/**
* Optimize an input CSS string or parsed css_group
*
* @param string|css_group $css
*
* @return string|css_group
*/
public function process($css)
{
//Parse CSS
if ($css instanceof css_group) {
$css_doc = $css;
} else {
$parser = new css_parser();
$css_doc = $parser->parse($css);
}
//Remove comments
if ($this->remove_comments) {
foreach ($css_doc->find_all('css_element') as $element) {
if ($element->type == 'comment') {
$element->remove();
}
}
}
//Lowercase all property names
foreach ($css_doc->find_all('css_property') as $property) {
$property->name = strtolower($property->name);
}
//Remove IE hacks
if ($this->remove_ie_hacks) {
$this->_remove_ie_hacks($css_doc);
}
//Optimize
if ($this->optimize) {
$this->_optimize($css_doc);
}
//Extra optimize
if ($this->extra_optimize) {
$this->_extra_optimize($css_doc);
}
//Add vendor prefixes
if ($this->prefixes) {
$prefixer = new css_prefixer();
$options = explode(',', $this->prefixes);
$prefixer->webkit = $this->prefixes == 'all' || in_array('webkit', $options);
$prefixer->mozilla = $this->prefixes == 'all' || in_array('mozilla', $options);
$prefixer->opera = $this->prefixes == 'all' || in_array('opera', $options);
$prefixer->msie = $this->prefixes == 'all' || in_array('msie', $options);
$prefixer->add_prefixes($css_doc);
}
return $css instanceof css_group ? $css_doc : $css_doc->render($this->compress);
}
}
} else {
//Read from input file
$in = array_shift($argv);
if (!$in) {
echo $HELP;
exit(1);
}
$data = file_get_contents($in);
if ($data === false) {
err("Could not read to file {$in}");
exit(1);
}
}
//Parse input
$parser = new css_parser();
$css_doc = $parser->parse($data);
if (has('u')) {
//css_cleaner
if (!has('p')) {
err('Please, indicate the project source path. Multiple paths can be concatenated using ' . PATH_SEPARATOR);
exit(1);
}
$cleaner = new css_cleaner();
$cleaner->verbose = true;
$cleaner->project_files = explode(PATH_SEPARATOR, $opts['p']);
$cleaner->method = get('m', 'safe') == 'safe' ? css_cleaner::METHOD_SAFE : css_cleaner::METHOD_BEST_CLEAN;
if (has('e')) {
$cleaner->extensions = get('e');
}
if (has('r')) {
function do_optimization()
{
$settings = array();
$cleaner = new css_cleaner();
foreach (array('method', 'compress') as $prop) {
$settings[$prop] = isset($_POST[$prop]) ? $_POST[$prop] : (isset($cleaner->{$prop}) ? $cleaner->{$prop} : false);
$cleaner->{$prop} = $settings[$prop];
}
$result = array();
$result['settings'] = $settings;
if (!empty($_POST['source'])) {
$cleaner->verbose = true;
$cleaner->project_files[] = dirname(__FILE__);
$result['source'] = $_POST['source'];
$parser = new css_parser();
//Clean CSS
ob_start();
$start = microtime(true);
$result['css'] = $cleaner->clean($parser->parse($result['source']))->render($settings['compress']);
$result['execution_time'] = microtime(true) - $start;
$result['output'] = ob_get_clean();
}
return $result;
}
