Proyectos de Subversion Moodle

Rev

Rev 1 | | Comparar con el anterior | Ultima modificación | Ver Log |

Rev Autor Línea Nro. Línea
1 efrain 1
<?php
2
 
3
/**
4
 * SimplePie
5
 *
6
 * A PHP-Based RSS and Atom Feed Framework.
7
 * Takes the hard work out of managing a complete RSS/Atom solution.
8
 *
9
 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
10
 * All rights reserved.
11
 *
12
 * Redistribution and use in source and binary forms, with or without modification, are
13
 * permitted provided that the following conditions are met:
14
 *
15
 * 	* Redistributions of source code must retain the above copyright notice, this list of
16
 * 	  conditions and the following disclaimer.
17
 *
18
 * 	* Redistributions in binary form must reproduce the above copyright notice, this list
19
 * 	  of conditions and the following disclaimer in the documentation and/or other materials
20
 * 	  provided with the distribution.
21
 *
22
 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
23
 * 	  to endorse or promote products derived from this software without specific prior
24
 * 	  written permission.
25
 *
26
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
27
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
28
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
29
 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
31
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
33
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34
 * POSSIBILITY OF SUCH DAMAGE.
35
 *
36
 * @package SimplePie
37
 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
38
 * @author Ryan Parman
39
 * @author Sam Sneddon
40
 * @author Ryan McCue
41
 * @link http://simplepie.org/ SimplePie
42
 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
43
 */
44
 
45
namespace SimplePie;
46
 
47
use InvalidArgumentException;
48
use Psr\SimpleCache\CacheInterface;
49
use SimplePie\Cache\Base;
50
use SimplePie\Cache\BaseDataCache;
51
use SimplePie\Cache\CallableNameFilter;
52
use SimplePie\Cache\DataCache;
53
use SimplePie\Cache\NameFilter;
54
use SimplePie\Cache\Psr16;
55
use SimplePie\Content\Type\Sniffer;
56
 
57
/**
58
 * SimplePie
59
 *
60
 * @package SimplePie
61
 * @subpackage API
62
 */
63
class SimplePie
64
{
65
    /**
66
     * SimplePie Name
67
     */
68
    public const NAME = 'SimplePie';
69
 
70
    /**
71
     * SimplePie Version
72
     */
1441 ariadna 73
    public const VERSION = '1.8.1';
1 efrain 74
 
75
    /**
76
     * SimplePie Website URL
77
     */
78
    public const URL = 'http://simplepie.org';
79
 
80
    /**
81
     * SimplePie Linkback
82
     */
83
    public const LINKBACK = '<a href="' . self::URL . '" title="' . self::NAME . ' ' . self::VERSION . '">' . self::NAME . '</a>';
84
 
85
    /**
86
     * No Autodiscovery
87
     * @see SimplePie::set_autodiscovery_level()
88
     */
89
    public const LOCATOR_NONE = 0;
90
 
91
    /**
92
     * Feed Link Element Autodiscovery
93
     * @see SimplePie::set_autodiscovery_level()
94
     */
95
    public const LOCATOR_AUTODISCOVERY = 1;
96
 
97
    /**
98
     * Local Feed Extension Autodiscovery
99
     * @see SimplePie::set_autodiscovery_level()
100
     */
101
    public const LOCATOR_LOCAL_EXTENSION = 2;
102
 
103
    /**
104
     * Local Feed Body Autodiscovery
105
     * @see SimplePie::set_autodiscovery_level()
106
     */
107
    public const LOCATOR_LOCAL_BODY = 4;
108
 
109
    /**
110
     * Remote Feed Extension Autodiscovery
111
     * @see SimplePie::set_autodiscovery_level()
112
     */
113
    public const LOCATOR_REMOTE_EXTENSION = 8;
114
 
115
    /**
116
     * Remote Feed Body Autodiscovery
117
     * @see SimplePie::set_autodiscovery_level()
118
     */
119
    public const LOCATOR_REMOTE_BODY = 16;
120
 
121
    /**
122
     * All Feed Autodiscovery
123
     * @see SimplePie::set_autodiscovery_level()
124
     */
125
    public const LOCATOR_ALL = 31;
126
 
127
    /**
128
     * No known feed type
129
     */
130
    public const TYPE_NONE = 0;
131
 
132
    /**
133
     * RSS 0.90
134
     */
135
    public const TYPE_RSS_090 = 1;
136
 
137
    /**
138
     * RSS 0.91 (Netscape)
139
     */
140
    public const TYPE_RSS_091_NETSCAPE = 2;
141
 
142
    /**
143
     * RSS 0.91 (Userland)
144
     */
145
    public const TYPE_RSS_091_USERLAND = 4;
146
 
147
    /**
148
     * RSS 0.91 (both Netscape and Userland)
149
     */
150
    public const TYPE_RSS_091 = 6;
151
 
152
    /**
153
     * RSS 0.92
154
     */
155
    public const TYPE_RSS_092 = 8;
156
 
157
    /**
158
     * RSS 0.93
159
     */
160
    public const TYPE_RSS_093 = 16;
161
 
162
    /**
163
     * RSS 0.94
164
     */
165
    public const TYPE_RSS_094 = 32;
166
 
167
    /**
168
     * RSS 1.0
169
     */
170
    public const TYPE_RSS_10 = 64;
171
 
172
    /**
173
     * RSS 2.0
174
     */
175
    public const TYPE_RSS_20 = 128;
176
 
177
    /**
178
     * RDF-based RSS
179
     */
180
    public const TYPE_RSS_RDF = 65;
181
 
182
    /**
183
     * Non-RDF-based RSS (truly intended as syndication format)
184
     */
185
    public const TYPE_RSS_SYNDICATION = 190;
186
 
187
    /**
188
     * All RSS
189
     */
190
    public const TYPE_RSS_ALL = 255;
191
 
192
    /**
193
     * Atom 0.3
194
     */
195
    public const TYPE_ATOM_03 = 256;
196
 
197
    /**
198
     * Atom 1.0
199
     */
200
    public const TYPE_ATOM_10 = 512;
201
 
202
    /**
203
     * All Atom
204
     */
205
    public const TYPE_ATOM_ALL = 768;
206
 
207
    /**
208
     * All feed types
209
     */
210
    public const TYPE_ALL = 1023;
211
 
212
    /**
213
     * No construct
214
     */
215
    public const CONSTRUCT_NONE = 0;
216
 
217
    /**
218
     * Text construct
219
     */
220
    public const CONSTRUCT_TEXT = 1;
221
 
222
    /**
223
     * HTML construct
224
     */
225
    public const CONSTRUCT_HTML = 2;
226
 
227
    /**
228
     * XHTML construct
229
     */
230
    public const CONSTRUCT_XHTML = 4;
231
 
232
    /**
233
     * base64-encoded construct
234
     */
235
    public const CONSTRUCT_BASE64 = 8;
236
 
237
    /**
238
     * IRI construct
239
     */
240
    public const CONSTRUCT_IRI = 16;
241
 
242
    /**
243
     * A construct that might be HTML
244
     */
245
    public const CONSTRUCT_MAYBE_HTML = 32;
246
 
247
    /**
248
     * All constructs
249
     */
250
    public const CONSTRUCT_ALL = 63;
251
 
252
    /**
253
     * Don't change case
254
     */
255
    public const SAME_CASE = 1;
256
 
257
    /**
258
     * Change to lowercase
259
     */
260
    public const LOWERCASE = 2;
261
 
262
    /**
263
     * Change to uppercase
264
     */
265
    public const UPPERCASE = 4;
266
 
267
    /**
268
     * PCRE for HTML attributes
269
     */
270
    public const PCRE_HTML_ATTRIBUTE = '((?:[\x09\x0A\x0B\x0C\x0D\x20]+[^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:"(?:[^"]*)"|\'(?:[^\']*)\'|(?:[^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?)*)[\x09\x0A\x0B\x0C\x0D\x20]*';
271
 
272
    /**
273
     * PCRE for XML attributes
274
     */
275
    public const PCRE_XML_ATTRIBUTE = '((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'))*)\s*';
276
 
277
    /**
278
     * XML Namespace
279
     */
280
    public const NAMESPACE_XML = 'http://www.w3.org/XML/1998/namespace';
281
 
282
    /**
283
     * Atom 1.0 Namespace
284
     */
285
    public const NAMESPACE_ATOM_10 = 'http://www.w3.org/2005/Atom';
286
 
287
    /**
288
     * Atom 0.3 Namespace
289
     */
290
    public const NAMESPACE_ATOM_03 = 'http://purl.org/atom/ns#';
291
 
292
    /**
293
     * RDF Namespace
294
     */
295
    public const NAMESPACE_RDF = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
296
 
297
    /**
298
     * RSS 0.90 Namespace
299
     */
300
    public const NAMESPACE_RSS_090 = 'http://my.netscape.com/rdf/simple/0.9/';
301
 
302
    /**
303
     * RSS 1.0 Namespace
304
     */
305
    public const NAMESPACE_RSS_10 = 'http://purl.org/rss/1.0/';
306
 
307
    /**
308
     * RSS 1.0 Content Module Namespace
309
     */
310
    public const NAMESPACE_RSS_10_MODULES_CONTENT = 'http://purl.org/rss/1.0/modules/content/';
311
 
312
    /**
313
     * RSS 2.0 Namespace
314
     * (Stupid, I know, but I'm certain it will confuse people less with support.)
315
     */
316
    public const NAMESPACE_RSS_20 = '';
317
 
318
    /**
319
     * DC 1.0 Namespace
320
     */
321
    public const NAMESPACE_DC_10 = 'http://purl.org/dc/elements/1.0/';
322
 
323
    /**
324
     * DC 1.1 Namespace
325
     */
326
    public const NAMESPACE_DC_11 = 'http://purl.org/dc/elements/1.1/';
327
 
328
    /**
329
     * W3C Basic Geo (WGS84 lat/long) Vocabulary Namespace
330
     */
331
    public const NAMESPACE_W3C_BASIC_GEO = 'http://www.w3.org/2003/01/geo/wgs84_pos#';
332
 
333
    /**
334
     * GeoRSS Namespace
335
     */
336
    public const NAMESPACE_GEORSS = 'http://www.georss.org/georss';
337
 
338
    /**
339
     * Media RSS Namespace
340
     */
341
    public const NAMESPACE_MEDIARSS = 'http://search.yahoo.com/mrss/';
342
 
343
    /**
344
     * Wrong Media RSS Namespace. Caused by a long-standing typo in the spec.
345
     */
346
    public const NAMESPACE_MEDIARSS_WRONG = 'http://search.yahoo.com/mrss';
347
 
348
    /**
349
     * Wrong Media RSS Namespace #2. New namespace introduced in Media RSS 1.5.
350
     */
351
    public const NAMESPACE_MEDIARSS_WRONG2 = 'http://video.search.yahoo.com/mrss';
352
 
353
    /**
354
     * Wrong Media RSS Namespace #3. A possible typo of the Media RSS 1.5 namespace.
355
     */
356
    public const NAMESPACE_MEDIARSS_WRONG3 = 'http://video.search.yahoo.com/mrss/';
357
 
358
    /**
359
     * Wrong Media RSS Namespace #4. New spec location after the RSS Advisory Board takes it over, but not a valid namespace.
360
     */
361
    public const NAMESPACE_MEDIARSS_WRONG4 = 'http://www.rssboard.org/media-rss';
362
 
363
    /**
364
     * Wrong Media RSS Namespace #5. A possible typo of the RSS Advisory Board URL.
365
     */
366
    public const NAMESPACE_MEDIARSS_WRONG5 = 'http://www.rssboard.org/media-rss/';
367
 
368
    /**
369
     * iTunes RSS Namespace
370
     */
371
    public const NAMESPACE_ITUNES = 'http://www.itunes.com/dtds/podcast-1.0.dtd';
372
 
373
    /**
374
     * XHTML Namespace
375
     */
376
    public const NAMESPACE_XHTML = 'http://www.w3.org/1999/xhtml';
377
 
378
    /**
379
     * IANA Link Relations Registry
380
     */
381
    public const IANA_LINK_RELATIONS_REGISTRY = 'http://www.iana.org/assignments/relation/';
382
 
383
    /**
384
     * No file source
385
     */
386
    public const FILE_SOURCE_NONE = 0;
387
 
388
    /**
389
     * Remote file source
390
     */
391
    public const FILE_SOURCE_REMOTE = 1;
392
 
393
    /**
394
     * Local file source
395
     */
396
    public const FILE_SOURCE_LOCAL = 2;
397
 
398
    /**
399
     * fsockopen() file source
400
     */
401
    public const FILE_SOURCE_FSOCKOPEN = 4;
402
 
403
    /**
404
     * cURL file source
405
     */
406
    public const FILE_SOURCE_CURL = 8;
407
 
408
    /**
409
     * file_get_contents() file source
410
     */
411
    public const FILE_SOURCE_FILE_GET_CONTENTS = 16;
412
 
413
    /**
414
     * @var array Raw data
415
     * @access private
416
     */
417
    public $data = [];
418
 
419
    /**
420
     * @var mixed Error string
421
     * @access private
422
     */
423
    public $error;
424
 
425
    /**
426
     * @var int HTTP status code
427
     * @see SimplePie::status_code()
428
     * @access private
429
     */
430
    public $status_code = 0;
431
 
432
    /**
433
     * @var object Instance of \SimplePie\Sanitize (or other class)
434
     * @see SimplePie::set_sanitize_class()
435
     * @access private
436
     */
437
    public $sanitize;
438
 
439
    /**
440
     * @var string SimplePie Useragent
441
     * @see SimplePie::set_useragent()
442
     * @access private
443
     */
444
    public $useragent = '';
445
 
