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)", $link);
  44
  45                                 if ($base)
  46                                         return rewrite_relative_url($base, trim($link->getAttribute("href")));
  47                                 else
  48                                         return trim($link->getAttribute("href"));
  49
  50                         }
  51                 }
  52         }
  53
  54         function get_title() {
  55                 $title = $this->elem->getElementsByTagName("title")->item(0);
  56
  57                 if ($title) {
  58                         return trim($title->nodeValue);
  59                 }
  60         }
  61
  62         function get_content() {
  63                 $content = $this->elem->getElementsByTagName("content")->item(0);
  64
  65                 if ($content) {
  66                         if ($content->hasAttribute('type')) {
  67                                 if ($content->getAttribute('type') == 'xhtml') {
  68                                         for ($i = 0; $i < $content->childNodes->length; $i++) {
  69                                                 $child = $content->childNodes->item($i);
  70
  71                                                 if ($child->hasChildNodes()) {
  72                                                         return $this->doc->saveXML($child);
  73                                                 }
  74                                         }
  75                                 }
  76                         }
  77
  78                         return $content->nodeValue;
  79                 }
  80         }
  81
  82         function get_description() {
  83                 $content = $this->elem->getElementsByTagName("summary")->item(0);
  84
  85                 if ($content) {
  86                         if ($content->hasAttribute('type')) {
  87                                 if ($content->getAttribute('type') == 'xhtml') {
  88                                         for ($i = 0; $i < $content->childNodes->length; $i++) {
  89                                                 $child = $content->childNodes->item($i);
  90
  91                                                 if ($child->hasChildNodes()) {
  92                                                         return $this->doc->saveXML($child);
  93                                                 }
  94                                         }
  95                                 }
  96                         }
  97
  98                         return $content->nodeValue;
  99                 }
 100
 101         }
 102
 103         function get_categories() {
 104                 $categories = $this->elem->getElementsByTagName("category");
 105                 $cats = array();
 106
 107                 foreach ($categories as $cat) {
 108                         if ($cat->hasAttribute("term"))
 109                                 array_push($cats, trim($cat->getAttribute("term")));
 110                 }
 111
 112                 $categories = $this->xpath->query("dc:subject", $this->elem);
 113
 114                 foreach ($categories as $cat) {
 115                         array_push($cats, trim($cat->nodeValue));
 116                 }
 117
 118                 return $cats;
 119         }
 120
 121         function get_enclosures() {
 122                 $links = $this->elem->getElementsByTagName("link");
 123
 124                 $encs = array();
 125
 126                 foreach ($links as $link) {
 127                         if ($link && $link->hasAttribute("href") && $link->hasAttribute("rel")) {
 128                                 if ($link->getAttribute("rel") == "enclosure") {
 129                                         $enc = new FeedEnclosure();
 130
 131                                         $enc->type = $link->getAttribute("type");
 132                                         $enc->link = $link->getAttribute("href");
 133                                         $enc->length = $link->getAttribute("length");
 134
 135                                         array_push($encs, $enc);
 136                                 }
 137                         }
 138                 }
 139
 140                 $enclosures = $this->xpath->query("media:content", $this->elem);
 141
 142                 foreach ($enclosures as $enclosure) {
 143                         $enc = new FeedEnclosure();
 144
 145                         $enc->type = $enclosure->getAttribute("type");
 146                         $enc->link = $enclosure->getAttribute("url");
 147                         $enc->length = $enclosure->getAttribute("length");
 148
 149                         $desc = $this->xpath->query("media:description", $enclosure)->item(0);
 150                         if ($desc) $enc->title = strip_tags($desc->nodeValue);
 151
 152                         array_push($encs, $enc);
 153                 }
 154
 155
 156                 $enclosures = $this->xpath->query("media:group", $this->elem);
 157
 158                 foreach ($enclosures as $enclosure) {
 159                         $enc = new FeedEnclosure();
 160
 161                         $content = $this->xpath->query("media:content", $enclosure)->item(0);
 162
 163                         if ($content) {
 164                                 $enc->type = $content->getAttribute("type");
 165                                 $enc->link = $content->getAttribute("url");
 166                                 $enc->length = $content->getAttribute("length");
 167
 168                                 $desc = $this->xpath->query("media:description", $content)->item(0);
 169                                 if ($desc) {
 170                                         $enc->title = strip_tags($desc->nodeValue);
 171                                 } else {
 172                                         $desc = $this->xpath->query("media:description", $enclosure)->item(0);
 173                                         if ($desc) $enc->title = strip_tags($desc->nodeValue);
 174                                 }
 175
 176                                 array_push($encs, $enc);
 177                         }
 178                 }
 179
 180                 $enclosures = $this->xpath->query("media:thumbnail", $this->elem);
 181
 182                 foreach ($enclosures as $enclosure) {
 183                         $enc = new FeedEnclosure();
 184
 185                         $enc->type = "image/generic";
 186                         $enc->link = $enclosure->getAttribute("url");
 187
 188                         array_push($encs, $enc);
 189                 }
 190
 191                 return $encs;
 192         }
 193
 194 }
 195 ?>