PHP lessc::cexecute方法代码示例

/**
* Compile less to css. Creates a cache-file of the last compiled less-file.
*
* This code is originally from the manual of lessphp.
*
* @param @less_fname string the filename of the less-file.
* @param @css_fname string the filename of the css-file.
* @param @cache_ext string the file-extension of the cache-file, added to the less filename. Default is '.cache'.
* @returns boolean true if the css-file was changed, else returns false.
*/
function auto_compile_less($less_fname, $css_fname, $cache_ext = '.cache')
{
    $cache_fname = $less_fname . $cache_ext;
    if (file_exists($cache_fname)) {
        $cache = unserialize(file_get_contents($cache_fname));
    } else {
        $cache = $less_fname;
    }
    $new_cache = lessc::cexecute($cache);
    if (!is_array($cache) || $new_cache['updated'] > $cache['updated']) {
        file_put_contents($cache_fname, serialize($new_cache));
        file_put_contents($css_fname, $new_cache['compiled']);
        return true;
    }
    return false;
}

        if (File::exists($path) || File::exists($path .= '.less')) {
            $paths[] = $path;
            $paths = array_merge($paths, $imports($path));
        }
    }
    return $paths;
};
$compile = function ($input_file, $output_file) use($imports) {
    try {
        $latest = File::modified($input_file);
        foreach ($imports($input_file) as $import) {
            $import_modified = File::modified($import);
            $latest = $import_modified > $latest ? $import_modified : $latest;
        }
        if (!File::exists($output_file) || $latest > File::modified($output_file)) {
            $cache = lessc::cexecute($input_file);
            File::put($output_file, $cache['compiled']);
        }
    } catch (Exception $ex) {
        exit('lessc fatal error:<br />' . $ex->getMessage());
    }
};
if (isset($config['directories'])) {
    foreach ($config['directories'] as $less_dir => $css_dir) {
        $less_dir = rtrim($less_dir, '/') . '/';
        foreach (glob($less_dir . '*.[Ll][Ee][Ss][Ss]') as $less) {
            $css = rtrim($css_dir, '/') . '/' . basename($less, '.less') . '.css';
            $compile($less, $css);
        }
    }
}

 public function beforeLayoutRender($observer)
 {
     if (!$this->_getConfigHelper()->isEnabled()) {
         return;
     }
     $layout = Mage::getSingleton('core/layout');
     if (($head = $layout->getBlock('head')) && $head instanceof Mage_Page_Block_Html_Head) {
         $baseJsDir = Mage::getBaseDir() . DS . 'js' . DS;
         $designPackage = Mage::getDesign();
         $newItems = $head->getData('items');
         $globalVars = $this->_getConfigHelper()->getGlobalVariables();
         // Cache by file path
         $filesCollection = Mage::getModel('less/file')->getCollection()->load();
         $filesIds = array_flip($filesCollection->toOptionHash());
         foreach ($newItems as $key => $item) {
             if (in_array($item['type'], array('js_css', 'skin_css'))) {
                 // CSS file
                 if (substr($item['name'], -5) == '.less') {
                     // LESS file
                     if ($item['type'] == 'js_css') {
                         $lessFile = $baseJsDir . $item['name'];
                     } else {
                         $lessFile = $designPackage->getFilename($item['name'], array('_type' => 'skin'));
                     }
                     $baseFile = ltrim(str_replace(Mage::getBaseDir(), '', $lessFile), DS);
                     $cssFile = substr($lessFile, 0, -5) . '.css';
                     try {
                         // Init file config
                         if (isset($filesIds[$baseFile])) {
                             $isNewModel = false;
                             $model = $filesCollection->getItemById($filesIds[$baseFile]);
                             $oldCache = $model->getCache();
                             $forceRebuild = (bool) $model->getForceRebuild();
                             $customVars = $model->getCustomVariables();
                             $useGlobalVars = (bool) $model->getUseGlobalVariables();
                             $forceGlobalVars = (bool) $model->getForceGlobalVariables();
                         } else {
                             $isNewModel = true;
                             $model = null;
                             $oldCache = null;
                             $forceRebuild = false;
                             $customVars = array();
                             $useGlobalVars = true;
                             $forceGlobalVars = false;
                         }
                         // Get all needed variables for current file
                         if (is_array($customVars)) {
                             $oldVars = $customVars;
                             $customVars = array();
                             foreach ($oldVars as $oldVar) {
                                 $customVars[$oldVar['code']] = $oldVar['value'];
                             }
                         } else {
                             $customVars = array();
                         }
                         if ($useGlobalVars) {
                             $variables = array_merge($forceGlobalVars ? $customVars : $globalVars, $forceGlobalVars ? $globalVars : $customVars);
                         } else {
                             $variables = $customVars;
                         }
                         $variables = array_merge($variables, $this->_getLessVariables($item['name']));
                         // Compile if needed (depends on cache and rebuild flag)
                         $oldCache = is_array($oldCache) ? $oldCache : $lessFile;
                         try {
                             $newCache = lessc::cexecute($oldCache, $forceRebuild, $variables, $this->_getLessFunctions($item['name']));
                         } catch (Exception $e) {
                             if ($this->_getConfigHelper()->getShowErrors()) {
                                 if (!is_string($result = $this->_checkWritableFile($cssFile))) {
                                     file_put_contents($cssFile, "\n/* " . $e->getMessage() . " */\n", FILE_APPEND);
                                 }
                             }
                             throw $e;
                         }
                         if (!is_array($oldCache) || $newCache['updated'] > $oldCache['updated']) {
                             if (!is_string($result = $this->_checkWritableFile($cssFile))) {
                                 file_put_contents($cssFile, $newCache['compiled']);
                             } else {
                                 Mage::throwException($result);
                             }
                             if ($isNewModel) {
                                 $model = Mage::getModel('less/file')->setPath($baseFile);
                             }
                             // Won't be further needed and takes most of the place
                             unset($newCache['compiled']);
                             $model->setCache($newCache)->save();
                         }
                     } catch (Exception $e) {
                         Mage::logException($e);
                     }
                     // Force adding the CSS file instead of Less one
                     $newItems[$key]['name'] = substr($item['name'], 0, -5) . '.css';
                 }
             }
         }
         // Replace old items with parsed ones
         $head->setData('items', $newItems);
     }
 }