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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Plugins\CustomJsTracker\TrackingCode;
use Piwik\Piwik;
class PiwikJsManipulator
{
const HOOK = '/*!!! pluginTrackerHook */';
/**
* @var string
*/
private $content;
/** @var PluginTrackerFiles */
private $pluginTrackerFiles;
public function __construct($content, PluginTrackerFiles $pluginTrackerFiles)
{
$this->content = $content;
$this->pluginTrackerFiles = $pluginTrackerFiles;
}
public function manipulateContent()
{
$files = $this->pluginTrackerFiles->find();
foreach ($files as $file) {
$trackerExtension = $this->getSignatureWithContent($file->getName(), $file->getContent());
// for some reasons it is /*!!! in piwik.js minified and /*!! in js/piwik.js unminified
$this->content = str_replace(array(self::HOOK, '/*!! pluginTrackerHook */'), self::HOOK . $trackerExtension, $this->content);
}
$content = $this->content;
/**
* Triggered after the Matomo JavaScript tracker has been generated and shortly before the tracker file
* is written to disk. You can listen to this event to for example automatically append some code to the JS
* tracker file.
*
* **Example**
*
* function onManipulateJsTracker (&$content) {
* $content .= "\nPiwik.DOM.onLoad(function () { console.log('loaded'); });";
* }
*
* @param string $content the generated JavaScript tracker code
*/
Piwik::postEvent('CustomMatomoJs.manipulateJsTracker', array(&$content));
$this->content = $content;
return $this->content;
}
/**
* @param string $name
* @param string $content
* @return string
*/
private function getSignatureWithContent($name, $content)
{
return sprintf(
"\n\n/* GENERATED: %s */\n%s\n/* END GENERATED: %s */\n",
$name,
$content,
$name
);
}
}
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