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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 Piwik\Plugin\Manager as PluginManager;
use Piwik\Version;
/**
*
*/
class Dependency
{
private $piwikVersion;
public function __construct()
{
$this->setPiwikVersion(Version::VERSION);
}
public function getMissingDependencies($requires)
{
$missingRequirements = array();
if (empty($requires)) {
return $missingRequirements;
}
foreach ($requires as $name => $requiredVersion) {
$currentVersion = $this->getCurrentVersion($name);
$missingVersions = $this->getMissingVersions($currentVersion, $requiredVersion);
if (!empty($missingVersions)) {
$missingRequirements[] = array(
'requirement' => $name,
'actualVersion' => $currentVersion,
'requiredVersion' => $requiredVersion,
'causedBy' => implode(', ', $missingVersions)
);
}
}
return $missingRequirements;
}
public function getMissingVersions($currentVersion, $requiredVersion)
{
$currentVersion = trim($currentVersion);
$requiredVersions = explode(',', (string) $requiredVersion);
$missingVersions = array();
foreach ($requiredVersions as $required) {
$comparison = '>=';
$required = trim($required);
if (preg_match('{^(<>|!=|>=?|<=?|==?)\s*(.*)}', $required, $matches)) {
$required = $matches[2];
$comparison = trim($matches[1]);
}
if (false === version_compare($currentVersion, $required, $comparison)) {
$missingVersions[] = $comparison . $required;
}
}
return $missingVersions;
}
public function setPiwikVersion($piwikVersion)
{
$this->piwikVersion = $piwikVersion;
}
private function getCurrentVersion($name)
{
switch (strtolower($name)) {
case 'piwik':
return $this->piwikVersion;
case 'php':
return PHP_VERSION;
default:
try {
$pluginNames = PluginManager::getAllPluginsNames();
if (!in_array($name, $pluginNames) || !PluginManager::getInstance()->isPluginLoaded($name)) {
return '';
}
$plugin = PluginManager::getInstance()->loadPlugin(ucfirst($name));
if (!empty($plugin)) {
return $plugin->getVersion();
}
} catch (\Exception $e) {
}
}
return '';
}
}
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