#58 Expansion Zend Config

library/config.php

@@ -22,7 +22,7 @@ $config = [
 	// Database
 	'db' => [
 		'driver'   => 'Pdo_Mysql',
-		'hostname' => 'localhost',
+		'hostname' => '127.0.0.1',
 		'database' => 'tp_220',
 		'username' => 'user',
 		'password' => 'pass',
@@ -31,8 +31,8 @@ $config = [
 
 	// Sphinx
 	'sphinx' => [
-		'driver'   => 'Pdo_Mysql',
+		'driver'   => '{self.db.driver}',
-		'hostname' => 'localhost',
+		'hostname' => '{self.db.hostname}',
 		'username' => 'user',
 		'password' => 'pass',
 		'port'     => 9306,

src/Config.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace TorrentPier;
+
+use Zend\Config\Config as ZendConfig;
+
+class Config extends ZendConfig
+{
+    protected $root;
+
+    /**
+     * Config constructor.
+     *
+     * @param array $array
+     * @param bool $allowModifications
+     * @param Config|null $root
+     */
+    public function __construct(array $array, $allowModifications = false, Config $root = null)
+    {
+        $this->allowModifications = (bool) $allowModifications;
+
+        $this->root = $root;
+
+        foreach ($array as $key => $value) {
+            if (is_array($value)) {
+                $this->data[$key] = new static($value, $this->allowModifications, $this);
+            } else {
+                $this->data[$key] = $value;
+            }
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function get($name, $default = null)
+    {
+        $result = parent::get($name, null);
+
+        if ($result === null) {
+            if (strpos($name, '.')) {
+                $keys = explode('.', $name);
+                $result = $this;
+                foreach ($keys as $key) {
+                    $result = $result->get($key);
+                    if ($result === null) {
+                        break;
+                    }
+                }
+            }
+
+            $result = $result ?: $default;
+        }
+
+        return $this->prepareValue($result);
+    }
+
+    protected function prepareValue($value)
+    {
+        if (is_string($value)) {
+            $strPos = strpos($value, '{self.');
+            if ($strPos !== false) {
+                $strPos += 6;
+                $key = substr($value, $strPos, (strpos($value, '}') - $strPos));
+
+                $value = str_replace('{self.'.$key.'}', $this->root->get($key, ''), $value);
+            }
+        }
+
+        return $value;
+    }
+}

src/ServiceProviders/ConfigServiceProvider.php

@@ -4,6 +4,7 @@ namespace TorrentPier\ServiceProviders;
 
 use Pimple\Container;
 use Pimple\ServiceProviderInterface;
+use TorrentPier\Config;
 use Zend\Config\Factory;
 
 class ConfigServiceProvider implements ServiceProviderInterface
@@ -14,10 +15,10 @@ class ConfigServiceProvider implements ServiceProviderInterface
     public function register(Container $container)
     {
         $container['config'] = function ($container) {
-            $config = Factory::fromFile($container['config.file.system.main'], true);
+            $config = new Config(Factory::fromFile($container['config.file.system.main']));
 
             if (isset($container['config.file.local.main']) && file_exists($container['config.file.local.main'])) {
-                $config->merge(Factory::fromFile($container['config.file.local.main'], true));
+                $config->merge(new Config(Factory::fromFile($container['config.file.local.main'])));
             }
 
             return $config;

src/ServiceProviders/DbServiceProvider.php

@@ -4,6 +4,7 @@ namespace TorrentPier\ServiceProviders;
 
 use Pimple\Container;
 use Pimple\ServiceProviderInterface;
+use TorrentPier\Config;
 use Zend\Db\Adapter\Adapter;
 
 class DbServiceProvider implements ServiceProviderInterface
@@ -14,7 +15,13 @@ class DbServiceProvider implements ServiceProviderInterface
     public function register(Container $container)
     {
         $container['db'] = function ($container) {
-            $adapter = new Adapter($container['config.db']);
+            $config = $container['config.db'];
+
+            if ($config instanceof Config) {
+                $config = $config->toArray();
+            }
+
+            $adapter = new Adapter($config);
             unset($container['config.db']);
 
             return $adapter;