446
    /**
447
     * @var string Feed URL
448
     * @see SimplePie::set_feed_url()
449
     * @access private
450
     */
451
    public $feed_url;
452
 
453
    /**
454
     * @var string Original feed URL, or new feed URL iff HTTP 301 Moved Permanently
455
     * @see SimplePie::subscribe_url()
456
     * @access private
457
     */
458
    public $permanent_url = null;
459
 
460
    /**
461
     * @var object Instance of \SimplePie\File to use as a feed
462
     * @see SimplePie::set_file()
463
     * @access private
464
     */
465
    public $file;
466
 
467
    /**
468
     * @var string Raw feed data
469
     * @see SimplePie::set_raw_data()
470
     * @access private
471
     */
472
    public $raw_data;
473
 
474
    /**
475
     * @var int Timeout for fetching remote files
476
     * @see SimplePie::set_timeout()
477
     * @access private
478
     */
479
    public $timeout = 10;
480
 
481
    /**
482
     * @var array Custom curl options
483
     * @see SimplePie::set_curl_options()
484
     * @access private
485
     */
486
    public $curl_options = [];
487
 
488
    /**
489
     * @var bool Forces fsockopen() to be used for remote files instead
490
     * of cURL, even if a new enough version is installed
491
     * @see SimplePie::force_fsockopen()
492
     * @access private
493
     */
494
    public $force_fsockopen = false;
495
 
496
    /**
497
     * @var bool Force the given data/URL to be treated as a feed no matter what
498
     * it appears like
499
     * @see SimplePie::force_feed()
500
     * @access private
501
     */
502
    public $force_feed = false;
503
 
504
    /**
505
     * @var bool Enable/Disable Caching
506
     * @see SimplePie::enable_cache()
507
     * @access private
508
     */
509
    private $enable_cache = true;
510
 
511
    /**
512
     * @var DataCache|null
513
     * @see SimplePie::set_cache()
514
     */
515
    private $cache = null;
516
 
517
    /**
518
     * @var NameFilter
519
     * @see SimplePie::set_cache_namefilter()
520
     */
521
    private $cache_namefilter;
522
 
523
    /**
524
     * @var bool Force SimplePie to fallback to expired cache, if enabled,
525
     * when feed is unavailable.
526
     * @see SimplePie::force_cache_fallback()
527
     * @access private
528
     */
529
    public $force_cache_fallback = false;
530
 
531
    /**
532
     * @var int Cache duration (in seconds)
533
     * @see SimplePie::set_cache_duration()
534
     * @access private
535
     */
536
    public $cache_duration = 3600;
537
 
538
    /**
539
     * @var int Auto-discovery cache duration (in seconds)
540
     * @see SimplePie::set_autodiscovery_cache_duration()
541
     * @access private
542
     */
543
    public $autodiscovery_cache_duration = 604800; // 7 Days.
544
 
545
    /**
546
     * @var string Cache location (relative to executing script)
547
     * @see SimplePie::set_cache_location()
548
     * @access private
549
     */
550
    public $cache_location = './cache';
551
 
552
    /**
553
     * @var string Function that creates the cache filename
554
     * @see SimplePie::set_cache_name_function()
555
     * @access private
556
     */
557
    public $cache_name_function = 'md5';
558
 
559
    /**
560
     * @var bool Reorder feed by date descending
561
     * @see SimplePie::enable_order_by_date()
562
     * @access private
563
     */
564
    public $order_by_date = true;
565
 
566
    /**
567
     * @var mixed Force input encoding to be set to the follow value
568
     * (false, or anything type-cast to false, disables this feature)
569
     * @see SimplePie::set_input_encoding()
570
     * @access private
571
     */
572
    public $input_encoding = false;
573
 
574
    /**
575
     * @var int Feed Autodiscovery Level
576
     * @see SimplePie::set_autodiscovery_level()
577
     * @access private
578
     */
579
    public $autodiscovery = self::LOCATOR_ALL;
580
 
581
    /**
582
     * Class registry object
583
     *
584
     * @var \SimplePie\Registry
585
     */
586
    public $registry;
587
 
588
    /**
589
     * @var int Maximum number of feeds to check with autodiscovery
590
     * @see SimplePie::set_max_checked_feeds()
591
     * @access private
592
     */
593
    public $max_checked_feeds = 10;
594
 
595
    /**
596
     * @var array All the feeds found during the autodiscovery process
597
     * @see SimplePie::get_all_discovered_feeds()
598
     * @access private
599
     */
600
    public $all_discovered_feeds = [];
601
 
602
    /**
603
     * @var string Web-accessible path to the handler_image.php file.
604
     * @see SimplePie::set_image_handler()
605
     * @access private
606
     */
607
    public $image_handler = '';
608
 
609
    /**
610
     * @var array Stores the URLs when multiple feeds are being initialized.
611
     * @see SimplePie::set_feed_url()
612
     * @access private
613
     */
614
    public $multifeed_url = [];
615
 
616
    /**
617
     * @var array Stores SimplePie objects when multiple feeds initialized.
618
     * @access private
619
     */
620
    public $multifeed_objects = [];
621
 
622
    /**
623
     * @var array Stores the get_object_vars() array for use with multifeeds.
624
     * @see SimplePie::set_feed_url()
625
     * @access private
626
     */
627
    public $config_settings = null;
628
 
629
    /**
630
     * @var integer Stores the number of items to return per-feed with multifeeds.
631
     * @see SimplePie::set_item_limit()
632
     * @access private
633
     */
634
    public $item_limit = 0;
635
 
636
    /**
637
     * @var bool Stores if last-modified and/or etag headers were sent with the
638
     * request when checking a feed.
639
     */
640
    public $check_modified = false;
641
 
642
    /**
643
     * @var array Stores the default attributes to be stripped by strip_attributes().
644
     * @see SimplePie::strip_attributes()
645
     * @access private
646
     */
647
    public $strip_attributes = ['bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc'];
648
 
649
    /**
650
     * @var array Stores the default attributes to add to different tags by add_attributes().
651
     * @see SimplePie::add_attributes()
652
     * @access private
653
     */
654
    public $add_attributes = ['audio' => ['preload' => 'none'], 'iframe' => ['sandbox' => 'allow-scripts allow-same-origin'], 'video' => ['preload' => 'none']];
655
 
656
    /**
657
     * @var array Stores the default tags to be stripped by strip_htmltags().
658
     * @see SimplePie::strip_htmltags()
659
     * @access private
660
     */
661
    public $strip_htmltags = ['base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style'];
662
 
663
    /**
664
     * @var array Stores the default attributes to be renamed by rename_attributes().
665
     * @see SimplePie::rename_attributes()
666
     * @access private
667
     */
668
    public $rename_attributes = [];
669
 
670
    /**
671
     * @var bool Should we throw exceptions, or use the old-style error property?
672
     * @access private
673
     */
674
    public $enable_exceptions = false;
675
 
676
    /**
677
     * The SimplePie class contains feed level data and options
678
     *
679
     * To use SimplePie, create the SimplePie object with no parameters. You can
680
     * then set configuration options using the provided methods. After setting
681
     * them, you must initialise the feed using $feed->init(). At that point the
682
     * object's methods and properties will be available to you.
683
     *
684
     * Previously, it was possible to pass in the feed URL along with cache
685
     * options directly into the constructor. This has been removed as of 1.3 as
686
     * it caused a lot of confusion.
687
     *
688
     * @since 1.0 Preview Release
689
     */
690
    public function __construct()
691
    {
692
        if (version_compare(PHP_VERSION, '7.2', '<')) {
1441 ariadna 693
            exit('Please upgrade to PHP 7.2 or newer.');
1 efrain 694
        }
695
 
696
        $this->set_useragent();
697
 
698
        $this->set_cache_namefilter(new CallableNameFilter($this->cache_name_function));
699
 
700
        // Other objects, instances created here so we can set options on them
701
        $this->sanitize = new \SimplePie\Sanitize();
702
        $this->registry = new \SimplePie\Registry();
703
 
704
        if (func_num_args() > 0) {
705
            trigger_error('Passing parameters to the constructor is no longer supported. Please use set_feed_url(), set_cache_location(), and set_cache_duration() directly.', \E_USER_DEPRECATED);
706
 
707
            $args = func_get_args();
708
            switch (count($args)) {
709
                case 3:
710
                    $this->set_cache_duration($args[2]);
711
                    // no break
712
                case 2:
713
                    $this->set_cache_location($args[1]);
714
                    // no break
715
                case 1:
716
                    $this->set_feed_url($args[0]);
717
                    $this->init();
718
            }
719
        }
720
    }
721
 
722
    /**
723
     * Used for converting object to a string
724
     */
725
    public function __toString()
726
    {
727
        return md5(serialize($this->data));
728
    }
729
 
730
    /**
731
     * Remove items that link back to this before destroying this object
732
     */
733
    public function __destruct()
734
    {
735
        if (!gc_enabled()) {
736
            if (!empty($this->data['items'])) {
737
                foreach ($this->data['items'] as $item) {
738
                    $item->__destruct();
739
                }
740
                unset($item, $this->data['items']);
741
            }
742
            if (!empty($this->data['ordered_items'])) {
743
                foreach ($this->data['ordered_items'] as $item) {
744
                    $item->__destruct();
745
                }
746
                unset($item, $this->data['ordered_items']);
747
            }
748
        }
749
    }
750
 
751
    /**
752
     * Force the given data/URL to be treated as a feed
753
     *
754
     * This tells SimplePie to ignore the content-type provided by the server.
755
     * Be careful when using this option, as it will also disable autodiscovery.
756
     *
757
     * @since 1.1
758
     * @param bool $enable Force the given data/URL to be treated as a feed
759
     */
760
    public function force_feed($enable = false)
761
    {
762
        $this->force_feed = (bool) $enable;
763
    }
764
 
765
    /**
766
     * Set the URL of the feed you want to parse
767
     *
768
     * This allows you to enter the URL of the feed you want to parse, or the
769
     * website you want to try to use auto-discovery on. This takes priority
770
     * over any set raw data.
771
     *
772
     * You can set multiple feeds to mash together by passing an array instead
773
     * of a string for the $url. Remember that with each additional feed comes
774
     * additional processing and resources.
775
     *
776
     * @since 1.0 Preview Release
777
     * @see set_raw_data()
778
     * @param string|array $url This is the URL (or array of URLs) that you want to parse.
779
     */
780
    public function set_feed_url($url)
781
    {
782
        $this->multifeed_url = [];
783
        if (is_array($url)) {
784
            foreach ($url as $value) {
785
                $this->multifeed_url[] = $this->registry->call(Misc::class, 'fix_protocol', [$value, 1]);
786
            }
787
        } else {
788
            $this->feed_url = $this->registry->call(Misc::class, 'fix_protocol', [$url, 1]);
789
            $this->permanent_url = $this->feed_url;
790
        }
791
    }
792
 
793
    /**
794
     * Set an instance of {@see \SimplePie\File} to use as a feed
795
     *
796
     * @param \SimplePie\File &$file
797
     * @return bool True on success, false on failure
798
     */
799
    public function set_file(&$file)
800
    {
801
        if ($file instanceof \SimplePie\File) {
802
            $this->feed_url = $file->url;
803
            $this->permanent_url = $this->feed_url;
1441 ariadna 804
            $this->file = &$file;
1 efrain 805
            return true;
806
        }
807
        return false;
808
    }
809
 
810
    /**
811
     * Set the raw XML data to parse
812
     *
813
     * Allows you to use a string of RSS/Atom data instead of a remote feed.
814
     *
815
     * If you have a feed available as a string in PHP, you can tell SimplePie
816
     * to parse that data string instead of a remote feed. Any set feed URL
817
     * takes precedence.
818
     *
819
     * @since 1.0 Beta 3
820
     * @param string $data RSS or Atom data as a string.
821
     * @see set_feed_url()
822
     */
823
    public function set_raw_data($data)
824
    {
825
        $this->raw_data = $data;
826
    }
827
 
828
    /**
829
     * Set the default timeout for fetching remote feeds
830
     *
831
     * This allows you to change the maximum time the feed's server to respond
832
     * and send the feed back.
833
     *
834
     * @since 1.0 Beta 3
835
     * @param int $timeout The maximum number of seconds to spend waiting to retrieve a feed.
836
     */
837
    public function set_timeout($timeout = 10)
838
    {
839
        $this->timeout = (int) $timeout;
840
    }
841
 
842
    /**
843
     * Set custom curl options
844
     *
845
     * This allows you to change default curl options
846
     *
847
     * @since 1.0 Beta 3
848
     * @param array $curl_options Curl options to add to default settings
849
     */
850
    public function set_curl_options(array $curl_options = [])
851
    {
852
        $this->curl_options = $curl_options;
853
    }
854
 
855
    /**
856
     * Force SimplePie to use fsockopen() instead of cURL
857
     *
858
     * @since 1.0 Beta 3
859
     * @param bool $enable Force fsockopen() to be used
860
     */
861
    public function force_fsockopen($enable = false)
862
    {
863
        $this->force_fsockopen = (bool) $enable;
864
    }
865
 
866
    /**
867
     * Enable/disable caching in SimplePie.
868
     *
869
     * This option allows you to disable caching all-together in SimplePie.
870
     * However, disabling the cache can lead to longer load times.
871
     *
872
     * @since 1.0 Preview Release
873
     * @param bool $enable Enable caching
874
     */
875
    public function enable_cache($enable = true)
876
    {
877
        $this->enable_cache = (bool) $enable;
878
    }
879
 
880
    /**
881
     * Set a PSR-16 implementation as cache
882
     *
883
     * @param CacheInterface $psr16cache The PSR-16 cache implementation
884
     *
885
     * @return void
886
     */
887
    public function set_cache(CacheInterface $cache)
888
    {
889
        $this->cache = new Psr16($cache);
890
    }
891
 
