projects / github / wallabag / wallabag.git / blame
| Commit | Line | Data |
|---|---|---|
| 42c80841 NL |
1 | <?php\r |
| 2 | /**\r | |
| 3 | * Content Extractor\r | |
| 4 | * \r | |
| 5 | * Uses patterns specified in site config files and auto detection (hNews/PHP Readability) \r | |
| 6 | * to extract content from HTML files.\r | |
| 7 | * \r | |
| 8 | * @version 1.0\r | |
| 9 | * @date 2013-02-05\r | |
| 10 | * @author Keyvan Minoukadeh\r | |
| 11 | * @copyright 2013 Keyvan Minoukadeh\r | |
| 12 | * @license http://www.gnu.org/licenses/agpl-3.0.html AGPL v3\r | |
| 13 | */\r | |
| 14 | \r | |
| 15 | class ContentExtractor\r | |
| 16 | {\r | |
| 17 | protected static $tidy_config = array(\r | |
| 18 | 'clean' => true,\r | |
| 19 | 'output-xhtml' => true,\r | |
| 20 | 'logical-emphasis' => true,\r | |
| 21 | 'show-body-only' => false,\r | |
| 22 | 'new-blocklevel-tags' => 'article, aside, footer, header, hgroup, menu, nav, section, details, datagrid',\r | |
| 23 | 'new-inline-tags' => 'mark, time, meter, progress, data',\r | |
| 24 | 'wrap' => 0,\r | |
| 25 | 'drop-empty-paras' => true,\r | |
| 26 | 'drop-proprietary-attributes' => false,\r | |
| 27 | 'enclose-text' => true,\r | |
| 28 | 'enclose-block-text' => true,\r | |
| 29 | 'merge-divs' => true,\r | |
| 30 | 'merge-spans' => true,\r | |
| 31 | 'char-encoding' => 'utf8',\r | |
| 32 | 'hide-comments' => true\r | |
| 33 | );\r | |
| 34 | protected $html;\r | |
| 35 | protected $config;\r | |
| 36 | protected $title;\r | |
| 37 | protected $author = array();\r | |
| 38 | protected $language;\r | |
| 39 | protected $date;\r | |
| 40 | protected $body;\r | |
| 41 | protected $success = false;\r | |
| 42 | protected $nextPageUrl;\r | |
| 43 | public $allowedParsers = array('libxml', 'html5lib');\r | |
| 44 | public $fingerprints = array();\r | |
| 45 | public $readability;\r | |
| 46 | public $debug = false;\r | |
| 47 | public $debugVerbose = false;\r | |
| 48 | \r | |
| 49 | function __construct($path, $fallback=null) {\r | |
| 50 | SiteConfig::set_config_path($path, $fallback); \r | |
| 51 | }\r | |
| 52 | \r | |
| 53 | protected function debug($msg) {\r | |
| 54 | if ($this->debug) {\r | |
| 55 | $mem = round(memory_get_usage()/1024, 2);\r | |
| 56 | $memPeak = round(memory_get_peak_usage()/1024, 2);\r | |
| 57 | echo '* ',$msg;\r | |
| 58 | if ($this->debugVerbose) echo ' - mem used: ',$mem," (peak: $memPeak)";\r | |
| 59 | echo "\n";\r | |
| 60 | ob_flush();\r | |
| 61 | flush();\r | |
| 62 | }\r | |
| 63 | }\r | |
| 64 | \r | |
| 65 | public function reset() {\r | |
| 66 | $this->html = null;\r | |
| 67 | $this->readability = null;\r | |
| 68 | $this->config = null;\r | |
| 69 | $this->title = null;\r | |
| 70 | $this->body = null;\r | |
| 71 | $this->author = array();\r | |
| 72 | $this->language = null;\r | |
| 73 | $this->date = null;\r | |
| 74 | $this->nextPageUrl = null;\r | |
| 75 | $this->success = false;\r | |
| 76 | }\r | |
| 77 | \r | |
| 78 | public function findHostUsingFingerprints($html) {\r | |
| 79 | $this->debug('Checking fingerprints...');\r | |
| 80 | $head = substr($html, 0, 8000);\r | |
| 81 | foreach ($this->fingerprints as $_fp => $_fphost) {\r | |
| 82 | $lookin = 'html';\r | |
| 83 | if (is_array($_fphost)) {\r | |
| 84 | if (isset($_fphost['head']) && $_fphost['head']) {\r | |
| 85 | $lookin = 'head';\r | |
| 86 | }\r | |
| 87 | $_fphost = $_fphost['hostname'];\r | |
| 88 | }\r | |
| 89 | if (strpos($$lookin, $_fp) !== false) {\r | |
| 90 | $this->debug("Found match: $_fphost");\r | |
| 91 | return $_fphost;\r | |
| 92 | }\r | |
| 93 | }\r | |
| 94 | $this->debug('No fingerprint matches');\r | |
| 95 | return false;\r | |
| 96 | }\r | |
| 97 | \r | |
| 98 | // returns SiteConfig instance (joined in order: exact match, wildcard, fingerprint, global, default)\r | |
| 99 | public function buildSiteConfig($url, $html='', $add_to_cache=true) {\r | |
| 100 | // extract host name\r | |
| 101 | $host = @parse_url($url, PHP_URL_HOST);\r | |
| 102 | $host = strtolower($host);\r | |
| 103 | if (substr($host, 0, 4) == 'www.') $host = substr($host, 4);\r | |
| 104 | // is merged version already cached?\r | |
