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   1  <?php
   2  
   3  declare(strict_types=1);
   4  /**
   5   * SimplePie
   6   *
   7   * A PHP-Based RSS and Atom Feed Framework.
   8   * Takes the hard work out of managing a complete RSS/Atom solution.
   9   *
  10   * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
  11   * All rights reserved.
  12   *
  13   * Redistribution and use in source and binary forms, with or without modification, are
  14   * permitted provided that the following conditions are met:
  15   *
  16   *     * Redistributions of source code must retain the above copyright notice, this list of
  17   *       conditions and the following disclaimer.
  18   *
  19   *     * Redistributions in binary form must reproduce the above copyright notice, this list
  20   *       of conditions and the following disclaimer in the documentation and/or other materials
  21   *       provided with the distribution.
  22   *
  23   *     * Neither the name of the SimplePie Team nor the names of its contributors may be used
  24   *       to endorse or promote products derived from this software without specific prior
  25   *       written permission.
  26   *
  27   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
  28   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  29   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
  30   * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  32   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  34   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35   * POSSIBILITY OF SUCH DAMAGE.
  36   *
  37   * @package SimplePie
  38   * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
  39   * @author Ryan Parman
  40   * @author Sam Sneddon
  41   * @author Ryan McCue
  42   * @link http://simplepie.org/ SimplePie
  43   * @license http://www.opensource.org/licenses/bsd-license.php BSD License
  44   */
  45  
  46  namespace SimplePie;
  47  
  48  /**
  49   * Handles `<atom:source>`
  50   *
  51   * Used by {@see \SimplePie\Item::get_source()}
  52   *
  53   * This class can be overloaded with {@see \SimplePie::set_source_class()}
  54   *
  55   * @package SimplePie
  56   * @subpackage API
  57   */
  58  class Source implements RegistryAware
  59  {
  60      public $item;
  61      public $data = [];
  62      protected $registry;
  63  
  64      public function __construct($item, $data)
  65      {
  66          $this->item = $item;
  67          $this->data = $data;
  68      }
  69  
  70      public function set_registry(\SimplePie\Registry $registry)/* : void */
  71      {
  72          $this->registry = $registry;
  73      }
  74  
  75      public function __toString()
  76      {
  77          return md5(serialize($this->data));
  78      }
  79  
  80      public function get_source_tags($namespace, $tag)
  81      {
  82          if (isset($this->data['child'][$namespace][$tag])) {
  83              return $this->data['child'][$namespace][$tag];
  84          }
  85  
  86          return null;
  87      }
  88  
  89      public function get_base($element = [])
  90      {
  91          return $this->item->get_base($element);
  92      }
  93  
  94      public function sanitize($data, $type, $base = '')
  95      {
  96          return $this->item->sanitize($data, $type, $base);
  97      }
  98  
  99      public function get_item()
 100      {
 101          return $this->item;
 102      }
 103  
 104      public function get_title()
 105      {
 106          if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'title')) {
 107              return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
 108          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'title')) {
 109              return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
 110          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_10, 'title')) {
 111              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 112          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_090, 'title')) {
 113              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 114          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'title')) {
 115              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 116          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'title')) {
 117              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 118          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'title')) {
 119              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 120          }
 121  
 122          return null;
 123      }
 124  
 125      public function get_category($key = 0)
 126      {
 127          $categories = $this->get_categories();
 128          if (isset($categories[$key])) {
 129              return $categories[$key];
 130          }
 131  
 132          return null;
 133      }
 134  
 135      public function get_categories()
 136      {
 137          $categories = [];
 138  
 139          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'category') as $category) {
 140              $term = null;
 141              $scheme = null;
 142              $label = null;
 143              if (isset($category['attribs']['']['term'])) {
 144                  $term = $this->sanitize($category['attribs']['']['term'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 145              }
 146              if (isset($category['attribs']['']['scheme'])) {
 147                  $scheme = $this->sanitize($category['attribs']['']['scheme'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 148              }
 149              if (isset($category['attribs']['']['label'])) {
 150                  $label = $this->sanitize($category['attribs']['']['label'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 151              }
 152              $categories[] = $this->registry->create(Category::class, [$term, $scheme, $label]);
 153          }
 154          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'category') as $category) {
 155              // This is really the label, but keep this as the term also for BC.
