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 $contentA->c14n();
  75                 }
  76
  77                 if ($contentB && !$contentA) {
  78                         return $contentB->c14n();
  79                 }
  80
  81                 if ($contentA && $contentB) {
  82                         return mb_strlen($contentA->nodeValue) > mb_strlen($contentB->nodeValue) ?
  83                                 $contentA->c14n() : $contentB->c14n();
  84                 }
  85         }
  86
  87         function get_description() {
  88                 $summary = $this->elem->getElementsByTagName("description")->item(0);
  89
  90                 if ($summary) {
  91                         return $summary->c14n();
  92                 }
  93         }
  94
  95         function get_categories() {
  96                 $categories = $this->elem->getElementsByTagName("category");
  97                 $cats = array();
  98
  99                 foreach ($categories as $cat) {
 100                         array_push($cats, trim($cat->nodeValue));
 101                 }
 102
 103                 $categories = $this->xpath->query("dc:subject", $this->elem);
 104
 105                 foreach ($categories as $cat) {
 106                         array_push($cats, trim($cat->nodeValue));
 107                 }
 108
 109                 return $cats;
 110         }
 111
 112         function get_enclosures() {
 113                 $enclosures = $this->elem->getElementsByTagName("enclosure");
 114
 115                 $encs = array();
 116
 117                 foreach ($enclosures as $enclosure) {
 118                         $enc = new FeedEnclosure();
 119
 120                         $enc->type = $enclosure->getAttribute("type");
 121                         $enc->link = $enclosure->getAttribute("url");
 122                         $enc->length = $enclosure->getAttribute("length");
 123                         $enc->height = $enclosure->getAttribute("height");
 124                         $enc->width = $enclosure->getAttribute("width");
 125
 126                         array_push($encs, $enc);
 127                 }
 128
 129                 $enclosures = $this->xpath->query("media:content", $this->elem);
 130
 131                 foreach ($enclosures as $enclosure) {
 132                         $enc = new FeedEnclosure();
 133
 134                         $enc->type = $enclosure->getAttribute("type");
 135                         $enc->link = $enclosure->getAttribute("url");
 136                         $enc->length = $enclosure->getAttribute("length");
 137                         $enc->height = $enclosure->getAttribute("height");
 138                         $enc->width = $enclosure->getAttribute("width");
 139
 140                         $desc = $this->xpath->query("media:description", $enclosure)->item(0);
 141                         if ($desc) $enc->title = strip_tags($desc->nodeValue);
 142
 143                         array_push($encs, $enc);
 144                 }
 145
 146
 147                 $enclosures = $this->xpath->query("media:group", $this->elem);
 148
 149                 foreach ($enclosures as $enclosure) {
 150                         $enc = new FeedEnclosure();
 151
 152                         $content = $this->xpath->query("media:content", $enclosure)->item(0);
 153
 154                         if ($content) {
 155                                 $enc->type = $content->getAttribute("type");
 156                                 $enc->link = $content->getAttribute("url");
 157                                 $enc->length = $content->getAttribute("length");
 158                                 $enc->height = $content->getAttribute("height");
 159                                 $enc->width = $content->getAttribute("width");
 160
 161                                 $desc = $this->xpath->query("media:description", $content)->item(0);
 162                                 if ($desc) {
 163                                         $enc->title = strip_tags($desc->nodeValue);
 164                                 } else {
 165                                         $desc = $this->xpath->query("media:description", $enclosure)->item(0);
 166                                         if ($desc) $enc->title = strip_tags($desc->nodeValue);
 167                                 }
 168
 169                                 array_push($encs, $enc);
 170                         }
 171                 }
 172
 173                 $enclosures = $this->xpath->query("media:thumbnail", $this->elem);
 174
 175                 foreach ($enclosures as $enclosure) {
 176                         $enc = new FeedEnclosure();
 177
 178                         $enc->type = "image/generic";
 179                         $enc->link = $enclosure->getAttribute("url");
 180                         $enc->height = $enclosure->getAttribute("height");
 181                         $enc->width = $enclosure->getAttribute("width");
 182
 183                         array_push($encs, $enc);
 184                 }
 185
 186                 return $encs;
 187         }
 188
 189 }
 190 ?>