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                 $owner_uid = $article["owner_uid"];
  22
  23                 $charset_hack = '<head>
  24                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  25                 </head>';
  26
  27                 $doc = new DOMDocument();
  28                 $doc->loadHTML($charset_hack . $article["content"]);
  29
  30                 $found = false;
  31
  32                 if ($doc) {
  33                         $xpath = new DOMXpath($doc);
  34
  35                         $images = $xpath->query('(//img[@src])');
  36
  37                         foreach ($images as $img) {
  38                                 $src = $img->getAttribute("src");
  39
  40                                 $ch = curl_init($src);
  41                                 curl_setopt($ch, CURLOPT_HEADER, 0);
  42                                 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  43                                 curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
  44                                 curl_setopt($ch, CURLOPT_RANGE, "0-32768");
  45
  46                                 @$result = curl_exec($ch);
  47                                 $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  48
  49                                 if ($result && ($http_code == 200 || $http_code == 206)) {
  50                                         $filename = tempnam(sys_get_temp_dir(), "ttsizecheck");
  51
  52                                         if ($filename) {
  53                                                 $fh = fopen($filename, "w");
  54                                                 if ($fh) {
  55                                                         fwrite($fh, $result);
  56                                                         fclose($fh);
  57
  58                                                         @$info = getimagesize($filename);
  59
  60                                                         if ($info && $info[0] > 0 && $info[1] > 0) {
  61                                                                 $img->setAttribute("width", $info[0]);
  62                                                                 $img->setAttribute("height", $info[1]);
  63                                                                 $found = true;
  64                                                         }
  65
  66                                                         unlink($filename);
  67                                                 }
  68                                         }
  69                                 }
  70                         }
  71
  72                         if ($found) {
  73                                 $doc->removeChild($doc->firstChild); //remove doctype
  74                                 $article["content"] = $doc->saveHTML();
  75                         }
  76                 }
  77
  78                 return $article;
  79
  80         }
  81
  82
  83         function api_version() {
  84                 return 2;
  85         }
  86
  87 }
  88 ?>