feat(shortcodes): add calc shortcode

src/flextype/core/Parsers/Shortcodes/CalcShortcode.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+ /**
+ * Flextype - Hybrid Content Management System with the freedom of a headless CMS 
+ * and with the full functionality of a traditional CMS!
+ * 
+ * Copyright (c) Sergey Romanenko (https://awilum.github.io)
+ *
+ * Licensed under The MIT License.
+ *
+ * For full copyright and license information, please see the LICENSE
+ * Redistributions of files must retain the above copyright notice.
+ */
+
+namespace Flextype\Parsers\Shortcodes;
+
+use Thunder\Shortcode\Shortcode\ShortcodeInterface;
+use ChrisKonnertz\StringCalc\StringCalc;
+use function registry;
+
+// Shortcode: calc
+// Usage: (calc:2+2)
+parsers()->shortcodes()->addHandler('calc', static function (ShortcodeInterface $s) {
+    if (! registry()->get('flextype.settings.parsers.shortcodes.shortcodes.calc.enabled')) {
+        return '';
+    }
+    
+    return (new StringCalc())->calculate(parsers()->shortcodes()->parse($s->getBBCode()));
+});

src/flextype/settings.yaml

@@ -631,7 +631,10 @@ parsers:
       field:
         enabled: true
         path: "/src/flextype/core/Parsers/Shortcodes/FieldShortcode.php"  
-        
+      calc:
+        enabled: true
+        path: "/src/flextype/core/Parsers/Shortcodes/CalcShortcode.php"  
+             
 # CORS
 #
 # CORS (Cross-origin resource sharing) allows JavaScript web apps to make HTTP requests to other domains.

tests/fixtures/settings/settings.yaml

@@ -612,7 +612,10 @@ parsers:
       field:
         enabled: true
         path: "/src/flextype/core/Parsers/Shortcodes/FieldShortcode.php"  
-           
+      calc:
+        enabled: true
+        path: "/src/flextype/core/Parsers/Shortcodes/CalcShortcode.php" 
+
 # CORS
 #
 # CORS (Cross-origin resource sharing) allows JavaScript web apps to make HTTP requests to other domains.

tests/src/flextype/core/Parsers/Shortcodes/CalcShortcodeTest.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+beforeEach(function() {
+    filesystem()->directory(PATH['project'] . '/entries')->ensureExists(0755, true);
+});
+
+afterEach(function () {
+    filesystem()->directory(PATH['project'] . '/entries')->delete();
+});
+
+test('calc shortcode', function () {
+    expect(entries()->create('foo', ['price' => '(calc:2+2)']))->toBeTrue();
+    expect(entries()->fetch('foo')['price'])->toBe('4');
+});