diff --git a/src/controllers/components/CrawlComponent.php b/src/controllers/components/CrawlComponent.php index 041fe66cd..f4fa887b1 100644 --- a/src/controllers/components/CrawlComponent.php +++ b/src/controllers/components/CrawlComponent.php @@ -847,6 +847,8 @@ class CrawlComponent extends Component implements CrawlConstants $data['available_summarizers'] = [ self::BASIC_SUMMARIZER => tl('crawl_component_basic'), self::CENTROID_SUMMARIZER => tl('crawl_component_centroid'), + self::CENTROID_WEIGHTED_SUMMARIZER => + tl('crawl_component_centroid_weighted'), self::GRAPH_BASED_SUMMARIZER => tl('crawl_component_graph_based')]; if (!isset($seed_info["indexed_file_types"]["extensions"])) { $seed_info["indexed_file_types"]["extensions"] = @@ -997,7 +999,7 @@ class CrawlComponent extends Component implements CrawlConstants } else { $parent->updateProfileFields($data, $profile, ['IP_LINK','CACHE_LINK', 'SIMILAR_LINK', 'IN_LINK', - 'RESULT_SCORE', 'SIGNIN_LINK', 'SUBSEARCH_LINK', + 'RESULT_SCORE', 'SIGNIN_LINK', 'SUBSEARCH_LINK', 'WORD_SUGGEST']); } $weights = ['TITLE_WEIGHT' => 4, @@ -1200,7 +1202,7 @@ class CrawlComponent extends Component implements CrawlConstants foreach ($supported_processors as $supported_processor) { $parent_processor = C\NS_PROCESSORS . $processor_name; do { - if (C\NS_PROCESSORS .$supported_processor == + if (C\NS_PROCESSORS .$supported_processor == $parent_processor) { $plugin_object = $parent->plugin(lcfirst($plugin)); @@ -1730,4 +1732,4 @@ class CrawlComponent extends Component implements CrawlConstants "switchSourceType()"; return $data; } -} +} \ No newline at end of file diff --git a/src/executables/Fetcher.php b/src/executables/Fetcher.php index eb20cec01..a065e54b6 100755 --- a/src/executables/Fetcher.php +++ b/src/executables/Fetcher.php @@ -128,7 +128,7 @@ class Fetcher implements CrawlConstants */ public $plugin_processors; /** - * Hash used to keep track of whether $plugin_processors info needs to be + * Hash used to keep track of whether $plugin_processors info needs to be * changed * @var string */ @@ -241,8 +241,8 @@ class Fetcher implements CrawlConstants public $crawl_order; /** * Stores the name of the summarizer used for crawling. - * Possible values are self::BASIC, self::GRAPH_BASED_SUMMARIZER - * and self::CENTROID_SUMMARIZER + * Possible values are self::BASIC, self::GRAPH_BASED_SUMMARIZER, + * self::CENTROID_SUMMARIZER and self::CENTROID_WEIGHTED_SUMMARIZER * @var string */ public $summarizer_option; @@ -791,7 +791,8 @@ class Fetcher implements CrawlConstants $schedule_again_page[self::CRAWL_DELAY] ]; } - L\crawlLog("....reschedule count:".count($this->to_crawl_again)); + L\crawlLog("....reschedule count:". + count($this->to_crawl_again)); } L\crawlLog("....done."); } @@ -1054,7 +1055,7 @@ class Fetcher implements CrawlConstants } } } - if (L\generalIsA(C\NS_ARCHIVE . $this->arc_type . "Iterator", + if (L\generalIsA(C\NS_ARCHIVE . $this->arc_type . "Iterator", C\NS_ARCHIVE . "TextArchiveBundleIterator")) { $result_dir = C\WORK_DIRECTORY . "/schedules/" . $prefix.self::fetch_archive_iterator.$this->crawl_time; @@ -1616,7 +1617,7 @@ class Fetcher implements CrawlConstants public function processFetchPages($site_pages) { $page_processors = $this->page_processors; - L\crawlLog("Start process pages... Current Memory:" . + L\crawlLog("Start process pages... Current Memory:" . memory_get_usage()); $start_time = microtime(true); $prefix = $this->fetcher_num."-"; @@ -1703,7 +1704,7 @@ class Fetcher implements CrawlConstants } if (!$handled) { $processor = $this->pageProcessor($type); - if(!$processor) { + if (!$processor) { L\crawlLog("No page processor for mime type: ".$type); L\crawlLog("Not processing: ".$site[self::URL]); continue; @@ -1954,8 +1955,9 @@ class Fetcher implements CrawlConstants { $count = count($this->to_crawl); $count_again = count($this->to_crawl_again); - L\crawlLog("Culling noncrawlable urls after change in crawl parameters;". - " To Crawl Count: $count, To Crawl Again: $count_again"); + L\crawlLog("Culling noncrawlable urls after change in crawl ". + "parameters; To Crawl Count: $count, To Crawl Again: ". + "$count_again"); $start_time = microtime(true); $k = 0; for ($i = 0; $i < $count; $i++) { @@ -2631,7 +2633,7 @@ class Fetcher implements CrawlConstants } while(!isset($info[self::STATUS]) || $info[self::STATUS] != self::CONTINUE_STATE); L\crawlLog("Queue Server info response code: ".$info[self::STATUS]); - L\crawlLog("Queue Server's crawl time is: " . + L\crawlLog("Queue Server's crawl time is: " . $info[self::CRAWL_TIME]); L\crawlLog("Web Server peak memory usage: ". $info[self::MEMORY_USAGE]); diff --git a/src/library/CrawlConstants.php b/src/library/CrawlConstants.php index 34d51e5a4..30de80d88 100755 --- a/src/library/CrawlConstants.php +++ b/src/library/CrawlConstants.php @@ -228,4 +228,5 @@ interface CrawlConstants const MINIMUM_FETCH_LOOP_TIME = "dq"; const IMAGE_LINK = "dr"; const GRAPH_BASED_SUMMARIZER = 'ds'; -} + const CENTROID_WEIGHTED_SUMMARIZER = 'dt'; +} \ No newline at end of file diff --git a/src/library/cmsdetector/CmsBase.php b/src/library/cmsdetector/CmsBase.php new file mode 100644 index 000000000..a62c68238 --- /dev/null +++ b/src/library/cmsdetector/CmsBase.php @@ -0,0 +1,132 @@ +<?php +/** + * SeekQuarry/Yioop -- + * Open Source Pure PHP Search Engine, Crawler, and Indexer + * + * Copyright (C) 2009 - 2015 Chris Pollett chris@pollett.org + * + * LICENSE: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * END LICENSE + * + * @author Chris Pollett (chris@pollett.org) + * @license http://www.gnu.org/licenses/ GPL3 + * @link http://www.seekquarry.com/ + * @copyright 2009 - 2015 + * @filesource + */ +namespace seekquarry\yioop\library\cmsdetector; + +/** + * Class which is used to be the base for all framework detectors. It holds + * the required methods as well as some common methods. + * @author Charles Bocage (charles.bocage@sjsu.edu) + */ +class CmsBase +{ + /** + * The raw html to be used for processing. + */ + public $home_html = ""; + /** + * Method used to check for a CMS match or not. + * + * @return string True if it finds a match, otherwise false. + */ + public function check() + { + throw new Exception('Not implemented'); + } + /** + * Return the name of the CMS it is used to detect. + * + * @return string The name of the CMS it is used to detect. + */ + public function frameworkName() + { + throw new Exception('Not implemented'); + } + /** + * Return the important section of the document. Say the content + * is stored in a div tag with id of content, it should return that + * content from this method. + * + * @return string The important section of the document. + */ + public function getImportantContent() + { + throw new Exception('Not implemented'); + } + /** + * Return an array of tags found in the header of the document. + * + * @return array Array of tags found in the header of the document + */ + public function getHeadTags() + { + $result = array(); + require_once(dirname(__FILE__). "/simple_html_dom.php"); + if ($html = str_get_html($this->home_html)) { + foreach ($html->find('head') as $head) { + foreach ($head->childNodes() as $childNode) { + $result[] = $childNode; + } + } + $html->clear(); + unset($html); + } + return $result; + } + /** + * Check if a tag's name match and its value match the given regex. + * @param string $attribute_name the name of the attribute found + * @param string $attribute_name_to_match the name of the attribute to + * match to + * @param string $attribute_value_regex the regex the value should match to + * @param string $attribute_value the attribute's actual value + * + * @return boolean True if a match, otherwise false + */ + public function isTagMatch($attribute_name, $attribute_name_to_match, + $attribute_value_regex, $attribute_value) + { + $result = false; + if (strcasecmp($attribute_name, $attribute_name_to_match) == 0) { + preg_match_all($attribute_value_regex, $attribute_value, $matches); + $result = count($matches[0]) > 0 ? true : false; + } + return $result; + } + /** + * Get the contents of a document via an XPath + * @param string $query the XPath query to run + * + * @return string the content found, otherwise an empty string + */ + public function getContentByXquery($query) + { + $result = ""; + $dom = new \DOMDocument(); + if (@$dom->loadHTML($this->home_html)) { + $xpath = new \DOMXPath($dom); + $tempResult = $xpath->query($query); + if ($tempResult->length > 0) { + $result = $dom->saveHTML($tempResult->item(0)); + } + } + return $result; + } +} \ No newline at end of file diff --git a/src/library/cmsdetector/CmsDetector.php b/src/library/cmsdetector/CmsDetector.php new file mode 100644 index 000000000..2570f34f2 --- /dev/null +++ b/src/library/cmsdetector/CmsDetector.php @@ -0,0 +1,89 @@ +<?php +/** + * SeekQuarry/Yioop -- + * Open Source Pure PHP Search Engine, Crawler, and Indexer + * + * Copyright (C) 2009 - 2015 Chris Pollett chris@pollett.org + * + * LICENSE: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * END LICENSE + * + * @author Chris Pollett (chris@pollett.org) + * @license http://www.gnu.org/licenses/ GPL3 + * @link http://www.seekquarry.com/ + * @copyright 2009 - 2015 + * @filesource + */ +namespace seekquarry\yioop\library\cmsdetector; + +/** + * Class which is used to run the each detector until it finds a match + * @author Charles Bocage (charles.bocage@sjsu.edu) + */ +class CmsDetector +{ + /** + * If a framework is found, this will be populated with its composer class + * path. + */ + public $cmsClassPath = ""; + /** + * Load the detectors found in this folder. The detectors must end in + * FrameworkDetector.php. It loops through each one found until its + * check() method returns true. + * @param string $content the content to check + * + * @return string the framework name if found, otherwise UNKNOWN + */ + public function checkFromContent($content) + { + $result = "UNKNOWN"; + $namespace = "seekquarry\yioop\library\cmsdetector"; + $systems = $this->getSystems(); + foreach ($systems as $system_name) { + $full_system_name = $namespace . "\\" . $system_name; + $system = new $full_system_name(); + $system->home_html = $content; + if ($system->check()) { + $result = $system->frameworkName(); + $this->cmsClassPath = $full_system_name; + break; + } + } + return $result; + } + /** + * Get the framework detectors that are in this folder. + * + * @return array The array of detectors found in this folder. + */ + public function getSystems() + { + $result = array(); + if ($handle = opendir(dirname(__FILE__))) { + while (false !