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728 lines
26 KiB
PHP
728 lines
26 KiB
PHP
<?php
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/**
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* Content Extractor
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*
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* Uses patterns specified in site config files and auto detection (hNews/PHP Readability)
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* to extract content from HTML files.
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*
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* @version 1.0
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* @date 2013-02-05
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* @author Keyvan Minoukadeh
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* @copyright 2013 Keyvan Minoukadeh
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* @license http://www.gnu.org/licenses/agpl-3.0.html AGPL v3
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*/
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class ContentExtractor
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{
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protected static $tidy_config = array(
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'clean' => true,
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'output-xhtml' => true,
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'logical-emphasis' => true,
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'show-body-only' => false,
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'new-blocklevel-tags' => 'article, aside, footer, header, hgroup, menu, nav, section, details, datagrid',
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'new-inline-tags' => 'mark, time, meter, progress, data',
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'wrap' => 0,
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'drop-empty-paras' => true,
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'drop-proprietary-attributes' => false,
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'enclose-text' => true,
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'enclose-block-text' => true,
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'merge-divs' => true,
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'merge-spans' => true,
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'char-encoding' => 'utf8',
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'hide-comments' => true
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);
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protected $html;
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protected $config;
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protected $title;
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protected $author = array();
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protected $language;
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protected $date;
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protected $body;
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protected $success = false;
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protected $nextPageUrl;
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public $allowedParsers = array('libxml', 'html5lib');
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public $fingerprints = array();
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public $readability;
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public $debug = false;
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public $debugVerbose = false;
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function __construct($path, $fallback=null) {
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SiteConfig::set_config_path($path, $fallback);
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}
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protected function debug($msg) {
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if ($this->debug) {
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$mem = round(memory_get_usage()/1024, 2);
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$memPeak = round(memory_get_peak_usage()/1024, 2);
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echo '* ',$msg;
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if ($this->debugVerbose) echo ' - mem used: ',$mem," (peak: $memPeak)";
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echo "\n";
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ob_flush();
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flush();
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}
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}
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public function reset() {
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$this->html = null;
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$this->readability = null;
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$this->config = null;
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$this->title = null;
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$this->body = null;
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$this->author = array();
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$this->language = null;
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$this->date = null;
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$this->nextPageUrl = null;
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$this->success = false;
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}
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public function findHostUsingFingerprints($html) {
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$this->debug('Checking fingerprints...');
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$head = substr($html, 0, 8000);
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foreach ($this->fingerprints as $_fp => $_fphost) {
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$lookin = 'html';
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if (is_array($_fphost)) {
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if (isset($_fphost['head']) && $_fphost['head']) {
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$lookin = 'head';
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}
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$_fphost = $_fphost['hostname'];
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}
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if (strpos($$lookin, $_fp) !== false) {
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$this->debug("Found match: $_fphost");
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return $_fphost;
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}
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}
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$this->debug('No fingerprint matches');
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return false;
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}
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// returns SiteConfig instance (joined in order: exact match, wildcard, fingerprint, global, default)
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public function buildSiteConfig($url, $html='', $add_to_cache=true) {
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// extract host name
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$host = @parse_url($url, PHP_URL_HOST);
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$host = strtolower($host);
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if (substr($host, 0, 4) == 'www.') $host = substr($host, 4);
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// is merged version already cached?
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if (SiteConfig::is_cached("$host.merged")) {
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$this->debug("Returning cached and merged site config for $host");
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return SiteConfig::build("$host.merged");
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}
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// let's build from site_config/custom/ and standard/
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$config = SiteConfig::build($host);
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if ($add_to_cache && $config && !SiteConfig::is_cached("$host")) {
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SiteConfig::add_to_cache($host, $config);
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}
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// if no match, use defaults
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if (!$config) $config = new SiteConfig();
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// load fingerprint config?
