add piwik installation

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

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+<?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;
+    }
+}

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

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+<?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 Exception;
+use Piwik\AssetManager\UIAsset;
+use Piwik\AssetManager\UIAssetMerger;
+use Piwik\Piwik;
+use lessc;
+
+class StylesheetUIAssetMerger extends UIAssetMerger
+{
+    /**
+     * @var lessc
+     */
+    private $lessCompiler;
+
+    function __construct($mergedAsset, $assetFetcher, $cacheBuster)
+    {
+        parent::__construct($mergedAsset, $assetFetcher, $cacheBuster);
+
+        $this->lessCompiler = self::getLessCompiler();
+    }
+
+    protected function getMergedAssets()
+    {
+        foreach($this->getAssetCatalog()->getAssets() as $uiAsset) {
+
+            $content = $uiAsset->getContent();
+            if (false !== strpos($content, '@import')) {
+                $this->lessCompiler->addImportDir(dirname($uiAsset->getAbsoluteLocation()));
+            }
+
+        }
+
+        return $this->lessCompiler->compile($this->getConcatenatedAssets());
+    }
+
+    /**
+     * @return lessc
+     * @throws Exception
+     */
+    private static function getLessCompiler()
+    {
+        if (!class_exists("lessc")) {
+            throw new Exception("Less was added to composer during 2.0. ==> Execute this command to update composer packages: \$ php composer.phar install");
+        }
+        $less = new lessc();
+        return $less;
+    }
+
+    protected function generateCacheBuster()
+    {
+        $fileHash = $this->cacheBuster->md5BasedCacheBuster($this->getConcatenatedAssets());
+        return "/* compile_me_once=$fileHash */";
+    }
+
+    protected function getPreamble()
+    {
+        return $this->getCacheBusterValue() . "\n"
+        . "/* Piwik CSS file is compiled with Less. You may be interested in writing a custom Theme for Piwik! */\n";
+    }
+
+    protected function postEvent(&$mergedContent)
+    {
+        /**
+         * Triggered after all less stylesheets are compiled to CSS, minified and merged into
+         * one file, but before the generated CSS is written to disk.
+         *
+         * This event can be used to modify merged CSS.
+         *
+         * @param string $mergedContent The merged and minified CSS.
+         */
+        Piwik::postEvent('AssetManager.filterMergedStylesheets', array(&$mergedContent));
+    }
+
+    public function getFileSeparator()
+    {
+        return '';
+    }
+
+    protected function processFileContent($uiAsset)
+    {
+        return $this->rewriteCssPathsDirectives($uiAsset);
+    }
+
+    /**
+     * Rewrite css url directives
+     * - rewrites paths defined relatively to their css/less definition file
+     * - rewrite windows directory separator \\ to /
+     *
+     * @param UIAsset $uiAsset
+     * @return string
+     */
+    private function rewriteCssPathsDirectives($uiAsset)
+    {
+        static $rootDirectoryLength = null;
+        if (is_null($rootDirectoryLength)) {
+            $rootDirectoryLength = self::countDirectoriesInPathToRoot($uiAsset);
+        }
+
+        $baseDirectory = dirname($uiAsset->getRelativeLocation());
+        $content = preg_replace_callback(
+            "/(url\(['\"]?)([^'\")]*)/",
+            function ($matches) use ($rootDirectoryLength, $baseDirectory) {
+
+                $absolutePath = realpath(PIWIK_USER_PATH . "/$baseDirectory/" . $matches[2]);
+
+                if($absolutePath) {
+
+                    $relativePath = substr($absolutePath, $rootDirectoryLength);
+
+                    $relativePath = str_replace('\\', '/', $relativePath);
+
+                    return $matches[1] . $relativePath;
+
+                } else {
+                    return $matches[1] . $matches[2];
+                }
+            },
+            $uiAsset->getContent()
+        );
+        return $content;
+    }
+
+    /**
+     * @param UIAsset $uiAsset
+     * @return int
+     */
+    protected function countDirectoriesInPathToRoot($uiAsset)
+    {
+        $rootDirectory = realpath($uiAsset->getBaseDirectory());
+
+        if ($rootDirectory != PATH_SEPARATOR
+            && substr_compare($rootDirectory, PATH_SEPARATOR, -1)) {
+            $rootDirectory .= PATH_SEPARATOR;
+        }
+        $rootDirectoryLen = strlen($rootDirectory);
+        return $rootDirectoryLen;
+    }
+}