feat(shortcodes): add const shortcode

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

@@ -0,0 +1,40 @@
+<?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 function registry;
+
+// Shortcode: const
+// Usage: (const:PROJECT_DIR) 
+parsers()->shortcodes()->addHandler('const', static function (ShortcodeInterface $s) {
+    if (! registry()->get('flextype.settings.parsers.shortcodes.shortcodes.const.enabled')) {
+        return '';
+    }
+
+    if ($s->getBBCode() !== null) {
+        $const = parsers()->shortcodes()->parse($s->getBBCode());
+
+        if (defined($const)) {
+            return constant($const);
+        } else {
+            return '';
+        }
+    }
+
+    return '';
+});

src/flextype/settings.yaml

@@ -661,6 +661,9 @@ parsers:
       uuid:
         enabled: true
         path: "/src/flextype/core/Parsers/Shortcodes/UuidShortcode.php"
+      const:
+        enabled: true
+        path: "/src/flextype/core/Parsers/Shortcodes/ConstShortcode.php"
       var:
         enabled: true
         path: "/src/flextype/core/Parsers/Shortcodes/VarShortcode.php"

tests/fixtures/settings/settings.yaml

@@ -645,6 +645,9 @@ parsers:
       uuid:
         enabled: true
         path: "/src/flextype/core/Parsers/Shortcodes/UuidShortcode.php"
+      const:
+        enabled: true
+        path: "/src/flextype/core/Parsers/Shortcodes/ConstShortcode.php"
       var:
         enabled: true
         path: "/src/flextype/core/Parsers/Shortcodes/VarShortcode.php"

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

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+beforeEach(function() {
+    filesystem()->directory(PATH['project'] . '/entries')->ensureExists(0755, true);
+});
+
+afterEach(function () {
+    filesystem()->directory(PATH['project'] . '/entries')->delete();
+});
+
+test('const shortcode', function () {
+    define('foo', 'Foo');
+    expect(entries()->create('const', ['test' => '(const:foo)']))->toBeTrue();
+    expect(entries()->fetch('const')['test'])->toBe('Foo');
+});