interface/modules/zend_modules/library/Zend/Feed/Reader/Extension/DublinCore/Entry.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Feed\Reader\Extension\DublinCore;
  11
  12 use DateTime;
  13 use Zend\Feed\Reader;
  14 use Zend\Feed\Reader\Collection;
  15 use Zend\Feed\Reader\Extension;
  16
  17 class Entry extends Extension\AbstractEntry
  18 {
  19     /**
  20      * Get an author entry
  21      *
  22      * @param int $index
  23      * @return string
  24      */
  25     public function getAuthor($index = 0)
  26     {
  27         $authors = $this->getAuthors();
  28
  29         if (isset($authors[$index])) {
  30             return $authors[$index];
  31         }
  32
  33         return null;
  34     }
  35
  36     /**
  37      * Get an array with feed authors
  38      *
  39      * @return array
  40      */
  41     public function getAuthors()
  42     {
  43         if (array_key_exists('authors', $this->data)) {
  44             return $this->data['authors'];
  45         }
  46
  47         $authors = array();
  48         $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:creator');
  49
  50         if (!$list->length) {
  51             $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:creator');
  52         }
  53         if (!$list->length) {
  54             $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:publisher');
  55
  56             if (!$list->length) {
  57                 $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:publisher');
  58             }
  59         }
  60
  61         if ($list->length) {
  62             foreach ($list as $author) {
  63                 $authors[] = array(
  64                     'name' => $author->nodeValue
  65                 );
  66             }
  67             $authors = new Collection\Author(
  68                 Reader\Reader::arrayUnique($authors)
  69             );
  70         } else {
  71             $authors = null;
  72         }
  73
  74         $this->data['authors'] = $authors;
  75
  76         return $this->data['authors'];
  77     }
  78
  79     /**
  80      * Get categories (subjects under DC)
  81      *
  82      * @return Collection\Category
  83      */
  84     public function getCategories()
  85     {
  86         if (array_key_exists('categories', $this->data)) {
  87             return $this->data['categories'];
  88         }
  89
  90         $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:subject');
  91
  92         if (!$list->length) {
  93             $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:subject');
  94         }
  95
  96         if ($list->length) {
  97             $categoryCollection = new Collection\Category;
  98             foreach ($list as $category) {
  99                 $categoryCollection[] = array(
 100                     'term' => $category->nodeValue,
 101                     'scheme' => null,
 102                     'label' => $category->nodeValue,
 103                 );
 104             }
 105         } else {
 106             $categoryCollection = new Collection\Category;
 107         }
 108
 109         $this->data['categories'] = $categoryCollection;
 110         return $this->data['categories'];
 111     }
 112
 113
 114     /**
 115      * Get the entry content
 116      *
 117      * @return string
 118      */
 119     public function getContent()
 120     {
 121         return $this->getDescription();
 122     }
 123
 124     /**
 125      * Get the entry description
 126      *
 127      * @return string
 128      */
 129     public function getDescription()
 130     {
 131         if (array_key_exists('description', $this->data)) {
 132             return $this->data['description'];
 133         }
 134
 135         $description = null;
 136         $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:description)');
 137
 138         if (!$description) {
 139             $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:description)');
 140         }
 141
 142         if (!$description) {
 143             $description = null;
 144         }
 145
 146         $this->data['description'] = $description;
 147
 148         return $this->data['description'];
 149     }
 150
 151     /**
 152      * Get the entry ID
 153      *
 154      * @return string
 155      */
 156     public function getId()
 157     {
 158         if (array_key_exists('id', $this->data)) {
 159             return $this->data['id'];
 160         }
 161
 162         $id = null;
 163         $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:identifier)');
 164
 165         if (!$id) {
 166             $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:identifier)');
 167         }
 168
 169         $this->data['id'] = $id;
 170
 171         return $this->data['id'];
 172     }
 173
 174     /**
 175      * Get the entry title
 176      *
 177      * @return string
 178      */
 179     public function getTitle()
 180     {
 181         if (array_key_exists('title', $this->data)) {
 182             return $this->data['title'];
 183         }
 184
 185         $title = null;
 186         $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:title)');
 187
 188         if (!$title) {
 189             $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:title)');
 190         }
 191
 192         if (!$title) {
 193             $title = null;
 194         }
 195
 196         $this->data['title'] = $title;
 197
 198         return $this->data['title'];
 199     }
 200
 201     /**
 202      *
 203      *
 204      * @return DateTime|null
 205      */
 206     public function getDate()
 207     {
 208         if (array_key_exists('date', $this->data)) {
 209             return $this->data['date'];
 210         }
 211
 212         $d    = null;
 213         $date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:date)');
 214
 215         if (!$date) {
 216             $date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:date)');
 217         }
 218
 219         if ($date) {
 220             $d = new DateTime($date);
 221         }
 222
 223         $this->data['date'] = $d;
 224
 225         return $this->data['date'];
 226     }
 227
 228     /**
 229      * Register DC namespaces
 230      *
 231      * @return void
 232      */
 233     protected function registerNamespaces()
 234     {
 235         $this->getXpath()->registerNamespace('dc10', 'http://purl.org/dc/elements/1.0/');
 236         $this->getXpath()->registerNamespace('dc11', 'http://purl.org/dc/elements/1.1/');
 237     }
 238 }