892
    /**
893
     * SimplePie to continue to fall back to expired cache, if enabled, when
894
     * feed is unavailable.
895
     *
896
     * This tells SimplePie to ignore any file errors and fall back to cache
897
     * instead. This only works if caching is enabled and cached content
898
     * still exists.
899
     *
900
     * @deprecated since SimplePie 1.8.0, expired cache will not be used anymore.
901
     *
902
     * @param bool $enable Force use of cache on fail.
903
     */
904
    public function force_cache_fallback($enable = false)
905
    {
906
        // @trigger_error(sprintf('SimplePie\SimplePie::force_cache_fallback() is deprecated since SimplePie 1.8.0, expired cache will not be used anymore.'), \E_USER_DEPRECATED);
907
        $this->force_cache_fallback = (bool) $enable;
908
    }
909
 
910
    /**
911
     * Set the length of time (in seconds) that the contents of a feed will be
912
     * cached
913
     *
914
     * @param int $seconds The feed content cache duration
915
     */
916
    public function set_cache_duration($seconds = 3600)
917
    {
918
        $this->cache_duration = (int) $seconds;
919
    }
920
 
921
    /**
922
     * Set the length of time (in seconds) that the autodiscovered feed URL will
923
     * be cached
924
     *
925
     * @param int $seconds The autodiscovered feed URL cache duration.
926
     */
927
    public function set_autodiscovery_cache_duration($seconds = 604800)
928
    {
929
        $this->autodiscovery_cache_duration = (int) $seconds;
930
    }
931
 
932
    /**
933
     * Set the file system location where the cached files should be stored
934
     *
935
     * @deprecated since SimplePie 1.8.0, use \SimplePie\SimplePie::set_cache() instead.
936
     *
937
     * @param string $location The file system location.
938
     */
939
    public function set_cache_location($location = './cache')
940
    {
941
        // @trigger_error(sprintf('SimplePie\SimplePie::set_cache_location() is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache()" instead.'), \E_USER_DEPRECATED);
942
        $this->cache_location = (string) $location;
943
    }
944
 
945
    /**
946
     * Return the filename (i.e. hash, without path and without extension) of the file to cache a given URL.
947
     *
948
     * @param string $url The URL of the feed to be cached.
949
     * @return string A filename (i.e. hash, without path and without extension).
950
     */
951
    public function get_cache_filename($url)
952
    {
953
        // Append custom parameters to the URL to avoid cache pollution in case of multiple calls with different parameters.
954
        $url .= $this->force_feed ? '#force_feed' : '';
955
        $options = [];
956
        if ($this->timeout != 10) {
957
            $options[CURLOPT_TIMEOUT] = $this->timeout;
958
        }
959
        if ($this->useragent !== \SimplePie\Misc::get_default_useragent()) {
960
            $options[CURLOPT_USERAGENT] = $this->useragent;
961
        }
962
        if (!empty($this->curl_options)) {
963
            foreach ($this->curl_options as $k => $v) {
964
                $options[$k] = $v;
965
            }
966
        }
967
        if (!empty($options)) {
968
            ksort($options);
969
            $url .= '#' . urlencode(var_export($options, true));
970
        }
971
 
972
        return $this->cache_namefilter->filter($url);
973
    }
974
 
975
    /**
976
     * Set whether feed items should be sorted into reverse chronological order
977
     *
978
     * @param bool $enable Sort as reverse chronological order.
979
     */
980
    public function enable_order_by_date($enable = true)
981
    {
982
        $this->order_by_date = (bool) $enable;
983
    }
984
 
985
    /**
986
     * Set the character encoding used to parse the feed
987
     *
988
     * This overrides the encoding reported by the feed, however it will fall
989
     * back to the normal encoding detection if the override fails
990
     *
991
     * @param string $encoding Character encoding
992
     */
993
    public function set_input_encoding($encoding = false)
994
    {
995
        if ($encoding) {
996
            $this->input_encoding = (string) $encoding;
997
        } else {
998
            $this->input_encoding = false;
999
        }
1000
    }
1001
 
1002
    /**
1003
     * Set how much feed autodiscovery to do
1004
     *
1005
     * @see \SimplePie\SimplePie::LOCATOR_NONE
1006
     * @see \SimplePie\SimplePie::LOCATOR_AUTODISCOVERY
1007
     * @see \SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION
1008
     * @see \SimplePie\SimplePie::LOCATOR_LOCAL_BODY
1009
     * @see \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION
1010
     * @see \SimplePie\SimplePie::LOCATOR_REMOTE_BODY
1011
     * @see \SimplePie\SimplePie::LOCATOR_ALL
1012
     * @param int $level Feed Autodiscovery Level (level can be a combination of the above constants, see bitwise OR operator)
1013
     */
1014
    public function set_autodiscovery_level($level = self::LOCATOR_ALL)
1015
    {
1016
        $this->autodiscovery = (int) $level;
1017
    }
1018
 
1019
    /**
1020
     * Get the class registry
1021
     *
1022
     * Use this to override SimplePie's default classes
1023
     * @see \SimplePie\Registry
1024
     *
1025
     * @return Registry
1026
     */
1027
    public function &get_registry()
1028
    {
1029
        return $this->registry;
1030
    }
1031
 
1032
    /**
1033
     * Set which class SimplePie uses for caching
1034
     *
1035
     * @deprecated since SimplePie 1.3, use {@see set_cache()} instead
1036
     *
1037
     * @param string $class Name of custom class
1038
     *
1039
     * @return boolean True on success, false otherwise
1040
     */
1041
    public function set_cache_class($class = Cache::class)
1042
    {
1043
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::set_cache()" instead.', __METHOD__), \E_USER_DEPRECATED);
1044
 
1045
        return $this->registry->register(Cache::class, $class, true);
1046
    }
1047
 
1048
    /**
1049
     * Set which class SimplePie uses for auto-discovery
1050
     *
1051
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1052
     *
1053
     * @param string $class Name of custom class
1054
     *
1055
     * @return boolean True on success, false otherwise
1056
     */
1057
    public function set_locator_class($class = Locator::class)
1058
    {
1059
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1060
 
1061
        return $this->registry->register(Locator::class, $class, true);
1062
    }
1063
 
1064
    /**
1065
     * Set which class SimplePie uses for XML parsing
1066
     *
1067
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1068
     *
1069
     * @param string $class Name of custom class
1070
     *
1071
     * @return boolean True on success, false otherwise
1072
     */
1073
    public function set_parser_class($class = Parser::class)
1074
    {
1075
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1076
 
1077
        return $this->registry->register(Parser::class, $class, true);
1078
    }
1079
 
1080
    /**
1081
     * Set which class SimplePie uses for remote file fetching
1082
     *
1083
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1084
     *
1085
     * @param string $class Name of custom class
1086
     *
1087
     * @return boolean True on success, false otherwise
1088
     */
1089
    public function set_file_class($class = File::class)
1090
    {
1091
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1092
 
1093
        return $this->registry->register(File::class, $class, true);
1094
    }
1095
 
1096
    /**
1097
     * Set which class SimplePie uses for data sanitization
1098
     *
1099
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1100
     *
1101
     * @param string $class Name of custom class
1102
     *
1103
     * @return boolean True on success, false otherwise
1104
     */
1105
    public function set_sanitize_class($class = Sanitize::class)
1106
    {
1107
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1108
 
1109
        return $this->registry->register(Sanitize::class, $class, true);
1110
    }
1111
 
1112
    /**
1113
     * Set which class SimplePie uses for handling feed items
1114
     *
1115
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1116
     *
1117
     * @param string $class Name of custom class
1118
     *
1119
     * @return boolean True on success, false otherwise
1120
     */
1121
    public function set_item_class($class = Item::class)
1122
    {
1123
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1124
 
1125
        return $this->registry->register(Item::class, $class, true);
1126
    }
1127
 
1128
    /**
1129
     * Set which class SimplePie uses for handling author data
1130
     *
1131
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1132
     *
1133
     * @param string $class Name of custom class
1134
     *
1135
     * @return boolean True on success, false otherwise
1136
     */
1137
    public function set_author_class($class = Author::class)
1138
    {
1139
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1140
 
1141
        return $this->registry->register(Author::class, $class, true);
1142
    }
1143
 
1144
    /**
1145
     * Set which class SimplePie uses for handling category data
1146
     *
1147
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1148
     *
1149
     * @param string $class Name of custom class
1150
     *
1151
     * @return boolean True on success, false otherwise
1152
     */
1153
    public function set_category_class($class = Category::class)
1154
    {
1155
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1156
 
1157
        return $this->registry->register(Category::class, $class, true);
1158
    }
1159
 
1160
    /**
1161
     * Set which class SimplePie uses for feed enclosures
1162
     *
1163
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1164
     *
1165
     * @param string $class Name of custom class
1166
     *
1167
     * @return boolean True on success, false otherwise
1168
     */
1169
    public function set_enclosure_class($class = Enclosure::class)
1170
    {
1171
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1172
 
1173
        return $this->registry->register(Enclosure::class, $class, true);
1174
    }
1175
 
1176
    /**
1177
     * Set which class SimplePie uses for `<media:text>` captions
1178
     *
1179
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1180
     *
1181
     * @param string $class Name of custom class
1182
     *
1183
     * @return boolean True on success, false otherwise
1184
     */
1185
    public function set_caption_class($class = Caption::class)
1186
    {
1187
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1188
 
1189
        return $this->registry->register(Caption::class, $class, true);
1190
    }
1191
 
1192
    /**
1193
     * Set which class SimplePie uses for `<media:copyright>`
1194
     *
1195
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1196
     *
1197
     * @param string $class Name of custom class
1198
     *
1199
     * @return boolean True on success, false otherwise
1200
     */
1201
    public function set_copyright_class($class = Copyright::class)
1202
    {
1203
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1204
 
1205
        return $this->registry->register(Copyright::class, $class, true);
1206
    }
1207
 
1208
    /**
1209
     * Set which class SimplePie uses for `<media:credit>`
1210
     *
1211
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1212
     *
1213
     * @param string $class Name of custom class
1214
     *
1215
     * @return boolean True on success, false otherwise
1216
     */
1217
    public function set_credit_class($class = Credit::class)
1218
    {
1219
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1220
 
1221
        return $this->registry->register(Credit::class, $class, true);
1222
    }
1223
 
1224
    /**
1225
     * Set which class SimplePie uses for `<media:rating>`
1226
     *
1227
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1228
     *
1229
     * @param string $class Name of custom class
1230
     *
1231
     * @return boolean True on success, false otherwise
1232
     */
1233
    public function set_rating_class($class = Rating::class)
1234
    {
1235
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1236
 
1237
        return $this->registry->register(Rating::class, $class, true);
1238
    }
1239
 
1240
    /**
1241
     * Set which class SimplePie uses for `<media:restriction>`
1242
     *
1243
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1244
     *
1245
     * @param string $class Name of custom class
1246
     *
1247
     * @return boolean True on success, false otherwise
1248
     */
1249
    public function set_restriction_class($class = Restriction::class)
1250
    {
1251
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1252
 
1253
        return $this->registry->register(Restriction::class, $class, true);
1254
    }
1255
 
1256
    /**
1257
     * Set which class SimplePie uses for content-type sniffing
1258
     *
1259
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1260
     *
1261
     * @param string $class Name of custom class
1262
     *
1263
     * @return boolean True on success, false otherwise
1264
     */
1265
    public function set_content_type_sniffer_class($class = Sniffer::class)
1266
    {
1267
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1268
 
1269
        return $this->registry->register(Sniffer::class, $class, true);
1270
    }
1271
 
1272
    /**
1273
     * Set which class SimplePie uses item sources
1274
     *
1275
     * @deprecated since SimplePie 1.3, use {@see get_registry()} instead
1276
     *
1277
     * @param string $class Name of custom class
1278
     *
1279
     * @return boolean True on success, false otherwise
1280
     */
1281
    public function set_source_class($class = Source::class)
1282
    {
1283
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
1284
 
1285
        return $this->registry->register(Source::class, $class, true);
1286
    }
1287
 
1288
    /**
1289
     * Set the user agent string
1290
     *
1291
     * @param string $ua New user agent string.
1292
     */
1293
    public function set_useragent($ua = null)
1294
    {
1295
        if ($ua === null) {
1296
            $ua = \SimplePie\Misc::get_default_useragent();
1297
        }
1298
 
1299
        $this->useragent = (string) $ua;
1300
    }
1301
 
1302
    /**
1303
     * Set a namefilter to modify the cache filename with
1304
     *
1305
     * @param NameFilter $filter
1306
     *
1307
     * @return void
1308
     */
1309
    public function set_cache_namefilter(NameFilter $filter): void
1310
    {
1311
        $this->cache_namefilter = $filter;
1312
    }
1313
 
1314
    /**
1315
     * Set callback function to create cache filename with
1316
     *
1317
     * @deprecated since SimplePie 1.8.0, use {@see set_cache_namefilter()} instead
1318
     *
1319
     * @param mixed $function Callback function
1320
     */
1321
    public function set_cache_name_function($function = 'md5')
1322
    {
1323
        // trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache_namefilter()" instead.', __METHOD__), \E_USER_DEPRECATED);
1324
 
1325
        if (is_callable($function)) {
1326
            $this->cache_name_function = $function;
1327
 
1328
            $this->set_cache_namefilter(new CallableNameFilter($this->cache_name_function));
1329
        }
1330
    }
1331
 