| 105 | if (SiteConfig::is_cached("$host.merged")) {\r | |
| 106 | $this->debug("Returning cached and merged site config for $host");\r | |
| 107 | return SiteConfig::build("$host.merged");\r | |
| 108 | }\r | |
| 109 | // let's build from site_config/custom/ and standard/\r | |
| 110 | $config = SiteConfig::build($host);\r | |
| 111 | if ($add_to_cache && $config && !SiteConfig::is_cached("$host")) {\r | |
| 112 | SiteConfig::add_to_cache($host, $config);\r | |
| 113 | }\r | |
| 114 | // if no match, use defaults\r | |
| 115 | if (!$config) $config = new SiteConfig();\r | |
| 116 | // load fingerprint config?\r | |
| 117 | if ($config->autodetect_on_failure()) {\r | |
| 118 | // check HTML for fingerprints\r | |
| 119 | if (!empty($this->fingerprints) && ($_fphost = $this->findHostUsingFingerprints($html))) {\r | |
| 120 | if ($config_fingerprint = SiteConfig::build($_fphost)) {\r | |
| 121 | $this->debug("Appending site config settings from $_fphost (fingerprint match)");\r | |
| 122 | $config->append($config_fingerprint);\r | |
| 123 | if ($add_to_cache && !SiteConfig::is_cached($_fphost)) {\r | |
| 124 | //$config_fingerprint->cache_in_apc = true;\r | |
| 125 | SiteConfig::add_to_cache($_fphost, $config_fingerprint);\r | |
| 126 | }\r | |
| 127 | }\r | |
| 128 | }\r | |
| 129 | }\r | |
| 130 | // load global config?\r | |
| 131 | if ($config->autodetect_on_failure()) {\r | |
| 132 | if ($config_global = SiteConfig::build('global', true)) {\r | |
| 133 | $this->debug('Appending site config settings from global.txt');\r | |
| 134 | $config->append($config_global);\r | |
| 135 | if ($add_to_cache && !SiteConfig::is_cached('global')) {\r | |
| 136 | //$config_global->cache_in_apc = true;\r | |
| 137 | SiteConfig::add_to_cache('global', $config_global);\r | |
| 138 | }\r | |
| 139 | }\r | |
| 140 | }\r | |
| 141 | // store copy of merged config\r | |
| 142 | if ($add_to_cache) {\r | |
| 143 | // do not store in APC if wildcard match\r | |
| 144 | $use_apc = ($host == $config->cache_key);\r | |
| 145 | $config->cache_key = null;\r | |
| 146 | SiteConfig::add_to_cache("$host.merged", $config, $use_apc);\r | |
| 147 | }\r | |
| 148 | return $config;\r | |
| 149 | }\r | |
| 150 | \r | |
| 151 | // returns true on success, false on failure\r | |
| 152 | // $smart_tidy indicates that if tidy is used and no results are produced, we will\r | |
| 153 | // try again without it. Tidy helps us deal with PHP's patchy HTML parsing most of the time\r | |
| 154 | // but it has problems of its own which we try to avoid with this option.\r | |
| 155 | public function process($html, $url, $smart_tidy=true) {\r | |
| 156 | $this->reset();\r | |
| 157 | $this->config = $this->buildSiteConfig($url, $html);\r | |
| 158 | \r | |
| 159 | // do string replacements\r | |
| 160 | if (!empty($this->config->find_string)) {\r | |
| 161 | if (count($this->config->find_string) == count($this->config->replace_string)) {\r | |
| 162 | $html = str_replace($this->config->find_string, $this->config->replace_string, $html, $_count);\r | |
| 163 | $this->debug("Strings replaced: $_count (find_string and/or replace_string)");\r | |
| 164 | } else {\r | |
| 165 | $this->debug('Skipped string replacement - incorrect number of find-replace strings in site config');\r | |
| 166 | }\r | |
| 167 | unset($_count);\r | |
| 168 | }\r | |
| 169 | \r | |
| 170 | // use tidy (if it exists)?\r | |
| 171 | // This fixes problems with some sites which would otherwise\r | |
| 172 | // trouble DOMDocument's HTML parsing. (Although sometimes it\r | |
| 173 | // makes matters worse, which is why you can override it in site config files.)\r | |
| 174 | $tidied = false;\r | |
| 175 | if ($this->config->tidy() && function_exists('tidy_parse_string') && $smart_tidy) {\r | |
| 176 | $this->debug('Using Tidy');\r | |
| 177 | $tidy = tidy_parse_string($html, self::$tidy_config, 'UTF8');\r | |
| 178 | if (tidy_clean_repair($tidy)) {\r | |
| 179 | $original_html = $html;\r | |
| 180 | $tidied = true;\r | |
| 181 | $html = $tidy->value;\r | |
| 182 | }\r | |
| 183 | unset($tidy);\r | |
| 184 | }\r | |
| 185 | \r | |
| 186 | // load and parse html\r | |
| 187 | $_parser = $this->config->parser();\r | |