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if ($config->autodetect_on_failure()) {
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// check HTML for fingerprints
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if (!empty($this->fingerprints) && ($_fphost = $this->findHostUsingFingerprints($html))) {
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if ($config_fingerprint = SiteConfig::build($_fphost)) {
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$this->debug("Appending site config settings from $_fphost (fingerprint match)");
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$config->append($config_fingerprint);
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if ($add_to_cache && !SiteConfig::is_cached($_fphost)) {
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//$config_fingerprint->cache_in_apc = true;
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SiteConfig::add_to_cache($_fphost, $config_fingerprint);
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}
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}
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}
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}
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// load global config?
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if ($config->autodetect_on_failure()) {
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if ($config_global = SiteConfig::build('global', true)) {
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$this->debug('Appending site config settings from global.txt');
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$config->append($config_global);
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if ($add_to_cache && !SiteConfig::is_cached('global')) {
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//$config_global->cache_in_apc = true;
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SiteConfig::add_to_cache('global', $config_global);
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}
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}
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}
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// store copy of merged config
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if ($add_to_cache) {
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// do not store in APC if wildcard match
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$use_apc = ($host == $config->cache_key);
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$config->cache_key = null;
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SiteConfig::add_to_cache("$host.merged", $config, $use_apc);
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}
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return $config;
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}
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// returns true on success, false on failure
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// $smart_tidy indicates that if tidy is used and no results are produced, we will
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// try again without it. Tidy helps us deal with PHP's patchy HTML parsing most of the time
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// but it has problems of its own which we try to avoid with this option.
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public function process($html, $url, $smart_tidy=true) {
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$this->reset();
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$this->config = $this->buildSiteConfig($url, $html);
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// do string replacements
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if (!empty($this->config->find_string)) {
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if (count($this->config->find_string) == count($this->config->replace_string)) {
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$html = str_replace($this->config->find_string, $this->config->replace_string, $html, $_count);
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$this->debug("Strings replaced: $_count (find_string and/or replace_string)");
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} else {
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$this->debug('Skipped string replacement - incorrect number of find-replace strings in site config');
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}
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unset($_count);
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}
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// use tidy (if it exists)?
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// This fixes problems with some sites which would otherwise
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// trouble DOMDocument's HTML parsing. (Although sometimes it
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// makes matters worse, which is why you can override it in site config files.)
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$tidied = false;
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if ($this->config->tidy() && function_exists('tidy_parse_string') && $smart_tidy) {
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$this->debug('Using Tidy');
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$tidy = tidy_parse_string($html, self::$tidy_config, 'UTF8');
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if (tidy_clean_repair($tidy)) {
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$original_html = $html;
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$tidied = true;
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$html = $tidy->value;
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}
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unset($tidy);
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}
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// load and parse html
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$_parser = $this->config->parser();
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if (!in_array($_parser, $this->allowedParsers)) {
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$this->debug("HTML parser $_parser not listed, using libxml instead");
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$_parser = 'libxml';
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}
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$this->debug("Attempting to parse HTML with $_parser");
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$this->readability = new Readability($html, $url, $_parser);
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// we use xpath to find elements in the given HTML document
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// see http://en.wikipedia.org/wiki/XPath_1.0
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$xpath = new DOMXPath($this->readability->dom);
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// try to get next page link
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foreach ($this->config->next_page_link as $pattern) {
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$elems = @$xpath->evaluate($pattern, $this->readability->dom);
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if (is_string($elems)) {
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$this->nextPageUrl = trim($elems);
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break;
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} elseif ($elems instanceof DOMNodeList && $elems->length > 0) {
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foreach ($elems as $item) {
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if ($item instanceof DOMElement && $item->hasAttribute('href')) {
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$this->nextPageUrl = $item->getAttribute('href');
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break 2;
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} elseif ($item instanceof DOMAttr && $item->value) {
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$this->nextPageUrl = $item->value;
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break 2;
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}
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}
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}
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}
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// try to get title
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foreach ($this->config->title as $pattern) {