== ($entry = readdir($handle))) { + if ($entry != "." && $entry != "..") { + if (fnmatch("*FrameworkDetector.php", $entry)) { + $result[] = basename($entry, ".php"); + } + } + } + closedir($handle); + } + return $result; + } +} \ No newline at end of file diff --git a/src/library/cmsdetector/DrupalFrameworkDetector.php b/src/library/cmsdetector/DrupalFrameworkDetector.php new file mode 100644 index 000000000..bd4dfd69c --- /dev/null +++ b/src/library/cmsdetector/DrupalFrameworkDetector.php @@ -0,0 +1,120 @@ +<?php +/** + * SeekQuarry/Yioop -- + * Open Source Pure PHP Search Engine, Crawler, and Indexer + * + * Copyright (C) 2009 - 2015 Chris Pollett chris@pollett.org + * + * LICENSE: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * END LICENSE + * + * @author Charles Bocage (charles.bocage@sjsu.edu) + * @license http://www.gnu.org/licenses/ GPL3 + * @link http://www.seekquarry.com/ + * @copyright 2009 - 2015 + * @filesource + */ +namespace seekquarry\yioop\library\cmsdetector; + +use seekquarry\yioop\library\cmsdetector\CmsBase; + +class DrupalFrameworkDetector extends CmsBase +{ + /** + * Method used to check for a CMS match or not. It uses what is in the + * head tags to determine if there is a match or not. + * + * @return string True if it finds a match, otherwise false + */ + public function check() + { + return $this->checkHeadTags(); + } + /** + * Return the name of the CMS it is used to detect. + * + * @return string The name of the CMS it is used to detect. + */ + public function frameworkName() + { + return "DRUPAL"; + } + /** + * Return the important section of the document. Say the content + * is stored in a div tag with id of content, it should return that + * content from this method. It also strips out irrelavent tags that are + * sometimes contained in the subsection. + * + * @return string The important section of the document. + */ + public function getImportantContent() + { + $result = $this->home_html; + $temp_result = $this-> + getContentByXquery("//div[@class=\"entry-content\"]"); + if (!empty($temp_result)) { + $tags_to_remove = []; + foreach ($tags_to_remove as $tag_to_remove) { + $temp_content_to_remove = $this-> + getContentByXquery($tag_to_remove); + $temp_result = + str_replace($temp_content_to_remove, "", $temp_result); + } + } + return empty($temp_result) ? $result : $temp_result; + } + /** + * Check the header tags to see if we find a rel tag that is a stylesheet + * and has wp-content or wp-includes in its value. There is code to check + * that it has scripts in there too but not all Wordpress sites have them. + * + * @return boolean True if there is more than one stylesheet found, + * otherwise false. + */ + private function checkHeadTags() + { + $matches = 0; + $rel_tag_match = 0; + $rel_tag_match_minimum = 1; + $script_tag_match = 0; + $script_tag_match_minimum = 0; + $head_tags_regex = + "/sites\/(?:default|all)\/(?:themes|modules|files)\//iu"; + $head_tags = $this->getHeadTags(); + if ($head_tags) { + foreach ($head_tags as $head_tag) { + if (@$relType = $head_tag->attr['rel']) { + if (@$attributeSubValue = $head_tag->attr['href']) { + $tempResult = $this->isTagMatch($relType, + "stylesheet", $head_tags_regex, + $attributeSubValue) ? 1 : 0; + $rel_tag_match = $rel_tag_match + $tempResult; + } + } elseif (@$scriptType = $head_tag->attr['type']) { + if (@$attributeSubValue = $head_tag->attr['src']) { + $tempResult = $this->isTagMatch($scriptType, + "text/javascript", $head_tags_regex, + $attributeSubValue) ? 1 : 0; + $script_tag_match = $script_tag_match + $tempResult; + } + } + } + } + return $rel_tag_match >= $rel_tag_match_minimum && + $script_tag_match >= $script_tag_match_minimum; + } +} diff --git a/src/library/cmsdetector/WordpressFrameworkDetector.php b/src/library/cmsdetector/WordpressFrameworkDetector.php new file mode 100644 index 000000000..e4b0e351a --- /dev/null +++ b/src/library/cmsdetector/WordpressFrameworkDetector.php @@ -0,0 +1,122 @@ +<?php +/** + * SeekQuarry/Yioop -- + * Open Source Pure PHP Search Engine, Crawler, and Indexer + * + * Copyright (C) 2009 - 2015 Chris Pollett chris@pollett.org + * + * LICENSE: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * END LICENSE + * + * @author Charles Bocage (charles.bocage@sjsu.edu) + * @license http://www.gnu.org/licenses/ GPL3 + * @link http://www.seekquarry.com/ + * @copyright 2009 - 2015 + * @filesource + */ +namespace seekquarry\yioop\library\cmsdetector; + +use seekquarry\yioop\library\cmsdetector\CmsBase; + +class WordpressFrameworkDetector extends CmsBase +{ + /** + * Method used to check for a CMS match or not. It uses what is in the + * head tags to determine if there is a match or not. + * + * @return string True if it finds a match, otherwise false + */ + public function check() + { + return $this->checkHeadTags(); + } + /** + * Return the name of the CMS it is used to detect. + * + * @return string The name of the CMS it is used to detect. + */ + public function frameworkName() + { + return "WORDPRESS"; + } + /** + * Return the important section of the document. Say the content + * is stored in a div tag with id of content, it should return that + * content from this method. It also strips out irrelavent tags that are + * sometimes contained in the subsection. + * + * @return string The important section of the document. + */ + public function getImportantContent() + { + $result = $this->home_html; + $temp_result = $this->getContentByXquery("//div[@id=\"content\"]"); + if (!empty($temp_result)) { + $tags_to_remove = ["//div[@id=\"comments\"]", + "//div[@id=\"respond\"]", + "//div[@class=\"bottomcontainerBox\"]", + "//ul[@class=\"post-by\"]", + "//div[@class=\"entry-meta clear\"]"]; + foreach ($tags_to_remove as $tag_to_remove) { + $temp_content_to_remove = + $this->getContentByXquery($tag_to_remove); + $temp_result = + str_replace($temp_content_to_remove, "", $temp_result); + } + } + return empty($temp_result) ? $result : $temp_result; + } + /** + * Check the header tags to see if we find a rel tag that is a stylesheet + * and has wp-content or wp-includes in its value. There is code to check + * that it has scripts in there too but not all Wordpress sites have them. + * + * @return boolean True if there is more than one stylesheet found, + * otherwise false. + */ + private function checkHeadTags() + { + $matches = 0; + $rel_tag_match = 0; + $rel_tag_match_minimum = 1; + $script_tag_match = 0; + $script_tag_match_minimum = 0; + $head_tags_regex = "/wp-(?:content|includes)/iu"; + $head_tags = $this->getHeadTags(); + if ($head_tags) { + foreach ($head_tags as $head_tag) { + if (@$relType = $head_tag->attr['rel']) { + if (@$attributeSubValue = $head_tag->attr['href']) { + $tempResult = $this->isTagMatch($relType, + "stylesheet", $head_tags_regex, + $attributeSubValue) ? 1 : 0; + $rel_tag_match = $rel_tag_match + $tempResult; + } + } elseif (@$scriptType = $head_tag->attr['type']) { + if (@$attributeSubValue = $head_tag->attr['src']) { + $tempResult = $this->isTagMatch($scriptType, + "text/javascript", $head_tags_regex, + $attributeSubValue) ? 1 : 0; + $script_tag_match = $script_tag_match + $tempResult; + } + } + } + } + return $rel_tag_match >= $rel_tag_match_minimum && + $script_tag_match >= $script_tag_match_minimum; + } +} diff --git a/src/library/cmsdetector/simple_html_dom.php b/src/library/cmsdetector/simple_html_dom.php new file mode 100644 index 000000000..941f9ffa1 --- /dev/null +++ b/src/library/cmsdetector/simple_html_dom.php @@ -0,0 +1,1920 @@ +<?php +/** + * Website: http://sourceforge.net/projects/simplehtmldom/ + * Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/) + * Contributions by: + * Yousuke Kumakura (Attribute filters) + * Vadim Voituk (Negative indexes supports of "find" method) + * Antcs (Constructor with automatically load contents either text or + * file/url) + * + * all affected sections have comments starting with "PaperG" + * + * Paperg - Added case insensitive testing of the value of the selector. + * Paperg - Added tag_start for the starting index of tags - NOTE: This works + * but not accurately. + * This tag_start gets counted AFTER \r\n have been crushed out, and after + * the remove_noice calls so it will not reflect the REAL position of the tag + * in the source, + * it will almost always be smaller by some amount. + * We use this to determine how far into the file the tag in question is. + * This "percentage will never be accurate as the $dom->size is the "real" + * number of bytes the dom was created from. + * but for most purposes, it's a really good