classes/feeditem/atom.php

   1 <?php
   2 class FeedItem_Atom extends FeedItem_Common {
   3
   4          private $baseUrl;
   5
   6          function __construct($elem, $doc, $xpath, $baseUrl) {
   7                 parent::__construct($elem, $doc, $xpath);
   8                 $this->baseUrl= $baseUrl;
   9          }
  10
  11         function get_id() {
  12                 $id = $this->elem->getElementsByTagName("id")->item(0);
  13
  14                 if ($id) {
  15                         return $id->nodeValue;
  16                 } else {
  17                         return $this->get_link();
  18                 }
  19         }
  20
  21         function get_date() {
  22                 $updated = $this->elem->getElementsByTagName("updated")->item(0);
  23
  24                 if ($updated) {
  25                         return strtotime($updated->nodeValue);
  26                 }
  27
  28                 $published = $this->elem->getElementsByTagName("published")->item(0);
  29
  30                 if ($published) {
  31                         return strtotime($published->nodeValue);
  32                 }
  33
  34                 $date = $this->xpath->query("dc:date", $this->elem)->item(0);
  35
  36                 if ($date) {
  37                         return strtotime($date->nodeValue);
  38                 }
  39         }
  40
  41         function get_link() {
  42                 $links = $this->elem->getElementsByTagName("link");
  43
  44                 foreach ($links as $link) {
  45                         if ($link && $link->hasAttribute("href") &&
  46                                 (!$link->hasAttribute("rel")
  47                                         || $link->getAttribute("rel") == "alternate"
  48                                         || $link->getAttribute("rel") == "standout")) {
  49
  50                                 return $this->baseUrl.$link->getAttribute("href");
  51                         }
  52                 }
  53         }
  54
  55         function get_title() {
  56                 $title = $this->elem->getElementsByTagName("title")->item(0);
  57
  58                 if ($title) {
  59                         return $title->nodeValue;
  60                 }
  61         }
  62
  63         function get_content() {
  64                 $content = $this->elem->getElementsByTagName("content")->item(0);
  65
  66                 if ($content) {
  67                         if ($content->hasAttribute('type')) {
  68                                 if ($content->getAttribute('type') == 'xhtml') {
  69                                         for ($i = 0; $i < $content->childNodes->length; $i++) {
  70                                                 $child = $content->childNodes->item($i);
  71
  72                                                 if ($child->hasChildNodes()) {
  73                                                         return $this->doc->saveXML($child);
  74                                                 }
  75                                         }
  76                                 }
  77                         }
  78
  79                         return $content->nodeValue;
  80                 }
  81         }
  82
  83         function get_description() {
  84                 $content = $this->elem->getElementsByTagName("summary")->item(0);
  85
  86                 if ($content) {
  87                         if ($content->hasAttribute('type')) {
  88                                 if ($content->getAttribute('type') == 'xhtml') {
  89                                         for ($i = 0; $i < $content->childNodes->length; $i++) {
  90                                                 $child = $content->childNodes->item($i);
  91
  92                                                 if ($child->hasChildNodes()) {
  93                                                         return $this->doc->saveXML($child);
  94                                                 }
  95                                         }
  96                                 }
  97                         }
  98
  99                         return $content->nodeValue;
 100                 }
 101
 102         }
 103
 104         function get_categories() {
 105                 $categories = $this->elem->getElementsByTagName("category");
 106                 $cats = array();
 107
 108                 foreach ($categories as $cat) {
 109                         if ($cat->hasAttribute("term"))
 110                                 array_push($cats, $cat->getAttribute("term"));
 111                 }
 112
 113                 $categories = $this->xpath->query("dc:subject", $this->elem);
 114
 115                 foreach ($categories as $cat) {
 116                         array_push($cats, $cat->nodeValue);
 117                 }
 118
 119                 return $cats;
 120         }
 121
 122         function get_enclosures() {
 123                 $links = $this->elem->getElementsByTagName("link");
 124
 125                 $encs = array();
 126
 127                 foreach ($links as $link) {
 128                         if ($link && $link->hasAttribute("href") && $link->hasAttribute("rel")) {
 129                                 if ($link->getAttribute("rel") == "enclosure") {
 130                                         $enc = new FeedEnclosure();
 131
 132                                         $enc->type = $link->getAttribute("type");
 133                                         $enc->link = $link->getAttribute("href");
 134                                         $enc->length = $link->getAttribute("length");
 135
 136                                         array_push($encs, $enc);
 137                                 }
 138                         }
 139                 }
 140
 141                 $enclosures = $this->xpath->query("media:content", $this->elem);
 142
 143                 foreach ($enclosures as $enclosure) {
 144                         $enc = new FeedEnclosure();
 145
 146                         $enc->type = $enclosure->getAttribute("type");
 147                         $enc->link = $enclosure->getAttribute("url");
 148                         $enc->length = $enclosure->getAttribute("length");
 149
 150                         array_push($encs, $enc);
 151                 }
 152
 153                 return $encs;
 154         }
 155
 156 }
 157 ?>