1332
    /**
1333
     * Set options to make SP as fast as possible
1334
     *
1335
     * Forgoes a substantial amount of data sanitization in favor of speed. This
1336
     * turns SimplePie into a dumb parser of feeds.
1337
     *
1338
     * @param bool $set Whether to set them or not
1339
     */
1340
    public function set_stupidly_fast($set = false)
1341
    {
1342
        if ($set) {
1343
            $this->enable_order_by_date(false);
1344
            $this->remove_div(false);
1345
            $this->strip_comments(false);
1346
            $this->strip_htmltags(false);
1347
            $this->strip_attributes(false);
1348
            $this->add_attributes(false);
1349
            $this->set_image_handler(false);
1350
            $this->set_https_domains([]);
1351
        }
1352
    }
1353
 
1354
    /**
1355
     * Set maximum number of feeds to check with autodiscovery
1356
     *
1357
     * @param int $max Maximum number of feeds to check
1358
     */
1359
    public function set_max_checked_feeds($max = 10)
1360
    {
1361
        $this->max_checked_feeds = (int) $max;
1362
    }
1363
 
1364
    public function remove_div($enable = true)
1365
    {
1366
        $this->sanitize->remove_div($enable);
1367
    }
1368
 
1369
    public function strip_htmltags($tags = '', $encode = null)
1370
    {
1371
        if ($tags === '') {
1372
            $tags = $this->strip_htmltags;
1373
        }
1374
        $this->sanitize->strip_htmltags($tags);
1375
        if ($encode !== null) {
1441 ariadna 1376
            $this->sanitize->encode_instead_of_strip($encode);
1 efrain 1377
        }
1378
    }
1379
 
1380
    public function encode_instead_of_strip($enable = true)
1381
    {
1382
        $this->sanitize->encode_instead_of_strip($enable);
1383
    }
1384
 
1385
    public function rename_attributes($attribs = '')
1386
    {
1387
        if ($attribs === '') {
1388
            $attribs = $this->rename_attributes;
1389
        }
1390
        $this->sanitize->rename_attributes($attribs);
1391
    }
1392
 
1393
    public function strip_attributes($attribs = '')
1394
    {
1395
        if ($attribs === '') {
1396
            $attribs = $this->strip_attributes;
1397
        }
1398
        $this->sanitize->strip_attributes($attribs);
1399
    }
1400
 
1401
    public function add_attributes($attribs = '')
1402
    {
1403
        if ($attribs === '') {
1404
            $attribs = $this->add_attributes;
1405
        }
1406
        $this->sanitize->add_attributes($attribs);
1407
    }
1408
 
1409
    /**
1410
     * Set the output encoding
1411
     *
1412
     * Allows you to override SimplePie's output to match that of your webpage.
1413
     * This is useful for times when your webpages are not being served as
1414
     * UTF-8. This setting will be obeyed by {@see handle_content_type()}, and
1415
     * is similar to {@see set_input_encoding()}.
1416
     *
1417
     * It should be noted, however, that not all character encodings can support
1418
     * all characters. If your page is being served as ISO-8859-1 and you try
1419
     * to display a Japanese feed, you'll likely see garbled characters.
1420
     * Because of this, it is highly recommended to ensure that your webpages
1421
     * are served as UTF-8.
1422
     *
1423
     * The number of supported character encodings depends on whether your web
1424
     * host supports {@link http://php.net/mbstring mbstring},
1425
     * {@link http://php.net/iconv iconv}, or both. See
1426
     * {@link http://simplepie.org/wiki/faq/Supported_Character_Encodings} for
1427
     * more information.
1428
     *
1429
     * @param string $encoding
1430
     */
1431
    public function set_output_encoding($encoding = 'UTF-8')
1432
    {
1433
        $this->sanitize->set_output_encoding($encoding);
1434
    }
1435
 
1436
    public function strip_comments($strip = false)
1437
    {
1438
        $this->sanitize->strip_comments($strip);
1439
    }
1440
 
1441
    /**
1442
     * Set element/attribute key/value pairs of HTML attributes
1443
     * containing URLs that need to be resolved relative to the feed
1444
     *
1445
     * Defaults to |a|@href, |area|@href, |blockquote|@cite, |del|@cite,
1446
     * |form|@action, |img|@longdesc, |img|@src, |input|@src, |ins|@cite,
1447
     * |q|@cite
1448
     *
1449
     * @since 1.0
1450
     * @param array|null $element_attribute Element/attribute key/value pairs, null for default
1451
     */
1452
    public function set_url_replacements($element_attribute = null)
1453
    {
1454
        $this->sanitize->set_url_replacements($element_attribute);
1455
    }
1456
 
1457
    /**
1458
     * Set the list of domains for which to force HTTPS.
1459
     * @see \SimplePie\Sanitize::set_https_domains()
1460
     * @param array List of HTTPS domains. Example array('biz', 'example.com', 'example.org', 'www.example.net').
1461
     */
1462
    public function set_https_domains($domains = [])
1463
    {
1464
        if (is_array($domains)) {
1465
            $this->sanitize->set_https_domains($domains);
1466
        }
1467
    }
1468
 
1469
    /**
1470
     * Set the handler to enable the display of cached images.
1471
     *
1472
     * @param string $page Web-accessible path to the handler_image.php file.
1473
     * @param string $qs The query string that the value should be passed to.
1474
     */
1475
    public function set_image_handler($page = false, $qs = 'i')
1476
    {
1477
        if ($page !== false) {
1478
            $this->sanitize->set_image_handler($page . '?' . $qs . '=');
1479
        } else {
1480
            $this->image_handler = '';
1481
        }
1482
    }
1483
 
1484
    /**
1485
     * Set the limit for items returned per-feed with multifeeds
1486
     *
1487
     * @param integer $limit The maximum number of items to return.
1488
     */
1489
    public function set_item_limit($limit = 0)
1490
    {
1491
        $this->item_limit = (int) $limit;
1492
    }
1493
 
1494
    /**
1495
     * Enable throwing exceptions
1496
     *
1497
     * @param boolean $enable Should we throw exceptions, or use the old-style error property?
1498
     */
1499
    public function enable_exceptions($enable = true)
1500
    {
1501
        $this->enable_exceptions = $enable;
1502
    }
1503
 
1504
    /**
1505
     * Initialize the feed object
1506
     *
1507
     * This is what makes everything happen. Period. This is where all of the
1508
     * configuration options get processed, feeds are fetched, cached, and
1509
     * parsed, and all of that other good stuff.
1510
     *
1511
     * @return boolean True if successful, false otherwise
1512
     */
1513
    public function init()
1514
    {
1515
        // Check absolute bare minimum requirements.
1516
        if (!extension_loaded('xml') || !extension_loaded('pcre')) {
1517
            $this->error = 'XML or PCRE extensions not loaded!';
1518
            return false;
1519
        }
1520
        // Then check the xml extension is sane (i.e., libxml 2.7.x issue on PHP < 5.2.9 and libxml 2.7.0 to 2.7.2 on any version) if we don't have xmlreader.
1521
        elseif (!extension_loaded('xmlreader')) {
1522
            static $xml_is_sane = null;
1523
            if ($xml_is_sane === null) {
1524
                $parser_check = xml_parser_create();
1525
                xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);
1526
                xml_parser_free($parser_check);
1527
                $xml_is_sane = isset($values[0]['value']);
1528
            }
1529
            if (!$xml_is_sane) {
1530
                return false;
1531
            }
1532
        }
1533
 
1534
        // The default sanitize class gets set in the constructor, check if it has
1535
        // changed.
1536
        if ($this->registry->get_class(Sanitize::class) !== 'SimplePie\Sanitize') {
1537
            $this->sanitize = $this->registry->create(Sanitize::class);
1538
        }
1539
        if (method_exists($this->sanitize, 'set_registry')) {
1540
            $this->sanitize->set_registry($this->registry);
1541
        }
1542
 
1543
        // Pass whatever was set with config options over to the sanitizer.
1544
        // Pass the classes in for legacy support; new classes should use the registry instead
1545
        $this->sanitize->pass_cache_data(
1546
            $this->enable_cache,
1547
            $this->cache_location,
1548
            $this->cache_namefilter,
1549
            $this->registry->get_class(Cache::class),
1550
            $this->cache
1551
        );
1552
        $this->sanitize->pass_file_data($this->registry->get_class(File::class), $this->timeout, $this->useragent, $this->force_fsockopen, $this->curl_options);
1553
 
1554
        if (!empty($this->multifeed_url)) {
1555
            $i = 0;
1556
            $success = 0;
1557
            $this->multifeed_objects = [];
1558
            $this->error = [];
1559
            foreach ($this->multifeed_url as $url) {
1560
                $this->multifeed_objects[$i] = clone $this;
1561
                $this->multifeed_objects[$i]->set_feed_url($url);
1562
                $single_success = $this->multifeed_objects[$i]->init();
1563
                $success |= $single_success;
1564
                if (!$single_success) {
1565
                    $this->error[$i] = $this->multifeed_objects[$i]->error();
1566
                }
1567
                $i++;
1568
            }
1569
            return (bool) $success;
1570
        } elseif ($this->feed_url === null && $this->raw_data === null) {
1571
            return false;
1572
        }
1573
 
1574
        $this->error = null;
1575
        $this->data = [];
1576
        $this->check_modified = false;
1577
        $this->multifeed_objects = [];
1578
        $cache = false;
1579
 
1580
        if ($this->feed_url !== null) {
1581
            $parsed_feed_url = $this->registry->call(Misc::class, 'parse_url', [$this->feed_url]);
1582
 
1583
            // Decide whether to enable caching
1584
            if ($this->enable_cache && $parsed_feed_url['scheme'] !== '') {
1585
                $cache = $this->get_cache($this->feed_url);
1586
            }
1587
 
1588
            // Fetch the data via \SimplePie\File into $this->raw_data
1589
            if (($fetched = $this->fetch_data($cache)) === true) {
1590
                return true;
1591
            } elseif ($fetched === false) {
1592
                return false;
1593
            }
1594
 
1595
            [$headers, $sniffed] = $fetched;
1596
        }
1597
 
1598
        // Empty response check
1599
        if (empty($this->raw_data)) {
1600
            $this->error = "A feed could not be found at `$this->feed_url`. Empty body.";
1601
            $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
1602
            return false;
1603
        }
1604
 
1605
        // Set up array of possible encodings
1606
        $encodings = [];
1607
 
1608
        // First check to see if input has been overridden.
1609
        if ($this->input_encoding !== false) {
1610
            $encodings[] = strtoupper($this->input_encoding);
1611
        }
1612
 
1613
        $application_types = ['application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity'];
1614
        $text_types = ['text/xml', 'text/xml-external-parsed-entity'];
1615
 
1616
        // RFC 3023 (only applies to sniffed content)
1617
        if (isset($sniffed)) {
1618
            if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml') {
1619
                if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset)) {
1620
                    $encodings[] = strtoupper($charset[1]);
1621
                }
1622
                $encodings = array_merge($encodings, $this->registry->call(Misc::class, 'xml_encoding', [$this->raw_data, &$this->registry]));
1623
                $encodings[] = 'UTF-8';
1624
            } elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml') {
1625
                if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset)) {
1626
                    $encodings[] = strtoupper($charset[1]);
1627
                }
1628
                $encodings[] = 'US-ASCII';
1629
            }
1630
            // Text MIME-type default
1631
            elseif (substr($sniffed, 0, 5) === 'text/') {
1632
                $encodings[] = 'UTF-8';
1633
            }
1634
        }
1635
 
1636
        // Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
1637
        $encodings = array_merge($encodings, $this->registry->call(Misc::class, 'xml_encoding', [$this->raw_data, &$this->registry]));
1638
        $encodings[] = 'UTF-8';
1639
        $encodings[] = 'ISO-8859-1';
1640
 
1641
        // There's no point in trying an encoding twice
1642
        $encodings = array_unique($encodings);
1643
 
1644
        // Loop through each possible encoding, till we return something, or run out of possibilities
1645
        foreach ($encodings as $encoding) {
1646
            // Change the encoding to UTF-8 (as we always use UTF-8 internally)
1647
            if ($utf8_data = $this->registry->call(Misc::class, 'change_encoding', [$this->raw_data, $encoding, 'UTF-8'])) {
1648
                // Create new parser
1649
                $parser = $this->registry->create(Parser::class);
1650
 
1651
                // If it's parsed fine
1652
                if ($parser->parse($utf8_data, 'UTF-8', $this->permanent_url)) {
1653
                    $this->data = $parser->get_data();
1654
                    if (!($this->get_type() & ~self::TYPE_NONE)) {
1655
                        $this->error = "A feed could not be found at `$this->feed_url`. This does not appear to be a valid RSS or Atom feed.";
1656
                        $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
1657
                        return false;
1658
                    }
1659
 
1660
                    if (isset($headers)) {
1661
                        $this->data['headers'] = $headers;
1662
                    }
1663
                    $this->data['build'] = \SimplePie\Misc::get_build();
1664
 
1665
                    // Cache the file if caching is enabled
1666
                    $this->data['cache_expiration_time'] = $this->cache_duration + time();
1441 ariadna 1667
                    if ($cache && !$cache->set_data($this->get_cache_filename($this->feed_url), $this->data, $this->cache_duration)) {
1 efrain 1668
                        trigger_error("$this->cache_location is not writable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
1669
                    }
1670
                    return true;
1671
                }
1672
            }
1673
        }
1674
 