estimation. + * Paperg - Added the forceTagsClosed to the dom constructor. Forcing tags + * closed is great for malformed html, but it CAN lead to parsing errors. + * Allow the user to tell us how much they trust the html. + * Paperg add the text and plaintext to the selectors for the find syntax. + * plaintext implies text in the innertext of a node. text implies that the + * tag is a text node. + * This allows for us to find tags based on the text they contain. + * Create find_ancestor_tag to see if a tag is - at any level - inside of + * another specific tag. + * Paperg: added parse_charset so that we know about the character set of the + * source document. + * NOTE: If the user's system has a routine called + * get_last_retrieve_url_contents_content_type availalbe, we will assume it's + * returning the content-type header from the + * last transfer or curl_exec, and we will parse that and use it in preference + * to any other method of charset detection. + * + * Found infinite loop in the case of broken html in restore_noise. Rewrote to + * protect from that. + * PaperG (John Schlick) Added get_display_size for "IMG" tags. + * + * Licensed under The MIT License + * Redistributions of files must retain the above copyright notice. + * + * @author S.C. Chen <me578022@gmail.com> + * @author John Schlick + * @author Rus Carroll + * @version 1.5 ($Rev: 196 $) + * @package PlaceLocalInclude + * @subpackage simple_html_dom + */ + +/** + * All of the Defines for the classes below. + * @author S.C. Chen <me578022@gmail.com> + */ +define('HDOM_TYPE_ELEMENT', 1); +define('HDOM_TYPE_COMMENT', 2); +define('HDOM_TYPE_TEXT', 3); +define('HDOM_TYPE_ENDTAG', 4); +define('HDOM_TYPE_ROOT', 5); +define('HDOM_TYPE_UNKNOWN', 6); +define('HDOM_QUOTE_DOUBLE', 0); +define('HDOM_QUOTE_SINGLE', 1); +define('HDOM_QUOTE_NO', 3); +define('HDOM_INFO_BEGIN', 0); +define('HDOM_INFO_END', 1); +define('HDOM_INFO_QUOTE', 2); +define('HDOM_INFO_SPACE', 3); +define('HDOM_INFO_TEXT', 4); +define('HDOM_INFO_INNER', 5); +define('HDOM_INFO_OUTER', 6); +define('HDOM_INFO_ENDSPACE',7); +define('DEFAULT_TARGET_CHARSET', 'UTF-8'); +define('DEFAULT_BR_TEXT', "\r\n"); +define('DEFAULT_SPAN_TEXT', " "); +define('MAX_FILE_SIZE', 600000); +// helper functions +// ----------------------------------------------------------------------------- +// get html dom from file +// $maxlen is defined in the code as PHP_STREAM_COPY_ALL which is defined as -1. +function file_get_html($url, $use_include_path = false, $context=null, + $offset = -1, $maxLen=-1, $lowercase = true, $forceTagsClosed=true, + $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, + $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) +{ + // We DO force the tags to be terminated. + $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, + $target_charset, $stripRN, $defaultBRText, $defaultSpanText); + // For sourceforge users: uncomment the next line and comment the + // retreive_url_contents line 2 lines down if it is not already done. + $contents = file_get_contents($url, $use_include_path, $context, $offset); + // Paperg - use our own mechanism for getting the contents as we want to + //control the timeout. + //$contents = retrieve_url_contents($url); + if (empty($contents) || strlen($contents) > MAX_FILE_SIZE) + { + return false; + } + // The second parameter can force the selectors to all be lowercase. + $dom->load($contents, $lowercase, $stripRN); + return $dom; +} + +// get html dom from string +function str_get_html($str, $lowercase=true, $forceTagsClosed=true, + $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, + $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) +{ + $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, + $target_charset, $stripRN, $defaultBRText, $defaultSpanText); + if (empty($str) || strlen($str) > MAX_FILE_SIZE) + { + $dom->clear(); + return false; + } + $dom->load($str, $lowercase, $stripRN); + return $dom; +} + +// dump html dom tree +function dump_html_tree($node, $show_attr=true, $deep=0) +{ + $node->dump($node); +} + + +/** + * simple html dom node + * PaperG - added ability for "find" routine to lowercase the value of the + * selector. + * PaperG - added $tag_start to track the start position of the tag in the + * total byte index + * + * @package PlaceLocalInclude + */ +class simple_html_dom_node +{ + public $nodetype = HDOM_TYPE_TEXT; + public $tag = 'text'; + public $attr = array(); + public $children = array(); + public $nodes = array(); + public $parent = null; + // The "info" array - see HDOM_INFO_... for what each element contains. + public $_ = array(); + public $tag_start = 0; + private $dom = null; + + function __construct($dom) + { + $this->dom = $dom; + $dom->nodes[] = $this; + } + + function __destruct() + { + $this->clear(); + } + + function __toString() + { + return $this->outertext(); + } + + // clean up memory due to php5 circular references memory leak... + function clear() + { + $this->dom = null; + $this->nodes = null; + $this->parent = null; + $this->children = null; + } + + // dump node's tree + function dump($show_attr=true, $deep=0) + { + $lead = str_repeat(' ', $deep); + + echo $lead.$this->tag; + if ($show_attr && count($this->attr)>0) + { + echo '('; + foreach ($this->attr as $k=>$v) + echo "[$k]=>\"".$this->$k.'", '; + echo ')'; + } + echo "\n"; + + if ($this->nodes) + { + foreach ($this->nodes as $c) + { + $c->dump($show_attr, $deep+1); + } + } + } + + + // Debugging function to dump a single dom node with a bunch of + //information about it. + function dump_node($echo=true) + { + + $string = $this->tag; + if (count($this->attr)>0) + { + $string .= '('; + foreach ($this->attr as $k=>$v) + { + $string .= "[$k]=>\"".$this->$k.'", '; + } + $string .= ')'; + } + if (count($this->_)>0) + { + $string .= ' $_ ('; + foreach ($this->_ as $k=>$v) + { + if (is_array($v)) + { + $string .= "[$k]=>("; + foreach ($v as $k2=>$v2) + { + $string .= "[$k2]=>\"".$v2.'", '; + } + $string .= ")"; + } else { + $string .= "[$k]=>\"".$v.'", '; + } + } + $string .= ")"; + } + + if (isset($this->text)) + { + $string .= " text: (" . $this->text . ")"; + } + + $string .= " HDOM_INNER_INFO: '"; + if (isset($node->_[HDOM_INFO_INNER])) + { + $string .= $node->_[HDOM_INFO_INNER] . "'"; + } + else + { + $string .= ' NULL '; + } + + $string .= " children: " . count($this->children); + $string .= " nodes: " . count($this->nodes); + $string .= " tag_start: " . $this->tag_start; + $string .= "\n"; + + if ($echo) + { + echo $string; + return; + } + else + { + return $string; + } + } + + // returns the parent of node + // If a node is passed in, it will reset the parent of the current node to + // that one. + function parent($parent=null) + { + // I am SURE that this doesn't work properly. + // It fails to unset the current node from it's current parents nodes + // or children list first. + if ($parent !== null) + { + $this->parent = $parent; + $this->parent->nodes[] = $this; + $this->parent->children[] = $this; + } + + return $this->parent; + } + + // verify that node has children + function has_child() + { + return !empty($this->children); + } + + // returns children of node + function children($idx=-1) + { + if ($idx===-1) + { + return $this->children; + } + if (isset($this->children[$idx])) return $this->children[$idx]; + return null; + } + + // returns the first child of node + function first_child() + { + if (count($this->children)>0) + { + return $this->children[0]; + } + return null; + } + + // returns the last child of node + function last_child() + { + if (($count=count($this->children))>0) + { + return $this->children[$count-1]; + } + return null; + } + + // returns the next sibling of node + function next_sibling() + { + if ($this->parent===null) + { + return null; + } + + $idx = 0; + $count = count($this->parent->children); + while ($idx<$count && $this!==$this->parent->children[$idx]) + { + ++$idx; + } + if (++$idx>=$count) + { + return null; + } + return $this->parent->children[$idx]; + } + + // returns the previous sibling of node + function prev_sibling() + { + if ($this->parent===null) return null; + $idx = 0; + $count = count($this->parent->children); + while ($idx<$count && $this!==$this->parent->children[$idx]) + ++$idx; + if (--$idx<0) return null; + return $this->parent->children[$idx]; + } + + // function to locate a specific ancestor tag in the path to the root. + function find_ancestor_tag($tag) + { + global $debugObject; + if (is_object($debugObject)) { $debugObject->debugLogEntry(1); } + + // Start by including ourselves in the comparison. + $returnDom = $this; + + while (!is_null($returnDom)) + { + if (is_object($debugObject)) { $debugObject->debugLog(2, + "Current tag is: " . $returnDom->tag); } + + if ($returnDom->tag == $tag) + { + break; + } + $returnDom = $returnDom->parent; + } + return $returnDom; + } + + // get dom node's inner html + function innertext() + { + if (isset($this->_[HDOM_INFO_INNER])) + return $this->_[HDOM_INFO_INNER]; + if (isset($this->_[HDOM_INFO_TEXT])) + return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + + $ret = ''; + foreach ($this->nodes as $n) + $ret .= $n->outertext(); + return $ret; + } + + // get dom node's outer text (with tag) + function outertext() + { + global $debugObject; + if (is_object($debugObject)) + { + $text = ''; + if ($this->tag == 'text') + { + if (!empty($this->text)) + { + $text = " with text: " . $this->text; + } + } + $debugObject->debugLog(1, 'Innertext of tag: ' . + $this->tag . $text); + } + + if ($this->tag==='root') return $this->innertext(); + + // trigger callback + if ($this->dom && $this->dom->callback!