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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\Plugin;
use Exception;
use Piwik\Piwik;
use Piwik\Version;
use Piwik\Plugin;
/**
* @see core/Version.php
*/
require_once PIWIK_INCLUDE_PATH . '/core/Version.php';
/**
* Loads plugin metadata found in the following files:
* - piwik.json
*/
class MetadataLoader
{
const PLUGIN_JSON_FILENAME = 'plugin.json';
/**
* The name of the plugin whose metadata will be loaded.
*
* @var string
*/
private $pluginName;
/**
* Constructor.
*
* @param string $pluginName Name of the plugin to load metadata.
*/
public function __construct($pluginName)
{
$this->pluginName = $pluginName;
}
/**
* Loads plugin metadata. @see Plugin::getInformation.
*
* @return array
*/
public function load()
{
$defaults = $this->getDefaultPluginInformation();
$plugin = $this->loadPluginInfoJson();
// use translated plugin description if available
if ($defaults['description'] != Piwik::translate($defaults['description'])) {
unset($plugin['description']);
}
// look for a license file
$licenseFile = $this->getPathToLicenseFile();
if(!empty($licenseFile)) {
$plugin['license_file'] = $licenseFile;
}
return array_merge(
$defaults,
$plugin
);
}
public function hasPluginJson()
{
$hasJson = $this->loadPluginInfoJson();
return !empty($hasJson);
}
private function getDefaultPluginInformation()
{
$descriptionKey = $this->pluginName . '_PluginDescription';
return array(
'description' => $descriptionKey,
'homepage' => 'https://matomo.org/',
'authors' => array(array('name' => 'Matomo', 'homepage' => 'https://matomo.org/')),
'license' => 'GPL v3+',
'version' => Version::VERSION,
'theme' => false,
'require' => array()
);
}
/**
* It is important that this method works without using anything from DI
* @return array|mixed
*/
public function loadPluginInfoJson()
{
$path = $this->getPathToPluginJson();
return $this->loadJsonMetadata($path);
}
public function getPathToPluginJson()
{
$path = $this->getPathToPluginFolder() . '/' . self::PLUGIN_JSON_FILENAME;
return $path;
}
private function loadJsonMetadata($path)
{
if (!file_exists($path)) {
return array();
}
$json = file_get_contents($path);
if (!$json) {
return array();
}
$info = json_decode($json, $assoc = true);
if (!is_array($info)
|| empty($info)
) {
throw new Exception("Invalid JSON file: $path");
}
return $info;
}
/**
* @return string
*/
private function getPathToPluginFolder()
{
return \Piwik\Plugin\Manager::getPluginsDirectory() . $this->pluginName;
}
/**
* @return null|string
*/
public function getPathToLicenseFile()
{
$prefixPath = $this->getPathToPluginFolder() . '/';
$licenseFiles = array(
'LICENSE',
'LICENSE.md',
'LICENSE.txt'
);
foreach ($licenseFiles as $licenseFile) {
$pathToLicense = $prefixPath . $licenseFile;
if (is_file($pathToLicense) && is_readable($pathToLicense)) {
return $pathToLicense;
}
}
return null;
}
}
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