[Dependency Injection] Detect proper web root path based on Symfony kernel version

.gitignore

@@ -4,5 +4,6 @@
 /composer.phar
 /vendor/
 /Tests/Functional/app/web/media/cache
+/Tests/Functional/app/public/media/cache
 /.idea/
 /var/

DependencyInjection/Factory/Loader/FileSystemLoaderFactory.php

@@ -12,6 +12,7 @@
 namespace Liip\ImagineBundle\DependencyInjection\Factory\Loader;
 
 use Liip\ImagineBundle\Exception\InvalidArgumentException;
+use Liip\ImagineBundle\Utility\Framework\SymfonyFramework;
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Reference;
@@ -59,7 +60,7 @@ public function addConfiguration(ArrayNodeDefinition $builder)
                     ->end()
                     ->treatNullLike([])
                     ->treatFalseLike([])
-                    ->defaultValue(['%kernel.root_dir%/../web'])
+                    ->defaultValue([SymfonyFramework::getContainerResolvableRootWebPath()])
                     ->prototype('scalar')
                         ->cannotBeEmpty()
                     ->end()

DependencyInjection/Factory/Resolver/WebPathResolverFactory.php

@@ -11,6 +11,7 @@
 
 namespace Liip\ImagineBundle\DependencyInjection\Factory\Resolver;
 
+use Liip\ImagineBundle\Utility\Framework\SymfonyFramework;
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 
@@ -50,7 +51,7 @@ public function addConfiguration(ArrayNodeDefinition $builder)
         $builder
             ->children()
                 ->scalarNode('web_root')
-                    ->defaultValue('%kernel.root_dir%/../web')
+                    ->defaultValue(SymfonyFramework::getContainerResolvableRootWebPath())
                     ->cannotBeEmpty()
                 ->end()
                 ->scalarNode('cache_prefix')

Resources/doc/cache-resolver/web_path.rst

@@ -35,16 +35,18 @@ Configuration
         resolvers:
            profile_photos:
               web_path:
-                web_root: "%kernel.root_dir%/../web"
+                # use %kernel.project_dir%/web for Symfony prior to 4.0.0
+                web_root: "%kernel.project_dir%/public"
                 cache_prefix: "media/cache"
 
 There are several configuration options available:
 
 * ``web_root`` - must be the absolute path to you application's web root. This
   is used to determine where to put generated image files, so that apache
-  will pick them up before handing the request to Symfony2 next time they
-  are requested.
-  Default value: ``%kernel.root_dir%/../web``
+  will pick them up before handing the request to Symfony next time they
+  are requested. The default value ends with ``web`` for Symfony prior to
+  version ``4.0.0``.
+  Default value: ``%kernel.project_dir%/(public|web)``
 * ``cache_prefix`` - this is also used in the path for image generation, so
   as to not clutter your web root with cached images. For example by default,
   the images would be written to the ``web/media/cache/`` directory.

Resources/doc/configuration.rst

@@ -13,13 +13,13 @@ The default configuration for the bundle looks like this:
         resolvers:
             default:
                 web_path:
-                    web_root: ~ # %kernel.root_dir%/../web
+                    web_root: ~ # %kernel.project_dir%/public (%kernel.project_dir%/web for Symfony < 4.0.0)
                     cache_prefix: ~ # media/cache
 
         loaders:
             default:
                 filesystem:
-                    data_root: ~  # %kernel.root_dir%/../web/
+                    data_root: ~  # %kernel.project_dir%/public (%kernel.project_dir%/web for Symfony < 4.0.0)
 
         driver:               gd
         cache:                default

Tests/DependencyInjection/Factory/Loader/FileSystemLoaderFactoryTest.php

@@ -16,6 +16,7 @@
 use Liip\ImagineBundle\Tests\DependencyInjection\Factory\FactoryTestCase;
 use Liip\ImagineBundle\Tests\Functional\Fixtures\BarBundle\LiipBarBundle;
 use Liip\ImagineBundle\Tests\Functional\Fixtures\FooBundle\LiipFooBundle;
+use Liip\ImagineBundle\Utility\Framework\SymfonyFramework;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 use Symfony\Component\Config\Definition\Processor;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -252,7 +253,7 @@ public function testProcessCorrectlyOptionsOnAddConfiguration()
 
     public function testAddDefaultOptionsIfNotSetOnAddConfiguration()
     {
-        $expectedDataRoot = array('%kernel.root_dir%/../web');
+        $expectedDataRoot = array(SymfonyFramework::getContainerResolvableRootWebPath());
 
         $treeBuilder = new TreeBuilder();
         $rootNode = $treeBuilder->root('filesystem', 'array');
@@ -270,7 +271,7 @@ public function testAddDefaultOptionsIfNotSetOnAddConfiguration()
 
     public function testAddAsScalarExpectingArrayNormalizationOfConfiguration()
     {
-        $expectedDataRoot = array('%kernel.root_dir%/../web');
+        $expectedDataRoot = array(SymfonyFramework::getContainerResolvableRootWebPath());
 
         $treeBuilder = new TreeBuilder();
         $rootNode = $treeBuilder->root('filesystem', 'array');

