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Differences Between: [Versions 310 and 400] [Versions 39 and 400] [Versions 400 and 401] [Versions 400 and 402] [Versions 400 and 403]

   1  <?php
   2  /**
   3   * SimplePie
   4   *
   5   * A PHP-Based RSS and Atom Feed Framework.
   6   * Takes the hard work out of managing a complete RSS/Atom solution.
   7   *
   8   * Copyright (c) 2004-2016, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
   9   * All rights reserved.
  10   *
  11   * Redistribution and use in source and binary forms, with or without modification, are
  12   * permitted provided that the following conditions are met:
  13   *
  14   * 	 * Redistributions of source code must retain the above copyright notice, this list of
  15   * 	   conditions and the following disclaimer.
  16   *
  17   * 	 * Redistributions in binary form must reproduce the above copyright notice, this list
  18   * 	   of conditions and the following disclaimer in the documentation and/or other materials
  19   * 	   provided with the distribution.
  20   *
  21   * 	 * Neither the name of the SimplePie Team nor the names of its contributors may be used
  22   * 	   to endorse or promote products derived from this software without specific prior
  23   * 	   written permission.
  24   *
  25   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
  26   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  27   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
  28   * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  32   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33   * POSSIBILITY OF SUCH DAMAGE.
  34   *
  35   * @package SimplePie
  36   * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
  37   * @author Ryan Parman
  38   * @author Sam Sneddon
  39   * @author Ryan McCue
  40   * @link http://simplepie.org/ SimplePie
  41   * @license http://www.opensource.org/licenses/bsd-license.php BSD License
  42   */
  43  
  44  /**
  45   * Handles `<atom:source>`
  46   *
  47   * Used by {@see SimplePie_Item::get_source()}
  48   *
  49   * This class can be overloaded with {@see SimplePie::set_source_class()}
  50   *
  51   * @package SimplePie
  52   * @subpackage API
  53   */
  54  class SimplePie_Source
  55  {
  56  	 var $item;
  57  	 var $data = array();
  58  	 protected $registry;
  59  
  60  	public function __construct($item, $data)
  61  	 {
  62  	 	 $this->item = $item;
  63  	 	 $this->data = $data;
  64  	 }
  65  
  66  	public function set_registry(SimplePie_Registry $registry)
  67  	 {
  68  	 	 $this->registry = $registry;
  69  	 }
  70  
  71  	public function __toString()
  72  	 {
  73  	 	 return md5(serialize($this->data));
  74  	 }
  75  
  76  	public function get_source_tags($namespace, $tag)
  77  	 {
  78  	 	 if (isset($this->data['child'][$namespace][$tag]))
  79  	 	 {
  80  	 	 	 return $this->data['child'][$namespace][$tag];
  81  	 	 }
  82  
  83  	 	 return null;
  84  	 }
  85  
  86  	public function get_base($element = array())
  87  	 {
  88  	 	 return $this->item->get_base($element);
  89  	 }
  90  
  91  	public function sanitize($data, $type, $base = '')
  92  	 {
  93  	 	 return $this->item->sanitize($data, $type, $base);
  94  	 }
  95  
  96  	public function get_item()
  97  	 {
  98  	 	 return $this->item;
  99  	 }
 100  
 101  	public function get_title()
 102  	 {
 103  	 	 if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
 104  	 	 {
 105  	 	 	 return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
 106  	 	 }
 107  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
 108  	 	 {
 109  	 	 	 return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
 110  	 	 }
 111  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
 112  	 	 {
 113  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 114  	 	 }
 115  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
 116  	 	 {
 117  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 118  	 	 }
 119  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
 120  	 	 {
 121  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 122  	 	 }
 123  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
 124  	 	 {
 125  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 126  	 	 }
 127  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
 128  	 	 {
 129  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 130  	 	 }
 131  
 132  	 	 return null;
 133  	 }
 134  
 135  	public function get_category($key = 0)
 136  	 {
 137  	 	 $categories = $this->get_categories();
 138  	 	 if (isset($categories[$key]))
 139  	 	 {
 140  	 	 	 return $categories[$key];
 141  	 	 }
 142  
 143  	 	 return null;
 144  	 }
 145  
 146  	public function get_categories()
 147  	 {
 148  	 	 $categories = array();
 149  
 150  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
 151  	 	 {
 152  	 	 	 $term = null;
 153  	 	 	 $scheme = null;
 154  	 	 	 $label = null;
 155  	 	 	 if (isset($category['attribs']['']['term']))
 156  	 	 	 {
 157  	 	 	 	 $term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_TEXT);
 158  	 	 	 }
 159  	 	 	 if (isset($category['attribs']['']['scheme']))
 160  	 	 	 {
 161  	 	 	 	 $scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
 162  	 	 	 }
 163  	 	 	 if (isset($category['attribs']['']['label']))
 164  	 	 	 {
 165  	 	 	 	 $label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
 166  	 	 	 }
 167  	 	 	 $categories[] = $this->registry->create('Category', array($term, $scheme, $label));
 168  	 	 }
 169  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
 170  	 	 {
 171  	 	 	 // This is really the label, but keep this as the term also for BC.