1675
        if (isset($parser)) {
1676
            // We have an error, just set \SimplePie\Misc::error to it and quit
1677
            $this->error = $this->feed_url;
1678
            $this->error .= sprintf(' is invalid XML, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
1679
        } else {
1680
            $this->error = 'The data could not be converted to UTF-8.';
1681
            if (!extension_loaded('mbstring') && !extension_loaded('iconv') && !class_exists('\UConverter')) {
1682
                $this->error .= ' You MUST have either the iconv, mbstring or intl (PHP 5.5+) extension installed and enabled.';
1683
            } else {
1684
                $missingExtensions = [];
1685
                if (!extension_loaded('iconv')) {
1686
                    $missingExtensions[] = 'iconv';
1687
                }
1688
                if (!extension_loaded('mbstring')) {
1689
                    $missingExtensions[] = 'mbstring';
1690
                }
1691
                if (!class_exists('\UConverter')) {
1692
                    $missingExtensions[] = 'intl (PHP 5.5+)';
1693
                }
1694
                $this->error .= ' Try installing/enabling the ' . implode(' or ', $missingExtensions) . ' extension.';
1695
            }
1696
        }
1697
 
1698
        $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
1699
 
1700
        return false;
1701
    }
1702
 
1703
    /**
1704
     * Fetch the data via \SimplePie\File
1705
     *
1706
     * If the data is already cached, attempt to fetch it from there instead
1707
     * @param Base|DataCache|false $cache Cache handler, or false to not load from the cache
1708
     * @return array|true Returns true if the data was loaded from the cache, or an array of HTTP headers and sniffed type
1709
     */
1710
    protected function fetch_data(&$cache)
1711
    {
1712
        if (is_object($cache) && $cache instanceof Base) {
1713
            // @trigger_error(sprintf('Providing $cache as "\SimplePie\Cache\Base" in %s() is deprecated since SimplePie 1.8.0, please provide "\SimplePie\Cache\DataCache" implementation instead.', __METHOD__), \E_USER_DEPRECATED);
1714
            $cache = new BaseDataCache($cache);
1715
        }
1716
 
1441 ariadna 1717
        if ($cache !== false && !$cache instanceof DataCache) {
1 efrain 1718
            throw new InvalidArgumentException(sprintf(
1719
                '%s(): Argument #1 ($cache) must be of type %s|false',
1720
                __METHOD__,
1721
                DataCache::class
1722
            ), 1);
1723
        }
1724
 
1725
        $cacheKey = $this->get_cache_filename($this->feed_url);
1726
 
1727
        // If it's enabled, use the cache
1728
        if ($cache) {
1729
            // Load the Cache
1730
            $this->data = $cache->get_data($cacheKey, []);
1731
 
1732
            if (!empty($this->data)) {
1733
                // If the cache is for an outdated build of SimplePie
1734
                if (!isset($this->data['build']) || $this->data['build'] !== \SimplePie\Misc::get_build()) {
1735
                    $cache->delete_data($cacheKey);
1736
                    $this->data = [];
1737
                }
1738
                // If we've hit a collision just rerun it with caching disabled
1739
                elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url) {
1740
                    $cache = false;
1741
                    $this->data = [];
1742
                }
1743
                // If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL.
1744
                elseif (isset($this->data['feed_url'])) {
1745
                    // Do not need to do feed autodiscovery yet.
1746
                    if ($this->data['feed_url'] !== $this->data['url']) {
1747
                        $this->set_feed_url($this->data['feed_url']);
1748
                        $this->data['url'] = $this->data['feed_url'];
1749
 
1750
                        $cache->set_data($this->get_cache_filename($this->feed_url), $this->data, $this->autodiscovery_cache_duration);
1751
 
1752
                        return $this->init();
1753
                    }
1754
 
1755
                    $cache->delete_data($this->get_cache_filename($this->feed_url));
1756
                    $this->data = [];
1757
                }
1758
                // Check if the cache has been updated
1759
                elseif (isset($this->data['cache_expiration_time']) && $this->data['cache_expiration_time'] > time()) {
1760
                    // Want to know if we tried to send last-modified and/or etag headers
1761
                    // when requesting this file. (Note that it's up to the file to
1762
                    // support this, but we don't always send the headers either.)
1763
                    $this->check_modified = true;
1764
                    if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag'])) {
1765
                        $headers = [
1766
                            'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
1767
                        ];
1768
                        if (isset($this->data['headers']['last-modified'])) {
1769
                            $headers['if-modified-since'] = $this->data['headers']['last-modified'];
1770
                        }
1771
                        if (isset($this->data['headers']['etag'])) {
1772
                            $headers['if-none-match'] = $this->data['headers']['etag'];
1773
                        }
1774
 
1441 ariadna 1775
                        $file = $this->registry->create(File::class, [$this->feed_url, $this->timeout / 10, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]);
1 efrain 1776
                        $this->status_code = $file->status_code;
1777
 
1778
                        if ($file->success) {
1779
                            if ($file->status_code === 304) {
1780
                                // Set raw_data to false here too, to signify that the cache
1781
                                // is still valid.
1782
                                $this->raw_data = false;
1783
                                $cache->set_data($cacheKey, $this->data, $this->cache_duration);
1784
                                return true;
1785
                            }
1786
                        } else {
1787
                            $this->check_modified = false;
1788
                            if ($this->force_cache_fallback) {
1789
                                $cache->set_data($cacheKey, $this->data, $this->cache_duration);
1790
                                return true;
1791
                            }
1792
 
1793
                            unset($file);
1794
                        }
1795
                    }
1796
                }
1797
                // If the cache is still valid, just return true
1798
                else {
1799
                    $this->raw_data = false;
1800
                    return true;
1801
                }
1802
            }
1803
            // If the cache is empty
1804
            else {
1805
                $this->data = [];
1806
            }
1807
        }
1808
 
1809
        // If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it.
1810
        if (!isset($file)) {
1811
            if ($this->file instanceof \SimplePie\File && $this->file->url === $this->feed_url) {
1441 ariadna 1812
                $file = &$this->file;
1 efrain 1813
            } else {
1814
                $headers = [
1815
                    'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
1816
                ];
1817
                $file = $this->registry->create(File::class, [$this->feed_url, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]);
1818
            }
1819
        }
1820
        $this->status_code = $file->status_code;
1821
 
1822
        // If the file connection has an error, set SimplePie::error to that and quit
1823
        if (!$file->success && !($file->method & self::FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300))) {
1824
            $this->error = $file->error;
1825
            return !empty($this->data);
1826
        }
1827
 
1828
        if (!$this->force_feed) {
1829
            // Check if the supplied URL is a feed, if it isn't, look for it.
1830
            $locate = $this->registry->create(Locator::class, [&$file, $this->timeout, $this->useragent, $this->max_checked_feeds, $this->force_fsockopen, $this->curl_options]);
1831
 
1832
            if (!$locate->is_feed($file)) {
1833
                $copyStatusCode = $file->status_code;
1441 ariadna 1834
                $copyContentType = $file->headers['content-type'] ?? '';
1 efrain 1835
                try {
1836
                    $microformats = false;
1837
                    if (class_exists('DOMXpath') && function_exists('Mf2\parse')) {
1838
                        $doc = new \DOMDocument();
1839
                        @$doc->loadHTML($file->body);
1840
                        $xpath = new \DOMXpath($doc);
1841
                        // Check for both h-feed and h-entry, as both a feed with no entries
1842
                        // and a list of entries without an h-feed wrapper are both valid.
1843
                        $query = '//*[contains(concat(" ", @class, " "), " h-feed ") or '.
1844
                            'contains(concat(" ", @class, " "), " h-entry ")]';
1845
                        $result = $xpath->query($query);
1846
                        $microformats = $result->length !== 0;
1847
                    }
1848
                    // Now also do feed discovery, but if microformats were found don't
1849
                    // overwrite the current value of file.
1850
                    $discovered = $locate->find(
1851
                        $this->autodiscovery,
1852
                        $this->all_discovered_feeds
1853
                    );
1854
                    if ($microformats) {
1855
                        if ($hub = $locate->get_rel_link('hub')) {
1856
                            $self = $locate->get_rel_link('self');
1857
                            $this->store_links($file, $hub, $self);
1858
                        }
1859
                        // Push the current file onto all_discovered feeds so the user can
1860
                        // be shown this as one of the options.
1861
                        if (isset($this->all_discovered_feeds)) {
1862
                            $this->all_discovered_feeds[] = $file;
1863
                        }
1864
                    } else {
1865
                        if ($discovered) {
1866
                            $file = $discovered;
1867
                        } else {
1868
                            // We need to unset this so that if SimplePie::set_file() has
1869
                            // been called that object is untouched
1870
                            unset($file);
1871
                            $this->error = "A feed could not be found at `$this->feed_url`; the status code is `$copyStatusCode` and content-type is `$copyContentType`";
1872
                            $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
1873
                            return false;
1874
                        }
1875
                    }
1876
                } catch (\SimplePie\Exception $e) {
1877
                    // We need to unset this so that if SimplePie::set_file() has been called that object is untouched
1878
                    unset($file);
1879
                    // This is usually because DOMDocument doesn't exist
1880
                    $this->error = $e->getMessage();
1881
                    $this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, $e->getFile(), $e->getLine()]);
1882
                    return false;
1883
                }
1884
 
1885
                if ($cache) {
1886
                    $this->data = [
1887
                        'url' => $this->feed_url,
1888
                        'feed_url' => $file->url,
1889
                        'build' => \SimplePie\Misc::get_build(),
1890
                        'cache_expiration_time' => $this->cache_duration + time(),
1891
                    ];
1892
 
1893
                    if (!$cache->set_data($cacheKey, $this->data, $this->cache_duration)) {
1894
                        trigger_error("$this->cache_location is not writable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
1895
                    }
1896
                }
1897
            }
1898
            $this->feed_url = $file->url;
1899
            $locate = null;
1900
        }
1901
 
1902
        $this->raw_data = $file->body;
1903
        $this->permanent_url = $file->permanent_url;
1904
        $headers = $file->headers;
1905
        $sniffer = $this->registry->create(Sniffer::class, [&$file]);
1906
        $sniffed = $sniffer->get_type();
1907
 
1908
        return [$headers, $sniffed];
1909
    }
1910
 
1911
    /**
1912
     * Get the error message for the occurred error
1913
     *
1914
     * @return string|array Error message, or array of messages for multifeeds
1915
     */
1916
    public function error()
1917
    {
1918
        return $this->error;
1919
    }
1920
 
1921
    /**
1922
     * Get the last HTTP status code
1923
     *
1924
     * @return int Status code
1925
     */
1926
    public function status_code()
1927
    {
1928
        return $this->status_code;
1929
    }
1930
 
1931
    /**
1932
     * Get the raw XML
1933
     *
1934
     * This is the same as the old `$feed->enable_xml_dump(true)`, but returns
1935
     * the data instead of printing it.
1936
     *
1937
     * @return string|boolean Raw XML data, false if the cache is used
1938
     */
1939
    public function get_raw_data()
1940
    {
1941
        return $this->raw_data;
1942
    }
1943
 
1944
    /**
1945
     * Get the character encoding used for output
1946
     *
1947
     * @since Preview Release
1948
     * @return string
1949
     */
1950
    public function get_encoding()
1951
    {
1952
        return $this->sanitize->output_encoding;
1953
    }
1954
 
1955
    /**
1956
     * Send the content-type header with correct encoding
1957
     *
1958
     * This method ensures that the SimplePie-enabled page is being served with
1959
     * the correct {@link http://www.iana.org/assignments/media-types/ mime-type}
1960
     * and character encoding HTTP headers (character encoding determined by the
1961
     * {@see set_output_encoding} config option).
1962
     *
1963
     * This won't work properly if any content or whitespace has already been
1964
     * sent to the browser, because it relies on PHP's
1965
     * {@link http://php.net/header header()} function, and these are the
1966
     * circumstances under which the function works.
1967
     *
1968
     * Because it's setting these settings for the entire page (as is the nature
1969
     * of HTTP headers), this should only be used once per page (again, at the
1970
     * top).
1971
     *
1972
     * @param string $mime MIME type to serve the page as
1973
     */
1974
    public function handle_content_type($mime = 'text/html')
1975
    {
1976
        if (!headers_sent()) {
1977
            $header = "Content-type: $mime;";
1978
            if ($this->get_encoding()) {
1979
                $header .= ' charset=' . $this->get_encoding();
1980
            } else {
1981
                $header .= ' charset=UTF-8';
1982
            }
1983
            header($header);
1984
        }
1985
    }
1986
 
