Merge branch '6.2RC'6.2

1 files changed, 326 insertions, 518 deletions

diff --git a/vendor/composer/InstalledVersions.php b/vendor/composer/InstalledVersions.php
index 337b81d14..b3a4e1611 100644
--- a/vendor/composer/InstalledVersions.php
+++ b/vendor/composer/InstalledVersions.php
@@ -1,529 +1,337 @@
 <?php
 
-
-
-
-
-
-
-
-
-
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Composer;
 
 use Composer\Autoload\ClassLoader;
 use Composer\Semver\VersionParser;
 
-
-
-
-
-
-
-
+/**
+ * This class is copied in every Composer installed project and available to all
+ *
+ * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
+ *
+ * To require it's presence, you can require `composer-runtime-api ^2.0`
+ */
 class InstalledVersions
 {
-private static $installed = array (
-  'root' => 
-  array (
-    'pretty_version' => 'dev-master',
-    'version' => 'dev-master',
-    'aliases' => 
-    array (
-    ),
-    'reference' => '3e18efd89fd1bd67f3cef22114f7d74ac7c0021c',
-    'name' => 'zotlabs/hubzilla',
-  ),
-  'versions' => 
-  array (
-    'blueimp/jquery-file-upload' => 
-    array (
-      'pretty_version' => 'v10.31.0',
-      'version' => '10.31.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '0740f81829698b84efe17e72501e0f420ea0d611',
-    ),
-    'brick/math' => 
-    array (
-      'pretty_version' => '0.9.2',
-      'version' => '0.9.2.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'dff976c2f3487d42c1db75a3b180e2b9f0e72ce0',
-    ),
-    'bshaffer/oauth2-server-php' => 
-    array (
-      'pretty_version' => 'v1.11.1',
-      'version' => '1.11.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '5a0c8000d4763b276919e2106f54eddda6bc50fa',
-    ),
-    'commerceguys/intl' => 
-    array (
-      'pretty_version' => 'v1.1.0',
-      'version' => '1.1.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '90b4f75c4917927a1960c0dcaa002a91ab97f5d5',
-    ),
-    'desandro/imagesloaded' => 
-    array (
-      'pretty_version' => 'v4.1.4',
-      'version' => '4.1.4.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '67c4e57453120935180c45c6820e7d3fbd2ea1f9',
-    ),
-    'ezyang/htmlpurifier' => 
-    array (
-      'pretty_version' => 'v4.13.0',
-      'version' => '4.13.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '08e27c97e4c6ed02f37c5b2b20488046c8d90d75',
-    ),
-    'league/html-to-markdown' => 
-    array (
-      'pretty_version' => '5.0.0',
-      'version' => '5.0.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'c4dbebbebe0fe454b6b38e6c683a977615bd7dc2',
-    ),
-    'lukasreschke/id3parser' => 
-    array (
-      'pretty_version' => 'v0.0.3',
-      'version' => '0.0.3.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '62f4de76d4eaa9ea13c66dacc1f22977dace6638',
-    ),
-    'michelf/php-markdown' => 
-    array (
-      'pretty_version' => '1.9.0',
-      'version' => '1.9.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'c83178d49e372ca967d1a8c77ae4e051b3a3c75c',
-    ),
-    'pear/text_languagedetect' => 
-    array (
-      'pretty_version' => 'v1.0.1',
-      'version' => '1.0.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '9e253f26cef9a9066f53f200cc3e0684018cb5b5',
-    ),
-    'phpseclib/phpseclib' => 
-    array (
-      'pretty_version' => '2.0.30',
-      'version' => '2.0.30.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '136b9ca7eebef78be14abf90d65c5e57b6bc5d36',
-    ),
-    'psr/log' => 
-    array (
-      'pretty_version' => '1.1.4',
-      'version' => '1.1.4.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'd49695b909c3b7628b6289db5479a1c204601f11',
-    ),
-    'ramsey/collection' => 
-    array (
-      'pretty_version' => '1.1.3',
-      'version' => '1.1.3.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '28a5c4ab2f5111db6a60b2b4ec84057e0f43b9c1',
-    ),
-    'ramsey/uuid' => 
-    array (
-      'pretty_version' => '4.1.1',
-      'version' => '4.1.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'cd4032040a750077205918c86049aa0f43d22947',
-    ),
-    'rhumsaa/uuid' => 
-    array (
-      'replaced' => 
-      array (
-        0 => '4.1.1',
-      ),
-    ),
-    'sabre/dav' => 
-    array (
-      'pretty_version' => '4.1.5',
-      'version' => '4.1.5.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'c1afdc77a95efea6ee40c03c45f57c3c0c80ec22',
-    ),
-    'sabre/event' => 
-    array (
-      'pretty_version' => '5.1.2',
-      'version' => '5.1.2.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'c120bec57c17b6251a496efc82b732418b49d50a',
-    ),
-    'sabre/http' => 
-    array (
-      'pretty_version' => '5.1.1',
-      'version' => '5.1.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'd0aafede6961df6195ce7a8dad49296b0aaee22e',
-    ),
-    'sabre/uri' => 
-    array (
-      'pretty_version' => '2.2.1',
-      'version' => '2.2.1.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'f502edffafea8d746825bd5f0b923a60fd2715ff',
-    ),
-    'sabre/vobject' => 