 172  	 	 	 // Label will also work on retrieving because that falls back to term.
 173  	 	 	 $term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 174  	 	 	 if (isset($category['attribs']['']['domain']))
 175  	 	 	 {
 176  	 	 	 	 $scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_TEXT);
 177  	 	 	 }
 178  	 	 	 else
 179  	 	 	 {
 180  	 	 	 	 $scheme = null;
 181  	 	 	 }
 182  	 	 	 $categories[] = $this->registry->create('Category', array($term, $scheme, null));
 183  	 	 }
 184  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
 185  	 	 {
 186  	 	 	 $categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
 187  	 	 }
 188  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
 189  	 	 {
 190  	 	 	 $categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
 191  	 	 }
 192  
 193  	 	 if (!empty($categories))
 194  	 	 {
 195  	 	 	 return array_unique($categories);
 196  	 	 }
 197  
 198  	 	 return null;
 199  	 }
 200  
 201  	public function get_author($key = 0)
 202  	 {
 203  	 	 $authors = $this->get_authors();
 204  	 	 if (isset($authors[$key]))
 205  	 	 {
 206  	 	 	 return $authors[$key];
 207  	 	 }
 208  
 209  	 	 return null;
 210  	 }
 211  
 212  	public function get_authors()
 213  	 {
 214  	 	 $authors = array();
 215  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
 216  	 	 {
 217  	 	 	 $name = null;
 218  	 	 	 $uri = null;
 219  	 	 	 $email = null;
 220  	 	 	 if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
 221  	 	 	 {
 222  	 	 	 	 $name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 223  	 	 	 }
 224  	 	 	 if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
 225  	 	 	 {
 226  	 	 	 	 $uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
 227  	 	 	 }
 228  	 	 	 if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
 229  	 	 	 {
 230  	 	 	 	 $email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 231  	 	 	 }
 232  	 	 	 if ($name !== null || $email !== null || $uri !== null)
 233  	 	 	 {
 234  	 	 	 	 $authors[] = $this->registry->create('Author', array($name, $uri, $email));
 235  	 	 	 }
 236  	 	 }
 237  	 	 if ($author = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
 238  	 	 {
 239  	 	 	 $name = null;
 240  	 	 	 $url = null;
 241  	 	 	 $email = null;
 242  	 	 	 if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
 243  	 	 	 {
 244  	 	 	 	 $name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 245  	 	 	 }
 246  	 	 	 if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
 247  	 	 	 {
 248  	 	 	 	 $url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
 249  	 	 	 }
 250  	 	 	 if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
 251  	 	 	 {
 252  	 	 	 	 $email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 253  	 	 	 }
 254  	 	 	 if ($name !== null || $email !== null || $url !== null)
 255  	 	 	 {
 256  	 	 	 	 $authors[] = $this->registry->create('Author', array($name, $url, $email));
 257  	 	 	 }
 258  	 	 }
 259  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
 260  	 	 {
 261  	 	 	 $authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
 262  	 	 }
 263  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
 264  	 	 {
 265  	 	 	 $authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
 266  	 	 }
 267  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
 268  	 	 {
 269  	 	 	 $authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
 270  	 	 }
 271  
 272  	 	 if (!empty($authors))
 273  	 	 {
 274  	 	 	 return array_unique($authors);
 275  	 	 }
 276  
 277  	 	 return null;
 278  	 }
 279  
 280  	public function get_contributor($key = 0)
 281  	 {
 282  	 	 $contributors = $this->get_contributors();
 283  	 	 if (isset($contributors[$key]))
 284  	 	 {
 285  	 	 	 return $contributors[$key];
 286  	 	 }
 287  
 288  	 	 return null;
 289  	 }
 290  
 291  	public function get_contributors()
 292  	 {
 293  	 	 $contributors = array();
 294  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
 295  	 	 {
 296  	 	 	 $name = null;
 297  	 	 	 $uri = null;
 298  	 	 	 $email = null;
 299  	 	 	 if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
 300  	 	 	 {
 301  	 	 	 	 $name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 302  	 	 	 }
 303  	 	 	 if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
 304  	 	 	 {
 305  	 	 	 	 $uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
 306  	 	 	 }
 307  	 	 	 if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
 308  	 	 	 {