| 188 | if (!in_array($_parser, $this->allowedParsers)) {\r | |
| 189 | $this->debug("HTML parser $_parser not listed, using libxml instead");\r | |
| 190 | $_parser = 'libxml';\r | |
| 191 | }\r | |
| 192 | $this->debug("Attempting to parse HTML with $_parser");\r | |
| 193 | $this->readability = new Readability($html, $url, $_parser);\r | |
| 194 | \r | |
| 195 | // we use xpath to find elements in the given HTML document\r | |
| 196 | // see http://en.wikipedia.org/wiki/XPath_1.0\r | |
| 197 | $xpath = new DOMXPath($this->readability->dom);\r | |
| 198 | \r | |
| 199 | // try to get next page link\r | |
| 200 | foreach ($this->config->next_page_link as $pattern) {\r | |
| 201 | $elems = @$xpath->evaluate($pattern, $this->readability->dom);\r | |
| 202 | if (is_string($elems)) {\r | |
| 203 | $this->nextPageUrl = trim($elems);\r | |
| 204 | break;\r | |
| 205 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) {\r | |
| 206 | foreach ($elems as $item) {\r | |
| 207 | if ($item instanceof DOMElement && $item->hasAttribute('href')) {\r | |
| 208 | $this->nextPageUrl = $item->getAttribute('href');\r | |
| 209 | break 2;\r | |
| 210 | } elseif ($item instanceof DOMAttr && $item->value) {\r | |
| 211 | $this->nextPageUrl = $item->value;\r | |
| 212 | break 2;\r | |
| 213 | }\r | |
| 214 | }\r | |
| 215 | }\r | |
| 216 | }\r | |
| 217 | \r | |
| 218 | // try to get title\r | |
| 219 | foreach ($this->config->title as $pattern) {\r | |
| 220 | // $this->debug("Trying $pattern");\r | |
| 221 | $elems = @$xpath->evaluate($pattern, $this->readability->dom);\r | |
| 222 | if (is_string($elems)) {\r | |
| 223 | $this->title = trim($elems);\r | |
| 224 | $this->debug('Title expression evaluated as string: '.$this->title);\r | |
| 225 | $this->debug("...XPath match: $pattern");\r | |
| 226 | break;\r | |
| 227 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) {\r | |
| 228 | $this->title = $elems->item(0)->textContent;\r | |
| 229 | $this->debug('Title matched: '.$this->title);\r | |
| 230 | $this->debug("...XPath match: $pattern");\r | |
| 231 | // remove title from document\r | |
| 232 | try {\r | |
| 233 | $elems->item(0)->parentNode->removeChild($elems->item(0));\r | |
| 234 | } catch (DOMException $e) {\r | |
| 235 | // do nothing\r | |
| 236 | }\r | |
| 237 | break;\r | |
| 238 | }\r | |
| 239 | }\r | |
| 240 | \r | |
| 241 | // try to get author (if it hasn't already been set)\r | |
| 242 | if (empty($this->author)) {\r | |
| 243 | foreach ($this->config->author as $pattern) {\r | |
| 244 | $elems = @$xpath->evaluate($pattern, $this->readability->dom);\r | |
| 245 | if (is_string($elems)) {\r | |
| 246 | if (trim($elems) != '') {\r | |
| 247 | $this->author[] = trim($elems);\r | |
| 248 | $this->debug('Author expression evaluated as string: '.trim($elems));\r | |
| 249 | $this->debug("...XPath match: $pattern");\r | |
| 250 | break;\r | |
| 251 | }\r | |
| 252 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) {\r | |
| 253 | foreach ($elems as $elem) {\r | |
| 254 | if (!isset($elem->parentNode)) continue;\r | |
| 255 | $this->author[] = trim($elem->textContent);\r | |
| 256 | $this->debug('Author matched: '.trim($elem->textContent));\r | |
| 257 | }\r | |
| 258 | if (!empty($this->author)) {\r | |
| 259 | $this->debug("...XPath match: $pattern");\r | |
| 260 | break;\r | |
| 261 | }\r | |
| 262 | }\r | |
| 263 | }\r | |
| 264 | }\r | |
| 265 | \r | |
| 266 | // try to get language\r | |
| 267 | $_lang_xpath = array('//html[@lang]/@lang', '//meta[@name="DC.language"]/@content');\r | |
| 268 | foreach ($_lang_xpath as $pattern) {\r | |
| 269 | $elems = @$xpath->evaluate($pattern, $this->readability->dom);\r | |
| 270 | if (is_string($elems)) {\r | |
| 271 | if (trim($elems) != '') {\r | |
| 272 | $this->language = trim($elems);\r | |
| 273 | $this->debug('Language matched: '.$this->language);\r | |
| 274 | break;\r | |
| 275 | }\r | |
| 276 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) {\r | |
| 277 | foreach ($elems as $elem) {\r | |
| 278 | if (!isset($elem->parentNode)) continue;\r | |
| 279 | $this->language = trim($elem->textContent);\r | |