==null) + { + call_user_func_array($this->dom->callback, array($this)); + } + + if (isset($this->_[HDOM_INFO_OUTER])) + return $this->_[HDOM_INFO_OUTER]; + if (isset($this->_[HDOM_INFO_TEXT])) + return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + + // render begin tag + if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]) + { + $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup(); + } else { + $ret = ""; + } + + // render inner text + if (isset($this->_[HDOM_INFO_INNER])) + { + // If it's a br tag... don't return the HDOM_INNER_INFO that we + // may or may not have added. + if ($this->tag != "br") + { + $ret .= $this->_[HDOM_INFO_INNER]; + } + } else { + if ($this->nodes) + { + foreach ($this->nodes as $n) + { + $ret .= $this->convert_text($n->outertext()); + } + } + } + + // render end tag + if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0) + $ret .= '</'.$this->tag.'>'; + return $ret; + } + + // get dom node's plain text + function text() + { + if (isset($this->_[HDOM_INFO_INNER])) + return $this->_[HDOM_INFO_INNER]; + switch ($this->nodetype) + { + case HDOM_TYPE_TEXT: + return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + case HDOM_TYPE_COMMENT: return ''; + case HDOM_TYPE_UNKNOWN: return ''; + } + if (strcasecmp($this->tag, 'script')===0) return ''; + if (strcasecmp($this->tag, 'style')===0) return ''; + + $ret = ''; + // In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed + // for some span tags, and some p tags) $this->nodes is set to NULL. + // NOTE: This indicates that there is a problem where it's set to NULL + // without a clear happening. + // WHY is this happening? + if (!is_null($this->nodes)) + { + foreach ($this->nodes as $n) + { + $ret .= $this->convert_text($n->text()); + } + + // If this node is a span... add a space at the end of it so + // multiple spans don't run into each other. This is plaintext + // after all. + if ($this->tag == "span") + { + $ret .= $this->dom->default_span_text; + } + + + } + return $ret; + } + + function xmltext() + { + $ret = $this->innertext(); + $ret = str_ireplace('<![CDATA[', '', $ret); + $ret = str_replace(']]>', '', $ret); + return $ret; + } + + // build node's text with tag + function makeup() + { + // text, comment, unknown + if (isset($this->_[HDOM_INFO_TEXT])) + return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]); + + $ret = '<'.$this->tag; + $i = -1; + + foreach ($this->attr as $key=>$val) + { + ++$i; + + // skip removed attribute + if ($val===null || $val===false) + continue; + + $ret .= $this->_[HDOM_INFO_SPACE][$i][0]; + //no value attr: nowrap, checked selected... + if ($val===true) + $ret .= $key; + else { + switch ($this->_[HDOM_INFO_QUOTE][$i]) + { + case HDOM_QUOTE_DOUBLE: $quote = '"'; break; + case HDOM_QUOTE_SINGLE: $quote = '\''; break; + default: $quote = ''; + } + $ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='. + $this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote; + } + } + $ret = $this->dom->restore_noise($ret); + return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>'; + } + + // find elements by css selector + //PaperG - added ability for find to lowercase the value of the selector. + function find($selector, $idx=null, $lowercase=false) + { + $selectors = $this->parse_selector($selector); + if (($count=count($selectors))===0) return array(); + $found_keys = array(); + + // find each selector + for ($c=0; $c<$count; ++$c) + { + // The change on the below line was documented on the sourceforge + // code tracker id 2788009 + // used to be: if (($levle=count($selectors[0]))===0) + // return array(); + if (($levle=count($selectors[$c]))===0) return array(); + if (!isset($this->_[HDOM_INFO_BEGIN])) return array(); + + $head = array($this->_[HDOM_INFO_BEGIN]=>1); + + // handle descendant selectors, no recursive! + for ($l=0; $l<$levle; ++$l) + { + $ret = array(); + foreach ($head as $k=>$v) + { + $n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k]; + //PaperG - Pass this optional parameter on to the seek + //function. + $n->seek($selectors[$c][$l], $ret, $lowercase); + } + $head = $ret; + } + + foreach ($head as $k=>$v) + { + if (!isset($found_keys[$k])) + $found_keys[$k] = 1; + } + } + + // sort keys + ksort($found_keys); + + $found = array(); + foreach ($found_keys as $k=>$v) + $found[] = $this->dom->nodes[$k]; + + // return nth-element or array + if (is_null($idx)) return $found; + else if ($idx<0) $idx = count($found) + $idx; + return (isset($found[$idx])) ? $found[$idx] : null; + } + + // seek for given conditions + // PaperG - added parameter to allow for case insensitive testing of the + // value of a selector. + protected function seek($selector, &$ret, $lowercase=false) + { + global $debugObject; + if (is_object($debugObject)) { $debugObject->debugLogEntry(1); } + + list($tag, $key, $val, $exp, $no_key) = $selector; + + // xpath index + if ($tag && $key && is_numeric($key)) + { + $count = 0; + foreach ($this->children as $c) + { + if ($tag==='*' || $tag===$c->tag) { + if (++$count==$key) { + $ret[$c->_[HDOM_INFO_BEGIN]] = 1; + return; + } + } + } + return; + } + + $end = (!empty($this->_[HDOM_INFO_END])) + ? $this->_[HDOM_INFO_END] : 0; + if ($end==0) { + $parent = $this->parent; + while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) { + $end -= 1; + $parent = $parent->parent; + } + $end += $parent->_[HDOM_INFO_END]; + } + + for ($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) { + $node = $this->dom->nodes[$i]; + + $pass = true; + + if ($tag==='*' && !$key) { + if (in_array($node, $this->children, true)) + $ret[$i] = 1; + continue; + } + + // compare tag + if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;} + // compare key + if ($pass && $key) { + if ($no_key) { + if (isset($node->attr[$key])) $pass=false; + } else { + if (($key != "plaintext") && !isset($node->attr[$key])) + $pass=false; + } + } + // compare value + if ($pass && $key && $val && $val!=='*') { + // If they have told us that this is a "plaintext" search then + // we want the plaintext of the node - right? + if ($key == "plaintext") { + // $node->plaintext actually returns $node->text(); + $nodeKeyValue = $node->text(); + } else { + // this is a normal search, we want the value of that + // attribute of the tag. + $nodeKeyValue = $node->attr[$key]; + } + if (is_object($debugObject)) {$debugObject->debugLog(2, + "testing node: " . $node->tag . " for attribute: " . + $key . $exp . $val . " where nodes value is: " . + $nodeKeyValue);} + + //PaperG - If lowercase is set, do a case insensitive test of + //the value of the selector. + if ($lowercase) { + $check = $this->match($exp, strtolower($val), + strtolower($nodeKeyValue)); + } else { + $check = $this->match($exp, $val, $nodeKeyValue); + } + if (is_object($debugObject)) {$debugObject->debugLog(2, + "after match: " . ($check ? "true" : "false"));} + + // handle multiple class + if (!$check && strcasecmp($key, 'class')===0) { + foreach (explode(' ',$node->attr[$key]) as $k) { + // Without this, there were cases where leading, + // trailing, or double spaces lead to our comparing + //blanks - bad form. + if (!empty($k)) { + if ($lowercase) { + $check = $this->match($exp, strtolower($val), + strtolower($k)); + } else { + $check = $this->match($exp, $val, $k); + } + if ($check) break; + } + } + } + if (!$check) $pass = false; + } + if ($pass) $ret[$i] = 1; + unset($node); + } + // It's passed by reference so this is actually what this function + // returns. + if (is_object($debugObject)) {$debugObject->debugLog(1, + "EXIT - ret: ", $ret);} + } + + protected function match($exp, $pattern, $value) { + global $debugObject; + if (is_object($debugObject)) {$debugObject->debugLogEntry(1);} + + switch ($exp) { + case '=': + return ($value===$pattern); + case '!=': + return ($value!==$pattern); + case '^=': + return preg_match("/^".preg_quote($pattern,'/')."/", $value); + case '$=': + return preg_match("/".preg_quote($pattern,'/')."$/", $value); + case '*=': + if ($pattern[0]=='/') { + return preg_match($pattern, $value); + } + return preg_match("/".$pattern."/i", $value); + } + return false; + } + + protected function parse_selector($selector_string) { + global $debugObject; + if (is_object($debugObject)) {$debugObject->debugLogEntry(1);} + + // pattern of CSS selectors, modified from mootools + // Paperg: Add the colon to the attrbute, so that it properly finds + // <tag attr:ibute="something" > like google does. + // Note: if you try to look at this attribute, yo MUST use + // getAttribute since $dom->x:y will fail the php syntax check. +// Notice the \[ starting the attbute? and the @? following? This implies + // that an attribute can begin with an @ sign that is not captured. +// This implies that an html attribute specifier may start with an @ sign + //that is NOT captured by the expression. +// farther study is required to determine of this should be documented or + //removed. +// $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+) + //(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is"; + $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-:]+)". + "(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is"; + preg_match_all($pattern, trim($selector_string).' ', $matches, + PREG_SET_ORDER); + if (is_object($debugObject)) {$debugObject->debugLog(2, + "Matches Array: ", $matches);} + + $selectors = array(); + $result = array(); + //print_r($matches); + + foreach ($matches as $m) { + $m[0] = trim($m[0]); + if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue; + // for