 309  	 	 	 	 $email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 310  	 	 	 }
 311  	 	 	 if ($name !== null || $email !== null || $uri !== null)
 312  	 	 	 {
 313  	 	 	 	 $contributors[] = $this->registry->create('Author', array($name, $uri, $email));
 314  	 	 	 }
 315  	 	 }
 316  	 	 foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
 317  	 	 {
 318  	 	 	 $name = null;
 319  	 	 	 $url = null;
 320  	 	 	 $email = null;
 321  	 	 	 if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
 322  	 	 	 {
 323  	 	 	 	 $name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 324  	 	 	 }
 325  	 	 	 if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
 326  	 	 	 {
 327  	 	 	 	 $url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
 328  	 	 	 }
 329  	 	 	 if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
 330  	 	 	 {
 331  	 	 	 	 $email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 332  	 	 	 }
 333  	 	 	 if ($name !== null || $email !== null || $url !== null)
 334  	 	 	 {
 335  	 	 	 	 $contributors[] = $this->registry->create('Author', array($name, $url, $email));
 336  	 	 	 }
 337  	 	 }
 338  
 339  	 	 if (!empty($contributors))
 340  	 	 {
 341  	 	 	 return array_unique($contributors);
 342  	 	 }
 343  
 344  	 	 return null;
 345  	 }
 346  
 347  	public function get_link($key = 0, $rel = 'alternate')
 348  	 {
 349  	 	 $links = $this->get_links($rel);
 350  	 	 if (isset($links[$key]))
 351  	 	 {
 352  	 	 	 return $links[$key];
 353  	 	 }
 354  
 355  	 	 return null;
 356  	 }
 357  
 358  	 /**
 359  	  * Added for parity between the parent-level and the item/entry-level.
 360  	  */
 361  	public function get_permalink()
 362  	 {
 363  	 	 return $this->get_link(0);
 364  	 }
 365  
 366  	public function get_links($rel = 'alternate')
 367  	 {
 368  	 	 if (!isset($this->data['links']))
 369  	 	 {
 370  	 	 	 $this->data['links'] = array();
 371  	 	 	 if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link'))
 372  	 	 	 {
 373  	 	 	 	 foreach ($links as $link)
 374  	 	 	 	 {
 375  	 	 	 	 	 if (isset($link['attribs']['']['href']))
 376  	 	 	 	 	 {
 377  	 	 	 	 	 	 $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
 378  	 	 	 	 	 	 $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
 379  	 	 	 	 	 }
 380  	 	 	 	 }
 381  	 	 	 }
 382  	 	 	 if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link'))
 383  	 	 	 {
 384  	 	 	 	 foreach ($links as $link)
 385  	 	 	 	 {
 386  	 	 	 	 	 if (isset($link['attribs']['']['href']))
 387  	 	 	 	 	 {
 388  	 	 	 	 	 	 $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
 389  	 	 	 	 	 	 $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
 390  
 391  	 	 	 	 	 }
 392  	 	 	 	 }
 393  	 	 	 }
 394  	 	 	 if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
 395  	 	 	 {
 396  	 	 	 	 $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
 397  	 	 	 }
 398  	 	 	 if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
 399  	 	 	 {
 400  	 	 	 	 $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
 401  	 	 	 }
 402  	 	 	 if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
 403  	 	 	 {
 404  	 	 	 	 $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
 405  	 	 	 }
 406  
 407  	 	 	 $keys = array_keys($this->data['links']);
 408  	 	 	 foreach ($keys as $key)
 409  	 	 	 {
 410  	 	 	 	 if ($this->registry->call('Misc', 'is_isegment_nz_nc', array($key)))
 411  	 	 	 	 {
 412  	 	 	 	 	 if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
 413  	 	 	 	 	 {
 414  	 	 	 	 	 	 $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]);
 415  	 	 	 	 	 	 $this->data['links'][$key] =& $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key];
 416  	 	 	 	 	 }
 417  	 	 	 	 	 else
 418  	 	 	 	 	 {
 419  	 	 	 	 	 	 $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
 420  	 	 	 	 	 }
 421  	 	 	 	 }
 422  	 	 	 	 elseif (substr($key, 0, 41) === SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY)
 423  	 	 	 	 {
 424  	 	 	 	 	 $this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
 425  	 	 	 	 }
 426  	 	 	 	 $this->data['links'][$key] = array_unique($this->data['links'][$key]);
 427  	 	 	 }
 428  	 	 }
 429  
 430  	 	 if (isset($this->data['links'][$rel]))
 431  	 	 {
 432  	 	 	 return $this->data['links'][$rel];
 433  	 	 }
 434  
 435  	 	 return null;
 436  	 }
 437  
 438  	public function get_description()
 439  	 {
 440  	 	 if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'subtitle'))
 441  	 	 {
