add piwik installation

www/analytics/core/AssetManager/UIAssetMerger/JScriptUIAssetMerger.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\AssetManager\UIAssetMerger;
+
+use Piwik\AssetManager\UIAsset;
+use Piwik\AssetManager\UIAssetCacheBuster;
+use Piwik\AssetManager\UIAssetFetcher\JScriptUIAssetFetcher;
+use Piwik\AssetManager\UIAssetMerger;
+use Piwik\AssetManager;
+use Piwik\AssetManager\UIAssetMinifier;
+use Piwik\Piwik;
+
+class JScriptUIAssetMerger extends UIAssetMerger
+{
+    /**
+     * @var UIAssetMinifier
+     */
+    private $assetMinifier;
+
+    /**
+     * @param UIAsset $mergedAsset
+     * @param JScriptUIAssetFetcher $assetFetcher
+     * @param UIAssetCacheBuster $cacheBuster
+     */
+    function __construct($mergedAsset, $assetFetcher, $cacheBuster)
+    {
+        parent::__construct($mergedAsset, $assetFetcher, $cacheBuster);
+
+        $this->assetMinifier = UIAssetMinifier::getInstance();
+    }
+
+    protected function getMergedAssets()
+    {
+        $concatenatedAssets = $this->getConcatenatedAssets();
+
+        return str_replace("\n", "\r\n", $concatenatedAssets);
+    }
+
+    protected function generateCacheBuster()
+    {
+        $cacheBuster = $this->cacheBuster->piwikVersionBasedCacheBuster($this->getPlugins());
+        return "/* Piwik Javascript - cb=" . $cacheBuster . "*/\r\n";
+    }
+
+    protected function getPreamble()
+    {
+        return $this->getCacheBusterValue();
+    }
+
+    protected function postEvent(&$mergedContent)
+    {
+        $plugins = $this->getPlugins();
+
+        if(!empty($plugins)) {
+
+            /**
+             * Triggered after all the JavaScript files Piwik uses are minified and merged into a
+             * single file, but before the merged JavaScript is written to disk.
+             *
+             * Plugins can use this event to modify merged JavaScript or do something else
+             * with it.
+             *
+             * @param string $mergedContent The minified and merged JavaScript.
+             */
+            Piwik::postEvent('AssetManager.filterMergedJavaScripts', array(&$mergedContent), null, $plugins);
+        }
+    }
+
+    public function getFileSeparator()
+    {
+        return PHP_EOL;
+    }
+
+    protected function processFileContent($uiAsset)
+    {
+        $content = $uiAsset->getContent();
+
+        if (!$this->assetMinifier->isMinifiedJs($content))
+            $content = $this->assetMinifier->minifyJs($content);
+
+        return $content;
+    }
+}