/**
* Compress CSS files and write them to media/css folders
*
* @param string $name
* @param string|array $mergeCallback
* @param bool $static
* @return string
*/
protected function _prepareCssCompression($name, $mergeCallback = null, $static = false)
{
$designPackage = Mage::getDesign();
$config = Mage::getStoreConfig('uioptimization/csscompression');
$uiHelper = Mage::helper('uioptimization');
$options = array();
if ($config['type'] == 'yuicompressor') {
//YUI Compressor
$minifier = 'Diglin_Minify_YUICompressor';
$method = 'minifyCss';
// init Minify class with YUI Compressor
Diglin_Minify_YUICompressor::$jarFile = Mage::getBaseDir('lib') . DS . 'Diglin' . DS . 'yuicompressor' . DS . 'yuicompressor.jar';
Diglin_Minify_YUICompressor::$tempDir = Mage::getBaseDir('tmp');
if (strlen($config['java_path']) > 0) {
Diglin_Minify_YUICompressor::$javaExecutable = $config['java_path'];
}
} elseif ($config['type'] == 'googleminify') {
// Google Minify
$minifier = 'Diglin_Minify_CSS';
$method = 'minify';
$options = array('minifierOptions' => array(Diglin_Minify::TYPE_CSS => array('preserveComments' => $config['preserve_comments'])));
} else {
// CSS Tidy
$css = new Diglin_Csstidy_Core();
switch ($config['template']) {
case 'custom':
$css->load_template($config['custom_template']);
break;
case 'low_compression':
case 'default':
case 'high_compression':
case 'highest_compression':
default:
$css->load_template($config['template']);
break;
}
$css->set_cfg('remove_last_;', $config['remove_last_semicolon']);
$css->set_cfg('remove_bslash', $config['remove_bslash']);
$css->set_cfg('compress_colors', $config['compress_colors']);
$css->set_cfg('compress_font-weight', $config['compress_font']);
$css->set_cfg('lowercase_s', $config['lowercase_s']);
$css->set_cfg('optimise_shorthands', $config['optimise_shorthands']);
//0 = none, 1=safe optimize, 2=all optimize
$css->set_cfg('case_properties', $config['case_properties']);
$css->set_cfg('sort_properties', $config['sort_properties']);
$css->set_cfg('sort_selectors', $config['sort_selectors']);
$css->set_cfg('merge_selectors', $config['merge_selectors']);
$css->set_cfg('discard_invalid_properties', $config['discard_invalid_properties']);
$css->set_cfg('css_level', $config['css_level']);
//css2.0, css2.1, css1.0
$css->set_cfg('preserve_css', $config['preserve_css']);
$css->set_cfg('timestamp', $config['timestamp']);
}
$info = $uiHelper->getCompressedInfo($name, 'css', $static);
if (!isset($info['result']) || $info['result'] != false) {
$info['result'] = true;
}
if (!file_exists($info['targetPathFile']) && $info['result'] || !Mage::getStoreConfigFlag('uioptimization/general/cronupdate') && $info['result'] && filemtime($info['orgskin_path']) > filemtime($info['targetPathFile'])) {
$ioFile = new Diglin_Io_File();
if ($config['type'] == 'csstidy') {
// CSS Tidy
$css_code = $ioFile->read($info['orgskin_path']);
$css->parse($css_code);
$cssText = $css->print->plain();
} else {
if ($config['type'] == 'googleminify' || $config['type'] == 'yuicompressor') {
// Google Minify or YUI Compressor
$options += array('quiet' => true, 'files' => array($info['orgskin_path']), 'encodeMethod' => '', 'minifiers' => array(Diglin_Minify::TYPE_CSS => array($minifier, $method)));
$results = Diglin_Minify::serve('Files', $options);
$cssText = $results['content'];
}
}
//clean or fix @import and url(...); by comparing the path with the original CSS file (not the compressed one otherwise the path is wrong)
$cssText = $designPackage->beforeMergeCss($info['orgskin_path'], $cssText);
$info['result'] = $ioFile->write($info['targetPathFile'], $cssText, 0644);
}
return $uiHelper->getResultPath($info, $mergeCallback);
}
/**
* Merges all background properties
* @param array $input_css
* @return array
* @version 1.0
* @see dissolve_short_bg()
* @todo full CSS 3 compliance
*/
public function merge_bg($input_css)
{
$background_prop_default =& $GLOBALS['csstidy']['background_prop_default'];
// Max number of background images. CSS3 not yet fully implemented
$number_of_values = @max(count(self::explode_ws(',', $input_css['background-image'])), count(self::explode_ws(',', $input_css['background-color'])), 1);
// Array with background images to check if BG image exists
$bg_img_array = @self::explode_ws(',', Diglin_Csstidy_Core::gvw_important($input_css['background-image']));
$new_bg_value = '';
$important = '';
for ($i = 0; $i < $number_of_values; $i++) {
foreach ($background_prop_default as $bg_property => $default_value) {
// Skip if property does not exist
if (!isset($input_css[$bg_property])) {
continue;
}
$cur_value = $input_css[$bg_property];
// Skip some properties if there is no background image
if ((!isset($bg_img_array[$i]) || $bg_img_array[$i] === 'none') && ($bg_property === 'background-size' || $bg_property === 'background-position' || $bg_property === 'background-attachment' || $bg_property === 'background-repeat')) {
continue;
}
// Remove !important
if (Diglin_Csstidy_Core::is_important($cur_value)) {
$important = ' !important';
$cur_value = Diglin_Csstidy_Core::gvw_important($cur_value);
}
// Do not add default values
if ($cur_value === $default_value) {
continue;
}
$temp = self::explode_ws(',', $cur_value);
if (isset($temp[$i])) {
if ($bg_property == 'background-size') {
$new_bg_value .= '(' . $temp[$i] . ') ';
} else {
$new_bg_value .= $temp[$i] . ' ';
}
}
}
$new_bg_value = trim($new_bg_value);
if ($i != $number_of_values - 1) {
$new_bg_value .= ',';
}
}
// Delete all background-properties
foreach ($background_prop_default as $bg_property => $default_value) {
unset($input_css[$bg_property]);
}
// Add new background property
if ($new_bg_value !== '') {
$input_css['background'] = $new_bg_value . $important;
}
return $input_css;
}