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wp-content/plugins/mailpoet/lib/Twig/Handlebars.php

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+<?php // phpcs:ignore SlevomatCodingStandard.TypeHints.DeclareStrictTypes.DeclareStrictTypesMissing
+
+namespace MailPoet\Twig;
+
+if (!defined('ABSPATH')) exit;
+
+
+use MailPoetVendor\Twig\Extension\AbstractExtension;
+use MailPoetVendor\Twig\Extension\CoreExtension;
+use MailPoetVendor\Twig\TwigFunction;
+
+class Handlebars extends AbstractExtension {
+  public function getFunctions() {
+    return [
+      new TwigFunction(
+        'partial',
+        [
+          $this,
+          'generatePartial',
+        ],
+        [
+          'needs_environment' => true,
+          'needs_context' => true,
+          'is_safe' => ['all'],
+        ]
+      ),
+    ];
+  }
+
+  public function generatePartial($env, $context) {
+    // get arguments (minus env & $context)
+    /** @var array{0:string, 1:array|string, 2:string} $args */
+    $args = array_slice(func_get_args(), 2);
+    $argsCount = count($args);
+
+    // default values
+    $alias = null;
+
+    switch ($argsCount) {
+      case 2:
+        list($id, $file) = $args;
+        break;
+      case 3:
+        list($id, $file, $alias) = $args;
+        break;
+      default:
+        return;
+    }
+
+    $renderedTemplate = CoreExtension::include($env, $context, $file);
+
+    $output = <<<EOL
+<script id="$id" type="text/x-handlebars-template">
+  $renderedTemplate
+</script>
+EOL;
+
+    if ($alias !== null) {
+      $output .= <<<EOL
+<script type="text/javascript">
+jQuery(function($) {
+  $(function() {
+    Handlebars.registerPartial(
+      '$alias',
+      jQuery('#$id').html()
+    );
+  });
+});
+</script>
+EOL;
+    }
+    return $output;
+  }
+}