plugins/af_zz_imgsetsizes/init.php

   1 <?php
   2 class Af_Zz_ImgSetSizes extends Plugin {
   3         private $host;
   4
   5         function about() {
   6                 return array(1.0,
   7                         "Set width/height attributes for images in articles (requires CURL and GD)",
   8                         "fox");
   9         }
  10
  11         function init($host) {
  12                 $this->host = $host;
  13
  14                 if (function_exists("curl_init") && function_exists("getimagesize")) {
  15                         $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  16                 }
  17         }
  18
  19         function hook_article_filter($article) {
  20
  21                 if (defined('NO_CURL') || !function_exists("curl_init"))
  22                         return $article;
  23
  24                 $charset_hack = '<head>
  25                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  26                 </head>';
  27
  28                 $doc = new DOMDocument();
  29                 $doc->loadHTML($charset_hack . $article["content"]);
  30
  31                 $found = false;
  32
  33                 if ($doc) {
  34                         $xpath = new DOMXpath($doc);
  35
  36                         $images = $xpath->query('(//img[@src])');
  37
  38                         foreach ($images as $img) {
  39                                 $src = $img->getAttribute("src");
  40
  41                                 $ch = curl_init($src);
  42                                 curl_setopt($ch, CURLOPT_HEADER, 0);
  43                                 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  44                                 curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
  45                                 curl_setopt($ch, CURLOPT_RANGE, "0-32768");
  46
  47                                 @$result = curl_exec($ch);
  48                                 $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  49
  50                                 if ($result && ($http_code == 200 || $http_code == 206)) {
  51                                         $filename = tempnam(sys_get_temp_dir(), "ttsizecheck");
  52
  53                                         if ($filename) {
  54                                                 $fh = fopen($filename, "w");
  55                                                 if ($fh) {
  56                                                         fwrite($fh, $result);
  57                                                         fclose($fh);
  58
  59                                                         @$info = getimagesize($filename);
  60
  61                                                         if ($info && $info[0] > 0 && $info[1] > 0) {
  62                                                                 $img->setAttribute("width", $info[0]);
  63                                                                 $img->setAttribute("height", $info[1]);
  64                                                                 $found = true;
  65                                                         }
  66
  67                                                         unlink($filename);
  68                                                 }
  69                                         }
  70                                 }
  71                         }
  72
  73                         if ($found) {
  74                                 $doc->removeChild($doc->firstChild); //remove doctype
  75                                 $article["content"] = $doc->saveHTML();
  76                         }
  77                 }
  78
  79                 return $article;
  80
  81         }
  82
  83
  84         function api_version() {
  85                 return 2;
  86         }
  87
  88 }
  89 ?>