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// $this->debug("Trying $pattern");
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$elems = @$xpath->evaluate($pattern, $this->readability->dom);
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if (is_string($elems)) {
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$this->title = trim($elems);
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$this->debug('Title expression evaluated as string: '.$this->title);
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$this->debug("...XPath match: $pattern");
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break;
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} elseif ($elems instanceof DOMNodeList && $elems->length > 0) {
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$this->title = $elems->item(0)->textContent;
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$this->debug('Title matched: '.$this->title);
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$this->debug("...XPath match: $pattern");
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// remove title from document
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try {
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$elems->item(0)->parentNode->removeChild($elems->item(0));
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} catch (DOMException $e) {
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// do nothing
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}
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break;
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}
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}
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// try to get author (if it hasn't already been set)
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if (empty($this->author)) {
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foreach ($this->config->author as $pattern) {
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$elems = @$xpath->evaluate($pattern, $this->readability->dom);
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if (is_string($elems)) {
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if (trim($elems) != '') {
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$this->author[] = trim($elems);
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$this->debug('Author expression evaluated as string: '.trim($elems));
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$this->debug("...XPath match: $pattern");
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break;
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}
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} elseif ($elems instanceof DOMNodeList && $elems->length > 0) {
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foreach ($elems as $elem) {
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if (!isset($elem->parentNode)) continue;
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$this->author[] = trim($elem->textContent);
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$this->debug('Author matched: '.trim($elem->textContent));
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}
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if (!empty($this->author)) {
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$this->debug("...XPath match: $pattern");
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break;
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}
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}
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}
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}
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// try to get language
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$_lang_xpath = array('//html[@lang]/@lang', '//meta[@name="DC.language"]/@content');
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foreach ($_lang_xpath as $pattern) {
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$elems = @$xpath->evaluate($pattern, $this->readability->dom);
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if (is_string($elems)) {
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if (trim($elems) != '') {
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$this->language = trim($elems);
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$this->debug('Language matched: '.$this->language);
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break;
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}
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} elseif ($elems instanceof DOMNodeList && $elems->length > 0) {
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foreach ($elems as $elem) {
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if (!isset($elem->parentNode)) continue;
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$this->language = trim($elem->textContent);
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$this->debug('Language matched: '.$this->language);
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}
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if ($this->language) break;
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}
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}
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// try to get date
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foreach ($this->config->date as $pattern) {
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$elems = @$xpath->evaluate($pattern, $this->readability->dom);
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if (is_string($elems)) {
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$this->date = strtotime(trim($elems, "; \t\n\r\0\x0B"));
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} elseif ($elems instanceof DOMNodeList && $elems->length > 0) {
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$this->date = $elems->item(0)->textContent;
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$this->date = strtotime(trim($this->date, "; \t\n\r\0\x0B"));
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// remove date from document
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// $elems->item(0)->parentNode->removeChild($elems->item(0));
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}
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if (!$this->date) {
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$this->date = null;
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} else {
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$this->debug('Date matched: '.date('Y-m-d H:i:s', $this->date));
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$this->debug("...XPath match: $pattern");
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break;
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}
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}
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// strip elements (using xpath expressions)
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foreach ($this->config->strip as $pattern) {
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$elems = @$xpath->query($pattern, $this->readability->dom);
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// check for matches
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if ($elems && $elems->length > 0) {
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$this->debug('Stripping '.$elems->length.' elements (strip)');
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for ($i=$elems->length-1; $i >= 0; $i--) {
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$elems->item($i)->parentNode->removeChild($elems->item($i));
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}
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}
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}
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// strip elements (using id and class attribute values)
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foreach ($this->config->strip_id_or_class as $string) {
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$string = strtr($string, array("'"=>'', '"'=>''));
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$elems = @$xpath->query("//*[contains(@class, '$string') or contains(@id, '$string')]", $this->readability->dom);
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// check for matches
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if ($elems && $elems->length > 0) {
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$this->debug('Stripping '.$elems->length.' elements (strip_id_or_class)');
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for ($i=$elems->length-1; $i >= 0; $i--) {