-    array (
-      'pretty_version' => '4.3.5',
-      'version' => '4.3.5.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'd8a0a9ae215a8acfb51afc29101c7344670b9c83',
-    ),
-    'sabre/xml' => 
-    array (
-      'pretty_version' => '2.2.3',
-      'version' => '2.2.3.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'c3b959f821c19b36952ec4a595edd695c216bfc6',
-    ),
-    'simplepie/simplepie' => 
-    array (
-      'pretty_version' => '1.5.6',
-      'version' => '1.5.6.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '1c68e14ca3ac84346b6e6fe3c5eedf725d0f92c6',
-    ),
-    'smarty/smarty' => 
-    array (
-      'pretty_version' => 'v3.1.39',
-      'version' => '3.1.39.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => 'e27da524f7bcd7361e3ea5cdfa99c4378a7b5419',
-    ),
-    'symfony/polyfill-ctype' => 
-    array (
-      'pretty_version' => 'v1.23.0',
-      'version' => '1.23.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '46cd95797e9df938fdd2b03693b5fca5e64b01ce',
-    ),
-    'twbs/bootstrap' => 
-    array (
-      'pretty_version' => 'v4.6.0',
-      'version' => '4.6.0.0',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '6ffb0b48e455430f8a5359ed689ad64c1143fac2',
-    ),
-    'twitter/bootstrap' => 
-    array (
-      'replaced' => 
-      array (
-        0 => 'v4.6.0',
-      ),
-    ),
-    'zotlabs/hubzilla' => 
-    array (
-      'pretty_version' => 'dev-master',
-      'version' => 'dev-master',
-      'aliases' => 
-      array (
-      ),
-      'reference' => '3e18efd89fd1bd67f3cef22114f7d74ac7c0021c',
-    ),
-  ),
-);
-private static $canGetVendors;
-private static $installedByVendor = array();
-
-
-
-
-
-
-
-public static function getInstalledPackages()
-{
-$packages = array();
-foreach (self::getInstalled() as $installed) {
-$packages[] = array_keys($installed['versions']);
-}
-
-if (1 === \count($packages)) {
-return $packages[0];
-}
-
-return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
-}
-
-
-
-
-
-
-
-
-
-public static function isInstalled($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (isset($installed['versions'][$packageName])) {
-return true;
-}
-}
-
-return false;
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-public static function satisfies(VersionParser $parser, $packageName, $constraint)
-{
-$constraint = $parser->parseConstraints($constraint);
-$provided = $parser->parseConstraints(self::getVersionRanges($packageName));
-
-return $provided->matches($constraint);
-}
-
-
-
-
-
-
-
-
-
-
-public static function getVersionRanges($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-$ranges = array();
-if (isset($installed['versions'][$packageName]['pretty_version'])) {
-$ranges[] = $installed['versions'][$packageName]['pretty_version'];
-}
-if (array_key_exists('aliases', $installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
-}
-if (array_key_exists('replaced', $installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
-}
-if (array_key_exists('provided', $installed['versions'][$packageName])) {
-$ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
-}
-
-return implode(' || ', $ranges);
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getVersion($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-if (!isset($installed['versions'][$packageName]['version'])) {
-return null;
-}
-
-return $installed['versions'][$packageName]['version'];
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getPrettyVersion($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-if (!isset($installed['versions'][$packageName]['pretty_version'])) {
-return null;
-}
-
-return $installed['versions'][$packageName]['pretty_version'];
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getReference($packageName)
-{
-foreach (self::getInstalled() as $installed) {
-if (!isset($installed['versions'][$packageName])) {
-continue;
-}
-
-if (!isset($installed['versions'][$packageName]['reference'])) {
-return null;
-}
-
-return $installed['versions'][$packageName]['reference'];
-}
-
-throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-}
-
-
-
-
-
-public static function getRootPackage()
-{
-$installed = self::getInstalled();
-
-return $installed[0]['root'];
-}
-
-
-
-
-
-
-
-
-public static function getRawData()
-{
-@trigger_error('getRawData only returns the first dataset loaded, which may not be what you expect. Use getAllRawData() instead which returns all datasets for all autoloaders present in the process.', E_USER_DEPRECATED);
-
-return self::$installed;
-}
-
-
-
-
-
-
-
-public static function getAllRawData()
-{
-return self::getInstalled();
-}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-public static function reload($data)
-{
-self::$installed = $data;
-self::$installedByVendor = array();
-}
-
-
-
-
-
-private static function getInstalled()
-{
-if (null === self::$canGetVendors) {
-self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
-}
-
-$installed = array();
-