 442  	 	 	 return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
 443  	 	 }
 444  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'tagline'))
 445  	 	 {
 446  	 	 	 return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
 447  	 	 }
 448  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description'))
 449  	 	 {
 450  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 451  	 	 }
 452  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'description'))
 453  	 	 {
 454  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 455  	 	 }
 456  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'description'))
 457  	 	 {
 458  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
 459  	 	 }
 460  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'description'))
 461  	 	 {
 462  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 463  	 	 }
 464  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'description'))
 465  	 	 {
 466  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 467  	 	 }
 468  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'summary'))
 469  	 	 {
 470  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
 471  	 	 }
 472  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'subtitle'))
 473  	 	 {
 474  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
 475  	 	 }
 476  
 477  	 	 return null;
 478  	 }
 479  
 480  	public function get_copyright()
 481  	 {
 482  	 	 if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
 483  	 	 {
 484  	 	 	 return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
 485  	 	 }
 486  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'copyright'))
 487  	 	 {
 488  	 	 	 return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
 489  	 	 }
 490  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'copyright'))
 491  	 	 {
 492  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 493  	 	 }
 494  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'rights'))
 495  	 	 {
 496  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 497  	 	 }
 498  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'rights'))
 499  	 	 {
 500  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 501  	 	 }
 502  
 503  	 	 return null;
 504  	 }
 505  
 506  	public function get_language()
 507  	 {
 508  	 	 if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'language'))
 509  	 	 {
 510  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 511  	 	 }
 512  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'language'))
 513  	 	 {
 514  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 515  	 	 }
 516  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'language'))
 517  	 	 {
 518  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
 519  	 	 }
 520  	 	 elseif (isset($this->data['xml_lang']))
 521  	 	 {
 522  	 	 	 return $this->sanitize($this->data['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
 523  	 	 }
 524  
 525  	 	 return null;
 526  	 }
 527  
 528  	public function get_latitude()
 529  	 {
 530  	 	 if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lat'))
 531  	 	 {
 532  	 	 	 return (float) $return[0]['data'];
 533  	 	 }
 534  	 	 elseif (($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match))
 535  	 	 {
 536  	 	 	 return (float) $match[1];
 537  	 	 }
 538  
 539  	 	 return null;
 540  	 }
 541  
 542  	public function get_longitude()
 543  	 {
 544  	 	 if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'long'))
 545  	 	 {
 546  	 	 	 return (float) $return[0]['data'];
 547  	 	 }
 548  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lon'))
 549  	 	 {
 550  	 	 	 return (float) $return[0]['data'];
 551  	 	 }
 552  	 	 elseif (($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match))
 553  	 	 {
 554  	 	 	 return (float) $match[2];
 555  	 	 }
 556  
 557  	 	 return null;
 558  	 }
 559  
 560  	public function get_image_url()
 561  	 {
 562  	 	 if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'image'))
 563  	 	 {
 564  	 	 	 return $this->sanitize($return[0]['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI);
 565  	 	 }
 566  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'logo'))
 567  	 	 {
 568  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
 569  	 	 }
 570  	 	 elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'icon'))
 571  	 	 {
 572  	 	 	 return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
 573  	 	 }
 574  
 575  	 	 return null;
 576  	 }
 577  }