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ec397236 NL |
1 | <?php |
2 | /** | |
3 | * Content Extractor | |
4 | * | |
5 | * Uses patterns specified in site config files and auto detection (hNews/PHP Readability) | |
6 | * to extract content from HTML files. | |
7 | * | |
8 | * @version 0.8 | |
9 | * @date 2012-02-21 | |
10 | * @author Keyvan Minoukadeh | |
11 | * @copyright 2011 Keyvan Minoukadeh | |
12 | * @license http://www.gnu.org/licenses/agpl-3.0.html AGPL v3 | |
13 | */ | |
14 | ||
15 | class ContentExtractor | |
16 | { | |
17 | protected static $tidy_config = array( | |
18 | 'clean' => true, | |
19 | 'output-xhtml' => true, | |
20 | 'logical-emphasis' => true, | |
21 | 'show-body-only' => false, | |
22 | 'new-blocklevel-tags' => 'article, aside, footer, header, hgroup, menu, nav, section, details, datagrid', | |
23 | 'new-inline-tags' => 'mark, time, meter, progress, data', | |
24 | 'wrap' => 0, | |
25 | 'drop-empty-paras' => true, | |
26 | 'drop-proprietary-attributes' => false, | |
27 | 'enclose-text' => true, | |
28 | 'enclose-block-text' => true, | |
29 | 'merge-divs' => true, | |
30 | 'merge-spans' => true, | |
31 | 'char-encoding' => 'utf8', | |
32 | 'hide-comments' => true | |
33 | ); | |
34 | protected $html; | |
35 | protected $config; | |
36 | protected $title; | |
37 | protected $author = array(); | |
38 | protected $language; | |
39 | protected $date; | |
40 | protected $body; | |
41 | protected $success = false; | |
42 | public $fingerprints = array(); | |
43 | public $readability; | |
44 | public $debug = false; | |
45 | ||
46 | function __construct($path, $fallback=null) { | |
47 | SiteConfig::set_config_path($path, $fallback); | |
48 | } | |
49 | ||
50 | protected function debug($msg) { | |
51 | if ($this->debug) { | |
52 | $mem = round(memory_get_usage()/1024, 2); | |
53 | $memPeak = round(memory_get_peak_usage()/1024, 2); | |
54 | echo '* ',$msg; | |
55 | echo ' - mem used: ',$mem," (peak: $memPeak)\n"; | |
56 | ob_flush(); | |
57 | flush(); | |
58 | } | |
59 | } | |
60 | ||
61 | public function reset() { | |
62 | $this->html = null; | |
63 | $this->readability = null; | |
64 | $this->config = null; | |
65 | $this->title = null; | |
66 | $this->body = null; | |
67 | $this->author = array(); | |
68 | $this->language = null; | |
69 | $this->date = null; | |
70 | $this->success = false; | |
71 | } | |
72 | ||
73 | public function findHostUsingFingerprints($html) { | |
74 | $this->debug('Checking fingerprints...'); | |
75 | $head = substr($html, 0, 8000); | |
76 | foreach ($this->fingerprints as $_fp => $_fphost) { | |
77 | $lookin = 'html'; | |
78 | if (is_array($_fphost)) { | |
79 | if (isset($_fphost['head']) && $_fphost['head']) { | |
80 | $lookin = 'head'; | |
81 | } | |
82 | $_fphost = $_fphost['hostname']; | |
83 | } | |
84 | if (strpos($$lookin, $_fp) !== false) { | |
85 | $this->debug("Found match: $_fphost"); | |
86 | return $_fphost; | |
87 | } | |
88 | } | |
89 | return false; | |
90 | } | |
91 | ||
92 | // returns true on success, false on failure | |
93 | // $smart_tidy indicates that if tidy is used and no results are produced, we will | |
94 | // try again without it. Tidy helps us deal with PHP's patchy HTML parsing most of the time | |
95 | // but it has problems of its own which we try to avoid with this option. | |
96 | public function process($html, $url, $smart_tidy=true) { | |
97 | $this->reset(); | |
98 | // extract host name | |
99 | $host = @parse_url($url, PHP_URL_HOST); | |
100 | if (!($this->config = SiteConfig::build($host))) { | |
101 | // no match, check HTML for fingerprints | |
102 | if (!empty($this->fingerprints) && ($_fphost = $this->findHostUsingFingerprints($html))) { | |
103 | $this->config = SiteConfig::build($_fphost); | |
104 | } | |
105 | unset($_fphost); | |
106 | if (!$this->config) { | |
107 | // no match, so use defaults | |
108 | $this->config = new SiteConfig(); | |
109 | } | |
110 | } | |
111 | // store copy of config in our static cache array in case we need to process another URL | |
112 | SiteConfig::add_to_cache($host, $this->config); | |