-if (self::$canGetVendors) {
-foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
-if (isset(self::$installedByVendor[$vendorDir])) {
-$installed[] = self::$installedByVendor[$vendorDir];
-} elseif (is_file($vendorDir.'/composer/installed.php')) {
-$installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
-}
-}
-}
-
-$installed[] = self::$installed;
-
-return $installed;
-}
+    private static $installed;
+    private static $canGetVendors;
+    private static $installedByVendor = array();
+
+    /**
+     * Returns a list of all package names which are present, either by being installed, replaced or provided
+     *
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackages()
+    {
+        $packages = array();
+        foreach (self::getInstalled() as $installed) {
+            $packages[] = array_keys($installed['versions']);
+        }
+
+        if (1 === \count($packages)) {
+            return $packages[0];
+        }
+
+        return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
+    }
+
+    /**
+     * Returns a list of all package names with a specific type e.g. 'library'
+     *
+     * @param  string   $type
+     * @return string[]
+     * @psalm-return list<string>
+     */
+    public static function getInstalledPackagesByType($type)
+    {
+        $packagesByType = array();
+
+        foreach (self::getInstalled() as $installed) {
+            foreach ($installed['versions'] as $name => $package) {
+                if (isset($package['type']) && $package['type'] === $type) {
+                    $packagesByType[] = $name;
+                }
+            }
+        }
+
+        return $packagesByType;
+    }
+
+    /**
+     * Checks whether the given package is installed
+     *
+     * This also returns true if the package name is provided or replaced by another package
+     *
+     * @param  string $packageName
+     * @param  bool   $includeDevRequirements
+     * @return bool
+     */
+    public static function isInstalled($packageName, $includeDevRequirements = true)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (isset($installed['versions'][$packageName])) {
+                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Checks whether the given package satisfies a version constraint
+     *
+     * e.g. If you want to know whether version 2.3+ of package foo/bar is installed, you would call:
+     *
+     *   Composer\InstalledVersions::satisfies(new VersionParser, 'foo/bar', '^2.3')
+     *
+     * @param  VersionParser $parser      Install composer/semver to have access to this class and functionality
+     * @param  string        $packageName
+     * @param  string|null   $constraint  A version constraint to check for, if you pass one you have to make sure composer/semver is required by your package
+     * @return bool
+     */
+    public static function satisfies(VersionParser $parser, $packageName, $constraint)
+    {
+        $constraint = $parser->parseConstraints($constraint);
+        $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
+
+        return $provided->matches($constraint);
+    }
+
+    /**
+     * Returns a version constraint representing all the range(s) which are installed for a given package
+     *
+     * It is easier to use this via isInstalled() with the $constraint argument if you need to check
+     * whether a given version of a package is installed, and not just whether it exists
+     *
+     * @param  string $packageName
+     * @return string Version constraint usable with composer/semver
+     */
+    public static function getVersionRanges($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            $ranges = array();
+            if (isset($installed['versions'][$packageName]['pretty_version'])) {
+                $ranges[] = $installed['versions'][$packageName]['pretty_version'];
+            }
+            if (array_key_exists('aliases', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
+            }
+            if (array_key_exists('replaced', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
+            }
+            if (array_key_exists('provided', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
+            }
+
+            return implode(' || ', $ranges);
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
+     */
+    public static function getPrettyVersion($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['pretty_version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['pretty_version'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as reference
+     */
+    public static function getReference($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['reference'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['reference'];
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @param  string      $packageName
+     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as install path. Packages of type metapackages also have a null install path.