browser generated xpath + if ($m[1]==='tbody') continue; + + list($tag, $key, $val, $exp, $no_key) = + array($m[1], null, null, '=', false); + if (!empty($m[2])) {$key='id'; $val=$m[2];} + if (!empty($m[3])) {$key='class'; $val=$m[3];} + if (!empty($m[4])) {$key=$m[4];} + if (!empty($m[5])) {$exp=$m[5];} + if (!empty($m[6])) {$val=$m[6];} + + // convert to lowercase + if ($this->dom->lowercase) + {$tag=strtolower($tag); $key=strtolower($key);} + //elements that do NOT have the specified attribute + if (isset($key[0]) && $key[0]==='!') + {$key=substr($key, 1); $no_key=true;} + + $result[] = array($tag, $key, $val, $exp, $no_key); + if (trim($m[7])===',') { + $selectors[] = $result; + $result = array(); + } + } + if (count($result)>0) + $selectors[] = $result; + return $selectors; + } + + function __get($name) { + if (isset($this->attr[$name])) + { + return $this->convert_text($this->attr[$name]); + } + switch ($name) { + case 'outertext': return $this->outertext(); + case 'innertext': return $this->innertext(); + case 'plaintext': return $this->text(); + case 'xmltext': return $this->xmltext(); + default: return array_key_exists($name, $this->attr); + } + } + + function __set($name, $value) { + switch ($name) { + case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value; + case 'innertext': + if (isset($this->_[HDOM_INFO_TEXT])) + return $this->_[HDOM_INFO_TEXT] = $value; + return $this->_[HDOM_INFO_INNER] = $value; + } + if (!isset($this->attr[$name])) { + $this->_[HDOM_INFO_SPACE][] = array(' ', '', ''); + $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE; + } + $this->attr[$name] = $value; + } + + function __isset($name) { + switch ($name) { + case 'outertext': return true; + case 'innertext': return true; + case 'plaintext': return true; + } + //no value attr: nowrap, checked selected... + return (array_key_exists($name, $this->attr)) + ? true : isset($this->attr[$name]); + } + + function __unset($name) { + if (isset($this->attr[$name])) + unset($this->attr[$name]); + } + + // PaperG - Function to convert the text from one character set to another + // if the two sets are not the same. + function convert_text($text) + { + global $debugObject; + if (is_object($debugObject)) {$debugObject->debugLogEntry(1);} + + $converted_text = $text; + + $sourceCharset = ""; + $targetCharset = ""; + + if ($this->dom) + { + $sourceCharset = strtoupper($this->dom->_charset); + $targetCharset = strtoupper($this->dom->_target_charset); + } + if (is_object($debugObject)) {$debugObject->debugLog(3, + "source charset: " . $sourceCharset . " target charaset: " . + $targetCharset);} + + if (!empty($sourceCharset) && !empty($targetCharset) && + (strcasecmp($sourceCharset, $targetCharset) != 0)) + { + // Check if the reported encoding could have been incorrect and + // the text is actually already UTF-8 + if ((strcasecmp($targetCharset, 'UTF-8') == 0) && + ($this->is_utf8($text))) + { + $converted_text = $text; + } + else + { + $converted_text = iconv($sourceCharset, $targetCharset, + $text); + } + } + + // Lets make sure that we don't have that silly BOM issue with any of + // the utf-8 text we output. + if ($targetCharset == 'UTF-8') + { + if (substr($converted_text, 0, 3) == "\xef\xbb\xbf") + { + $converted_text = substr($converted_text, 3); + } + if (substr($converted_text, -3) == "\xef\xbb\xbf") + { + $converted_text = substr($converted_text, 0, -3); + } + } + + return $converted_text; + } + + /** + * Returns true if $string is valid UTF-8 and false otherwise. + * + * @param mixed $str String to be tested + * @return boolean + */ + static function is_utf8($str) + { + $c=0; $b=0; + $bits=0; + $len=strlen($str); + for ($i=0; $i<$len; $i++) + { + $c=ord($str[$i]); + if ($c > 128) + { + if (($c >= 254)) return false; + elseif ($c >= 252) $bits=6; + elseif ($c >= 248) $bits=5; + elseif ($c >= 240) $bits=4; + elseif ($c >= 224) $bits=3; + elseif ($c >= 192) $bits=2; + else return false; + if (($i+$bits) > $len) return false; + while($bits > 1) + { + $i++; + $b=ord($str[$i]); + if ($b < 128 || $b > 191) return false; + $bits--; + } + } + } + return true; + } + /* + function is_utf8($string) + { + //this is buggy + return (utf8_encode(utf8_decode($string)) == $string); + } + */ + + /** + * Function to try a few tricks to determine the displayed size of an img + * on the page. + * NOTE: This will ONLY work on an IMG tag. Returns FALSE on all other tag + * types. + * + * @author John Schlick + * @version April 19 2012 + * @return array an array containing the 'height' and 'width' of the image + * on the page or -1 if we can't figure it out. + */ + function get_display_size() + { + global $debugObject; + + $width = -1; + $height = -1; + + if ($this->tag !== 'img') + { + return false; + } + + // See if there is aheight or width attribute in the tag itself. + if (isset($this->attr['width'])) + { + $width = $this->attr['width']; + } + + if (isset($this->attr['height'])) + { + $height = $this->attr['height']; + } + + // Now look for an inline style. + if (isset($this->attr['style'])) + { + // Thanks to user gnarf from stackoverflow for this regular + // expression. + $attributes = array(); + preg_match_all("/([\w-]+)\s*:\s*([^;]+)\s*;?/", + $this->attr['style'], $matches, PREG_SET_ORDER); + foreach ($matches as $match) { + $attributes[$match[1]] = $match[2]; + } + + // If there is a width in the style attributes: + if (isset($attributes['width']) && $width == -1) + { + // check that the last two characters are px (pixels) + if (strtolower(substr($attributes['width'], -2)) == 'px') + { + $proposed_width = substr($attributes['width'], 0, -2); + // Now make sure that it's an integer and not something + // stupid. + if (filter_var($proposed_width, FILTER_VALIDATE_INT)) + { + $width = $proposed_width; + } + } + } + + // If there is a width in the style attributes: + if (isset($attributes['height']) && $height == -1) + { + // check that the last two characters are px (pixels) + if (strtolower(substr($attributes['height'], -2)) == 'px') + { + $proposed_height = substr($attributes['height'], 0, -2); + // Now make sure that it's an integer and not something + // stupid. + if (filter_var($proposed_height, FILTER_VALIDATE_INT)) + { + $height = $proposed_height; + } + } + } + + } + + // Future enhancement: + // Look in the tag to see if there is a class or id specified that has + // a height or width attribute to it. + + // Far future enhancement + // Look at all the parent tags of this image to see if they specify a + // class or id that has an img selector that specifies a height or width + // Note that in this case, the class or id will have the img + // subselector for it to apply to the image. + + // ridiculously far future development + // If the class or id is specified in a SEPARATE css file thats not on + // the page, go get it and do what we were just doing for the ones on + // the page. + + $result = array('height' => $height, + 'width' => $width); + return $result; + } + + // camel naming conventions + function getAllAttributes() {return $this->attr;} + function getAttribute($name) {return $this->__get($name);} + function setAttribute($name, $value) {$this->__set($name, $value);} + function hasAttribute($name) {return $this->__isset($name);} + function removeAttribute($name) {$this->__set($name, null);} + function getElementById($id) {return $this->find("#$id", 0);} + function getElementsById($id, $idx=null) {return $this->find("#$id", + $idx);} + function getElementByTagName($name) {return $this->find($name, 0);} + function getElementsByTagName($name, $idx=null) {return $this->find($name, + $idx);} + function parentNode() {return $this->parent();} + function childNodes($idx=-1) {return $this->children($idx);} + function firstChild() {return $this->first_child();} + function lastChild() {return $this->last_child();} + function nextSibling() {return $this->next_sibling();} + function previousSibling() {return $this->prev_sibling();} + function hasChildNodes() {return $this->has_child();} + function nodeName() {return $this->tag;} + function appendChild($node) {$node->parent($this); return $node;} + +} + +/** + * simple html dom parser + * Paperg - in the find routine: allow us to specify that we want case + * insensitive testing of the value of the selector. + * Paperg - change $size from protected to public so we can easily access it + * Paperg - added ForceTagsClosed in the constructor which tells us whether + * we trust the html or not. Default is to NOT trust it. + * + * @package PlaceLocalInclude + */ +class simple_html_dom +{ + public $root = null; + public $nodes = array(); + public $callback = null; + public $lowercase = false; + // Used to keep track of how large the text was when we started. + public $original_size; + public $size; + protected $pos; + protected $doc; + protected $char; + protected $cursor; + protected $parent; + protected $noise = array(); + protected $token_blank = " \t\r\n"; + protected $token_equal = ' =/>'; + protected $token_slash = " />\r\n\t"; + protected $token_attr = ' >'; + // Note that this is referenced by a child node, and so it needs to be + // public for that node to see this information. + public $_charset = ''; + public $_target_charset = ''; + protected $default_br_text = ""; + public $default_span_text = ""; + + // use isset instead of in_array, performance boost about 30%... + protected $self_closing_tags = array('img'=>1, 'br'=>1, 'input'=>1, + 'meta'=>1, 'link'=>1, 'hr'=>1, 'base'=>1, 'embed'=>1, 'spacer'=>1); + protected $block_tags = array('root'=>1, 'body'=>1, 'form'=>1, 'div'=>1, + 'span'=>1, 'table'=>1); + // Known sourceforge issue #2977341 + // B tags that are not closed cause us to return everything to the end of + // the document. + protected $optional_closing_tags = array( + 'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1), + 'th'=>array('th'=>1), + 'td'=>array('td'=>1), + 'li'=>array('li'=>1), + 'dt'=>array('dt'=>1, 'dd'=>1), + 'dd'=>array('dd'=>1, 'dt'=>1), + 'dl'=>array('dd'=>1, 'dt'=>1), + 'p'=>array('p'=>1), + 'nobr'=>array('nobr'=>1), + 'b'=>array('b'=>1), + 'option'=>array('option'=>1), + ); + + function __construct($str=null, $lowercase=true, $forceTagsClosed=true, + $target_charset=DEFAULT_TARGET_CHARSET, $stripRN=true, + $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) + { + if ($str) + { + if (preg_match("/^http:\/\//i",$str) || is_file($str)) + { + $this->load_file($str); + } + else + { + $this->load($str, $lowercase, $stripRN, $defaultBRText, + $defaultSpanText); + } + } + // Forcing tags to be closed implies that we don't trust the html, but + // it can lead to parsing errors if we SHOULD trust the html. + if (!