1<?php
2
3// SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue
4// SPDX-License-Identifier: BSD-3-Clause
5
6declare(strict_types=1);
7
8namespace SimplePie;
9
10/**
11 * Handles `<atom:source>`
12 *
13 * Used by {@see \SimplePie\Item::get_source()}
14 *
15 * This class can be overloaded with {@see \SimplePie::set_source_class()}
16 */
17class Source implements RegistryAware
18{
19 /** @var Item */
20 public $item;
21 /** @var array<string, mixed> */
22 public $data = [];
23 /** @var Registry */
24 protected $registry;
25
26 /**
27 * @param array<string, mixed> $data
28 */
29 public function __construct(Item $item, array $data)
30 {
31 $this->item = $item;
32 $this->data = $data;
33 }
34
35 /**
36 * @return void
37 */
38 public function set_registry(\SimplePie\Registry $registry)
39 {
40 $this->registry = $registry;
41 }
42
43 /**
44 * @return string
45 */
46 public function __toString()
47 {
48 return md5(serialize($this->data));
49 }
50
51 /**
52 * @param string $namespace
53 * @param string $tag
54 * @return array<array<string, mixed>>|null
55 */
56 public function get_source_tags(string $namespace, string $tag)
57 {
58 if (isset($this->data['child'][$namespace][$tag])) {
59 return $this->data['child'][$namespace][$tag];
60 }
61
62 return null;
63 }
64
65 /**
66 * @param array<string, mixed> $element
67 * @return string
68 */
69 public function get_base(array $element = [])
70 {
71 return $this->item->get_base($element);
72 }
73
74 /**
75 * @param string $data
76 * @param int-mask-of<SimplePie::CONSTRUCT_*> $type
77 * @param string $base
78 * @return string
79 */
80 public function sanitize(string $data, $type, string $base = '')
81 {
82 return $this->item->sanitize($data, $type, $base);
83 }
84
85 /**
86 * @return Item
87 */
88 public function get_item()
89 {
90 return $this->item;
91 }
92
93 /**
94 * @return string|null
95 */
96 public function get_title()
97 {
98 if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'title')) {
99 return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
100 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'title')) {
101 return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
102 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_10, 'title')) {
103 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
104 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_090, 'title')) {
105 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
106 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'title')) {
107 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
108 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'title')) {
109 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
110 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'title')) {
111 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
112 }
113
114 return null;
115 }
116
117 /**
118 * @param int $key
119 * @return Category|null
120 */
121 public function get_category(int $key = 0)
122 {
123 $categories = $this->get_categories();
124 if (isset($categories[$key])) {
125 return $categories[$key];
126 }
127
128 return null;
129 }
130
131 /**
132 * @return array<Category>|null
133 */
134 public function get_categories()
135 {
136 $categories = [];
137
138 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'category') as $category) {
139 $term = null;
140 $scheme = null;
141 $label = null;
142 if (isset($category['attribs']['']['term'])) {
143 $term = $this->sanitize($category['attribs']['']['term'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
144 }
145 if (isset($category['attribs']['']['scheme'])) {
146 $scheme = $this->sanitize($category['attribs']['']['scheme'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
147 }
148 if (isset($category['attribs']['']['label'])) {
149 $label = $this->sanitize($category['attribs']['']['label'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
150 }
151 $categories[] = $this->registry->create(Category::class, [$term, $scheme, $label]);
152 }
153 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'category') as $category) {
154 // This is really the label, but keep this as the term also for BC.
155 // Label will also work on retrieving because that falls back to term.