113 | ||
114 | // do string replacements | |
115 | foreach ($this->config->replace_string as $_repl) { | |
116 | $html = str_replace($_repl[0], $_repl[1], $html); | |
117 | } | |
118 | unset($_repl); | |
119 | ||
120 | // use tidy (if it exists)? | |
121 | // This fixes problems with some sites which would otherwise | |
122 | // trouble DOMDocument's HTML parsing. (Although sometimes it | |
123 | // makes matters worse, which is why you can override it in site config files.) | |
124 | $tidied = false; | |
125 | if ($this->config->tidy && function_exists('tidy_parse_string') && $smart_tidy) { | |
126 | $this->debug('Using Tidy'); | |
127 | $tidy = tidy_parse_string($html, self::$tidy_config, 'UTF8'); | |
128 | if (tidy_clean_repair($tidy)) { | |
129 | $original_html = $html; | |
130 | $tidied = true; | |
131 | // $html = $tidy->value; | |
132 | } | |
133 | $body = $tidy->body(); | |
134 | if (preg_replace('/\s+/', '', $body->value) !== "<body></body>") { | |
135 | $html = $tidy->value; | |
136 | } | |
137 | unset($tidy); | |
138 | } | |
139 | ||
140 | // load and parse html | |
1a08e7b6 | 141 | $this->readability = new PocheReadability($html, $url); |
ec397236 NL |
142 | |
143 | // we use xpath to find elements in the given HTML document | |
144 | // see http://en.wikipedia.org/wiki/XPath_1.0 | |
145 | $xpath = new DOMXPath($this->readability->dom); | |
146 | ||
147 | // try to get title | |
148 | foreach ($this->config->title as $pattern) { | |
149 | $elems = @$xpath->evaluate($pattern, $this->readability->dom); | |
150 | if (is_string($elems)) { | |
151 | $this->debug('Title expression evaluated as string'); | |
152 | $this->title = trim($elems); | |
153 | break; | |
154 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) { | |
155 | $this->debug('Title matched'); | |
156 | $this->title = $elems->item(0)->textContent; | |
157 | // remove title from document | |
158 | try { | |
159 | $elems->item(0)->parentNode->removeChild($elems->item(0)); | |
160 | } catch (DOMException $e) { | |
161 | // do nothing | |
162 | } | |
163 | break; | |
164 | } | |
165 | } | |
166 | ||
167 | // try to get author (if it hasn't already been set) | |
168 | if (empty($this->author)) { | |
169 | foreach ($this->config->author as $pattern) { | |
170 | $elems = @$xpath->evaluate($pattern, $this->readability->dom); | |
171 | if (is_string($elems)) { | |
172 | $this->debug('Author expression evaluated as string'); | |
173 | if (trim($elems) != '') { | |
174 | $this->author[] = trim($elems); | |
175 | break; | |
176 | } | |
177 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) { | |
178 | foreach ($elems as $elem) { | |
179 | if (!isset($elem->parentNode)) continue; | |
180 | $this->author[] = trim($elem->textContent); | |
181 | } | |
182 | if (!empty($this->author)) break; | |
183 | } | |
184 | } | |
185 | } | |
186 | ||
187 | // try to get language | |
188 | $_lang_xpath = array('//html[@lang]/@lang', '//meta[@name="DC.language"]/@content'); | |
189 | foreach ($_lang_xpath as $pattern) { | |
190 | $elems = @$xpath->evaluate($pattern, $this->readability->dom); | |
191 | if (is_string($elems)) { | |
192 | if (trim($elems) != '') { | |
193 | $this->language = trim($elems); | |
194 | break; | |
195 | } | |
196 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) { | |
197 | foreach ($elems as $elem) { | |
198 | if (!isset($elem->parentNode)) continue; | |
199 | $this->language = trim($elem->textContent); | |
200 | } | |
201 | if ($this->language) break; | |
202 | } | |
203 | } | |
204 | ||
205 | // try to get date | |
206 | foreach ($this->config->date as $pattern) { | |
207 | $elems = @$xpath->evaluate($pattern, $this->readability->dom); | |
208 | if (is_string($elems)) { | |
209 | $this->debug('Date expression evaluated as string'); | |
210 | $this->date = strtotime(trim($elems, "; \t\n\r\0\x0B")); | |
211 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) { | |
212 | $this->debug('Date matched'); | |
213 | $this->date = $elems->item(0)->textContent; | |
214 | $this->date = strtotime(trim($this->date, "; \t\n\r\0\x0B")); | |