$forceTagsClosed) { + $this->optional_closing_array=array(); + } + $this->_target_charset = $target_charset; + } + + function __destruct() + { + $this->clear(); + } + + // load html from string + function load($str, $lowercase=true, $stripRN=true, + $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) + { + global $debugObject; + + // prepare + $this->prepare($str, $lowercase, $stripRN, $defaultBRText, + $defaultSpanText); + // strip out comments + $this->remove_noise("'<!--(.*?)-->'is"); + // strip out cdata + $this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true); + // Per sourceforge http://sourceforge.net/tracker/?func=detail& + //aid=2949097&group_id=218559&atid=1044037 + // Script tags removal now preceeds style tag removal. + // strip out <script> tags + $this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is"); + $this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is"); + // strip out <style> tags + $this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is"); + $this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is"); + // strip out preformatted tags + $this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is"); + // strip out server side scripts + $this->remove_noise("'(<\?)(.*?)(\?>)'s", true); + // strip smarty scripts + $this->remove_noise("'(\{\w)(.*?)(\})'s", true); + + // parsing + while ($this->parse()); + // end + $this->root->_[HDOM_INFO_END] = $this->cursor; + $this->parse_charset(); + + // make load function chainable + return $this; + + } + + // load html from file + function load_file() + { + $args = func_get_args(); + $this->load(call_user_func_array('file_get_contents', $args), true); + // Throw an error if we can't properly load the dom. + if (($error=error_get_last())!==null) { + $this->clear(); + return false; + } + } + + // set callback function + function set_callback($function_name) + { + $this->callback = $function_name; + } + + // remove callback function + function remove_callback() + { + $this->callback = null; + } + + // save dom as string + function save($filepath='') + { + $ret = $this->root->innertext(); + if ($filepath!=='') file_put_contents($filepath, $ret, LOCK_EX); + return $ret; + } + + // find dom node by css selector + // Paperg - allow us to specify that we want case insensitive testing of + // the value of the selector. + function find($selector, $idx=null, $lowercase=false) + { + return $this->root->find($selector, $idx, $lowercase); + } + + // clean up memory due to php5 circular references memory leak... + function clear() + { + foreach ($this->nodes as $n) {$n->clear(); $n = null;} + // This add next line is documented in the sourceforge repository. + // 2977248 as a fix for ongoing memory leaks that occur even with + // the use of clear. + if (isset($this->children)) + foreach ($this->children as $n) {$n->clear(); $n = null;} + if (isset($this->parent)) + {$this->parent->clear(); unset($this->parent);} + if (isset($this->root)) {$this->root->clear(); unset($this->root);} + unset($this->doc); + unset($this->noise); + } + + function dump($show_attr=true) + { + $this->root->dump($show_attr); + } + + // prepare HTML data and init everything + protected function prepare($str, $lowercase=true, $stripRN=true, + $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT) + { + $this->clear(); + + // set the length of content before we do anything to it. + $this->size = strlen($str); + // Save the original size of the html that we got in. It might be + // useful to someone. + $this->original_size = $this->size; + + //before we save the string as the doc... strip out the \r \n's + // if we are told to. + if ($stripRN) { + $str = str_replace("\r", " ", $str); + $str = str_replace("\n", " ", $str); + + // set the length of content since we have changed it. + $this->size = strlen($str); + } + + $this->doc = $str; + $this->pos = 0; + $this->cursor = 1; + $this->noise = array(); + $this->nodes = array(); + $this->lowercase = $lowercase; + $this->default_br_text = $defaultBRText; + $this->default_span_text = $defaultSpanText; + $this->root = new simple_html_dom_node($this); + $this->root->tag = 'root'; + $this->root->_[HDOM_INFO_BEGIN] = -1; + $this->root->nodetype = HDOM_TYPE_ROOT; + $this->parent = $this->root; + if ($this->size>0) $this->char = $this->doc[0]; + } + + // parse html content + protected function parse() + { + if (($s = $this->copy_until_char('<'))==='') + { + return $this->read_tag(); + } + + // text + $node = new simple_html_dom_node($this); + ++$this->cursor; + $node->_[HDOM_INFO_TEXT] = $s; + $this->link_nodes($node, false); + return true; + } + + // PAPERG - dkchou - added this to try to identify the character set of + // the page we have just parsed so we know better how to spit it out later. + // NOTE: IF you provide a routine called + // get_last_retrieve_url_contents_content_type which returns the + // CURLINFO_CONTENT_TYPE from the last curl_exec + // (or the content_type header from the last transfer), we will parse + // THAT, and if a charset is specified, we will use it over any other + // mechanism. + protected function parse_charset() + { + global $debugObject; + + $charset = null; + + if (function_exists('get_last_retrieve_url_contents_content_type')) + { + $contentTypeHeader = + get_last_retrieve_url_contents_content_type(); + $success = preg_match('/charset=(.+)/', $contentTypeHeader, + $matches); + if ($success) + { + $charset = $matches[1]; + if (is_object($debugObject)) {$debugObject->debugLog(2, + 'header content-type found charset of: ' . $charset);} + } + + } + + if (empty($charset)) + { + $el = $this->root->find('meta[http-equiv=Content-Type]',0); + if (!empty($el)) + { + $fullvalue = $el->content; + if (is_object($debugObject)) {$debugObject->debugLog(2, + 'meta content-type tag found' . $fullvalue);} + + if (!empty($fullvalue)) + { + $success = preg_match('/charset=(.+)/', $fullvalue, + $matches); + if ($success) + { + $charset = $matches[1]; + } + else + { + // If there is a meta tag, and they don't specify the + // character set, research says that it's typically + // ISO-8859-1 + if (is_object($debugObject)) {$debugObject->debugLog(2, + 'meta content-type tag couldn\'t be parsed. '. + 'using iso-8859 default.');} + $charset = 'ISO-8859-1'; + } + } + } + } + + // If we couldn't find a charset above, then lets try to detect one + // based on the text we got... + if (empty($charset)) + { + // Have php try to detect the encoding from the text given to us. + $charset = mb_detect_encoding($this->root->plaintext . "ascii", + $encoding_list = array( "UTF-8", "CP1252" ) ); + if (is_object($debugObject)) {$debugObject->debugLog(2, + 'mb_detect found: ' . $charset);} + + // and if this doesn't work... then we need to just wrongheadedly + // assume it's UTF-8 so that we can move on - cause this will + // usually give us most of what we need... + if ($charset === false) + { + if (is_object($debugObject)) {$debugObject->debugLog(2, + 'since mb_detect failed - using default of utf-8');} + $charset = 'UTF-8'; + } + } + + // Since CP1252 is a superset, if we get one of it's subsets, we want + // it instead. + if ((strtolower($charset) == strtolower('ISO-8859-1')) || + (strtolower($charset) == strtolower('Latin1')) || + (strtolower($charset) == strtolower('Latin-1'))) + { + if (is_object($debugObject)) {$debugObject->debugLog(2, + 'replacing ' . $charset . ' with CP1252 as its a superset');} + $charset = 'CP1252'; + } + + if (is_object($debugObject)) + {$debugObject->debugLog(1, 'EXIT - ' . $charset);} + + return $this->_charset = $charset; + } + + // read tag info + protected function read_tag() + { + if ($this->char!=='<') + { + $this->root->_[HDOM_INFO_END] = $this->cursor; + return false; + } + $begin_tag_pos = $this->pos; + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + + // end tag + if ($this->char==='/') + { + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + // This represents the change in the simple_html_dom trunk + // from revision 180 to 181. + // $this->skip($this->token_blank_t); + $this->skip($this->token_blank); + $tag = $this->copy_until_char('>'); + + // skip attributes in end tag + if (($pos = strpos($tag, ' '))!==false) + $tag = substr($tag, 0, $pos); + + $parent_lower = strtolower($this->parent->tag); + $tag_lower = strtolower($tag); + + if ($parent_lower!==$tag_lower) + { + if (isset($this->optional_closing_tags[$parent_lower]) && + isset($this->block_tags[$tag_lower])) + { + $this->parent->_[HDOM_INFO_END] = 0; + $org_parent = $this->parent; + + while (($this->parent->parent) && + strtolower($this->parent->tag)!