Merge pull request #69 from mrothauer/master

add filter for CleanCss

src/Filter/CleanCss.php

@@ -0,0 +1,56 @@
+<?php
+/**
+ * MiniAsset
+ * Copyright (c) Mark Story (http://mark-story.com)
+ *
+ * Licensed under The MIT License
+ * For full copyright and license information, please see the LICENSE.txt
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @copyright Copyright (c) Mark Story (http://mark-story.com)
+ * @since     0.0.1
+ * @license   http://www.opensource.org/licenses/mit-license.php MIT License
+ */
+namespace MiniAsset\Filter;
+
+/**
+ * CleanCssFilter.
+ *
+ * Allows you to filter Css files through CleanCss. You need to install CleanCssCli with composer.
+ */
+class CleanCss extends AssetFilter
+{
+
+    /**
+     * Settings for CleanCss
+     *
+     * - `node` Path to nodejs on your machine
+     * - `node_path` The path to the node_modules directory where cleancss is installed.
+     */
+    protected $_settings = array(
+        'node' => '/usr/local/bin/node',
+        'cleancss' => '/usr/local/bin/clean-css-cli/bin/cleancss',
+        'node_path' => '/usr/local/lib/node_modules',
+        'options' => '',
+    );
+
+    /**
+     * Run `cleancss` against the output and compress it.
+     *
+     * @param  string $target   Name of the file being generated.
+     * @param  string $content The uncompressed contents for $filename.
+     * @return string Compressed contents.
+     */
+    public function output($target, $content)
+    {
+        $tmpFile = tempnam(sys_get_temp_dir(), 'CLEANCSS');
+        file_put_contents($tmpFile, $content);
+        $cmd = $this->_settings['node'] . ' ' .
+            $this->_settings['cleancss'] . $this->_settings['options'] . ' ' .
+            escapeshellarg($tmpFile);
+        $env = array('NODE_PATH' => $this->_settings['node_path']);
+        $result = $this->_runCmd($cmd, '', $env);
+        unlink($tmpFile);
+        return $result;
+    }
+}