| 280 | $this->debug('Language matched: '.$this->language); \r | |
| 281 | }\r | |
| 282 | if ($this->language) break;\r | |
| 283 | }\r | |
| 284 | }\r | |
| 285 | \r | |
| 286 | // try to get date\r | |
| 287 | foreach ($this->config->date as $pattern) {\r | |
| 288 | $elems = @$xpath->evaluate($pattern, $this->readability->dom);\r | |
| 289 | if (is_string($elems)) {\r | |
| 290 | $this->date = strtotime(trim($elems, "; \t\n\r\0\x0B")); \r | |
| 291 | } elseif ($elems instanceof DOMNodeList && $elems->length > 0) {\r | |
| 292 | $this->date = $elems->item(0)->textContent;\r | |
| 293 | $this->date = strtotime(trim($this->date, "; \t\n\r\0\x0B"));\r | |
| 294 | // remove date from document\r | |
| 295 | // $elems->item(0)->parentNode->removeChild($elems->item(0));\r | |
| 296 | }\r | |
| 297 | if (!$this->date) {\r | |
| 298 | $this->date = null;\r | |
| 299 | } else {\r | |
| 300 | $this->debug('Date matched: '.date('Y-m-d H:i:s', $this->date));\r | |
| 301 | $this->debug("...XPath match: $pattern");\r | |
| 302 | break;\r | |
| 303 | }\r | |
| 304 | }\r | |
| 305 | \r | |
| 306 | // strip elements (using xpath expressions)\r | |
| 307 | foreach ($this->config->strip as $pattern) {\r | |
| 308 | $elems = @$xpath->query($pattern, $this->readability->dom);\r | |
| 309 | // check for matches\r | |
| 310 | if ($elems && $elems->length > 0) {\r | |
| 311 | $this->debug('Stripping '.$elems->length.' elements (strip)');\r | |
| 312 | for ($i=$elems->length-1; $i >= 0; $i--) {\r | |
| 313 | $elems->item($i)->parentNode->removeChild($elems->item($i));\r | |
| 314 | }\r | |
| 315 | }\r | |
| 316 | }\r | |
| 317 | \r | |
| 318 | // strip elements (using id and class attribute values)\r | |
| 319 | foreach ($this->config->strip_id_or_class as $string) {\r | |
| 320 | $string = strtr($string, array("'"=>'', '"'=>''));\r | |
| 321 | $elems = @$xpath->query("//*[contains(@class, '$string') or contains(@id, '$string')]", $this->readability->dom);\r | |
| 322 | // check for matches\r | |
| 323 | if ($elems && $elems->length > 0) {\r | |
| 324 | $this->debug('Stripping '.$elems->length.' elements (strip_id_or_class)');\r | |
| 325 | for ($i=$elems->length-1; $i >= 0; $i--) {\r | |
| 326 | $elems->item($i)->parentNode->removeChild($elems->item($i));\r | |
| 327 | }\r | |
| 328 | }\r | |
| 329 | }\r | |
| 330 | \r | |
| 331 | // strip images (using src attribute values)\r | |
| 332 | foreach ($this->config->strip_image_src as $string) {\r | |
| 333 | $string = strtr($string, array("'"=>'', '"'=>''));\r | |
| 334 | $elems = @$xpath->query("//img[contains(@src, '$string')]", $this->readability->dom);\r | |
| 335 | // check for matches\r | |
| 336 | if ($elems && $elems->length > 0) {\r | |
| 337 | $this->debug('Stripping '.$elems->length.' image elements');\r | |
| 338 | for ($i=$elems->length-1; $i >= 0; $i--) {\r | |
| 339 | $elems->item($i)->parentNode->removeChild($elems->item($i));\r | |
| 340 | }\r | |
| 341 | }\r | |
| 342 | }\r | |
| 343 | // strip elements using Readability.com and Instapaper.com ignore class names\r | |
| 344 | // .entry-unrelated and .instapaper_ignore\r | |
| 345 | // See https://www.readability.com/publishers/guidelines/#view-plainGuidelines\r | |
| 346 | // and http://blog.instapaper.com/post/730281947\r | |
| 347 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' entry-unrelated ') or contains(concat(' ',normalize-space(@class),' '),' instapaper_ignore ')]", $this->readability->dom);\r | |
| 348 | // check for matches\r | |
| 349 | if ($elems && $elems->length > 0) {\r | |
| 350 | $this->debug('Stripping '.$elems->length.' .entry-unrelated,.instapaper_ignore elements');\r | |
| 351 | for ($i=$elems->length-1; $i >= 0; $i--) {\r | |
| 352 | $elems->item($i)->parentNode->removeChild($elems->item($i));\r | |
| 353 | }\r | |
| 354 | }\r | |
| 355 | \r | |
| 356 | // strip elements that contain style="display: none;"\r | |
| 357 | $elems = @$xpath->query("//*[contains(@style,'display:none')]", $this->readability->dom);\r | |
| 358 | // check for matches\r | |
| 359 | if ($elems && $elems->length > 0) {\r | |
| 360 | $this->debug('Stripping '.$elems->length.' elements with inline display:none style');\r | |