215 | // remove date from document | |
216 | // $elems->item(0)->parentNode->removeChild($elems->item(0)); | |
217 | } | |
218 | if (!$this->date) { | |
219 | $this->date = null; | |
220 | } else { | |
221 | break; | |
222 | } | |
223 | } | |
224 | ||
225 | // strip elements (using xpath expressions) | |
226 | foreach ($this->config->strip as $pattern) { | |
227 | $elems = @$xpath->query($pattern, $this->readability->dom); | |
228 | // check for matches | |
229 | if ($elems && $elems->length > 0) { | |
230 | $this->debug('Stripping '.$elems->length.' elements (strip)'); | |
231 | for ($i=$elems->length-1; $i >= 0; $i--) { | |
232 | $elems->item($i)->parentNode->removeChild($elems->item($i)); | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
237 | // strip elements (using id and class attribute values) | |
238 | foreach ($this->config->strip_id_or_class as $string) { | |
239 | $string = strtr($string, array("'"=>'', '"'=>'')); | |
240 | $elems = @$xpath->query("//*[contains(@class, '$string') or contains(@id, '$string')]", $this->readability->dom); | |
241 | // check for matches | |
242 | if ($elems && $elems->length > 0) { | |
243 | $this->debug('Stripping '.$elems->length.' elements (strip_id_or_class)'); | |
244 | for ($i=$elems->length-1; $i >= 0; $i--) { | |
245 | $elems->item($i)->parentNode->removeChild($elems->item($i)); | |
246 | } | |
247 | } | |
248 | } | |
249 | ||
250 | // strip images (using src attribute values) | |
251 | foreach ($this->config->strip_image_src as $string) { | |
252 | $string = strtr($string, array("'"=>'', '"'=>'')); | |
253 | $elems = @$xpath->query("//img[contains(@src, '$string')]", $this->readability->dom); | |
254 | // check for matches | |
255 | if ($elems && $elems->length > 0) { | |
256 | $this->debug('Stripping '.$elems->length.' image elements'); | |
257 | for ($i=$elems->length-1; $i >= 0; $i--) { | |
258 | $elems->item($i)->parentNode->removeChild($elems->item($i)); | |
259 | } | |
260 | } | |
261 | } | |
262 | // strip elements using Readability.com and Instapaper.com ignore class names | |
263 | // .entry-unrelated and .instapaper_ignore | |
264 | // See https://www.readability.com/publishers/guidelines/#view-plainGuidelines | |
265 | // and http://blog.instapaper.com/post/730281947 | |
266 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' entry-unrelated ') or contains(concat(' ',normalize-space(@class),' '),' instapaper_ignore ')]", $this->readability->dom); | |
267 | // check for matches | |
268 | if ($elems && $elems->length > 0) { | |
269 | $this->debug('Stripping '.$elems->length.' .entry-unrelated,.instapaper_ignore elements'); | |
270 | for ($i=$elems->length-1; $i >= 0; $i--) { | |
271 | $elems->item($i)->parentNode->removeChild($elems->item($i)); | |
272 | } | |
273 | } | |
274 | ||
275 | // strip elements that contain style="display: none;" | |
276 | $elems = @$xpath->query("//*[contains(@style,'display:none')]", $this->readability->dom); | |
277 | // check for matches | |
278 | if ($elems && $elems->length > 0) { | |
279 | $this->debug('Stripping '.$elems->length.' elements with inline display:none style'); | |
280 | for ($i=$elems->length-1; $i >= 0; $i--) { | |
281 | $elems->item($i)->parentNode->removeChild($elems->item($i)); | |
282 | } | |
283 | } | |
284 | ||
285 | // try to get body | |
286 | foreach ($this->config->body as $pattern) { | |
287 | $elems = @$xpath->query($pattern, $this->readability->dom); | |
288 | // check for matches | |
289 | if ($elems && $elems->length > 0) { | |
290 | $this->debug('Body matched'); | |
291 | if ($elems->length == 1) { | |
292 | $this->body = $elems->item(0); | |
293 | // prune (clean up elements that may not be content) | |
294 | if ($this->config->prune) { | |
295 | $this->debug('Pruning content'); | |
296 | $this->readability->prepArticle($this->body); | |
297 | } | |
298 | break; | |
299 | } else { | |
300 | $this->body = $this->readability->dom->createElement('div'); | |
301 | $this->debug($elems->length.' body elems found'); | |
302 | foreach ($elems as $elem) { | |
303 | if (!isset($elem->parentNode)) continue; | |