+     */
+    public static function getInstallPath($packageName)
+    {
+        foreach (self::getInstalled() as $installed) {
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            return isset($installed['versions'][$packageName]['install_path']) ? $installed['versions'][$packageName]['install_path'] : null;
+        }
+
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+    }
+
+    /**
+     * @return array
+     * @psalm-return array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}
+     */
+    public static function getRootPackage()
+    {
+        $installed = self::getInstalled();
+
+        return $installed[0]['root'];
+    }
+
+    /**
+     * Returns the raw installed.php data for custom implementations
+     *
+     * @deprecated Use getAllRawData() instead which returns all datasets for all autoloaders present in the process. getRawData only returns the first dataset loaded, which may not be what you expect.
+     * @return array[]
+     * @psalm-return array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}
+     */
+    public static function getRawData()
+    {
+        @trigger_error('getRawData only returns the first dataset loaded, which may not be what you expect. Use getAllRawData() instead which returns all datasets for all autoloaders present in the process.', E_USER_DEPRECATED);
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                self::$installed = include __DIR__ . '/installed.php';
+            } else {
+                self::$installed = array();
+            }
+        }
+
+        return self::$installed;
+    }
+
+    /**
+     * Returns the raw data of all installed.php which are currently loaded for custom implementations
+     *
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}>
+     */
+    public static function getAllRawData()
+    {
+        return self::getInstalled();
+    }
+
+    /**
+     * Lets you reload the static array from another file
+     *
+     * This is only useful for complex integrations in which a project needs to use
+     * this class but then also needs to execute another project's autoloader in process,
+     * and wants to ensure both projects have access to their version of installed.php.
+     *
+     * A typical case would be PHPUnit, where it would need to make sure it reads all
+     * the data it needs from this class, then call reload() with
+     * `require $CWD/vendor/composer/installed.php` (or similar) as input to make sure
+     * the project in which it runs can then also use this class safely, without
+     * interference between PHPUnit's dependencies and the project's dependencies.
+     *
+     * @param  array[] $data A vendor/composer/installed.php data set
+     * @return void
+     *
+     * @psalm-param array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>} $data
+     */
+    public static function reload($data)
+    {
+        self::$installed = $data;
+        self::$installedByVendor = array();
+    }
+
+    /**
+     * @return array[]
+     * @psalm-return list<array{root: array{name: string, version: string, reference: string, pretty_version: string, aliases: string[], dev: bool, install_path: string}, versions: array<string, array{dev_requirement: bool, pretty_version?: string, version?: string, aliases?: string[], reference?: string, replaced?: string[], provided?: string[], install_path?: string}>}>
+     */
+    private static function getInstalled()
+    {
+        if (null === self::$canGetVendors) {
+            self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
+        }
+
+        $installed = array();
+
+        if (self::$canGetVendors) {
+            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
+                if (isset(self::$installedByVendor[$vendorDir])) {
+                    $installed[] = self::$installedByVendor[$vendorDir];
+                } elseif (is_file($vendorDir.'/composer/installed.php')) {
+                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                    if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
+                        self::$installed = $installed[count($installed) - 1];
+                    }
+                }
+            }
+        }
+
+        if (null === self::$installed) {
+            // only require the installed.php file if this file is loaded from its dumped location,
+            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
+            if (substr(__DIR__, -8, 1) !== 'C') {
+                self::$installed = require __DIR__ . '/installed.php';
+            } else {
+                self::$installed = array();
+            }
+        }
+        $installed[] = self::$installed;
+
+        return $installed;
+    }
 }