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