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$elems->item($i)->parentNode->removeChild($elems->item($i));
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}
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}
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}
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// strip images (using src attribute values)
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foreach ($this->config->strip_image_src as $string) {
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$string = strtr($string, array("'"=>'', '"'=>''));
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$elems = @$xpath->query("//img[contains(@src, '$string')]", $this->readability->dom);
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// check for matches
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if ($elems && $elems->length > 0) {
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$this->debug('Stripping '.$elems->length.' image elements');
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for ($i=$elems->length-1; $i >= 0; $i--) {
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$elems->item($i)->parentNode->removeChild($elems->item($i));
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}
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}
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}
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// strip elements using Readability.com and Instapaper.com ignore class names
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// .entry-unrelated and .instapaper_ignore
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// See https://www.readability.com/publishers/guidelines/#view-plainGuidelines
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// and http://blog.instapaper.com/post/730281947
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$elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' entry-unrelated ') or contains(concat(' ',normalize-space(@class),' '),' instapaper_ignore ')]", $this->readability->dom);
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// check for matches
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if ($elems && $elems->length > 0) {
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$this->debug('Stripping '.$elems->length.' .entry-unrelated,.instapaper_ignore elements');
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for ($i=$elems->length-1; $i >= 0; $i--) {
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$elems->item($i)->parentNode->removeChild($elems->item($i));
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}
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}
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// strip elements that contain style="display: none;"
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$elems = @$xpath->query("//*[contains(@style,'display:none')]", $this->readability->dom);
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// check for matches
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if ($elems && $elems->length > 0) {
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$this->debug('Stripping '.$elems->length.' elements with inline display:none style');
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for ($i=$elems->length-1; $i >= 0; $i--) {
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$elems->item($i)->parentNode->removeChild($elems->item($i));
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}
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}
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// try to get body
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foreach ($this->config->body as $pattern) {
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$elems = @$xpath->query($pattern, $this->readability->dom);
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// check for matches
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if ($elems && $elems->length > 0) {
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$this->debug('Body matched');
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$this->debug("...XPath match: $pattern");
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if ($elems->length == 1) {
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$this->body = $elems->item(0);
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// prune (clean up elements that may not be content)
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if ($this->config->prune()) {
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$this->debug('...pruning content');
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$this->readability->prepArticle($this->body);
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}
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break;
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} else {
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$this->body = $this->readability->dom->createElement('div');
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$this->debug($elems->length.' body elems found');
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foreach ($elems as $elem) {
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if (!isset($elem->parentNode)) continue;
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$isDescendant = false;
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foreach ($this->body->childNodes as $parent) {
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if ($this->isDescendant($parent, $elem)) {
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$isDescendant = true;
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break;
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}
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}
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if ($isDescendant) {
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$this->debug('...element is child of another body element, skipping.');
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} else {
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// prune (clean up elements that may not be content)
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if ($this->config->prune()) {
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$this->debug('Pruning content');
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$this->readability->prepArticle($elem);
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}
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$this->debug('...element added to body');
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$this->body->appendChild($elem);
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}
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}
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if ($this->body->hasChildNodes()) break;
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}
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}
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}
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// auto detect?
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$detect_title = $detect_body = $detect_author = $detect_date = false;
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// detect title?
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if (!isset($this->title)) {
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if (empty($this->config->title) || $this->config->autodetect_on_failure()) {
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$detect_title = true;
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}
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}
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// detect body?
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if (!isset($this->body)) {
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if (empty($this->config->body) || $this->config->autodetect_on_failure()) {
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$detect_body = true;
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}
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}
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// detect author?
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if (empty($this->author)) {
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if (empty($this->config->author) || $this->config->autodetect_on_failure()) {
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$detect_author = true;
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}
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}
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// detect date?