304 | $isDescendant = false; | |
305 | foreach ($this->body->childNodes as $parent) { | |
306 | if ($this->isDescendant($parent, $elem)) { | |
307 | $isDescendant = true; | |
308 | break; | |
309 | } | |
310 | } | |
311 | if ($isDescendant) { | |
312 | $this->debug('Element is child of another body element, skipping.'); | |
313 | } else { | |
314 | // prune (clean up elements that may not be content) | |
315 | if ($this->config->prune) { | |
316 | $this->debug('Pruning content'); | |
317 | $this->readability->prepArticle($elem); | |
318 | } | |
319 | $this->debug('Element added to body'); | |
320 | $this->body->appendChild($elem); | |
321 | } | |
322 | } | |
323 | } | |
324 | } | |
325 | } | |
326 | ||
327 | // auto detect? | |
328 | $detect_title = $detect_body = $detect_author = $detect_date = false; | |
329 | // detect title? | |
330 | if (!isset($this->title)) { | |
331 | if (empty($this->config->title) || $this->config->autodetect_on_failure) { | |
332 | $detect_title = true; | |
333 | } | |
334 | } | |
335 | // detect body? | |
336 | if (!isset($this->body)) { | |
337 | if (empty($this->config->body) || $this->config->autodetect_on_failure) { | |
338 | $detect_body = true; | |
339 | } | |
340 | } | |
341 | // detect author? | |
342 | if (empty($this->author)) { | |
343 | if (empty($this->config->author) || $this->config->autodetect_on_failure) { | |
344 | $detect_author = true; | |
345 | } | |
346 | } | |
347 | // detect date? | |
348 | if (!isset($this->date)) { | |
349 | if (empty($this->config->date) || $this->config->autodetect_on_failure) { | |
350 | $detect_date = true; | |
351 | } | |
352 | } | |
353 | ||
354 | // check for hNews | |
355 | if ($detect_title || $detect_body) { | |
356 | // check for hentry | |
357 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' hentry ')]", $this->readability->dom); | |
358 | if ($elems && $elems->length > 0) { | |
359 | $this->debug('hNews: found hentry'); | |
360 | $hentry = $elems->item(0); | |
361 | ||
362 | if ($detect_title) { | |
363 | // check for entry-title | |
364 | $elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' entry-title ')]", $hentry); | |
365 | if ($elems && $elems->length > 0) { | |
366 | $this->debug('hNews: found entry-title'); | |
367 | $this->title = $elems->item(0)->textContent; | |
368 | // remove title from document | |
369 | $elems->item(0)->parentNode->removeChild($elems->item(0)); | |
370 | $detect_title = false; | |
371 | } | |
372 | } | |
373 | ||
374 | if ($detect_date) { | |
375 | // check for time element with pubdate attribute | |
376 | $elems = @$xpath->query(".//time[@pubdate] | .//abbr[contains(concat(' ',normalize-space(@class),' '),' published ')]", $hentry); | |
377 | if ($elems && $elems->length > 0) { | |
378 | $this->debug('hNews: found publication date'); | |
379 | $this->date = strtotime(trim($elems->item(0)->textContent)); | |
380 | // remove date from document | |
381 | //$elems->item(0)->parentNode->removeChild($elems->item(0)); | |
382 | if ($this->date) { | |
383 | $detect_date = false; | |
384 | } else { | |
385 | $this->date = null; | |
386 | } | |
387 | } | |
388 | } | |
389 | ||
390 | if ($detect_author) { | |
391 | // check for time element with pubdate attribute | |
392 | $elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' vcard ') and (contains(concat(' ',normalize-space(@class),' '),' author ') or contains(concat(' ',normalize-space(@class),' '),' byline '))]", $hentry); | |
393 | if ($elems && $elems->length > 0) { | |
394 | $this->debug('hNews: found author'); | |
395 | $author = $elems->item(0); | |
396 | $fn = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' fn ')]", $author); | |
397 | if ($fn && $fn->length > 0) { | |
398 | foreach ($fn as $_fn) { | |
399 | if (trim($_fn->textContent) != '') { | |
400 | $this->author[] = trim($_fn->textContent); | |
401 | } | |
402 | } | |
403 | } else { | |
404 | if (trim($author->textContent) != '') { | |
405 | $this->author[] = trim($author->textContent); | |
406 | } | |
407 | } | |
408 | $detect_author = empty($this->author); | |