1987
    /**
1988
     * Get the type of the feed
1989
     *
1990
     * This returns a \SimplePie\SimplePie::TYPE_* constant, which can be tested against
1991
     * using {@link http://php.net/language.operators.bitwise bitwise operators}
1992
     *
1993
     * @since 0.8 (usage changed to using constants in 1.0)
1994
     * @see \SimplePie\SimplePie::TYPE_NONE Unknown.
1995
     * @see \SimplePie\SimplePie::TYPE_RSS_090 RSS 0.90.
1996
     * @see \SimplePie\SimplePie::TYPE_RSS_091_NETSCAPE RSS 0.91 (Netscape).
1997
     * @see \SimplePie\SimplePie::TYPE_RSS_091_USERLAND RSS 0.91 (Userland).
1998
     * @see \SimplePie\SimplePie::TYPE_RSS_091 RSS 0.91.
1999
     * @see \SimplePie\SimplePie::TYPE_RSS_092 RSS 0.92.
2000
     * @see \SimplePie\SimplePie::TYPE_RSS_093 RSS 0.93.
2001
     * @see \SimplePie\SimplePie::TYPE_RSS_094 RSS 0.94.
2002
     * @see \SimplePie\SimplePie::TYPE_RSS_10 RSS 1.0.
2003
     * @see \SimplePie\SimplePie::TYPE_RSS_20 RSS 2.0.x.
2004
     * @see \SimplePie\SimplePie::TYPE_RSS_RDF RDF-based RSS.
2005
     * @see \SimplePie\SimplePie::TYPE_RSS_SYNDICATION Non-RDF-based RSS (truly intended as syndication format).
2006
     * @see \SimplePie\SimplePie::TYPE_RSS_ALL Any version of RSS.
2007
     * @see \SimplePie\SimplePie::TYPE_ATOM_03 Atom 0.3.
2008
     * @see \SimplePie\SimplePie::TYPE_ATOM_10 Atom 1.0.
2009
     * @see \SimplePie\SimplePie::TYPE_ATOM_ALL Any version of Atom.
2010
     * @see \SimplePie\SimplePie::TYPE_ALL Any known/supported feed type.
2011
     * @return int \SimplePie\SimplePie::TYPE_* constant
2012
     */
2013
    public function get_type()
2014
    {
2015
        if (!isset($this->data['type'])) {
2016
            $this->data['type'] = self::TYPE_ALL;
2017
            if (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'])) {
2018
                $this->data['type'] &= self::TYPE_ATOM_10;
2019
            } elseif (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'])) {
2020
                $this->data['type'] &= self::TYPE_ATOM_03;
2021
            } elseif (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'])) {
2022
                if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['channel'])
2023
                || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['image'])
2024
                || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['item'])
2025
                || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['textinput'])) {
2026
                    $this->data['type'] &= self::TYPE_RSS_10;
2027
                }
2028
                if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['channel'])
2029
                || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['image'])
2030
                || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['item'])
2031
                || isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['textinput'])) {
2032
                    $this->data['type'] &= self::TYPE_RSS_090;
2033
                }
2034
            } elseif (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'])) {
2035
                $this->data['type'] &= self::TYPE_RSS_ALL;
2036
                if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version'])) {
2037
                    switch (trim($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version'])) {
2038
                        case '0.91':
2039
                            $this->data['type'] &= self::TYPE_RSS_091;
2040
                            if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][self::NAMESPACE_RSS_20]['skiphours']['hour'][0]['data'])) {
2041
                                switch (trim($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][self::NAMESPACE_RSS_20]['skiphours']['hour'][0]['data'])) {
2042
                                    case '0':
2043
                                        $this->data['type'] &= self::TYPE_RSS_091_NETSCAPE;
2044
                                        break;
2045
 
2046
                                    case '24':
2047
                                        $this->data['type'] &= self::TYPE_RSS_091_USERLAND;
2048
                                        break;
2049
                                }
2050
                            }
2051
                            break;
2052
 
2053
                        case '0.92':
2054
                            $this->data['type'] &= self::TYPE_RSS_092;
2055
                            break;
2056
 
2057
                        case '0.93':
2058
                            $this->data['type'] &= self::TYPE_RSS_093;
2059
                            break;
2060
 
2061
                        case '0.94':
2062
                            $this->data['type'] &= self::TYPE_RSS_094;
2063
                            break;
2064
 
2065
                        case '2.0':
2066
                            $this->data['type'] &= self::TYPE_RSS_20;
2067
                            break;
2068
                    }
2069
                }
2070
            } else {
2071
                $this->data['type'] = self::TYPE_NONE;
2072
            }
2073
        }
2074
        return $this->data['type'];
2075
    }
2076
 
2077
    /**
2078
     * Get the URL for the feed
2079
     *
2080
     * When the 'permanent' mode is enabled, returns the original feed URL,
2081
     * except in the case of an `HTTP 301 Moved Permanently` status response,
2082
     * in which case the location of the first redirection is returned.
2083
     *
2084
     * When the 'permanent' mode is disabled (default),
2085
     * may or may not be different from the URL passed to {@see set_feed_url()},
2086
     * depending on whether auto-discovery was used, and whether there were
2087
     * any redirects along the way.
2088
     *
2089
     * @since Preview Release (previously called `get_feed_url()` since SimplePie 0.8.)
2090
     * @todo Support <itunes:new-feed-url>
2091
     * @todo Also, |atom:link|@rel=self
2092
     * @param bool $permanent Permanent mode to return only the original URL or the first redirection
2093
     * iff it is a 301 redirection
2094
     * @return string|null
2095
     */
2096
    public function subscribe_url($permanent = false)
2097
    {
2098
        if ($permanent) {
2099
            if ($this->permanent_url !== null) {
2100
                // sanitize encodes ampersands which are required when used in a url.
2101
                return str_replace(
2102
                    '&amp;',
2103
                    '&',
2104
                    $this->sanitize(
2105
                        $this->permanent_url,
2106
                        self::CONSTRUCT_IRI
2107
                    )
2108
                );
2109
            }
2110
        } else {
2111
            if ($this->feed_url !== null) {
2112
                return str_replace(
2113
                    '&amp;',
2114
                    '&',
2115
                    $this->sanitize(
2116
                        $this->feed_url,
2117
                        self::CONSTRUCT_IRI
2118
                    )
2119
                );
2120
            }
2121
        }
2122
        return null;
2123
    }
2124
 
2125
    /**
2126
     * Get data for an feed-level element
2127
     *
2128
     * This method allows you to get access to ANY element/attribute that is a
2129
     * sub-element of the opening feed tag.
2130
     *
2131
     * The return value is an indexed array of elements matching the given
2132
     * namespace and tag name. Each element has `attribs`, `data` and `child`
2133
     * subkeys. For `attribs` and `child`, these contain namespace subkeys.
2134
     * `attribs` then has one level of associative name => value data (where
2135
     * `value` is a string) after the namespace. `child` has tag-indexed keys
2136
     * after the namespace, each member of which is an indexed array matching
2137
     * this same format.
2138
     *
2139
     * For example:
2140
     * <pre>
2141
     * // This is probably a bad example because we already support
2142
     * // <media:content> natively, but it shows you how to parse through
2143
     * // the nodes.
2144
     * $group = $item->get_item_tags(\SimplePie\SimplePie::NAMESPACE_MEDIARSS, 'group');
2145
     * $content = $group[0]['child'][\SimplePie\SimplePie::NAMESPACE_MEDIARSS]['content'];
2146
     * $file = $content[0]['attribs']['']['url'];
2147
     * echo $file;
2148
     * </pre>
2149
     *
2150
     * @since 1.0
2151
     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
2152
     * @param string $namespace The URL of the XML namespace of the elements you're trying to access
2153
     * @param string $tag Tag name
2154
     * @return array
2155
     */
2156
    public function get_feed_tags($namespace, $tag)
2157
    {
2158
        $type = $this->get_type();
2159
        if ($type & self::TYPE_ATOM_10) {
2160
            if (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag])) {
2161
                return $this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag];
2162
            }
2163
        }
2164
        if ($type & self::TYPE_ATOM_03) {
2165
            if (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag])) {
2166
                return $this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag];
2167
            }
2168
        }
2169
        if ($type & self::TYPE_RSS_RDF) {
2170
            if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag])) {
2171
                return $this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag];
2172
            }
2173
        }
2174
        if ($type & self::TYPE_RSS_SYNDICATION) {
2175
            if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag])) {
2176
                return $this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag];
2177
            }
2178
        }
2179
        return null;
2180
    }
2181
 
2182
    /**
2183
     * Get data for an channel-level element
2184
     *
2185
     * This method allows you to get access to ANY element/attribute in the
2186
     * channel/header section of the feed.
2187
     *
2188
     * See {@see SimplePie::get_feed_tags()} for a description of the return value
2189
     *
2190
     * @since 1.0
2191
     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
2192
     * @param string $namespace The URL of the XML namespace of the elements you're trying to access
2193
     * @param string $tag Tag name
2194
     * @return array
2195
     */
2196
    public function get_channel_tags($namespace, $tag)
2197
    {
2198
        $type = $this->get_type();
2199
        if ($type & self::TYPE_ATOM_ALL) {
2200
            if ($return = $this->get_feed_tags($namespace, $tag)) {
2201
                return $return;
2202
            }
2203
        }
2204
        if ($type & self::TYPE_RSS_10) {
2205
            if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'channel')) {
2206
                if (isset($channel[0]['child'][$namespace][$tag])) {
2207
                    return $channel[0]['child'][$namespace][$tag];
2208
                }
2209
            }
2210
        }
2211
        if ($type & self::TYPE_RSS_090) {
2212
            if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'channel')) {
2213
                if (isset($channel[0]['child'][$namespace][$tag])) {
2214
                    return $channel[0]['child'][$namespace][$tag];
2215
                }
2216
            }
2217
        }
2218
        if ($type & self::TYPE_RSS_SYNDICATION) {
2219
            if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_20, 'channel')) {
2220
                if (isset($channel[0]['child'][$namespace][$tag])) {
2221
                    return $channel[0]['child'][$namespace][$tag];
2222
                }
2223
            }
2224
        }
2225
        return null;
2226
    }
2227
 
2228
    /**
2229
     * Get data for an channel-level element
2230
     *
2231
     * This method allows you to get access to ANY element/attribute in the
2232
     * image/logo section of the feed.
2233
     *
2234
     * See {@see SimplePie::get_feed_tags()} for a description of the return value
2235
     *
2236
     * @since 1.0
2237
     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
2238
     * @param string $namespace The URL of the XML namespace of the elements you're trying to access
2239
     * @param string $tag Tag name
2240
     * @return array
2241
     */
2242
    public function get_image_tags($namespace, $tag)
2243
    {
2244
        $type = $this->get_type();
2245
        if ($type & self::TYPE_RSS_10) {
2246
            if ($image = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'image')) {
2247
                if (isset($image[0]['child'][$namespace][$tag])) {
2248
                    return $image[0]['child'][$namespace][$tag];
2249
                }
2250
            }
2251
        }
2252
        if ($type & self::TYPE_RSS_090) {
2253
            if ($image = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'image')) {
2254
                if (isset($image[0]['child'][$namespace][$tag])) {
2255
                    return $image[0]['child'][$namespace][$tag];
2256
                }
2257
            }
2258
        }
2259
        if ($type & self::TYPE_RSS_SYNDICATION) {
2260
            if ($image = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'image')) {
2261
                if (isset($image[0]['child'][$namespace][$tag])) {
2262
                    return $image[0]['child'][$namespace][$tag];
2263
                }
2264
            }
2265
        }
2266
        return null;
2267
    }
2268
 
2269
    /**
2270
     * Get the base URL value from the feed
2271
     *
2272
     * Uses `<xml:base>` if available, otherwise uses the first link in the
2273
     * feed, or failing that, the URL of the feed itself.
2274
     *
2275
     * @see get_link
2276
     * @see subscribe_url
2277
     *
2278
     * @param array $element
2279
     * @return string
2280
     */
2281
    public function get_base($element = [])
2282
    {
2283
        if (!empty($element['xml_base_explicit']) && isset($element['xml_base'])) {
2284
            return $element['xml_base'];
2285
        } elseif ($this->get_link() !== null) {
2286
            return $this->get_link();
2287
        }
2288
 
2289
        return $this->subscribe_url();
2290
    }
2291
 
2292
    /**
2293
     * Sanitize feed data
2294
     *
2295
     * @access private
2296
     * @see \SimplePie\Sanitize::sanitize()
2297
     * @param string $data Data to sanitize
2298
     * @param int $type One of the \SimplePie\SimplePie::CONSTRUCT_* constants
2299
     * @param string $base Base URL to resolve URLs against
2300
     * @return string Sanitized data
2301
     */
2302
    public function sanitize($data, $type, $base = '')
2303
    {
2304
        try {
2305
            return $this->sanitize->sanitize($data, $type, $base);
2306
        } catch (\SimplePie\Exception $e) {
2307
            if (!$this->enable_exceptions) {
2308
                $this->error = $e->getMessage();
2309
                $this->registry->call(Misc::class, 'error', [$this->error, E_USER_WARNING, $e->getFile(), $e->getLine()]);
2310
                return '';
2311
            }
2312
 
2313
            throw $e;
2314
        }
2315
    }
2316
 
2317
    /**
2318
     * Get the title of the feed
2319
     *
2320
     * Uses `<atom:title>`, `<title>` or `<dc:title>`
2321
     *
2322
     * @since 1.0 (previously called `get_feed_title` since 0.8)
2323
     * @return string|null
2324
     */
2325
    public function get_title()
2326
    {
2327
        if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'title')) {
2328
            return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
2329
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'title')) {
2330
            return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
2331
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'title')) {
2332
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
2333
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'title')) {
2334
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
2335
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'title')) {
2336
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
2337
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'title')) {
2338
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2339
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'title')) {
2340
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2341
        }
2342
 
2343
        return null;
2344
    }
2345
 
2346
    /**
2347
     * Get a category for the feed
2348
     *
2349
     * @since Unknown
2350
     * @param int $key The category that you want to return. Remember that arrays begin with 0, not 1
2351
     * @return \SimplePie\Category|null
2352
     */
2353
    public function get_category($key = 0)
2354
    {
2355
        $categories = $this->get_categories();
2356
        if (isset($categories[$key])) {
2357
            return $categories[$key];
2358
        }
2359
 
2360
        return null;
2361
    }
2362
 
2363
    /**
2364
     * Get all categories for the feed
2365
     *
2366
     * Uses `<atom:category>`, `<category>` or `<dc:subject>`
2367
     *
2368
     * @since Unknown
2369
     * @return array|null List of {@see \SimplePie\Category} objects
2370
     */
2371
    public function get_categories()
2372
    {
2373
        $categories = [];
2374
 
