classes/feeditem/atom.php

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