| 361 | for ($i=$elems->length-1; $i >= 0; $i--) {\r | |
| 362 | $elems->item($i)->parentNode->removeChild($elems->item($i));\r | |
| 363 | }\r | |
| 364 | }\r | |
| 365 | \r | |
| 366 | // try to get body\r | |
| 367 | foreach ($this->config->body as $pattern) {\r | |
| 368 | $elems = @$xpath->query($pattern, $this->readability->dom);\r | |
| 369 | // check for matches\r | |
| 370 | if ($elems && $elems->length > 0) {\r | |
| 371 | $this->debug('Body matched');\r | |
| 372 | $this->debug("...XPath match: $pattern");\r | |
| 373 | if ($elems->length == 1) { \r | |
| 374 | $this->body = $elems->item(0);\r | |
| 375 | // prune (clean up elements that may not be content)\r | |
| 376 | if ($this->config->prune()) {\r | |
| 377 | $this->debug('...pruning content');\r | |
| 378 | $this->readability->prepArticle($this->body);\r | |
| 379 | }\r | |
| 380 | break;\r | |
| 381 | } else {\r | |
| 382 | $this->body = $this->readability->dom->createElement('div');\r | |
| 383 | $this->debug($elems->length.' body elems found');\r | |
| 384 | foreach ($elems as $elem) {\r | |
| 385 | if (!isset($elem->parentNode)) continue;\r | |
| 386 | $isDescendant = false;\r | |
| 387 | foreach ($this->body->childNodes as $parent) {\r | |
| 388 | if ($this->isDescendant($parent, $elem)) {\r | |
| 389 | $isDescendant = true;\r | |
| 390 | break;\r | |
| 391 | }\r | |
| 392 | }\r | |
| 393 | if ($isDescendant) {\r | |
| 394 | $this->debug('...element is child of another body element, skipping.');\r | |
| 395 | } else {\r | |
| 396 | // prune (clean up elements that may not be content)\r | |
| 397 | if ($this->config->prune()) {\r | |
| 398 | $this->debug('Pruning content');\r | |
| 399 | $this->readability->prepArticle($elem);\r | |
| 400 | }\r | |
| 401 | $this->debug('...element added to body');\r | |
| 402 | $this->body->appendChild($elem);\r | |
| 403 | }\r | |
| 404 | }\r | |
| 405 | if ($this->body->hasChildNodes()) break;\r | |
| 406 | }\r | |
| 407 | }\r | |
| 408 | } \r | |
| 409 | \r | |
| 410 | // auto detect?\r | |
| 411 | $detect_title = $detect_body = $detect_author = $detect_date = false;\r | |
| 412 | // detect title?\r | |
| 413 | if (!isset($this->title)) {\r | |
| 414 | if (empty($this->config->title) || $this->config->autodetect_on_failure()) {\r | |
| 415 | $detect_title = true;\r | |
| 416 | }\r | |
| 417 | }\r | |
| 418 | // detect body?\r | |
| 419 | if (!isset($this->body)) {\r | |
| 420 | if (empty($this->config->body) || $this->config->autodetect_on_failure()) {\r | |
| 421 | $detect_body = true;\r | |
| 422 | }\r | |
| 423 | }\r | |
| 424 | // detect author?\r | |
| 425 | if (empty($this->author)) {\r | |
| 426 | if (empty($this->config->author) || $this->config->autodetect_on_failure()) {\r | |
| 427 | $detect_author = true;\r | |
| 428 | }\r | |
| 429 | }\r | |
| 430 | // detect date?\r | |
| 431 | if (!isset($this->date)) {\r | |
| 432 | if (empty($this->config->date) || $this->config->autodetect_on_failure()) {\r | |
| 433 | $detect_date = true;\r | |
| 434 | }\r | |
| 435 | }\r | |
| 436 | \r | |
| 437 | // check for hNews\r | |
| 438 | if ($detect_title || $detect_body) {\r | |
| 439 | // check for hentry\r | |
| 440 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' hentry ')]", $this->readability->dom);\r | |
| 441 | if ($elems && $elems->length > 0) {\r | |
| 442 | $this->debug('hNews: found hentry');\r | |
| 443 | $hentry = $elems->item(0);\r | |
| 444 | \r | |
| 445 | if ($detect_title) {\r | |
| 446 | // check for entry-title\r | |
| 447 | $elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' entry-title ')]", $hentry);\r | |
| 448 | if ($elems && $elems->length > 0) {\r | |
| 449 | $this->title = $elems->item(0)->textContent;\r | |
| 450 | $this->debug('hNews: found entry-title: '.$this->title);\r | |
| 451 | // remove title from document\r | |
| 452 | $elems->item(0)->parentNode->removeChild($elems->item(0));\r | |
| 453 | $detect_title = false;\r | |
| 454 | }\r | |
| 455 | }\r | |
| 456 | \r | |
| 457 | if ($detect_date) {\r | |
| 458 | // check for time element with pubdate attribute\r | |
| 459 | $elems = @$xpath->query(".//time[@pubdate] | .//abbr[contains(concat(' ',normalize-space(@class),' '),' published ')]", $hentry);\r | |
