Plugin::resetDb PHP Method

    public function resetDb($plugin)
    {
        $path = BcUtil::getSchemaPath($plugin);
        if (!$path) {
            return true;
        }
        $db = ConnectionManager::getDataSource('default');
        $db->cacheSources = false;
        $listSources = $db->listSources();
        $prefix = $db->config['prefix'];
        $Folder = new Folder($path);
        $files = $Folder->read(true, true);
        if (empty($files[1])) {
            return true;
        }
        $tmpdir = TMP . 'schemas' . DS;
        $result = true;
        foreach ($files[1] as $file) {
            $oldSchemaPath = '';
            if (preg_match('/^(.*?)\\.php$/', $file, $matches)) {
                $type = 'drop';
                $table = $matches[1];
                $schemaPath = $tmpdir;
                if (preg_match('/^create_(.*?)\\.php$/', $file, $matches)) {
                    $type = 'drop';
                    $table = $matches[1];
                    if (!in_array($prefix . $table, $listSources)) {
                        continue;
                    }
                    copy($path . DS . $file, $tmpdir . $table . '.php');
                } elseif (preg_match('/^alter_(.*?)\\.php$/', $file, $matches)) {
                    $type = 'alter';
                    $table = $matches[1];
                    if (!in_array($prefix . $table, $listSources)) {
                        continue;
                    }
                    $corePlugins = implode('|', Configure::read('BcApp.corePlugins'));
                    if (preg_match('/^(' . $corePlugins . ')/', Inflector::camelize($table), $matches)) {
                        $pluginName = $matches[1];
                    }
                    $File = new File($path . DS . $file);
                    $data = $File->read();
                    $data = preg_replace('/class\\s+' . Inflector::camelize($table) . 'Schema/', 'class Alter' . Inflector::camelize($table) . 'Schema', $data);
                    $oldSchemaPath = $tmpdir . $file;
                    $File = new File($oldSchemaPath);
                    $File->write($data);
                    $schemaPath = BcUtil::getSchemaPath($pluginName) . DS;
                } elseif (preg_match('/^drop_(.*?)\\.php$/', $file, $matches)) {
                    $type = 'create';
                    $table = $matches[1];
                    if (in_array($prefix . $table, $listSources)) {
                        continue;
                    }
                    copy($path . DS . $file, $tmpdir . $table . '.php');
                } else {
                    if (!in_array($prefix . $table, $listSources)) {
                        continue;
                    }
                    copy($path . DS . $file, $tmpdir . $table . '.php');
                }
                if (!$db->loadSchema(array('type' => $type, 'path' => $schemaPath, 'file' => $table . '.php', 'dropField' => true, 'oldSchemaPath' => $oldSchemaPath))) {
                    $result = false;
                }
                @unlink($tmpdir . $table . '.php');
                if (file_exists($oldSchemaPath)) {
                    unlink($oldSchemaPath);
                }
            }
        }
        return $result;
    }