 156              // Label will also work on retrieving because that falls back to term.
 157              $term = $this->sanitize($category['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 158              if (isset($category['attribs']['']['domain'])) {
 159                  $scheme = $this->sanitize($category['attribs']['']['domain'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 160              } else {
 161                  $scheme = null;
 162              }
 163              $categories[] = $this->registry->create(Category::class, [$term, $scheme, null]);
 164          }
 165          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'subject') as $category) {
 166              $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
 167          }
 168          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'subject') as $category) {
 169              $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
 170          }
 171  
 172          if (!empty($categories)) {
 173              return array_unique($categories);
 174          }
 175  
 176          return null;
 177      }
 178  
 179      public function get_author($key = 0)
 180      {
 181          $authors = $this->get_authors();
 182          if (isset($authors[$key])) {
 183              return $authors[$key];
 184          }
 185  
 186          return null;
 187      }
 188  
 189      public function get_authors()
 190      {
 191          $authors = [];
 192          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'author') as $author) {
 193              $name = null;
 194              $uri = null;
 195              $email = null;
 196              if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'])) {
 197                  $name = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 198              }
 199              if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
 200                  $uri = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]));
 201              }
 202              if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'])) {
 203                  $email = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 204              }
 205              if ($name !== null || $email !== null || $uri !== null) {
 206                  $authors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
 207              }
 208          }
 209          if ($author = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'author')) {
 210              $name = null;
 211              $url = null;
 212              $email = null;
 213              if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'])) {
 214                  $name = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 215              }
 216              if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'])) {
 217                  $url = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]));
 218              }
 219              if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'])) {
 220                  $email = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 221              }
 222              if ($name !== null || $email !== null || $url !== null) {
 223                  $authors[] = $this->registry->create(Author::class, [$name, $url, $email]);
 224              }
 225          }
 226          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'creator') as $author) {
 227              $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
 228          }
 229          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'creator') as $author) {
 230              $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
 231          }
 232          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'author') as $author) {
 233              $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
 234          }
 235  
 236          if (!empty($authors)) {
 237              return array_unique($authors);
 238          }
 239  
 240          return null;
 241      }
 242  
 243      public function get_contributor($key = 0)
 244      {
 245          $contributors = $this->get_contributors();
 246          if (isset($contributors[$key])) {
 247              return $contributors[$key];
 248          }
 249  
 250          return null;
 251      }
 252  
 253      public function get_contributors()
 254      {
 255          $contributors = [];
 256          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'contributor') as $contributor) {
 257              $name = null;
 258              $uri = null;
 259              $email = null;
 260              if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'])) {
 261                  $name = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 262              }
 263              if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
 264                  $uri = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]));
 265              }
 266              if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'])) {
 267                  $email = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 268              }
 269              if ($name !== null || $email !== null || $uri !== null) {
 270                  $contributors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
 271              }
 272          }
 273          foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'contributor') as $contributor) {
 274              $name = null;
 275              $url = null;
 276              $email = null;
 277              if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'])) {
 278                  $name = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 279              }
 280              if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'])) {
 281                  $url = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]));
 282              }
 283              if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'])) {
 284                  $email = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 285              }
 286              if ($name !== null || $email !== null || $url !== null) {
 287                  $contributors[] = $this->registry->create(Author::class, [$name, $url, $email]);
 288              }
 289          }
 290  
 291          if (!empty($contributors)) {
 292              return array_unique($contributors);
 293          }
 294  
 295          return null;
 296      }
 297  
 298      public function get_link($key = 0, $rel = 'alternate')
 299      {
 300          $links = $this->get_links($rel);
 301          if (isset($links[$key])) {
 302              return $links[$key];
 303          }
 304  
 305          return null;
 306      }
 307  
 308      /**
 309       * Added for parity between the parent-level and the item/entry-level.
