Add support for inheritance in neon translation files

src/Loader/NeonFileLoader.php

@@ -19,6 +19,11 @@
 class NeonFileLoader extends \Symfony\Component\Translation\Loader\ArrayLoader implements \Symfony\Component\Translation\Loader\LoaderInterface
 {
 
+	/**
+	 * @internal
+	 */
+	const INCLUDES_KEY = 'includes';
+
 	/**
 	 * {@inheritdoc}
 	 */
@@ -43,6 +48,8 @@ public function load($resource, $locale, $domain = 'messages')
 			$messages = [];
 		}
 
+		$messages = $this->recursiveLoadResources($resource, $messages);
+
 		if (!is_array($messages)) {
 			throw new \Symfony\Component\Translation\Exception\InvalidResourceException(sprintf('The file "%s" must contain a Neon array.', $resource));
 		}
@@ -53,4 +60,28 @@ public function load($resource, $locale, $domain = 'messages')
 		return $catalogue;
 	}
 
+	/**
+	 * @param string $resource
+	 * @param array $messages
+	 * @return array
+	 */
+	private function recursiveLoadResources($resource, array $messages)
+	{
+		if (isset($messages[self::INCLUDES_KEY])) {
+			foreach ($messages[self::INCLUDES_KEY] as $include) {
+				if (!preg_match('#([a-z]:)?[/\\\\]#Ai', $include)) {
+					$include = dirname($resource) . '/' . $include;
+				}
+
+				$parent = array_filter(Neon::decode(file_get_contents($include)));
+				$parent = $this->recursiveLoadResources($include, $parent);
+				$messages = array_merge($parent, array_filter($messages));
+			}
+
+			unset($messages[self::INCLUDES_KEY]);
+		}
+
+		return $messages;
+	}
+
 }

tests/KdybyTests/Translation/ExtensionTest.phpt

@@ -29,6 +29,7 @@ class ExtensionTest extends \KdybyTests\Translation\TestCase
 		Assert::true($translator instanceof SymfonyTranslator);
 
 		Assert::same('Ahoj světe', $translator->translate('homepage.hello', NULL, [], 'front', 'cs'));
+		Assert::same('Default ahoj světe', $translator->translate('homepage.hello2', NULL, [], 'front', 'cs'));
 		Assert::same('Hello world', $translator->translate('homepage.hello', NULL, [], 'front', 'en'));
 
 		Assert::same('front.not.found', $translator->translate('front.not.found'));

tests/KdybyTests/Translation/TranslateMacrosTest.phpt

@@ -63,7 +63,11 @@ Hello Peter|Helloes Peter
 
 front.missingKey.namedHelloCounting
 front.missingKey.namedHelloCounting
-front.missingKey.namedHelloCounting' . "\n", $this->template->__toString());
+front.missingKey.namedHelloCounting
+
+Default ahoj světe
+Default ahoj Peter
+Default Helloes Peter' . "\n", $this->template->__toString());
 	}
 
 	public function testRenderTranslateNoescape()

tests/KdybyTests/Translation/data/files/Homepage.default.latte

@@ -17,3 +17,7 @@
 {_front.missingKey.namedHelloCounting, 3, NULL, NULL, 'en'}
 {_front.missingKey.namedHelloCounting, 3, array('name' => 'Peter'), NULL, 'en'}
 {_front.missingKey.namedHelloCounting, array('name' => 'Peter'), NULL, 'en'}
+
+{_front.homepage.hello2, 3}
+{_front.homepage.namedHello2, [name => 'Peter']}
+{_front.homepage.namedHelloCounting2, 3, array('name' => 'Peter'), NULL, 'en'}

tests/KdybyTests/Translation/lang/default.cs_CZ.neon

@@ -0,0 +1,4 @@
+homepage:
+	hello2: Default ahoj světe
+	namedHello2: default ahoj %name%
+	namedHelloCounting2: Default ahoj %name%|Hola %name%

tests/KdybyTests/Translation/lang/front.cs_CZ.neon

@@ -1,3 +1,6 @@
+includes:
+	- default.cs_CZ.neon
+
 homepage:
 	hello: Ahoj světe
 	namedHello: Ahoj %name%