==$tag_lower) + $this->parent = $this->parent->parent; + + if (strtolower($this->parent->tag)!==$tag_lower) { + $this->parent = $org_parent; + // restore origonal parent + if ($this->parent->parent) + $this->parent = $this->parent->parent; + $this->parent->_[HDOM_INFO_END] = $this->cursor; + return $this->as_text_node($tag); + } + } + else if (($this->parent->parent) && + isset($this->block_tags[$tag_lower])) + { + $this->parent->_[HDOM_INFO_END] = 0; + $org_parent = $this->parent; + + while (($this->parent->parent) && + strtolower($this->parent->tag)!==$tag_lower) + $this->parent = $this->parent->parent; + + if (strtolower($this->parent->tag)!==$tag_lower) + { + $this->parent = $org_parent; + // restore origonal parent + $this->parent->_[HDOM_INFO_END] = $this->cursor; + return $this->as_text_node($tag); + } + } + else if (($this->parent->parent) && + strtolower($this->parent->parent->tag)===$tag_lower) + { + $this->parent->_[HDOM_INFO_END] = 0; + $this->parent = $this->parent->parent; + } + else + return $this->as_text_node($tag); + } + + $this->parent->_[HDOM_INFO_END] = $this->cursor; + if ($this->parent->parent) $this->parent = $this->parent->parent; + + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + return true; + } + + $node = new simple_html_dom_node($this); + $node->_[HDOM_INFO_BEGIN] = $this->cursor; + ++$this->cursor; + $tag = $this->copy_until($this->token_slash); + $node->tag_start = $begin_tag_pos; + + // doctype, cdata & comments... + if (isset($tag[0]) && $tag[0]==='!') { + $node->_[HDOM_INFO_TEXT] = '<' . $tag . + $this->copy_until_char('>'); + + if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') { + $node->nodetype = HDOM_TYPE_COMMENT; + $node->tag = 'comment'; + } else { + $node->nodetype = HDOM_TYPE_UNKNOWN; + $node->tag = 'unknown'; + } + if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>'; + $this->link_nodes($node, true); + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + return true; + } + + // text + if ($pos=strpos($tag, '<')!==false) { + $tag = '<' . substr($tag, 0, -1); + $node->_[HDOM_INFO_TEXT] = $tag; + $this->link_nodes($node, false); + $this->char = $this->doc[--$this->pos]; // prev + return true; + } + + if (!preg_match("/^[\w-:]+$/", $tag)) { + $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>'); + if ($this->char==='<') { + $this->link_nodes($node, false); + return true; + } + + if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>'; + $this->link_nodes($node, false); + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + return true; + } + + // begin tag + $node->nodetype = HDOM_TYPE_ELEMENT; + $tag_lower = strtolower($tag); + $node->tag = ($this->lowercase) ? $tag_lower : $tag; + + // handle optional closing tags + if (isset($this->optional_closing_tags[$tag_lower]) ) + { + while (isset($this-> + optional_closing_tags[$tag_lower][strtolower($this->parent->tag)])) + { + $this->parent->_[HDOM_INFO_END] = 0; + $this->parent = $this->parent->parent; + } + $node->parent = $this->parent; + } + + $guard = 0; // prevent infinity loop + $space = array($this->copy_skip($this->token_blank), '', ''); + + // attributes + do + { + if ($this->char!==null && $space[0]==='') + { + break; + } + $name = $this->copy_until($this->token_equal); + if ($guard===$this->pos) + { + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + continue; + } + $guard = $this->pos; + + // handle endless '<' + if ($this->pos>=$this->size-1 && $this->char!=='>') { + $node->nodetype = HDOM_TYPE_TEXT; + $node->_[HDOM_INFO_END] = 0; + $node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name; + $node->tag = 'text'; + $this->link_nodes($node, false); + return true; + } + + // handle mismatch '<' + if ($this->doc[$this->pos-1]=='<') { + $node->nodetype = HDOM_TYPE_TEXT; + $node->tag = 'text'; + $node->attr = array(); + $node->_[HDOM_INFO_END] = 0; + $node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, + $this->pos-$begin_tag_pos-1); + $this->pos -= 2; + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + $this->link_nodes($node, false); + return true; + } + + if ($name!=='/' && $name!=='') { + $space[1] = $this->copy_skip($this->token_blank); + $name = $this->restore_noise($name); + if ($this->lowercase) $name = strtolower($name); + if ($this->char==='=') { + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + $this->parse_attr($node, $name, $space); + } + else { + //no value attr: nowrap, checked selected... + $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO; + $node->attr[$name] = true; + if ($this->char!='>') $this->char = + $this->doc[--$this->pos]; // prev + } + $node->_[HDOM_INFO_SPACE][] = $space; + $space = array($this->copy_skip($this->token_blank), '', ''); + } + else + break; + } while ($this->char!=='>' && $this->char!=='/'); + + $this->link_nodes($node, true); + $node->_[HDOM_INFO_ENDSPACE] = $space[0]; + + // check self closing + if ($this->copy_until_char_escape('>')==='/') + { + $node->_[HDOM_INFO_ENDSPACE] .= '/'; + $node->_[HDOM_INFO_END] = 0; + } + else + { + // reset parent + if (!isset($this->self_closing_tags[strtolower($node->tag)])) + $this->parent = $node; + } + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + + // If it's a BR tag, we need to set it's text to the default text. + // This way when we see it in plaintext, we can generate formatting that + // the user wants. + // since a br tag never has sub nodes, this works well. + if ($node->tag == "br") + { + $node->_[HDOM_INFO_INNER] = $this->default_br_text; + } + + return true; + } + + // parse attributes + protected function parse_attr($node, $name, &$space) + { + // Per sourceforge: http://sourceforge.net/tracker/?func=detail& + // aid=3061408&group_id=218559&atid=1044037 + // If the attribute is already defined inside a tag, only pay + // atetntion to the first one as opposed to the last one. + if (isset($node->attr[$name])) + { + return; + } + + $space[2] = $this->copy_skip($this->token_blank); + switch ($this->char) { + case '"': + $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE; + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + $node->attr[$name] = + $this->restore_noise($this->copy_until_char_escape('"')); + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + break; + case '\'': + $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE; + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + $node->attr[$name] = + $this->restore_noise($this->copy_until_char_escape('\'')); + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + break; + default: + $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO; + $node->attr[$name] = $this-> + restore_noise($this->copy_until($this->token_attr)); + } + // PaperG: Attributes should not have \r or \n in them, that counts + // as html whitespace. + $node->attr[$name] = str_replace("\r", "", $node->attr[$name]); + $node->attr[$name] = str_replace("\n", "", $node->attr[$name]); + // PaperG: If this is a "class" selector, lets get rid of the + // preceeding and trailing space since some people leave it in the + // multi class case. + if ($name == "class") { + $node->attr[$name] = trim($node->attr[$name]); + } + } + + // link node's parent + protected function link_nodes(&$node, $is_child) + { + $node->parent = $this->parent; + $this->parent->nodes[] = $node; + if ($is_child) + { + $this->parent->children[] = $node; + } + } + + // as a text node + protected function as_text_node($tag) + { + $node = new simple_html_dom_node($this); + ++$this->cursor; + $node->_[HDOM_INFO_TEXT] = '</' . $tag . '>'; + $this->link_nodes($node, false); + $this->char = (++$this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + return true; + } + + protected function skip($chars) + { + $this->pos += strspn($this->doc, $chars, $this->pos); + $this->char = ($this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + } + + protected function copy_skip($chars) + { + $pos = $this->pos; + $len = strspn($this->doc, $chars, $pos); + $this->pos += $len; + $this->char = ($this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + if ($len===0) return ''; + return substr($this->doc, $pos, $len); + } + + protected function copy_until($chars) + { + $pos = $this->pos; + $len = strcspn($this->doc, $chars, $pos); + $this->pos += $len; + $this->char = ($this->pos<$this->size) + ? $this->doc[$this->pos] : null; // next + return substr($this->doc, $pos, $len); + } + + protected function copy_until_char($char) + { + if ($this->char===null) return ''; + + if (($pos = strpos($this->doc, $char, $this->pos))===false) { + $ret = substr($this->doc, $this->pos, $this->size-$this->pos); + $this->char = null; + $this->pos = $this->size; + return $ret; + } + + if ($pos===$this->pos) return ''; + $pos_old = $this->pos; + $this->char = $this->doc[$pos]; + $this->pos = $pos; + return substr($this->doc, $pos_old, $pos-$pos_old); + } + + protected function copy_until_char_escape($char) + { + if ($this->char===null) return ''; + + $start = $this->pos; + while (1) + { + if (($pos = strpos($this->doc, $char, $start))===false) + { + $ret = substr($this->doc, $this->pos, $this->size-$this->pos); + $this->char = null; + $this->pos = $this->size; + return $ret; + } + + if ($pos===$this->pos) return ''; + + if ($this->doc[$pos-1]==='\\') { + $start = $pos+1; + continue; + } + + $pos_old = $this->pos; + $this->char = $this->doc[$pos]; + $this->pos = $pos; + return substr($this->doc, $pos_old, $pos-$pos_old); + } + } + + // remove noise from html content + // save the noise in the $this->noise array. + protected function remove_noise($pattern, $remove_tag=false) + { + global $debugObject; + if (is_object($debugObject)) { $debugObject->debugLogEntry(1); } + + $count = preg_match_all($pattern, $this->doc, $matches, + PREG_SET_ORDER|PREG_OFFSET_CAPTURE); + + for ($i=$count-1; $i>-1; --$i) + { + $key = '___noise___'.sprintf('% 5d', count($this->noise)+1000); + if (is_object($debugObject)) { $debugObject->debugLog(2, + 'key is: ' . $key); } + $idx = ($remove_tag) ? 