409 | } | |
410 | } | |
411 | ||
412 | // check for entry-content. | |
413 | // according to hAtom spec, if there are multiple elements marked entry-content, | |
414 | // we include all of these in the order they appear - see http://microformats.org/wiki/hatom#Entry_Content | |
415 | if ($detect_body) { | |
416 | $elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' entry-content ')]", $hentry); | |
417 | if ($elems && $elems->length > 0) { | |
418 | $this->debug('hNews: found entry-content'); | |
419 | if ($elems->length == 1) { | |
420 | // what if it's empty? (some sites misuse hNews - place their content outside an empty entry-content element) | |
421 | $e = $elems->item(0); | |
422 | if (($e->tagName == 'img') || (trim($e->textContent) != '')) { | |
423 | $this->body = $elems->item(0); | |
424 | // prune (clean up elements that may not be content) | |
425 | if ($this->config->prune) { | |
426 | $this->debug('Pruning content'); | |
427 | $this->readability->prepArticle($this->body); | |
428 | } | |
429 | $detect_body = false; | |
430 | } else { | |
431 | $this->debug('hNews: skipping entry-content - appears not to contain content'); | |
432 | } | |
433 | unset($e); | |
434 | } else { | |
435 | $this->body = $this->readability->dom->createElement('div'); | |
436 | $this->debug($elems->length.' entry-content elems found'); | |
437 | foreach ($elems as $elem) { | |
438 | if (!isset($elem->parentNode)) continue; | |
439 | $isDescendant = false; | |
440 | foreach ($this->body->childNodes as $parent) { | |
441 | if ($this->isDescendant($parent, $elem)) { | |
442 | $isDescendant = true; | |
443 | break; | |
444 | } | |
445 | } | |
446 | if ($isDescendant) { | |
447 | $this->debug('Element is child of another body element, skipping.'); | |
448 | } else { | |
449 | // prune (clean up elements that may not be content) | |
450 | if ($this->config->prune) { | |
451 | $this->debug('Pruning content'); | |
452 | $this->readability->prepArticle($elem); | |
453 | } | |
454 | $this->debug('Element added to body'); | |
455 | $this->body->appendChild($elem); | |
456 | } | |
457 | } | |
458 | $detect_body = false; | |
459 | } | |
460 | } | |
461 | } | |
462 | } | |
463 | } | |
464 | ||
465 | // check for elements marked with instapaper_title | |
466 | if ($detect_title) { | |
467 | // check for instapaper_title | |
468 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' instapaper_title ')]", $this->readability->dom); | |
469 | if ($elems && $elems->length > 0) { | |
470 | $this->debug('title found (.instapaper_title)'); | |
471 | $this->title = $elems->item(0)->textContent; | |
472 | // remove title from document | |
473 | $elems->item(0)->parentNode->removeChild($elems->item(0)); | |
474 | $detect_title = false; | |
475 | } | |
476 | } | |
477 | // check for elements marked with instapaper_body | |
478 | if ($detect_body) { | |
479 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' instapaper_body ')]", $this->readability->dom); | |
480 | if ($elems && $elems->length > 0) { | |
481 | $this->debug('body found (.instapaper_body)'); | |
482 | $this->body = $elems->item(0); | |
483 | // prune (clean up elements that may not be content) | |
484 | if ($this->config->prune) { | |
485 | $this->debug('Pruning content'); | |
486 | $this->readability->prepArticle($this->body); | |
487 | } | |
488 | $detect_body = false; | |
489 | } | |
490 | } | |
491 | ||
492 | // Find author in rel="author" marked element | |
493 | // We only use this if there's exactly one. | |
494 | // If there's more than one, it could indicate more than | |
495 | // one author, but it could also indicate that we're processing | |
496 | // a page listing different articles with different authors. | |
497 | if ($detect_author) { | |
498 | $elems = @$xpath->query("//a[contains(concat(' ',normalize-space(@rel),' '),' author ')]", $this->readability->dom); | |
499 | if ($elems && $elems->length == 1) { | |
500 | $this->debug('Author found (rel="author")'); | |
501 | $author = trim($elems->item(0)->textContent); | |
502 | if ($author != '') { | |