| 460 | if ($elems && $elems->length > 0) {\r | |
| 461 | $this->date = strtotime(trim($elems->item(0)->textContent));\r | |
| 462 | // remove date from document\r | |
| 463 | //$elems->item(0)->parentNode->removeChild($elems->item(0));\r | |
| 464 | if ($this->date) {\r | |
| 465 | $this->debug('hNews: found publication date: '.date('Y-m-d H:i:s', $this->date));\r | |
| 466 | $detect_date = false;\r | |
| 467 | } else {\r | |
| 468 | $this->date = null;\r | |
| 469 | }\r | |
| 470 | }\r | |
| 471 | }\r | |
| 472 | \r | |
| 473 | if ($detect_author) {\r | |
| 474 | // check for time element with pubdate attribute\r | |
| 475 | $elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' vcard ') and (contains(concat(' ',normalize-space(@class),' '),' author ') or contains(concat(' ',normalize-space(@class),' '),' byline '))]", $hentry);\r | |
| 476 | if ($elems && $elems->length > 0) {\r | |
| 477 | $author = $elems->item(0);\r | |
| 478 | $fn = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' fn ')]", $author);\r | |
| 479 | if ($fn && $fn->length > 0) {\r | |
| 480 | foreach ($fn as $_fn) {\r | |
| 481 | if (trim($_fn->textContent) != '') {\r | |
| 482 | $this->author[] = trim($_fn->textContent);\r | |
| 483 | $this->debug('hNews: found author: '.trim($_fn->textContent));\r | |
| 484 | }\r | |
| 485 | }\r | |
| 486 | } else {\r | |
| 487 | if (trim($author->textContent) != '') {\r | |
| 488 | $this->author[] = trim($author->textContent);\r | |
| 489 | $this->debug('hNews: found author: '.trim($author->textContent));\r | |
| 490 | }\r | |
| 491 | }\r | |
| 492 | $detect_author = empty($this->author);\r | |
| 493 | }\r | |
| 494 | }\r | |
| 495 | \r | |
| 496 | // check for entry-content.\r | |
| 497 | // according to hAtom spec, if there are multiple elements marked entry-content,\r | |
| 498 | // we include all of these in the order they appear - see http://microformats.org/wiki/hatom#Entry_Content\r | |
| 499 | if ($detect_body) {\r | |
| 500 | $elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' entry-content ')]", $hentry);\r | |
| 501 | if ($elems && $elems->length > 0) {\r | |
| 502 | $this->debug('hNews: found entry-content');\r | |
| 503 | if ($elems->length == 1) {\r | |
| 504 | // what if it's empty? (some sites misuse hNews - place their content outside an empty entry-content element)\r | |
| 505 | $e = $elems->item(0);\r | |
| 506 | if (($e->tagName == 'img') || (trim($e->textContent) != '')) {\r | |
| 507 | $this->body = $elems->item(0);\r | |
| 508 | // prune (clean up elements that may not be content)\r | |
| 509 | if ($this->config->prune()) {\r | |
| 510 | $this->debug('Pruning content');\r | |
| 511 | $this->readability->prepArticle($this->body);\r | |
| 512 | }\r | |
| 513 | $detect_body = false;\r | |
| 514 | } else {\r | |
| 515 | $this->debug('hNews: skipping entry-content - appears not to contain content');\r | |
| 516 | }\r | |
| 517 | unset($e);\r | |
| 518 | } else {\r | |
| 519 | $this->body = $this->readability->dom->createElement('div');\r | |
| 520 | $this->debug($elems->length.' entry-content elems found');\r | |
| 521 | foreach ($elems as $elem) {\r | |
| 522 | if (!isset($elem->parentNode)) continue;\r | |
| 523 | $isDescendant = false;\r | |
| 524 | foreach ($this->body->childNodes as $parent) {\r | |
| 525 | if ($this->isDescendant($parent, $elem)) {\r | |
| 526 | $isDescendant = true;\r | |
| 527 | break;\r | |
| 528 | }\r | |
| 529 | }\r | |
| 530 | if ($isDescendant) {\r | |
| 531 | $this->debug('Element is child of another body element, skipping.');\r | |
| 532 | } else {\r | |
| 533 | // prune (clean up elements that may not be content)\r | |
| 534 | if ($this->config->prune()) {\r | |
| 535 | $this->debug('Pruning content');\r | |
| 536 | $this->readability->prepArticle($elem);\r | |
| 537 | } \r | |
| 538 | $this->debug('Element added to body'); \r | |
| 539 | $this->body->appendChild($elem);\r | |
| 540 | }\r | |
| 541 | }\r | |
| 542 | $detect_body = false;\r | |
| 543 | }\r | |
| 544 | }\r | |
| 545 | }\r | |
| 546 | }\r | |
| 547 | }\r | |
| 548 | \r | |