156 $term = $this->sanitize($category['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
157 if (isset($category['attribs']['']['domain'])) {
158 $scheme = $this->sanitize($category['attribs']['']['domain'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
159 } else {
160 $scheme = null;
161 }
162 $categories[] = $this->registry->create(Category::class, [$term, $scheme, null]);
163 }
164 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'subject') as $category) {
165 $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
166 }
167 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'subject') as $category) {
168 $categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
169 }
170
171 if (!empty($categories)) {
172 return array_unique($categories);
173 }
174
175 return null;
176 }
177
178 /**
179 * @param int $key
180 * @return Author|null
181 */
182 public function get_author(int $key = 0)
183 {
184 $authors = $this->get_authors();
185 if (isset($authors[$key])) {
186 return $authors[$key];
187 }
188
189 return null;
190 }
191
192 /**
193 * @return array<Author>|null
194 */
195 public function get_authors()
196 {
197 $authors = [];
198 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'author') as $author) {
199 $name = null;
200 $uri = null;
201 $email = null;
202 if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'])) {
203 $name = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
204 }
205 if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
206 $uri = $author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0];
207 $uri = $this->sanitize($uri['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($uri));
208 }
209 if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'])) {
210 $email = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
211 }
212 if ($name !== null || $email !== null || $uri !== null) {
213 $authors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
214 }
215 }
216 if ($author = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'author')) {
217 $name = null;
218 $url = null;
219 $email = null;
220 if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'])) {
221 $name = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
222 }
223 if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'])) {
224 $url = $author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0];
225 $url = $this->sanitize($url['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($url));
226 }
227 if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'])) {
228 $email = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
229 }
230 if ($name !== null || $email !== null || $url !== null) {
231 $authors[] = $this->registry->create(Author::class, [$name, $url, $email]);
232 }
233 }
234 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'creator') as $author) {
235 $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
236 }
237 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'creator') as $author) {
238 $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
239 }
240 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'author') as $author) {
241 $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);
242 }
243
244 if (!empty($authors)) {
245 return array_unique($authors);
246 }
247
248 return null;
249 }
250
251 /**
252 * @param int $key
253 * @return Author|null
254 */
255 public function get_contributor(int $key = 0)
256 {
257 $contributors = $this->get_contributors();
258 if (isset($contributors[$key])) {
259 return $contributors[$key];
260 }
261
262 return null;
263 }
264
265 /**
266 * @return array<Author>|null
267 */
268 public function get_contributors()
269 {
270 $contributors = [];
271 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'contributor') as $contributor) {
272 $name = null;
273 $uri = null;
274 $email = null;
275 if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'])) {
276 $name = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
277 }
278 if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
279 $uri = $contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0];
280 $uri = $this->sanitize($uri['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($uri));
281 }
282 if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'])) {
283 $email = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
284 }
285 if ($name !== null || $email !== null || $uri !== null) {
286 $contributors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
287 }
288 }
289 foreach ((array) $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'contributor') as $contributor) {
290 $name = null;
291 $url = null;
292 $email = null;
293 if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'])) {
294 $name = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
295 }
296 if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'])) {
297 $url = $contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0];
298 $url = $this->sanitize($url['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($url));
299 }
300 if (isset($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'])) {
301 $email = $this->sanitize($contributor['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
302 }
303 if ($name !== null || $email !== null || $url !== null) {
304 $contributors[] = $this->registry->create(Author::class, [$name, $url, $email]);
305 }
306 }
307
308 if (!empty($contributors)) {
309 return array_unique($contributors);
310 }
311
312 return null;
313 }
314
315 /**
316 * @param int $key
317 * @param string $rel
318 * @return string|null
319 */
320 public function get_link(int $key = 0, string $rel = 'alternate')
321 {
322 $links = $this->get_links($rel);
323 if (isset($links[$key])) {
324 return $links[$key];
325 }
326
327 return null;
328 }
329
330 /**
331 * Added for parity between the parent-level and the item/entry-level.