2375
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'category') as $category) {
2376
            $term = null;
2377
            $scheme = null;
2378
            $label = null;
2379
            if (isset($category['attribs']['']['term'])) {
2380
                $term = $this->sanitize($category['attribs']['']['term'], self::CONSTRUCT_TEXT);
2381
            }
2382
            if (isset($category['attribs']['']['scheme'])) {
2383
                $scheme = $this->sanitize($category['attribs']['']['scheme'], self::CONSTRUCT_TEXT);
2384
            }
2385
            if (isset($category['attribs']['']['label'])) {
2386
                $label = $this->sanitize($category['attribs']['']['label'], self::CONSTRUCT_TEXT);
2387
            }
2388
            $categories[] = $this->registry->create(Category::class, [$term, $scheme, $label]);
2389
        }
2390
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_RSS_20, 'category') as $category) {
2391
            // This is really the label, but keep this as the term also for BC.
2392
            // Label will also work on retrieving because that falls back to term.
2393
            $term = $this->sanitize($category['data'], self::CONSTRUCT_TEXT);
2394
            if (isset($category['attribs']['']['domain'])) {
2395
                $scheme = $this->sanitize($category['attribs']['']['domain'], self::CONSTRUCT_TEXT);
2396
            } else {
2397
                $scheme = null;
2398
            }
2399
            $categories[] = $this->registry->create(Category::class, [$term, $scheme, null]);
2400
        }
2401
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_11, 'subject') as $category) {
2402
            $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], self::CONSTRUCT_TEXT), null, null]);
2403
        }
2404
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_10, 'subject') as $category) {
2405
            $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], self::CONSTRUCT_TEXT), null, null]);
2406
        }
2407
 
2408
        if (!empty($categories)) {
2409
            return array_unique($categories);
2410
        }
2411
 
2412
        return null;
2413
    }
2414
 
2415
    /**
2416
     * Get an author for the feed
2417
     *
2418
     * @since 1.1
2419
     * @param int $key The author that you want to return. Remember that arrays begin with 0, not 1
2420
     * @return \SimplePie\Author|null
2421
     */
2422
    public function get_author($key = 0)
2423
    {
2424
        $authors = $this->get_authors();
2425
        if (isset($authors[$key])) {
2426
            return $authors[$key];
2427
        }
2428
 
2429
        return null;
2430
    }
2431
 
2432
    /**
2433
     * Get all authors for the feed
2434
     *
2435
     * Uses `<atom:author>`, `<author>`, `<dc:creator>` or `<itunes:author>`
2436
     *
2437
     * @since 1.1
2438
     * @return array|null List of {@see \SimplePie\Author} objects
2439
     */
2440
    public function get_authors()
2441
    {
2442
        $authors = [];
2443
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'author') as $author) {
2444
            $name = null;
2445
            $uri = null;
2446
            $email = null;
2447
            if (isset($author['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'])) {
2448
                $name = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'], self::CONSTRUCT_TEXT);
2449
            }
2450
            if (isset($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
2451
                $uri = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]));
2452
            }
2453
            if (isset($author['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'])) {
2454
                $email = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'], self::CONSTRUCT_TEXT);
2455
            }
2456
            if ($name !== null || $email !== null || $uri !== null) {
2457
                $authors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
2458
            }
2459
        }
2460
        if ($author = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'author')) {
2461
            $name = null;
2462
            $url = null;
2463
            $email = null;
2464
            if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'])) {
2465
                $name = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'], self::CONSTRUCT_TEXT);
2466
            }
2467
            if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'])) {
2468
                $url = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]));
2469
            }
2470
            if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'])) {
2471
                $email = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'], self::CONSTRUCT_TEXT);
2472
            }
2473
            if ($name !== null || $email !== null || $url !== null) {
2474
                $authors[] = $this->registry->create(Author::class, [$name, $url, $email]);
2475
            }
2476
        }
2477
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_11, 'creator') as $author) {
2478
            $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]);
2479
        }
2480
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_10, 'creator') as $author) {
2481
            $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]);
2482
        }
2483
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_ITUNES, 'author') as $author) {
2484
            $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]);
2485
        }
2486
 
2487
        if (!empty($authors)) {
2488
            return array_unique($authors);
2489
        }
2490
 
2491
        return null;
2492
    }
2493
 
2494
    /**
2495
     * Get a contributor for the feed
2496
     *
2497
     * @since 1.1
2498
     * @param int $key The contrbutor that you want to return. Remember that arrays begin with 0, not 1
2499
     * @return \SimplePie\Author|null
2500
     */
2501
    public function get_contributor($key = 0)
2502
    {
2503
        $contributors = $this->get_contributors();
2504
        if (isset($contributors[$key])) {
2505
            return $contributors[$key];
2506
        }
2507
 
2508
        return null;
2509
    }
2510
 
2511
    /**
2512
     * Get all contributors for the feed
2513
     *
2514
     * Uses `<atom:contributor>`
2515
     *
2516
     * @since 1.1
2517
     * @return array|null List of {@see \SimplePie\Author} objects
2518
     */
2519
    public function get_contributors()
2520
    {
2521
        $contributors = [];
2522
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'contributor') as $contributor) {
2523
            $name = null;
2524
            $uri = null;
2525
            $email = null;
2526
            if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'])) {
2527
                $name = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'], self::CONSTRUCT_TEXT);
2528
            }
2529
            if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
2530
                $uri = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]));
2531
            }
2532
            if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'])) {
2533
                $email = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'], self::CONSTRUCT_TEXT);
2534
            }
2535
            if ($name !== null || $email !== null || $uri !== null) {
2536
                $contributors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
2537
            }
2538
        }
2539
        foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'contributor') as $contributor) {
2540
            $name = null;
2541
            $url = null;
2542
            $email = null;
2543
            if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'])) {
2544
                $name = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'], self::CONSTRUCT_TEXT);
2545
            }
2546
            if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'])) {
2547
                $url = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]));
2548
            }
2549
            if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'])) {
2550
                $email = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'], self::CONSTRUCT_TEXT);
2551
            }
2552
            if ($name !== null || $email !== null || $url !== null) {
2553
                $contributors[] = $this->registry->create(Author::class, [$name, $url, $email]);
2554
            }
2555
        }
2556
 
2557
        if (!empty($contributors)) {
2558
            return array_unique($contributors);
2559
        }
2560
 
2561
        return null;
2562
    }
2563
 
2564
    /**
2565
     * Get a single link for the feed
2566
     *
2567
     * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
2568
     * @param int $key The link that you want to return. Remember that arrays begin with 0, not 1
2569
     * @param string $rel The relationship of the link to return
2570
     * @return string|null Link URL
2571
     */
2572
    public function get_link($key = 0, $rel = 'alternate')
2573
    {
2574
        $links = $this->get_links($rel);
2575
        if (isset($links[$key])) {
2576
            return $links[$key];
2577
        }
2578
 
2579
        return null;
2580
    }
2581
 
2582
    /**
2583
     * Get the permalink for the item
2584
     *
2585
     * Returns the first link available with a relationship of "alternate".
2586
     * Identical to {@see get_link()} with key 0
2587
     *
2588
     * @see get_link
2589
     * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
2590
     * @internal Added for parity between the parent-level and the item/entry-level.
2591
     * @return string|null Link URL
2592
     */
2593
    public function get_permalink()
2594
    {
2595
        return $this->get_link(0);
2596
    }
2597
 
2598
    /**
2599
     * Get all links for the feed
2600
     *
2601
     * Uses `<atom:link>` or `<link>`
2602
     *
2603
     * @since Beta 2
2604
     * @param string $rel The relationship of links to return
2605
     * @return array|null Links found for the feed (strings)
2606
     */
2607
    public function get_links($rel = 'alternate')
2608
    {
2609
        if (!isset($this->data['links'])) {
2610
            $this->data['links'] = [];
2611
            if ($links = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'link')) {
2612
                foreach ($links as $link) {
2613
                    if (isset($link['attribs']['']['href'])) {
2614
                        $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
2615
                        $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], self::CONSTRUCT_IRI, $this->get_base($link));
2616
                    }
2617
                }
2618
            }
2619
            if ($links = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'link')) {
2620
                foreach ($links as $link) {
2621
                    if (isset($link['attribs']['']['href'])) {
2622
                        $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
2623
                        $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], self::CONSTRUCT_IRI, $this->get_base($link));
2624
                    }
2625
                }
2626
            }
2627
            if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'link')) {
2628
                $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0]));
2629
            }
2630
            if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'link')) {
2631
                $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0]));
2632
            }
2633
            if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'link')) {
2634
                $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0]));
2635
            }
2636
 
2637
            $keys = array_keys($this->data['links']);
2638
            foreach ($keys as $key) {
2639
                if ($this->registry->call(Misc::class, 'is_isegment_nz_nc', [$key])) {
2640
                    if (isset($this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key])) {
2641
                        $this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key]);
1441 ariadna 2642
                        $this->data['links'][$key] = &$this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key];
1 efrain 2643
                    } else {
1441 ariadna 2644
                        $this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key] = &$this->data['links'][$key];
1 efrain 2645
                    }
2646
                } elseif (substr($key, 0, 41) === self::IANA_LINK_RELATIONS_REGISTRY) {
1441 ariadna 2647
                    $this->data['links'][substr($key, 41)] = &$this->data['links'][$key];
1 efrain 2648
                }
2649
                $this->data['links'][$key] = array_unique($this->data['links'][$key]);
2650
            }
2651
        }
2652
 
2653
        if (isset($this->data['headers']['link'])) {
2654
            $link_headers = $this->data['headers']['link'];
2655
            if (is_array($link_headers)) {
2656
                $link_headers = implode(',', $link_headers);
2657
            }
2658
            // https://datatracker.ietf.org/doc/html/rfc8288
2659
            if (is_string($link_headers) &&
2660
                preg_match_all('/<(?P<uri>[^>]+)>\s*;\s*rel\s*=\s*(?P<quote>"?)' . preg_quote($rel) . '(?P=quote)\s*(?=,|$)/i', $link_headers, $matches)) {
2661
                return $matches['uri'];
2662
            }
2663
        }
2664
 
2665
        if (isset($this->data['links'][$rel])) {
2666
            return $this->data['links'][$rel];
2667
        }
2668
 
2669
        return null;
2670
    }
2671
 
2672
    public function get_all_discovered_feeds()
2673
    {
2674
        return $this->all_discovered_feeds;
2675
    }
2676
 
2677
    /**
2678
     * Get the content for the item
2679
     *
2680
     * Uses `<atom:subtitle>`, `<atom:tagline>`, `<description>`,
2681
     * `<dc:description>`, `<itunes:summary>` or `<itunes:subtitle>`
2682
     *
2683
     * @since 1.0 (previously called `get_feed_description()` since 0.8)
2684
     * @return string|null
2685
     */
2686
    public function get_description()
2687
    {
2688
        if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'subtitle')) {
2689
            return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
2690
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'tagline')) {
2691
            return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
2692
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'description')) {
2693
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
2694
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'description')) {
2695
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
2696
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'description')) {
2697
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0]));
2698
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'description')) {
2699
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2700
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'description')) {
2701
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2702
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'summary')) {
2703
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0]));
2704
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'subtitle')) {
2705
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0]));
2706
        }
2707
 
2708
        return null;
2709
    }
2710
 
2711
    /**
2712
     * Get the copyright info for the feed
2713
     *
2714
     * Uses `<atom:rights>`, `<atom:copyright>` or `<dc:rights>`
2715
     *
2716
     * @since 1.0 (previously called `get_feed_copyright()` since 0.8)
2717
     * @return string|null
2718
     */
2719
    public function get_copyright()
2720
    {
2721
        if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'rights')) {
2722
            return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
2723
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'copyright')) {
2724
            return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
2725
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'copyright')) {
2726
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2727
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'rights')) {
2728
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2729
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'rights')) {
2730
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2731
        }
2732
 
2733
        return null;
2734
    }
2735
 
2736
    /**
2737
     * Get the language for the feed
2738
     *
2739
     * Uses `<language>`, `<dc:language>`, or @xml_lang
2740
     *
2741
     * @since 1.0 (previously called `get_feed_language()` since 0.8)
2742
     * @return string|null
2743
     */
2744
    public function get_language()
2745
    {
2746
        if ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'language')) {
2747
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2748
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'language')) {
2749
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2750
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'language')) {
2751
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2752
        } elseif (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['xml_lang'])) {
2753
            return $this->sanitize($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['xml_lang'], self::CONSTRUCT_TEXT);
2754
        } elseif (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['xml_lang'])) {
2755
            return $this->sanitize($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['xml_lang'], self::CONSTRUCT_TEXT);
2756
        } elseif (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['xml_lang'])) {
2757
            return $this->sanitize($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['xml_lang'], self::CONSTRUCT_TEXT);
2758
        } elseif (isset($this->data['headers']['content-language'])) {
2759
            return $this->sanitize($this->data['headers']['content-language'], self::CONSTRUCT_TEXT);
2760
        }
2761
 
2762
        return null;
2763
    }
2764
 
2765
    /**
2766
     * Get the latitude coordinates for the item
2767
     *
2768
     * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
2769
     *
2770
     * Uses `<geo:lat>` or `<georss:point>`
2771
     *
2772
     * @since 1.0
2773
     * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
2774
     * @link http://www.georss.org/ GeoRSS
2775
     * @return string|null
2776
     */
2777
    public function get_latitude()
2778
    {
2779
        if ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'lat')) {
2780
            return (float) $return[0]['data'];
2781
        } elseif (($return = $this->get_channel_tags(self::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
2782
            return (float) $match[1];
2783
        }
2784
 
2785
        return null;
2786
    }
2787
 
2788
    /**
2789
     * Get the longitude coordinates for the feed
2790
     *
2791
     * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
2792
     *
2793
     * Uses `<geo:long>`, `<geo:lon>` or `<georss:point>`
2794
     *
2795
     * @since 1.0
2796
     * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
2797
     * @link http://www.georss.org/ GeoRSS
2798
     * @return string|null
2799
     */
2800
    public function get_longitude()
2801
    {
2802
        if ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'long')) {
2803
            return (float) $return[0]['data'];
2804
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'lon')) {
2805
            return (float) $return[0]['data'];
2806
        } elseif (($return = $this->get_channel_tags(self::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
2807
            return (float) $match[2];
2808
        }
2809
 
