Detect SPIP version

* Add SPIP adapter
* Detect by spip.php or spip_loader.php

Reference :
* CMS-Garden#76

src/Command/AbstractDetectionCommand.php

@@ -25,6 +25,7 @@
 use Cmsgarden\Cmsscanner\Detector\Adapter\PrestashopAdapter;
 use Cmsgarden\Cmsscanner\Detector\Adapter\RedaxoAdapter;
 use Cmsgarden\Cmsscanner\Detector\Adapter\ShopwareAdapter;
+use Cmsgarden\Cmsscanner\Detector\Adapter\SpipAdapter;
 use Cmsgarden\Cmsscanner\Detector\Adapter\Typo3CmsAdapter;
 use Cmsgarden\Cmsscanner\Detector\Adapter\WordpressAdapter;
 use Symfony\Component\Console\Command\Command;
@@ -69,6 +70,7 @@ public function __construct($name = null)
             ->addAdapter(new WordpressAdapter())
             ->addAdapter(new DrupalAdapter())
             ->addAdapter(new Typo3CmsAdapter())
+            ->addAdapter(new SpipAdapter())
         ;
     }
 

src/Detector/Adapter/SpipAdapter.php

@@ -0,0 +1,111 @@
+<?php
+/**
+ * @package    CMSScanner
+ * @copyright  Copyright (C) 2014 - 2021 CMS-Garden.org
+ * @license    MIT <https://tldrlegal.com/license/mit-license>
+ * @link       https://www.cms-garden.org
+ */
+
+namespace Cmsgarden\Cmsscanner\Detector\Adapter;
+
+use Cmsgarden\Cmsscanner\Detector\System;
+use Symfony\Component\Finder\Finder;
+use Symfony\Component\Finder\SplFileInfo;
+
+/**
+ * Class PrestashopAdapter
+ * @package Cmsgarden\Cmsscanner\Detector\Adapter
+ *
+ * @since   1.0.0
+ */
+class SpipAdapter implements AdapterInterface
+{
+
+    /**
+     * Version detection information for Spip
+     * @var array
+     */
+    protected $versions = array(
+        array( // 6.x
+            'filename' => '/ecrire/inc_version.php',
+            'regexp' => '/\s*\$spip_version_branche\s*=\s*[\'"](.*)[\'"]\s*/',
+        ),
+    );
+
+    /**
+     * SPIP has a file called version.php that can be used to search for working installations
+     *
+     * @param   Finder  $finder  finder instance to append the criteria
+     *
+     * @return  Finder
+     */
+    public function appendDetectionCriteria(Finder $finder)
+    {
+        $finder->name('spip.php');
+        $finder->name('spip_loader.php');        
+        return $finder;
+    }
+
+    /**
+     * try to verify a search result and work around some well known false positives
+     *
+     * @param   SplFileInfo  $file  file to examine
+     *
+     * @return  bool|System
+     */
+    public function detectSystem(SplFileInfo $file)
+    {
+        $fileName = $file->getFilename();
+        if ($fileName !== "spip.php" && $fileName !== "spip_loader.php") {
+            return false;
+        }
+        $path = new \SplFileInfo($file->getPathInfo()->getPath());
+
+        // Return result if working
+        return new System($this->getName(), $path);
+    }
+
+    /**
+     * determine version of a SPIP installation within a specified path
+     *
+     * @param   \SplFileInfo  $path  directory where the system is installed
+     *
+     * @return  null|string
+     */
+    public function detectVersion(\SplFileInfo $path)
+    {
+        foreach ($this->versions as $version) {
+            $sysEnvBuilder = $path->getRealPath() . $version['filename'];
+            if (!file_exists($sysEnvBuilder)) {
+                continue;
+            }
+            if (!is_readable($sysEnvBuilder)) {
+                throw new \RuntimeException(sprintf("Unreadable version information file %s", $sysEnvBuilder));
+            }
+            if (preg_match($version['regexp'], file_get_contents($sysEnvBuilder), $matches)) {
+                if (count($matches) > 1) {
+                    return str_replace(',', '.', $matches[1]);
+                }
+            }
+        }
+        // this must not happen usually
+        return null;
+    }
+
+    /**
+     * @InheritDoc
+     */
+    public function detectModules(\SplFileInfo $path)
+    {
+        // TODO implement this function
+        return false;
+    }
+
+    /***
+     * @return string
+     */
+    public function getName()
+    {
+        return 'SPIP';
+    }
+}