 310       */
 311      public function get_permalink()
 312      {
 313          return $this->get_link(0);
 314      }
 315  
 316      public function get_links($rel = 'alternate')
 317      {
 318          if (!isset($this->data['links'])) {
 319              $this->data['links'] = [];
 320              if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'link')) {
 321                  foreach ($links as $link) {
 322                      if (isset($link['attribs']['']['href'])) {
 323                          $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
 324                          $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($link));
 325                      }
 326                  }
 327              }
 328              if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'link')) {
 329                  foreach ($links as $link) {
 330                      if (isset($link['attribs']['']['href'])) {
 331                          $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
 332                          $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($link));
 333                      }
 334                  }
 335              }
 336              if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_10, 'link')) {
 337                  $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($links[0]));
 338              }
 339              if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_090, 'link')) {
 340                  $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($links[0]));
 341              }
 342              if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'link')) {
 343                  $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($links[0]));
 344              }
 345  
 346              $keys = array_keys($this->data['links']);
 347              foreach ($keys as $key) {
 348                  if ($this->registry->call(Misc::class, 'is_isegment_nz_nc', [$key])) {
 349                      if (isset($this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key])) {
 350                          $this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key]);
 351                          $this->data['links'][$key] =& $this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key];
 352                      } else {
 353                          $this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
 354                      }
 355                  } elseif (substr($key, 0, 41) === \SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY) {
 356                      $this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
 357                  }
 358                  $this->data['links'][$key] = array_unique($this->data['links'][$key]);
 359              }
 360          }
 361  
 362          if (isset($this->data['links'][$rel])) {
 363              return $this->data['links'][$rel];
 364          }
 365  
 366          return null;
 367      }
 368  
 369      public function get_description()
 370      {
 371          if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'subtitle')) {
 372              return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
 373          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'tagline')) {
 374              return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
 375          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_10, 'description')) {
 376              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 377          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_090, 'description')) {
 378              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 379          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'description')) {
 380              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 381          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'description')) {
 382              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 383          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'description')) {
 384              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 385          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'summary')) {
 386              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_HTML, $this->get_base($return[0]));
 387          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'subtitle')) {
 388              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_HTML, $this->get_base($return[0]));
 389          }
 390  
 391          return null;
 392      }
 393  
 394      public function get_copyright()
 395      {
 396          if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'rights')) {
 397              return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
 398          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'copyright')) {
 399              return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
 400          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'copyright')) {
 401              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 402          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'rights')) {
 403              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 404          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'rights')) {
 405              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 406          }
 407  
 408          return null;
 409      }
 410  
 411      public function get_language()
 412      {
 413          if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'language')) {
 414              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 415          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'language')) {
 416              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 417          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'language')) {
 418              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 419          } elseif (isset($this->data['xml_lang'])) {
 420              return $this->sanitize($this->data['xml_lang'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
 421          }
 422  
 423          return null;
 424      }
 425  
 426      public function get_latitude()
 427      {
 428          if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_W3C_BASIC_GEO, 'lat')) {
 429              return (float) $return[0]['data'];
 430          } elseif (($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
 431              return (float) $match[1];
 432          }
 433  
 434          return null;
 435      }
 436  
 437      public function get_longitude()
 438      {
 439          if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_W3C_BASIC_GEO, 'long')) {
 440              return (float) $return[0]['data'];
 441          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_W3C_BASIC_GEO, 'lon')) {
 442              return (float) $return[0]['data'];
 443          } elseif (($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
 444              return (float) $match[2];
 445          }
 446  
 447          return null;
 448      }
 449  
 450      public function get_image_url()
 451      {
 452          if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'image')) {
 453              return $this->sanitize($return[0]['attribs']['']['href'], \SimplePie\SimplePie::CONSTRUCT_IRI);
 454          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'logo')) {
 455              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($return[0]));
 456          } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'icon')) {
 457              return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($return[0]));
 458          }
 459  
 460          return null;
 461      }
 462  }
 463  
 464  class_alias('SimplePie\Source', 'SimplePie_Source');