2810
        return null;
2811
    }
2812
 
2813
    /**
2814
     * Get the feed logo's title
2815
     *
2816
     * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" title.
2817
     *
2818
     * Uses `<image><title>` or `<image><dc:title>`
2819
     *
2820
     * @return string|null
2821
     */
2822
    public function get_image_title()
2823
    {
2824
        if ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'title')) {
2825
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2826
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'title')) {
2827
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2828
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'title')) {
2829
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2830
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_DC_11, 'title')) {
2831
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2832
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_DC_10, 'title')) {
2833
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
2834
        }
2835
 
2836
        return null;
2837
    }
2838
 
2839
    /**
2840
     * Get the feed logo's URL
2841
     *
2842
     * RSS 0.9.0, 2.0, Atom 1.0, and feeds with iTunes RSS tags are allowed to
2843
     * have a "feed logo" URL. This points directly to the image itself.
2844
     *
2845
     * Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`,
2846
     * `<image><title>` or `<image><dc:title>`
2847
     *
2848
     * @return string|null
2849
     */
2850
    public function get_image_url()
2851
    {
2852
        if ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'image')) {
2853
            return $this->sanitize($return[0]['attribs']['']['href'], self::CONSTRUCT_IRI);
2854
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'logo')) {
2855
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2856
        } elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'icon')) {
2857
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2858
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'url')) {
2859
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2860
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'url')) {
2861
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2862
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) {
2863
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2864
        }
2865
 
2866
        return null;
2867
    }
2868
 
2869
 
2870
    /**
2871
     * Get the feed logo's link
2872
     *
2873
     * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" link. This
2874
     * points to a human-readable page that the image should link to.
2875
     *
2876
     * Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`,
2877
     * `<image><title>` or `<image><dc:title>`
2878
     *
2879
     * @return string|null
2880
     */
2881
    public function get_image_link()
2882
    {
2883
        if ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'link')) {
2884
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2885
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'link')) {
2886
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2887
        } elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'link')) {
2888
            return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
2889
        }
2890
 
2891
        return null;
2892
    }
2893
 
2894
    /**
2895
     * Get the feed logo's link
2896
     *
2897
     * RSS 2.0 feeds are allowed to have a "feed logo" width.
2898
     *
2899
     * Uses `<image><width>` or defaults to 88 if no width is specified and
2900
     * the feed is an RSS 2.0 feed.
2901
     *
2902
     * @return int|null
2903
     */
2904
    public function get_image_width()
2905
    {
2906
        if ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'width')) {
2907
            return intval($return[0]['data']);
2908
        } elseif ($this->get_type() & self::TYPE_RSS_SYNDICATION && $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) {
2909
            return 88;
2910
        }
2911
 
2912
        return null;
2913
    }
2914
 
2915
    /**
2916
     * Get the feed logo's height
2917
     *
2918
     * RSS 2.0 feeds are allowed to have a "feed logo" height.
2919
     *
2920
     * Uses `<image><height>` or defaults to 31 if no height is specified and
2921
     * the feed is an RSS 2.0 feed.
2922
     *
2923
     * @return int|null
2924
     */
2925
    public function get_image_height()
2926
    {
2927
        if ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'height')) {
2928
            return intval($return[0]['data']);
2929
        } elseif ($this->get_type() & self::TYPE_RSS_SYNDICATION && $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) {
2930
            return 31;
2931
        }
2932
 
2933
        return null;
2934
    }
2935
 
2936
    /**
2937
     * Get the number of items in the feed
2938
     *
2939
     * This is well-suited for {@link http://php.net/for for()} loops with
2940
     * {@see get_item()}
2941
     *
2942
     * @param int $max Maximum value to return. 0 for no limit
2943
     * @return int Number of items in the feed
2944
     */
2945
    public function get_item_quantity($max = 0)
2946
    {
2947
        $max = (int) $max;
2948
        $qty = count($this->get_items());
2949
        if ($max === 0) {
2950
            return $qty;
2951
        }
2952
 
2953
        return ($qty > $max) ? $max : $qty;
2954
    }
2955
 
2956
    /**
2957
     * Get a single item from the feed
2958
     *
2959
     * This is better suited for {@link http://php.net/for for()} loops, whereas
2960
     * {@see get_items()} is better suited for
2961
     * {@link http://php.net/foreach foreach()} loops.
2962
     *
2963
     * @see get_item_quantity()
2964
     * @since Beta 2
2965
     * @param int $key The item that you want to return. Remember that arrays begin with 0, not 1
2966
     * @return \SimplePie\Item|null
2967
     */
2968
    public function get_item($key = 0)
2969
    {
2970
        $items = $this->get_items();
2971
        if (isset($items[$key])) {
2972
            return $items[$key];
2973
        }
2974
 
2975
        return null;
2976
    }
2977
 
2978
    /**
2979
     * Get all items from the feed
2980
     *
2981
     * This is better suited for {@link http://php.net/for for()} loops, whereas
2982
     * {@see get_items()} is better suited for
2983
     * {@link http://php.net/foreach foreach()} loops.
2984
     *
2985
     * @see get_item_quantity
2986
     * @since Beta 2
2987
     * @param int $start Index to start at
2988
     * @param int $end Number of items to return. 0 for all items after `$start`
2989
     * @return \SimplePie\Item[]|null List of {@see \SimplePie\Item} objects
2990
     */
2991
    public function get_items($start = 0, $end = 0)
2992
    {
2993
        if (!isset($this->data['items'])) {
2994
            if (!empty($this->multifeed_objects)) {
2995
                $this->data['items'] = SimplePie::merge_items($this->multifeed_objects, $start, $end, $this->item_limit);
2996
                if (empty($this->data['items'])) {
2997
                    return [];
2998
                }
2999
                return $this->data['items'];
3000
            }
3001
            $this->data['items'] = [];
3002
            if ($items = $this->get_feed_tags(self::NAMESPACE_ATOM_10, 'entry')) {
3003
                $keys = array_keys($items);
3004
                foreach ($keys as $key) {
3005
                    $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
3006
                }
3007
            }
3008
            if ($items = $this->get_feed_tags(self::NAMESPACE_ATOM_03, 'entry')) {
3009
                $keys = array_keys($items);
3010
                foreach ($keys as $key) {
3011
                    $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
3012
                }
3013
            }
3014
            if ($items = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'item')) {
3015
                $keys = array_keys($items);
3016
                foreach ($keys as $key) {
3017
                    $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
3018
                }
3019
            }
3020
            if ($items = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'item')) {
3021
                $keys = array_keys($items);
3022
                foreach ($keys as $key) {
3023
                    $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
3024
                }
3025
            }
3026
            if ($items = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'item')) {
3027
                $keys = array_keys($items);
3028
                foreach ($keys as $key) {
3029
                    $this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
3030
                }
3031
            }
3032
        }
3033
 
3034
        if (empty($this->data['items'])) {
3035
            return [];
3036
        }
3037
 
3038
        if ($this->order_by_date) {
3039
            if (!isset($this->data['ordered_items'])) {
3040
                $this->data['ordered_items'] = $this->data['items'];
3041
                usort($this->data['ordered_items'], [get_class($this), 'sort_items']);
3042
            }
3043
            $items = $this->data['ordered_items'];
3044
        } else {
3045
            $items = $this->data['items'];
3046
        }
3047
        // Slice the data as desired
3048
        if ($end === 0) {
3049
            return array_slice($items, $start);
3050
        }
3051
 
3052
        return array_slice($items, $start, $end);
3053
    }
3054
 
3055
    /**
3056
     * Set the favicon handler
3057
     *
3058
     * @deprecated Use your own favicon handling instead
3059
     */
3060
    public function set_favicon_handler($page = false, $qs = 'i')
3061
    {
3062
        trigger_error('Favicon handling has been removed, please use your own handling', \E_USER_DEPRECATED);
3063
        return false;
3064
    }
3065
 
3066
    /**
3067
     * Get the favicon for the current feed
3068
     *
3069
     * @deprecated Use your own favicon handling instead
3070
     */
3071
    public function get_favicon()
3072
    {
3073
        trigger_error('Favicon handling has been removed, please use your own handling', \E_USER_DEPRECATED);
3074
 
3075
        if (($url = $this->get_link()) !== null) {
3076
            return 'https://www.google.com/s2/favicons?domain=' . urlencode($url);
3077
        }
3078
 
3079
        return false;
3080
    }
3081
 
3082
    /**
3083
     * Magic method handler
3084
     *
3085
     * @param string $method Method name
3086
     * @param array $args Arguments to the method
3087
     * @return mixed
3088
     */
3089
    public function __call($method, $args)
3090
    {
3091
        if (strpos($method, 'subscribe_') === 0) {
3092
            trigger_error('subscribe_*() has been deprecated, implement the callback yourself', \E_USER_DEPRECATED);
3093
            return '';
3094
        }
3095
        if ($method === 'enable_xml_dump') {
3096
            trigger_error('enable_xml_dump() has been deprecated, use get_raw_data() instead', \E_USER_DEPRECATED);
3097
            return false;
3098
        }
3099
 
3100
        $class = get_class($this);
3101
        $trace = debug_backtrace();
3102
        $file = $trace[0]['file'];
3103
        $line = $trace[0]['line'];
1441 ariadna 3104
        throw new SimplePieException("Call to undefined method $class::$method() in $file on line $line");
1 efrain 3105
    }
3106
 
3107
    /**
3108
     * Sorting callback for items
3109
     *
3110
     * @access private
3111
     * @param SimplePie $a
3112
     * @param SimplePie $b
3113
     * @return boolean
3114
     */
3115
    public static function sort_items($a, $b)
3116
    {
3117
        $a_date = $a->get_date('U');
3118
        $b_date = $b->get_date('U');
3119
        if ($a_date && $b_date) {
3120
            return $a_date > $b_date ? -1 : 1;
3121
        }
3122
        // Sort items without dates to the top.
3123
        if ($a_date) {
3124
            return 1;
3125
        }
3126
        if ($b_date) {
3127
            return -1;
3128
        }
3129
        return 0;
3130
    }
3131
 
3132
    /**
3133
     * Merge items from several feeds into one
3134
     *
3135
     * If you're merging multiple feeds together, they need to all have dates
3136
     * for the items or else SimplePie will refuse to sort them.
3137
     *
3138
     * @link http://simplepie.org/wiki/tutorial/sort_multiple_feeds_by_time_and_date#if_feeds_require_separate_per-feed_settings
3139
     * @param array $urls List of SimplePie feed objects to merge
3140
     * @param int $start Starting item
3141
     * @param int $end Number of items to return
3142
     * @param int $limit Maximum number of items per feed
3143
     * @return array
3144
     */
3145
    public static function merge_items($urls, $start = 0, $end = 0, $limit = 0)
3146
    {
3147
        if (is_array($urls) && sizeof($urls) > 0) {
3148
            $items = [];
3149
            foreach ($urls as $arg) {
3150
                if ($arg instanceof SimplePie) {
3151
                    $items = array_merge($items, $arg->get_items(0, $limit));
3152
                } else {
3153
                    trigger_error('Arguments must be SimplePie objects', E_USER_WARNING);
3154
                }
3155
            }
3156
 
3157
            usort($items, [get_class($urls[0]), 'sort_items']);
3158
 
3159
            if ($end === 0) {
3160
                return array_slice($items, $start);
3161
            }
3162
 
3163
            return array_slice($items, $start, $end);
3164
        }
3165
 
3166
        trigger_error('Cannot merge zero SimplePie objects', E_USER_WARNING);
3167
        return [];
3168
    }
3169
 
3170
    /**
3171
     * Store PubSubHubbub links as headers
3172
     *
3173
     * There is no way to find PuSH links in the body of a microformats feed,
3174
     * so they are added to the headers when found, to be used later by get_links.
3175
     * @param \SimplePie\File $file
3176
     * @param string $hub
3177
     * @param string $self
3178
     */
3179
    private function store_links(&$file, $hub, $self)
3180
    {
3181
        if (isset($file->headers['link']['hub']) ||
3182
              (isset($file->headers['link']) &&
3183
               preg_match('/rel=hub/', $file->headers['link']))) {
3184
            return;
3185
        }
3186
 
3187
        if ($hub) {
3188
            if (isset($file->headers['link'])) {
3189
                if ($file->headers['link'] !== '') {
3190
                    $file->headers['link'] = ', ';
3191
                }
3192
            } else {
3193
                $file->headers['link'] = '';
3194
            }
3195
            $file->headers['link'] .= '<'.$hub.'>; rel=hub';
3196
            if ($self) {
3197
                $file->headers['link'] .= ', <'.$self.'>; rel=self';
3198
            }
3199
        }
3200
    }
3201
 
3202
    /**
3203
     * Get a DataCache
3204
     *
3205
     * @param string $feed_url Only needed for BC, can be removed in SimplePie 2.0.0
3206
     *
3207
     * @return DataCache
3208
     */
3209
    private function get_cache($feed_url = '')
3210
    {
3211
        if ($this->cache === null) {
3212
            // @trigger_error(sprintf('Not providing as PSR-16 cache implementation is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache()".'), \E_USER_DEPRECATED);
3213
            $cache = $this->registry->call(Cache::class, 'get_handler', [
3214
                $this->cache_location,
3215
                $this->get_cache_filename($feed_url),
3216
                Base::TYPE_FEED
3217
            ]);
3218
 
3219
            return new BaseDataCache($cache);
3220
        }
3221
 
3222
        return $this->cache;
3223
    }
3224
}
3225
 
3226
class_alias('SimplePie\SimplePie', 'SimplePie');