| 549 | // check for elements marked with instapaper_title\r | |
| 550 | if ($detect_title) {\r | |
| 551 | // check for instapaper_title\r | |
| 552 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' instapaper_title ')]", $this->readability->dom);\r | |
| 553 | if ($elems && $elems->length > 0) {\r | |
| 554 | $this->title = $elems->item(0)->textContent;\r | |
| 555 | $this->debug('Title found (.instapaper_title): '.$this->title);\r | |
| 556 | // remove title from document\r | |
| 557 | $elems->item(0)->parentNode->removeChild($elems->item(0));\r | |
| 558 | $detect_title = false;\r | |
| 559 | }\r | |
| 560 | }\r | |
| 561 | // check for elements marked with instapaper_body\r | |
| 562 | if ($detect_body) {\r | |
| 563 | $elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' instapaper_body ')]", $this->readability->dom);\r | |
| 564 | if ($elems && $elems->length > 0) {\r | |
| 565 | $this->debug('body found (.instapaper_body)');\r | |
| 566 | $this->body = $elems->item(0);\r | |
| 567 | // prune (clean up elements that may not be content)\r | |
| 568 | if ($this->config->prune()) {\r | |
| 569 | $this->debug('Pruning content');\r | |
| 570 | $this->readability->prepArticle($this->body);\r | |
| 571 | }\r | |
| 572 | $detect_body = false;\r | |
| 573 | }\r | |
| 574 | }\r | |
| 575 | \r | |
| 576 | // Find author in rel="author" marked element\r | |
| 577 | // We only use this if there's exactly one.\r | |
| 578 | // If there's more than one, it could indicate more than\r | |
| 579 | // one author, but it could also indicate that we're processing\r | |
| 580 | // a page listing different articles with different authors.\r | |
| 581 | if ($detect_author) {\r | |
| 582 | $elems = @$xpath->query("//a[contains(concat(' ',normalize-space(@rel),' '),' author ')]", $this->readability->dom);\r | |
| 583 | if ($elems && $elems->length == 1) {\r | |
| 584 | $author = trim($elems->item(0)->textContent);\r | |
| 585 | if ($author != '') {\r | |
| 586 | $this->debug("Author found (rel=\"author\"): $author");\r | |
| 587 | $this->author[] = $author;\r | |
| 588 | $detect_author = false;\r | |
| 589 | }\r | |
| 590 | }\r | |
| 591 | }\r | |
| 592 | \r | |
| 593 | // Find date in pubdate marked time element\r | |
| 594 | // For the same reason given above, we only use this\r | |
| 595 | // if there's exactly one element.\r | |
| 596 | if ($detect_date) {\r | |
| 597 | $elems = @$xpath->query("//time[@pubdate]", $this->readability->dom);\r | |
| 598 | if ($elems && $elems->length == 1) {\r | |
| 599 | $this->date = strtotime(trim($elems->item(0)->textContent));\r | |
| 600 | // remove date from document\r | |
| 601 | //$elems->item(0)->parentNode->removeChild($elems->item(0));\r | |
| 602 | if ($this->date) {\r | |
| 603 | $this->debug('Date found (pubdate marked time element): '.date('Y-m-d H:i:s', $this->date));\r | |
| 604 | $detect_date = false;\r | |
| 605 | } else {\r | |
| 606 | $this->date = null;\r | |
| 607 | }\r | |
| 608 | }\r | |
| 609 | }\r | |
| 610 | \r | |
| 611 | // still missing title or body, so we detect using Readability\r | |
| 612 | if ($detect_title || $detect_body) {\r | |
| 613 | $this->debug('Using Readability');\r | |
| 614 | // clone body if we're only using Readability for title (otherwise it may interfere with body element)\r | |
| 615 | if (isset($this->body)) $this->body = $this->body->cloneNode(true);\r | |
| 616 | $success = $this->readability->init();\r | |
| 617 | }\r | |
| 618 | if ($detect_title) {\r | |
| 619 | $this->debug('Detecting title');\r | |
| 620 | $this->title = $this->readability->getTitle()->textContent;\r | |
| 621 | }\r | |
| 622 | if ($detect_body && $success) {\r | |
| 623 | $this->debug('Detecting body');\r | |
| 624 | $this->body = $this->readability->getContent();\r | |
| 625 | if ($this->body->childNodes->length == 1 && $this->body->firstChild->nodeType === XML_ELEMENT_NODE) {\r | |
| 626 | $this->body = $this->body->firstChild;\r | |
| 627 | }\r | |
| 628 | // prune (clean up elements that may not be content)\r | |
| 629 | if ($this->config->prune()) {\r | |
| 630 | $this->debug('Pruning content');\r | |
| 631 | $this->readability->prepArticle($this->body);\r | |
