoid E_NOTICE
			list(, $context, $regexp, $result, $word, $operator) = $match;
			if ($word != '') {
			$result = ($last == 'word' ? "\n" : ($last == 'return' ? " " : "")) . $result;
			$last = ($word == 'return' \|\| $word == 'throw' \|\| $word == 'break' ? 'return' : 'word');
			} elseif ($operator) {
			$result = ($last == $operator[0] ? "\n" : "") . $result;
			$last = $operator[0];
			} else {
			if ($regexp) {
			$result = $context . ($context == '/' ? "\n" : "") . $regexp;
			}
			$last = '';
			}
			return $result;
			}