Move functions for InkyExtension

extra/inky-extra/InkyExtension.php

@@ -20,12 +20,15 @@ class InkyExtension extends AbstractExtension
     public function getFilters()
     {
         return [
-            new TwigFilter('inky_to_html', 'Twig\\Extra\\Inky\\twig_inky', ['is_safe' => ['html']]),
+            new TwigFilter('inky_to_html', [self::class, 'inky'], ['is_safe' => ['html']]),
         ];
     }
-}
 
-function twig_inky(string $body): string
-{
-    return false === ($html = Pinky\transformString($body)->saveHTML()) ? '' : $html;
+    /**
+     * @internal
+     */
+    public static function inky(string $body): string
+    {
+        return false === ($html = Pinky\transformString($body)->saveHTML()) ? '' : $html;
+    }
 }

extra/inky-extra/Resources/functions.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Twig\Extra\Inky;
+
+/**
+ * @internal
+ * @deprecated since Twig 3.9.0
+ */
+function twig_inky(string $body): string
+{
+    trigger_deprecation('twig/inky-extra', '3.9.0', 'Using the internal "%s" function is deprecated.', __FUNCTION__);
+
+    return InkyExtension::inky($body);
+}

extra/inky-extra/Tests/LegacyFunctionsTest.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Twig\Extra\Inky\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Twig\Extra\Inky\InkyExtension;
+use function Twig\Extra\Inky\twig_inky;
+
+/**
+ * @group legacy
+ */
+class LegacyFunctionsTest extends TestCase
+{
+    public function testInlineCss()
+    {
+        $this->assertSame(InkyExtension::inky('<p>Foo</p>'), twig_inky('<p>Foo</p>'));
+    }
+}

extra/inky-extra/composer.json

@@ -16,6 +16,7 @@
     ],
     "require": {
         "php": ">=7.2.5",
+        "symfony/deprecation-contracts": "^2.5|^3",
         "lorenzo/pinky": "^1.0.5",
         "twig/twig": "^3.0"
     },
@@ -23,6 +24,7 @@
         "symfony/phpunit-bridge": "^6.4|^7.0"
     },
     "autoload": {
+        "files": [ "Resources/functions.php" ],
         "psr-4" : { "Twig\\Extra\\Inky\\" : "" },
         "exclude-from-classmap": [
             "/Tests/"