| 632 | }\r | |
| 633 | }\r | |
| 634 | if (isset($this->body)) {\r | |
| 635 | // remove scripts\r | |
| 636 | $this->readability->removeScripts($this->body);\r | |
| 637 | // remove any h1-h6 elements that appear as first thing in the body\r | |
| 638 | // and which match our title\r | |
| 639 | if (isset($this->title) && ($this->title != '')) {\r | |
| 640 | $firstChild = $this->body->firstChild;\r | |
| 641 | while ($firstChild->nodeType && ($firstChild->nodeType !== XML_ELEMENT_NODE)) {\r | |
| 642 | $firstChild = $firstChild->nextSibling;\r | |
| 643 | }\r | |
| 644 | if (($firstChild->nodeType === XML_ELEMENT_NODE)\r | |
| 645 | && in_array(strtolower($firstChild->tagName), array('h1', 'h2', 'h3', 'h4', 'h5', 'h6'))\r | |
| 646 | && (strtolower(trim($firstChild->textContent)) == strtolower(trim($this->title)))) {\r | |
| 647 | $this->body->removeChild($firstChild);\r | |
| 648 | }\r | |
| 649 | }\r | |
| 650 | // prevent self-closing iframes\r | |
| 651 | $elems = $this->body->getElementsByTagName('iframe');\r | |
| 652 | for ($i = $elems->length-1; $i >= 0; $i--) {\r | |
| 653 | $e = $elems->item($i);\r | |
| 654 | if (!$e->hasChildNodes()) {\r | |
| 655 | $e->appendChild($this->body->ownerDocument->createTextNode('[embedded content]'));\r | |
| 656 | }\r | |
| 657 | }\r | |
| 658 | // remove image lazy loading - WordPress plugin http://wordpress.org/extend/plugins/lazy-load/\r | |
| 659 | // the plugin replaces the src attribute to point to a 1x1 gif and puts the original src\r | |
| 660 | // inside the data-lazy-src attribute. It also places the original image inside a noscript element \r | |
| 661 | // next to the amended one.\r | |
| 662 | $elems = @$xpath->query("//img[@data-lazy-src]", $this->body);\r | |
| 663 | for ($i = $elems->length-1; $i >= 0; $i--) {\r | |
| 664 | $e = $elems->item($i);\r | |
| 665 | // let's see if we can grab image from noscript\r | |
| 666 | if ($e->nextSibling !== null && $e->nextSibling->nodeName === 'noscript') {\r | |
| 667 | $_new_elem = $e->ownerDocument->createDocumentFragment();\r | |
| 668 | @$_new_elem->appendXML($e->nextSibling->innerHTML);\r | |
| 669 | $e->nextSibling->parentNode->replaceChild($_new_elem, $e->nextSibling);\r | |
| 670 | $e->parentNode->removeChild($e);\r | |
| 671 | } else {\r | |
| 672 | // Use data-lazy-src as src value\r | |
| 673 | $e->setAttribute('src', $e->getAttribute('data-lazy-src'));\r | |
| 674 | $e->removeAttribute('data-lazy-src');\r | |
| 675 | }\r | |
| 676 | }\r | |
| 677 | \r | |
| 678 | $this->success = true;\r | |
| 679 | }\r | |
| 680 | \r | |
| 681 | // if we've had no success and we've used tidy, there's a chance\r | |
| 682 | // that tidy has messed up. So let's try again without tidy...\r | |
| 683 | if (!$this->success && $tidied && $smart_tidy) {\r | |
| 684 | $this->debug('Trying again without tidy');\r | |
| 685 | $this->process($original_html, $url, false);\r | |
| 686 | }\r | |
| 687 | \r | |
| 688 | return $this->success;\r | |
| 689 | }\r | |
| 690 | \r | |
| 691 | private function isDescendant(DOMElement $parent, DOMElement $child) {\r | |
| 692 | $node = $child->parentNode;\r | |
| 693 | while ($node != null) {\r | |
| 694 | if ($node->isSameNode($parent)) return true;\r | |
| 695 | $node = $node->parentNode;\r | |
| 696 | }\r | |
| 697 | return false;\r | |
| 698 | }\r | |
| 699 | \r | |
| 700 | public function getContent() {\r | |
| 701 | return $this->body;\r | |
| 702 | }\r | |
| 703 | \r | |
| 704 | public function getTitle() {\r | |
| 705 | return $this->title;\r | |
| 706 | }\r | |
| 707 | \r | |
| 708 | public function getAuthors() {\r | |
| 709 | return $this->author;\r | |
| 710 | }\r | |
| 711 | \r | |
| 712 | public function getLanguage() {\r | |
| 713 | return $this->language;\r | |
| 714 | }\r | |
| 715 | \r | |
| 716 | public function getDate() {\r | |
| 717 | return $this->date;\r | |
| 718 | }\r | |
| 719 | \r | |
| 720 | public function getSiteConfig() {\r | |
| 721 | return $this->config;\r | |
| 722 | }\r | |
| 723 | \r | |
| 724 | public function getNextPageUrl() {\r | |
| 725 | return $this->nextPageUrl;\r | |
| 726 | }\r | |
| 727 | }\r | |
| ec397236 | 728 | ?> |