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if (!isset($this->date)) {
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if (empty($this->config->date) || $this->config->autodetect_on_failure()) {
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$detect_date = true;
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}
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}
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// check for hNews
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if ($detect_title || $detect_body) {
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// check for hentry
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$elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' hentry ')]", $this->readability->dom);
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if ($elems && $elems->length > 0) {
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$this->debug('hNews: found hentry');
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$hentry = $elems->item(0);
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if ($detect_title) {
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// check for entry-title
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$elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' entry-title ')]", $hentry);
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if ($elems && $elems->length > 0) {
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$this->title = $elems->item(0)->textContent;
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$this->debug('hNews: found entry-title: '.$this->title);
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// remove title from document
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$elems->item(0)->parentNode->removeChild($elems->item(0));
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$detect_title = false;
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}
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}
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if ($detect_date) {
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// check for time element with pubdate attribute
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|
$elems = @$xpath->query(".//time[@pubdate] | .//abbr[contains(concat(' ',normalize-space(@class),' '),' published ')]", $hentry);
|
|
if ($elems && $elems->length > 0) {
|
|
$this->date = strtotime(trim($elems->item(0)->textContent));
|
|
// remove date from document
|
|
//$elems->item(0)->parentNode->removeChild($elems->item(0));
|
|
if ($this->date) {
|
|
$this->debug('hNews: found publication date: '.date('Y-m-d H:i:s', $this->date));
|
|
$detect_date = false;
|
|
} else {
|
|
$this->date = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($detect_author) {
|
|
// check for time element with pubdate attribute
|
|
$elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' vcard ') and (contains(concat(' ',normalize-space(@class),' '),' author ') or contains(concat(' ',normalize-space(@class),' '),' byline '))]", $hentry);
|
|
if ($elems && $elems->length > 0) {
|
|
$author = $elems->item(0);
|
|
$fn = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' fn ')]", $author);
|
|
if ($fn && $fn->length > 0) {
|
|
foreach ($fn as $_fn) {
|
|
if (trim($_fn->textContent) != '') {
|
|
$this->author[] = trim($_fn->textContent);
|
|
$this->debug('hNews: found author: '.trim($_fn->textContent));
|
|
}
|
|
}
|
|
} else {
|
|
if (trim($author->textContent) != '') {
|
|
$this->author[] = trim($author->textContent);
|
|
$this->debug('hNews: found author: '.trim($author->textContent));
|
|
}
|
|
}
|
|
$detect_author = empty($this->author);
|
|
}
|
|
}
|
|
|
|
// check for entry-content.
|
|
// according to hAtom spec, if there are multiple elements marked entry-content,
|
|
// we include all of these in the order they appear - see http://microformats.org/wiki/hatom#Entry_Content
|
|
if ($detect_body) {
|
|
$elems = @$xpath->query(".//*[contains(concat(' ',normalize-space(@class),' '),' entry-content ')]", $hentry);
