* @category Horde * @license http://www.horde.org/licenses/lgpl21 LGPL 2.1 * @package CssMinify */ /** * Abstract base class for implementing a CSS minification driver. * * @author Michael Slusarz * @category Horde * @copyright 2014-2017 Horde LLC * @license http://www.horde.org/licenses/lgpl21 LGPL 2.1 * @package CssMinify */ abstract class Horde_CssMinify { /** * Original CSS data. * * @var mixed */ protected $_data; /** * Minification options. * * @var array */ protected $_opts = array(); /** * Constructor. * * @param mixed $css Either a string (the CSS text to compress) or an * array of URLs (keys) to filenames (values) * containing the CSS data to compress. * @param array $opts Additional options. See setOptions(). */ public function __construct($css, array $opts = array()) { if (!is_array($css) && !is_string($css)) { throw new InvalidArgumentException('First argument must either be an array or a string.'); } $this->_data = $css; $this->setOptions($opts); } /** * @see Horde_CssMinify::minify() */ public function __toString() { return $this->minify(); } /** * Set minification options. * * @param array $opts Options: *

     *   - logger: (Horde_Log_Logger) Log object to use for log messages.
     *

*/ public function setOptions(array $opts = array()) { $this->_opts = array_merge($this->_opts, $opts); // Ensure we have a logger object. if (!isset($this->_opts['logger']) || !($this->_opts['logger'] instanceof Horde_Log_Logger)) { $this->_opts['logger'] = new Horde_Log_Logger( new Horde_Log_Handler_Null() ); } } /** * Return the minified CSS. * * @return string Minified CSS. * @throws Horde_CssMinify_Exception */ abstract public function minify(); }