src/Render/FriendicaSmartyEngine.php

   1 <?php
   2 /**
   3  * @file src/Render/FriendicaSmartyEngine.php
   4  */
   5 namespace Friendica\Render;
   6
   7 use Friendica\Core\Hook;
   8 use Friendica\DI;
   9
  10 /**
  11  * Smarty implementation of the Friendica template engine interface
  12  *
  13  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  14  */
  15 class FriendicaSmartyEngine implements ITemplateEngine
  16 {
  17         static $name = "smarty3";
  18
  19         public function __construct()
  20         {
  21                 if (!is_writable(__DIR__ . '/../../view/smarty3/')) {
  22                         echo "<b>ERROR:</b> folder <tt>view/smarty3/</tt> must be writable by webserver.";
  23                         exit();
  24                 }
  25         }
  26
  27         // ITemplateEngine interface
  28         public function replaceMacros($s, $r)
  29         {
  30                 $template = '';
  31                 if (gettype($s) === 'string') {
  32                         $template = $s;
  33                         $s = new FriendicaSmarty();
  34                 }
  35
  36                 $r['$APP'] = DI::app();
  37
  38                 // "middleware": inject variables into templates
  39                 $arr = [
  40                         "template" => basename($s->filename),
  41                         "vars" => $r
  42                 ];
  43                 Hook::callAll("template_vars", $arr);
  44                 $r = $arr['vars'];
  45
  46                 foreach ($r as $key => $value) {
  47                         if ($key[0] === '$') {
  48                                 $key = substr($key, 1);
  49                         }
  50
  51                         $s->assign($key, $value);
  52                 }
  53                 return $s->parsed($template);
  54         }
  55
  56         public function getTemplateFile($file, $root = '')
  57         {
  58                 $a = DI::app();
  59                 $template = new FriendicaSmarty();
  60
  61                 // Make sure $root ends with a slash /
  62                 if ($root !== '' && substr($root, -1, 1) !== '/') {
  63                         $root = $root . '/';
  64                 }
  65
  66                 $theme = $a->getCurrentTheme();
  67                 $filename = $template::SMARTY3_TEMPLATE_FOLDER . '/' . $file;
  68
  69                 if (file_exists("{$root}view/theme/$theme/$filename")) {
  70                         $template_file = "{$root}view/theme/$theme/$filename";
  71                 } elseif (!empty($a->theme_info['extends']) && file_exists(sprintf('%sview/theme/%s}/%s', $root, $a->theme_info['extends'], $filename))) {
  72                         $template_file = sprintf('%sview/theme/%s}/%s', $root, $a->theme_info['extends'], $filename);
  73                 } elseif (file_exists("{$root}/$filename")) {
  74                         $template_file = "{$root}/$filename";
  75                 } else {
  76                         $template_file = "{$root}view/$filename";
  77                 }
  78
  79                 $template->filename = $template_file;
  80
  81                 return $template;
  82         }
  83 }