|
|
if ($elems && $elems->length > 0) {
|
|
$this->debug('hNews: found entry-content');
|
|
if ($elems->length == 1) {
|
|
// what if it's empty? (some sites misuse hNews - place their content outside an empty entry-content element)
|
|
$e = $elems->item(0);
|
|
if (($e->tagName == 'img') || (trim($e->textContent) != '')) {
|
|
$this->body = $elems->item(0);
|
|
// prune (clean up elements that may not be content)
|
|
if ($this->config->prune()) {
|
|
$this->debug('Pruning content');
|
|
$this->readability->prepArticle($this->body);
|
|
}
|
|
$detect_body = false;
|
|
} else {
|
|
$this->debug('hNews: skipping entry-content - appears not to contain content');
|
|
}
|
|
unset($e);
|
|
} else {
|
|
$this->body = $this->readability->dom->createElement('div');
|
|
$this->debug($elems->length.' entry-content elems found');
|
|
foreach ($elems as $elem) {
|
|
if (!isset($elem->parentNode)) continue;
|
|
$isDescendant = false;
|
|
foreach ($this->body->childNodes as $parent) {
|
|
if ($this->isDescendant($parent, $elem)) {
|
|
$isDescendant = true;
|
|
break;
|
|
}
|
|
}
|
|
if ($isDescendant) {
|
|
$this->debug('Element is child of another body element, skipping.');
|
|
} else {
|
|
// prune (clean up elements that may not be content)
|
|
if ($this->config->prune()) {
|
|
$this->debug('Pruning content');
|
|
$this->readability->prepArticle($elem);
|
|
}
|
|
$this->debug('Element added to body');
|
|
$this->body->appendChild($elem);
|
|
}
|
|
}
|
|
$detect_body = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// check for elements marked with instapaper_title
|
|
if ($detect_title) {
|
|
// check for instapaper_title
|
|
$elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' instapaper_title ')]", $this->readability->dom);
|
|
if ($elems && $elems->length > 0) {
|
|
$this->title = $elems->item(0)->textContent;
|
|
$this->debug('Title found (.instapaper_title): '.$this->title);
|
|
// remove title from document
|
|
$elems->item(0)->parentNode->removeChild($elems->item(0));
|
|
$detect_title = false;
|
|
}
|
|
}
|
|
// check for elements marked with instapaper_body
|
|
if ($detect_body) {
|
|
$elems = @$xpath->query("//*[contains(concat(' ',normalize-space(@class),' '),' instapaper_body ')]", $this->readability->dom);
|
|
if ($elems && $elems->length > 0) {
|
|
$this->debug('body found (.instapaper_body)');
|
|
$this->body = $elems->item(0);
|
|
// prune (clean up elements that may not be content)
|
|
if ($this->config->prune()) {
|
|
$this->debug('Pruning content');
|
|
$this->readability->prepArticle($this->body);
|
|
}
|
|
$detect_body = false;
|
|
}
|
|
}
|
|
|
|
// Find author in rel="author" marked element
|
|
// We only use this if there's exactly one.
|
|
// If there's more than one, it could indicate more than
|
|
// one author, but it could also indicate that we're processing
|
|
// a page listing different articles with different authors.
|
|
if ($detect_author) {
|
|
$elems = @$xpath->query("//a[contains(concat(' ',normalize-space(@rel),' '),' author ')]", $this->readability->dom);
|
|
if ($elems && $elems->length == 1) {
|
|
$author = trim($elems->item(0)->textContent);
|
|
if ($author != '') {
|
|
$this->debug("Author found (rel=\"author\"): $author");
|
|
$this->author[] = $author;
|
|
$detect_author = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Find date in pubdate marked time element
|
|
// For the same reason given above, we only use this
|
|
// if there's exactly one element.
|
|
if ($detect_date) {
|
|
$elems = @$xpath->query("//time[@pubdate]", $this->readability->dom);
|
|
if ($elems && $elems->length == 1) {
|
|
$this->date = strtotime(trim($elems->item(0)->textContent));
|
|
// remove date from document
|
|
//$elems->item(0)->parentNode->removeChild($elems->item(0));
|
|
if ($this->date) {
|
|
$this->debug('Date found (pubdate marked time element): '.date('Y-m-d H:i:s', $this->date));
|
|
$detect_date = false;
|
|
} else {
|
|
$this->date = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
// still missing title or body, so we detect using Readability
|
|
