classes/feeditem/rss.php

   1 <?php
   2 class FeedItem_RSS extends FeedItem_Common {
   3         function get_id() {
   4                 $id = $this->elem->getElementsByTagName("guid")->item(0);
   5
   6                 if ($id) {
   7                         return $id->nodeValue;
   8                 } else {
   9                         return $this->get_link();
  10                 }
  11         }
  12
  13         function get_date() {
  14                 $pubDate = $this->elem->getElementsByTagName("pubDate")->item(0);
  15
  16                 if ($pubDate) {
  17                         return strtotime($pubDate->nodeValue);
  18                 }
  19
  20                 $date = $this->xpath->query("dc:date", $this->elem)->item(0);
  21
  22                 if ($date) {
  23                         return strtotime($date->nodeValue);
  24                 }
  25         }
  26
  27         function get_link() {
  28                 $links = $this->xpath->query("atom:link", $this->elem);
  29
  30                 foreach ($links as $link) {
  31                         if ($link && $link->hasAttribute("href") &&
  32                                 (!$link->hasAttribute("rel")
  33                                         || $link->getAttribute("rel") == "alternate"
  34                                         || $link->getAttribute("rel") == "standout")) {
  35
  36                                 return trim($link->getAttribute("href"));
  37                         }
  38                 }
  39
  40                 $link = $this->elem->getElementsByTagName("guid")->item(0);
  41
  42                 if ($link && $link->hasAttributes() && $link->getAttribute("isPermaLink") == "true") {
  43                         return trim($link->nodeValue);
  44                 }
  45
  46                 $link = $this->elem->getElementsByTagName("link")->item(0);
  47
  48                 if ($link) {
  49                         return trim($link->nodeValue);
  50                 }
  51         }
  52
  53         function get_title() {
  54                 $title = $this->xpath->query("title", $this->elem)->item(0);
  55
  56                 if ($title) {
  57                         return trim($title->nodeValue);
  58                 }
  59
  60                 // if the document has a default namespace then querying for
  61                 // title would fail because of reasons so let's try the old way
  62                 $title = $this->elem->getElementsByTagName("title")->item(0);
  63
  64                 if ($title) {
  65                         return trim($title->nodeValue);
  66                 }
  67         }
  68
  69         function get_content() {
  70                 $contentA = $this->xpath->query("content:encoded", $this->elem)->item(0);
  71                 $contentB = $this->elem->getElementsByTagName("description")->item(0);
  72
  73                 if ($contentA && !$contentB) {
  74                         return $this->subtree_or_text($contentA);
  75                 }
  76
  77
  78                 if ($contentB && !$contentA) {
  79                         return $this->subtree_or_text($contentB);
  80                 }
  81
  82                 if ($contentA && $contentB) {
  83                         $resultA = $this->subtree_or_text($contentA);
  84                         $resultB = $this->subtree_or_text($contentB);
  85
  86                         return mb_strlen($resultA) > mb_strlen($resultB) ? $resultA : $resultB;
  87                 }
  88         }
  89
  90         function get_description() {
  91                 $summary = $this->elem->getElementsByTagName("description")->item(0);
  92
  93                 if ($summary) {
  94                         return $summary->nodeValue;
  95                 }
  96         }
  97
  98         function get_categories() {
  99                 $categories = $this->elem->getElementsByTagName("category");
 100                 $cats = array();
 101
 102                 foreach ($categories as $cat) {
 103                         array_push($cats, trim($cat->nodeValue));
 104                 }
 105
 106                 $categories = $this->xpath->query("dc:subject", $this->elem);
 107
 108                 foreach ($categories as $cat) {
 109                         array_push($cats, trim($cat->nodeValue));
 110                 }
 111
 112                 return $cats;
 113         }
 114
 115         function get_enclosures() {
 116                 $enclosures = $this->elem->getElementsByTagName("enclosure");
 117
 118                 $encs = array();
 119
 120                 foreach ($enclosures as $enclosure) {
 121                         $enc = new FeedEnclosure();
 122
 123                         $enc->type = $enclosure->getAttribute("type");
 124                         $enc->link = $enclosure->getAttribute("url");
 125                         $enc->length = $enclosure->getAttribute("length");
 126                         $enc->height = $enclosure->getAttribute("height");
 127                         $enc->width = $enclosure->getAttribute("width");
 128
 129                         array_push($encs, $enc);
 130                 }
 131
 132                 $encs = array_merge($encs, parent::get_enclosures());
 133
 134                 return $encs;
 135         }
 136
 137         function get_language() {
 138                 $languages = $this->doc->getElementsByTagName('language');
 139
 140                 if (count($languages) == 0) {
 141                         return "";
 142                 }
 143
 144                 return $languages[0]->textContent;
 145         }
 146
 147 }