332 *
333 * @return string|null
334 */
335 public function get_permalink()
336 {
337 return $this->get_link(0);
338 }
339
340 /**
341 * @param string $rel
342 * @return array<string>|null
343 */
344 public function get_links(string $rel = 'alternate')
345 {
346 if (!isset($this->data['links'])) {
347 $this->data['links'] = [];
348 if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'link')) {
349 foreach ($links as $link) {
350 if (isset($link['attribs']['']['href'])) {
351 $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
352 $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($link));
353 }
354 }
355 }
356 if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'link')) {
357 foreach ($links as $link) {
358 if (isset($link['attribs']['']['href'])) {
359 $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
360 $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($link));
361 }
362 }
363 }
364 if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_10, 'link')) {
365 $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($links[0]));
366 }
367 if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_090, 'link')) {
368 $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($links[0]));
369 }
370 if ($links = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'link')) {
371 $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($links[0]));
372 }
373
374 $keys = array_keys($this->data['links']);
375 foreach ($keys as $key) {
376 $key = (string) $key;
377
378 if ($this->registry->call(Misc::class, 'is_isegment_nz_nc', [$key])) {
379 if (isset($this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key])) {
380 $this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key]);
381 $this->data['links'][$key] = &$this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key];
382 } else {
383 $this->data['links'][\SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY . $key] = &$this->data['links'][$key];
384 }
385 } elseif (substr($key, 0, 41) === \SimplePie\SimplePie::IANA_LINK_RELATIONS_REGISTRY) {
386 $this->data['links'][substr($key, 41)] = &$this->data['links'][$key];
387 }
388 $this->data['links'][$key] = array_unique($this->data['links'][$key]);
389 }
390 }
391
392 if (isset($this->data['links'][$rel])) {
393 return $this->data['links'][$rel];
394 }
395
396 return null;
397 }
398
399 /**
400 * @return string|null
401 */
402 public function get_description()
403 {
404 if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'subtitle')) {
405 return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
406 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'tagline')) {
407 return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
408 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_10, 'description')) {
409 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
410 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_090, 'description')) {
411 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
412 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'description')) {
413 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
414 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'description')) {
415 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
416 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'description')) {
417 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
418 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'summary')) {
419 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_HTML, $this->get_base($return[0]));
420 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'subtitle')) {
421 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_HTML, $this->get_base($return[0]));
422 }
423
424 return null;
425 }
426
427 /**
428 * @return string|null
429 */
430 public function get_copyright()
431 {
432 if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'rights')) {
433 return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
434 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'copyright')) {
435 return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
436 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'copyright')) {
437 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
438 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'rights')) {
439 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
440 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'rights')) {
441 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
442 }
443
444 return null;
445 }
446
447 /**
448 * @return string|null
449 */
450 public function get_language()
451 {
452 if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'language')) {
453 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
454 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'language')) {
455 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
456 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'language')) {
457 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
458 } elseif (isset($this->data['xml_lang'])) {
459 return $this->sanitize($this->data['xml_lang'], \SimplePie\SimplePie::CONSTRUCT_TEXT);
460 }
461
462 return null;
463 }
464
465 /**
466 * @return float|null
467 */
468 public function get_latitude()
469 {
470 if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_W3C_BASIC_GEO, 'lat')) {
471 return (float) $return[0]['data'];
472 } elseif (($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
473 return (float) $match[1];
474 }
475
476 return null;
477 }
478
479 /**
480 * @return float|null
481 */
482 public function get_longitude()
483 {
484 if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_W3C_BASIC_GEO, 'long')) {
485 return (float) $return[0]['data'];
486 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_W3C_BASIC_GEO, 'lon')) {
487 return (float) $return[0]['data'];
488 } elseif (($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
489 return (float) $match[2];
490 }
491
492 return null;
493 }
494
495 /**
496 * @return string|null
497 */
498 public function get_image_url()
499 {
500 if ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'image')) {
501 return $this->sanitize($return[0]['attribs']['']['href'], \SimplePie\SimplePie::CONSTRUCT_IRI);
502 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'logo')) {
503 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($return[0]));
504 } elseif ($return = $this->get_source_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'icon')) {
505 return $this->sanitize($return[0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($return[0]));
506 }
507
508 return null;
509 }
510}
511
512class_alias('SimplePie\Source', 'SimplePie_Source');
513