if ($detect_title || $detect_body) {
|
|
$this->debug('Using Readability');
|
|
// clone body if we're only using Readability for title (otherwise it may interfere with body element)
|
|
if (isset($this->body)) $this->body = $this->body->cloneNode(true);
|
|
$success = $this->readability->init();
|
|
}
|
|
if ($detect_title) {
|
|
$this->debug('Detecting title');
|
|
$this->title = $this->readability->getTitle()->textContent;
|
|
}
|
|
if ($detect_body && $success) {
|
|
$this->debug('Detecting body');
|
|
$this->body = $this->readability->getContent();
|
|
if ($this->body->childNodes->length == 1 && $this->body->firstChild->nodeType === XML_ELEMENT_NODE) {
|
|
$this->body = $this->body->firstChild;
|
|
}
|
|
// prune (clean up elements that may not be content)
|
|
if ($this->config->prune()) {
|
|
$this->debug('Pruning content');
|
|
$this->readability->prepArticle($this->body);
|
|
}
|
|
}
|
|
if (isset($this->body)) {
|
|
// remove scripts
|
|
$this->readability->removeScripts($this->body);
|
|
// remove any h1-h6 elements that appear as first thing in the body
|
|
// and which match our title
|
|
if (isset($this->title) && ($this->title != '')) {
|
|
$firstChild = $this->body->firstChild;
|
|
while ($firstChild->nodeType && ($firstChild->nodeType !== XML_ELEMENT_NODE)) {
|
|
$firstChild = $firstChild->nextSibling;
|
|
}
|
|
if (($firstChild->nodeType === XML_ELEMENT_NODE)
|
|
&& in_array(strtolower($firstChild->tagName), array('h1', 'h2', 'h3', 'h4', 'h5', 'h6'))
|
|
&& (strtolower(trim($firstChild->textContent)) == strtolower(trim($this->title)))) {
|
|
$this->body->removeChild($firstChild);
|
|
}
|
|
}
|
|
// prevent self-closing iframes
|
|
$elems = $this->body->getElementsByTagName('iframe');
|
|
for ($i = $elems->length-1; $i >= 0; $i--) {
|
|
$e = $elems->item($i);
|
|
if (!$e->hasChildNodes()) {
|
|
$e->appendChild($this->body->ownerDocument->createTextNode('[embedded content]'));
|
|
}
|
|
}
|
|
// remove image lazy loading - WordPress plugin http://wordpress.org/extend/plugins/lazy-load/
|
|
// the plugin replaces the src attribute to point to a 1x1 gif and puts the original src
|
|
// inside the data-lazy-src attribute. It also places the original image inside a noscript element
|
|
// next to the amended one.
|
|
$elems = @$xpath->query("//img[@data-lazy-src]", $this->body);
|
|
for ($i = $elems->length-1; $i >= 0; $i--) {
|
|
$e = $elems->item($i);
|
|
// let's see if we can grab image from noscript
|
|
if ($e->nextSibling !== null && $e->nextSibling->nodeName === 'noscript') {
|
|
$_new_elem = $e->ownerDocument->createDocumentFragment();
|
|
@$_new_elem->appendXML($e->nextSibling->innerHTML);
|
|
$e->nextSibling->parentNode->replaceChild($_new_elem, $e->nextSibling);
|
|
$e->parentNode->removeChild($e);
|
|
} else {
|
|
// Use data-lazy-src as src value
|
|
$e->setAttribute('src', $e->getAttribute('data-lazy-src'));
|
|
$e->removeAttribute('data-lazy-src');
|
|
}
|
|
}
|
|
|
|
$this->success = true;
|
|
}
|
|
|
|
// if we've had no success and we've used tidy, there's a chance
|
|
// that tidy has messed up. So let's try again without tidy...
|
|
if (!$this->success && $tidied && $smart_tidy) {
|
|
$this->debug('Trying again without tidy');
|
|
$this->process($original_html, $url, false);
|
|
}
|
|
|
|
return $this->success;
|
|
}
|
|
|
|
private function isDescendant(DOMElement $parent, DOMElement $child) {
|
|
$node = $child->parentNode;
|
|
while ($node != null) {
|
|
if ($node->isSameNode($parent)) return true;
|
|
$node = $node->parentNode;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function getContent() {
|
|
return $this->body;
|
|
}
|
|
|
|
public function getTitle() {
|
|
return $this->title;
|
|
}
|
|
|
|
public function getAuthors() {
|
|
return $this->author;
|
|
}
|
|
|
|
public function getLanguage() {
|
|
return $this->language;
|
|
}
|
|
|
|
public function getDate() {
|
|
return $this->date;
|
|
}
|
|
|
|
public function getSiteConfig() {
|
|
return $this->config;
|
|
}
|
|
|
|
public function getNextPageUrl() {
|
|
return $this->nextPageUrl;
|
|
}
|
|
}
|
|
?>
|