Initial commit.

Author: Denis Brumann

.gitignore

@@ -0,0 +1,2 @@
+/vendor
+/composer.lock

README.md

@@ -0,0 +1,34 @@
+TwigEvalExtension
+=================
+
+One of the goals of twig is to limit the amount of logic in your templates.
+Unfortunately you won't be able to do all sorts of stuff you can do with PHP.
+To regain that power you can use TwigEvalExtension. Just write your php code
+inside an `eval()` template function and it gets passed to PHP's eval and you
+will get the result.
+
+Installation
+------------
+
+You can install the extension by using composer require.
+
+Tests
+-----
+
+Just run
+
+```
+phpunit tests/Twig/EvalExtensionTest.php
+```
+
+No pesky phpunit.xml needed.
+
+Contribution
+------------
+
+Please don't.
+
+Known Issues
+------------
+
+It's eval in your templates. What could possibly go wrong?!

composer.json

@@ -0,0 +1,22 @@
+{
+    "name": "jaem3l/twig-eval-extension",
+    "description": "Provides eval as a function in your twig templates.",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Denis Brumann",
+            "email": "denis.brumann@sensiolabs.de"
+        }
+    ],
+    "autoload": {
+        "psr-4": {
+            "Brumann\\Twig\\": "src/Twig"
+        }
+    },
+    "require": {},
+    "require-dev": {
+        "twig/twig": "^2.4",
+        "phpunit/phpunit": "^6.4"
+    }
+}

src/Twig/EvalExtension.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Brumann\Twig;
+
+class EvalExtension extends \Twig_Extension
+{
+    public function getFunctions()
+    {
+        return [
+            new \Twig_Function(
+                'eval',
+                function (string $code) {
+                    return eval($code);
+                }
+            )
+        ];
+    }
+}

tests/Twig/EvalExtensionTest.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Brumann\Twig\Tests;
+
+use Brumann\Twig\EvalExtension;
+use PHPUnit\Framework\TestCase;
+
+class EvalExtensionTest extends TestCase
+{
+    public function testSimpleEval()
+    {
+        $templates = [
+            'simple_eval' => '{{ eval("echo 1+1;") }}',
+        ];
+
+        $loader = new \Twig_Loader_Array($templates);
+        $twig = new \Twig_Environment($loader);
+        $twig->addExtension(new EvalExtension());
+
+        $output = $twig->render('simple_eval');
+
+        $this->assertSame('2', $output);
+    }
+
+    public function testNestedEval()
+    {
+        $templates = [
+            'nested_eval' => '{{ eval("eval(\"echo 1+2;\");") }}',
+        ];
+
+        $loader = new \Twig_Loader_Array($templates);
+        $twig = new \Twig_Environment($loader);
+        $twig->addExtension(new EvalExtension());
+
+        $output = $twig->render('nested_eval');
+
+        $this->assertSame('3', $output);
+    }
+}