started CssCrush filter

phpunit.xml.dist

@@ -26,6 +26,7 @@
         <!-- <server name="CSSMIN" value="/path/to/cssmin/source/CssMin.php" /> -->
         <!-- <server name="CSSEMBED_JAR" value="/path/to/cssembed.jar" /> -->
         <!-- <server name="PACKAGER" value="/path/to/packager.php" /> -->
+        <!-- <server name="CSSCRUSH" value="/path/to/CssCrush.php" /> -->
     </php>
 
     <filter>

src/Assetic/Filter/CssCrushFilter.php

@@ -0,0 +1,83 @@
+<?php
+
+/*
+ * This file is part of the Assetic package, an OpenSky project.
+ *
+ * (c) 2010-2011 OpenSky Project Inc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Assetic\Filter;
+
+use Assetic\Asset\AssetInterface;
+use Assetic\Filter\FilterInterface;
+
+/**
+ * Loads CssCrush files.
+ *
+ * @link http://the-echoplex.net/csscrush/
+ * @author Kris Wallsmith <kris.wallsmith@gmail.com>
+ *
+ * @todo import directives do not work
+ */
+class CssCrushFilter implements FilterInterface
+{
+    private $debug = false;
+    private $boilerplate;
+    private $versioning = false;
+
+    public function setDebug($debug)
+    {
+        $this->debug = $debug;
+    }
+
+    public function setBoilerplate($boilerplate)
+    {
+        $this->boilerplate = $boilerplate;
+    }
+
+    public function setVersioning($versioning)
+    {
+        $this->versioning = $versioning;
+    }
+
+    public function filterLoad(AssetInterface $asset)
+    {
+        $options = array();
+
+        if (null !== $this->debug) {
+            $options['debug'] = (Boolean) $this->debug;
+        }
+
+        if (null !== $this->boilerplate) {
+            $options['boilerplate'] = (Boolean) $this->boilerplate;
+        }
+
+        if (null !== $this->versioning) {
+            $options['versioning'] = (Boolean) $this->versioning;
+        }
+
+        // remember the previous document root
+        $snapshot = \CssCrush::$config->docRoot;
+
+        // setup the input
+        $input = tempnam(sys_get_temp_dir(), 'assetic_csscrush');
+        file_put_contents($input, $asset->getContent());
+
+        // process the asset
+        \CssCrush::$config->docRoot = dirname($input);
+        $output = \CssCrush::file('/'.basename($input), $options);
+        $asset->setContent(file_get_contents(\CssCrush::$config->docRoot.$output));
+
+        // cleanup
+        unlink($input);
+        unlink(\CssCrush::$config->docRoot.$output);
+        \CssCrush::$config->docRoot = $snapshot;
+    }
+
+    public function filterDump(AssetInterface $asset)
+    {
+    }
+}

tests/Assetic/Test/Filter/CssCrushFilterTest.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the Assetic package, an OpenSky project.
+ *
+ * (c) 2010-2011 OpenSky Project Inc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Assetic\Test\Filter;
+
+use Assetic\Asset\FileAsset;
+use Assetic\Filter\CssCrushFilter;
+
+/**
+ * @group integration
+ */
+class CssCrushFilterTest extends \PHPUnit_Framework_TestCase
+{
+    protected function setUp()
+    {
+        if (!class_exists('CssCrush', false)) {
+            $this->markTestSkipped('CssCrush is not available.');
+        }
+    }
+
+    public function testLoad()
+    {
+        $asset = new FileAsset(__DIR__.'/fixtures/csscrush/main.css', array(), __DIR__.'/fixtures/csscrush', 'main.css');
+        $asset->load();
+
+        $filter = new CssCrushFilter();
+        $filter->filterLoad($asset);
+
+        $this->assertContains('strong { font-weight: bold; }', $asset->getContent(), '->filterLoad() calls CssCrush');
+    }
+}

tests/Assetic/Test/Filter/fixtures/csscrush/main.css

@@ -0,0 +1,2 @@
+@import url("more.css");
+body { color: red; }

tests/Assetic/Test/Filter/fixtures/csscrush/more.css

@@ -0,0 +1 @@
+strong { font-weight: bold; }

tests/bootstrap.php

@@ -43,3 +43,7 @@
 if (isset($_SERVER['PACKAGER'])) {
     require_once $_SERVER['PACKAGER'];
 }
+
+if (isset($_SERVER['CSSCRUSH'])) {
+    require_once $_SERVER['CSSCRUSH'];
+}