Tests/DependencyInjection/Factory/Resolver/WebPathResolverFactoryTest.php

@@ -13,6 +13,7 @@
 
 use Liip\ImagineBundle\DependencyInjection\Factory\Resolver\ResolverFactoryInterface;
 use Liip\ImagineBundle\DependencyInjection\Factory\Resolver\WebPathResolverFactory;
+use Liip\ImagineBundle\Utility\Framework\SymfonyFramework;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 use Symfony\Component\Config\Definition\Processor;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -103,7 +104,7 @@ public function testAddDefaultOptionsIfNotSetOnAddConfiguration()
         ));
 
         $this->assertArrayHasKey('web_root', $config);
-        $this->assertEquals('%kernel.root_dir%/../web', $config['web_root']);
+        $this->assertEquals(SymfonyFramework::getContainerResolvableRootWebPath(), $config['web_root']);
 
         $this->assertArrayHasKey('cache_prefix', $config);
         $this->assertEquals('media/cache', $config['cache_prefix']);

Tests/Functional/AbstractSetupWebTestCase.php

@@ -41,7 +41,7 @@ public function setUp()
         parent::setUp();
 
         $this->client = $this->createClient();
-        $this->webRoot = self::$kernel->getContainer()->getParameter('kernel.root_dir').'/web';
+        $this->webRoot = sprintf('%s/public', self::$kernel->getContainer()->getParameter('kernel.root_dir'));
         $this->cacheRoot = $this->webRoot.'/media/cache';
         $this->filesystem = new Filesystem();
         $this->filesystem->remove($this->cacheRoot);

Tests/Functional/app/config/config.yml

@@ -29,7 +29,7 @@ liip_imagine:
 
         default:
             filesystem:
-                data_root: "%kernel.root_dir%/web"
+                data_root: "%kernel.root_dir%/public"
 
         foo:
             filesystem:
@@ -65,7 +65,7 @@ liip_imagine:
 
         default:
             web_path:
-                web_root:     "%kernel.root_dir%/web"
+                web_root:     "%kernel.root_dir%/public"
                 cache_prefix: media/cache
 
     filter_sets:

Tests/Utility/Framework/SymfonyFrameworkTest.php

@@ -11,7 +11,9 @@
 
 namespace Liip\ImagineBundle\Tests\Utility\Framework;
 
+use Liip\ImagineBundle\Tests\Filter\PasteFilterLoaderTest;
 use Liip\ImagineBundle\Utility\Framework\SymfonyFramework;
+use Symfony\Component\HttpKernel\Kernel;
 
 /**
  * @covers \Liip\ImagineBundle\Utility\Framework\SymfonyFramework
@@ -44,4 +46,12 @@ public function testHasDirectContainerBuilderLogging()
             $this->assertFalse(SymfonyFramework::hasDirectContainerBuilderLogging());
         }
     }
+
+    public function testGetContainerResolvableRootWebPath()
+    {
+        $path = SymfonyFramework::getContainerResolvableRootWebPath();
+
+        $this->assertStringStartsWith('%kernel.project_dir%/', $path);
+        $this->assertStringEndsWith(Kernel::VERSION_ID < 40000 ? 'web' : 'public', $path);
+    }
 }

Utility/Framework/SymfonyFramework.php

@@ -18,19 +18,27 @@ class SymfonyFramework
     /**
      * @return bool
      */
-    public static function hasDirectContainerBuilderLogging()
+    public static function hasDirectContainerBuilderLogging(): bool
     {
         return method_exists('\Symfony\Component\DependencyInjection\ContainerBuilder', 'log');
     }
 
+    /**
+     * @return string
+     */
+    public static function getContainerResolvableRootWebPath(): string
+    {
+        return sprintf('%%kernel.project_dir%%/%s', self::isKernelLessThan(4) ? 'web' : 'public');
+    }
+
     /**
      * @param int      $major
      * @param int|null $minor
      * @param int|null $patch
      *
      * @return bool
      */
-    public static function isKernelGreaterThanOrEqualTo($major, $minor = null, $patch = null)
+    public static function isKernelGreaterThanOrEqualTo(int $major, int $minor = null, int $patch = null): bool
     {
         return static::kernelVersionCompare('>=', $major, $minor, $patch);
     }
@@ -42,7 +50,7 @@ public static function isKernelGreaterThanOrEqualTo($major, $minor = null, $patc
      *
      * @return bool
      */
-    public static function isKernelLessThan($major, $minor = null, $patch = null)
+    public static function isKernelLessThan(int $major, int $minor = null, int $patch = null): bool
     {
         return static::kernelVersionCompare('<', $major, $minor, $patch);
     }
@@ -55,21 +63,8 @@ public static function isKernelLessThan($major, $minor = null, $patch = null)
      *
      * @return bool
      */
-    private static function kernelVersionCompare($operator, $major, $minor = null, $patch = null)
+    private static function kernelVersionCompare(string $operator, int $major, int $minor = null, int $patch = null): bool
     {
-        $vernum = $major;
-        $kernel = Kernel::MAJOR_VERSION;
-
-        if ($minor) {
-            $vernum .= '.'.$minor;
-            $kernel .= '.'.Kernel::MINOR_VERSION;
-
-            if ($patch) {
-                $vernum .= '.'.$patch;
-                $kernel .= '.'.Kernel::RELEASE_VERSION;
-            }
-        }
-
-        return version_compare($kernel, $vernum, $operator);
+        return version_compare(Kernel::VERSION_ID, sprintf("%d%'.02d%'.02d", $major, $minor ?: 0, $patch ?: 0), $operator);
     }
 }