503 | $this->author[] = $author; | |
504 | $detect_author = false; | |
505 | } | |
506 | } | |
507 | } | |
508 | ||
509 | // Find date in pubdate marked time element | |
510 | // For the same reason given above, we only use this | |
511 | // if there's exactly one element. | |
512 | if ($detect_date) { | |
513 | $elems = @$xpath->query("//time[@pubdate]", $this->readability->dom); | |
514 | if ($elems && $elems->length == 1) { | |
515 | $this->debug('Date found (pubdate marked time element)'); | |
516 | $this->date = strtotime(trim($elems->item(0)->textContent)); | |
517 | // remove date from document | |
518 | //$elems->item(0)->parentNode->removeChild($elems->item(0)); | |
519 | if ($this->date) { | |
520 | $detect_date = false; | |
521 | } else { | |
522 | $this->date = null; | |
523 | } | |
524 | } | |
525 | } | |
526 | ||
527 | // still missing title or body, so we detect using Readability | |
528 | if ($detect_title || $detect_body) { | |
529 | $this->debug('Using Readability'); | |
530 | // clone body if we're only using Readability for title (otherwise it may interfere with body element) | |
531 | if (isset($this->body)) $this->body = $this->body->cloneNode(true); | |
532 | $success = $this->readability->init(); | |
533 | } | |
534 | if ($detect_title) { | |
535 | $this->debug('Detecting title'); | |
536 | $this->title = $this->readability->getTitle()->textContent; | |
537 | } | |
538 | if ($detect_body && $success) { | |
539 | $this->debug('Detecting body'); | |
540 | $this->body = $this->readability->getContent(); | |
541 | if ($this->body->childNodes->length == 1 && $this->body->firstChild->nodeType === XML_ELEMENT_NODE) { | |
542 | $this->body = $this->body->firstChild; | |
543 | } | |
544 | // prune (clean up elements that may not be content) | |
545 | if ($this->config->prune) { | |
546 | $this->debug('Pruning content'); | |
547 | $this->readability->prepArticle($this->body); | |
548 | } | |
549 | } | |
550 | if (isset($this->body)) { | |
551 | // remove scripts | |
552 | $this->readability->removeScripts($this->body); | |
553 | // remove any h1-h6 elements that appear as first thing in the body | |
554 | // and which match our title | |
555 | if (isset($this->title) && ($this->title != '')) { | |
556 | $firstChild = $this->body->firstChild; | |
557 | while ($firstChild->nodeType && ($firstChild->nodeType !== XML_ELEMENT_NODE)) { | |
558 | $firstChild = $firstChild->nextSibling; | |
559 | } | |
560 | if (($firstChild->nodeType === XML_ELEMENT_NODE) | |
561 | && in_array(strtolower($firstChild->tagName), array('h1', 'h2', 'h3', 'h4', 'h5', 'h6')) | |
562 | && (strtolower(trim($firstChild->textContent)) == strtolower(trim($this->title)))) { | |
563 | $this->body->removeChild($firstChild); | |
564 | } | |
565 | } | |
566 | $this->success = true; | |
567 | } | |
568 | ||
569 | // if we've had no success and we've used tidy, there's a chance | |
570 | // that tidy has messed up. So let's try again without tidy... | |
571 | if (!$this->success && $tidied && $smart_tidy) { | |
572 | $this->debug('Trying again without tidy'); | |
573 | $this->process($original_html, $url, false); | |
574 | } | |
575 | ||
576 | return $this->success; | |
577 | } | |
578 | ||
579 | private function isDescendant(DOMElement $parent, DOMElement $child) { | |
580 | $node = $child->parentNode; | |
581 | while ($node != null) { | |
582 | if ($node->isSameNode($parent)) return true; | |
583 | $node = $node->parentNode; | |
584 | } | |
585 | return false; | |
586 | } | |
587 | ||
588 | public function getContent() { | |
589 | return $this->body; | |
590 | } | |
591 | ||
592 | public function getTitle() { | |
593 | return $this->title; | |
594 | } | |
595 | ||
596 | public function getAuthors() { | |
597 | return $this->author; | |
598 | } | |
599 | ||
600 | public function getLanguage() { | |
601 | return $this->language; | |
602 | } | |
603 | ||
604 | public function getDate() { | |
605 | return $this->date; | |
606 | } | |
607 | ||
608 | public function getSiteConfig() { | |
609 | return $this->config; | |
610 | } | |
611 | } | |
612 | ?> |