0 : 1; + $this->noise[$key] = $matches[$i][$idx][0]; + $this->doc = substr_replace($this->doc, $key, + $matches[$i][$idx][1], strlen($matches[$i][$idx][0])); + } + + // reset the length of content + $this->size = strlen($this->doc); + if ($this->size>0) + { + $this->char = $this->doc[0]; + } + } + + // restore noise to html content + function restore_noise($text) + { + global $debugObject; + if (is_object($debugObject)) { $debugObject->debugLogEntry(1); } + + while (($pos=strpos($text, '___noise___'))!==false) + { + // Sometimes there is a broken piece of markup, and we don't GET + // the pos+11 etc... token which indicates a problem outside of + // us... + if (strlen($text) > $pos+15) + { + $key = '___noise___'.$text[$pos+11].$text[$pos+12]. + $text[$pos+13].$text[$pos+14].$text[$pos+15]; + if (is_object($debugObject)) { $debugObject->debugLog(2, + 'located key of: ' . $key); } + + if (isset($this->noise[$key])) + { + $text = substr($text, 0, $pos).$this->noise[$key]. + substr($text, $pos+16); + } + else + { + // do this to prevent an infinite loop. + $text = substr($text, 0, $pos). + 'UNDEFINED NOISE FOR KEY: '.$key . + substr($text, $pos+16); + } + } + else + { + // There is no valid key being given back to us... We must get + // rid of the ___noise___ or we will have a problem. + $text = substr($text, 0, $pos).'NO NUMERIC NOISE KEY' . + substr($text, $pos+11); + } + } + return $text; + } + + // Sometimes we NEED one of the noise elements. + function search_noise($text) + { + global $debugObject; + if (is_object($debugObject)) { $debugObject->debugLogEntry(1); } + + foreach ($this->noise as $noiseElement) + { + if (strpos($noiseElement, $text)!==false) + { + return $noiseElement; + } + } + } + function __toString() + { + return $this->root->innertext(); + } + + function __get($name) + { + switch ($name) + { + case 'outertext': + return $this->root->innertext(); + case 'innertext': + return $this->root->innertext(); + case 'plaintext': + return $this->root->text(); + case 'charset': + return $this->_charset; + case 'target_charset': + return $this->_target_charset; + } + } + + // camel naming conventions + function childNodes($idx=-1) {return $this->root->childNodes($idx);} + function firstChild() {return $this->root->first_child();} + function lastChild() {return $this->root->last_child();} + function createElement($name, $value=null) + {return @str_get_html("<$name>$value</$name>")->first_child();} + function createTextNode($value) {return @end(str_get_html($value)->nodes);} + function getElementById($id) {return $this->find("#$id", 0);} + function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);} + function getElementByTagName($name) {return $this->find($name, 0);} + function getElementsByTagName($name, $idx=-1) + {return $this->find($name, $idx);} + function loadFile() {$args = func_get_args();$this->load_file($args);} +} + + diff --git a/src/library/processors/HtmlProcessor.php b/src/library/processors/HtmlProcessor.php index ea43d3280..d8ac4db47 100755 --- a/src/library/processors/HtmlProcessor.php +++ b/src/library/processors/HtmlProcessor.php @@ -36,6 +36,8 @@ use seekquarry\yioop\library\UrlParser; use seekquarry\yioop\library\summarizers\CentroidSummarizer; use seekquarry\yioop\library\summarizers\GraphBasedSummarizer; use seekquarry\yioop\library\summarizers\ScrapeSummarizer; +use seekquarry\yioop\library\summarizers\CentroidWeightedSummarizer; +use seekquarry\yioop\library\cmsdetector\CmsDetector; /** * Used to create crawl summary information @@ -69,7 +71,7 @@ class HtmlProcessor extends TextProcessor /** Register File Types We Handle*/ $add_extensions = ["asp", "aspx", "cgi", "cfm", "cfml", "do", "htm", "html", "jsp", "php", "pl", "py", "shtml"]; - self::$indexed_file_types = array_merge(self::$indexed_file_types, + self::$indexed_file_types = array_merge(self::$indexed_file_types, $add_extensions); self::$mime_processor["text/html"] = "HtmlProcessor"; self::$mime_processor["text/asp"] = "HtmlProcessor"; @@ -92,7 +94,21 @@ class HtmlProcessor extends TextProcessor $is_centroid = $this->summarizer_option == self::CENTROID_SUMMARIZER; $is_graph_based = $this->summarizer_option == self::GRAPH_BASED_SUMMARIZER; + $is_centroid_weighted = + $this->summarizer_option == self::CENTROID_WEIGHTED_SUMMARIZER; if (is_string($page)) { + //check to see if we have a page from a CMS we recognize + //if so we will extract the important content and only + //summarize the important content + $detect = new CmsDetector(); + $cms = $detect->checkFromContent($page); + $summary["CMS"] = $cms; + if (strcasecmp($cms, "UNKNOWN") != 0) { + $full_system_name = $detect ->cmsClassPath; + $system = new $full_system_name(); + $system->home_html = $page; + $page = $system->getImportantContent(); + } $page = preg_replace('/\ \;|\&rdquo\;|\&ldquo\;|\&mdash\;/si', ' ',$page); $page = @@ -114,6 +130,13 @@ class HtmlProcessor extends TextProcessor $summary[self::DESCRIPTION] = $summary_cloud[0]; $summary[self::WORD_CLOUD] = $summary_cloud[1]; L\crawlLog("..Using Centroid Summarizer"); + } elseif ($is_centroid_weighted) { + $summary_cloud = + CentroidWeightedSummarizer::getCentroidWeightedSummary( + $dom_page, $summary[self::LANG]); + $summary[self::DESCRIPTION] = $summary_cloud[0]; + $summary[self::WORD_CLOUD] = $summary_cloud[1]; + L\crawlLog("..Using Centroid Weighed Summarizer"); } elseif ($is_graph_based) { $summary[self::DESCRIPTION] = GraphBasedSummarizer::getGraphBasedSummary($dom_page, @@ -271,13 +294,13 @@ class HtmlProcessor extends TextProcessor "contains(translate(@http-equiv,". "'abcdefghijklmnopqrstuvwxyz'," . " 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'),'CONTENT-TYPE')" => 1]; - foreach($charset_checks as $charset_check => $index) { + foreach ($charset_checks as $charset_check => $index) { $metas = $xpath->evaluate("/html/head//meta[$charset_check]"); $found_metas = []; foreach ($metas as $meta) { $content = $meta->getAttribute('content'); $charset_metas = explode("=", $content); - if($index == 0) { + if ($index == 0) { return $charset_metas[$index]; } if (isset($charset_metas[$index])) { @@ -591,4 +614,4 @@ class HtmlProcessor extends TextProcessor $text = preg_replace('/\</', ' <', $text); return strip_tags($text); } -} +} \ No newline at end of file diff --git a/src/library/processors/PageProcessor.php b/src/library/processors/PageProcessor.php index b48e065b7..6b70b5c8c 100644 --- a/src/library/processors/PageProcessor.php +++ b/src/library/processors/PageProcessor.php @@ -59,8 +59,8 @@ abstract class PageProcessor implements CrawlConstants public $plugin_instances; /** * Stores the name of the summarizer used for crawling. - * Possible values are self::BASIC, self::GRAPH_BASED_SUMMARIZER - * and self::CENTROID_SUMMARIZER + * Possible values are self::BASIC, self::GRAPH_BASED_SUMMARIZER, + * self::CENTROID_SUMMARIZER and self::CENTROID_WEIGHTED_SUMMARIZER * @var string */ public $summarizer_option; @@ -100,8 +100,8 @@ abstract class PageProcessor implements CrawlConstants * @param int $max_description_len maximal length of a page summary * @param int $summarizer_option CRAWL_CONSTANT specifying what kind * of summarizer to use self::BASIC_SUMMARIZER, - * self::GRAPH_BASED_SUMMARIZER and self::CENTROID_SUMMARIZER - * self::CENTROID_SUMMARIZER + * self::GRAPH_BASED_SUMMARIZER, self::CENTROID_SUMMARIZER + * and self::CENTROID_WEIGHTED_SUMMARIZER */ public function __construct($plugins = [], $max_description_len = null, $summarizer_option = self::BASIC_SUMMARIZER) { @@ -136,7 +136,7 @@ abstract class PageProcessor implements CrawlConstants foreach ($this->plugin_instances as $plugin_instance) { $subdoc = null; $class_name = get_class($plugin_instance); - $subtype = lcfirst(substr($class_name, + $subtype = lcfirst(substr($class_name, strlen(C\NS_PLUGINS), -strlen("Plugin"))); $subdocs_description = $plugin_instance->pageProcessing( $page, $url); @@ -180,7 +180,7 @@ abstract class PageProcessor implements CrawlConstants public static function initializeIndexedFileTypes() { $proc_prefixes = [C\BASE_DIR, C\APP_DIR]; - foreach($proc_prefixes as $proc_prefix) { + foreach ($proc_prefixes as $proc_prefix) { $proc_dir = $proc_prefix . "/library/processors/"; foreach (glob("$proc_dir*Processor.php") as $filename) { require_once $filename; @@ -195,4 +195,4 @@ abstract class PageProcessor implements CrawlConstants } self::$indexed_file_types = array_unique(self::$indexed_file_types); } -} +} \ No newline at end of file diff --git a/src/library/processors/TextProcessor.php b/src/library/processors/TextProcessor.php index bd9f56ca7..9f097eca4 100755 --- a/src/library/processors/TextProcessor.php +++ b/src/library/processors/TextProcessor.php @@ -35,6 +35,7 @@ use seekquarry\yioop\library as L; use seekquarry\yioop\library\summarizers\CentroidSummarizer; use seekquarry\yioop\library\summarizers\GraphBasedSummarizer; use seekquarry\yioop\library\UrlParser; +use seekquarry\yioop\library\summarizers\CentroidWeightedSummarizer; /** * To try to guess locale's from string samples @@ -67,7 +68,7 @@ class TextProcessor extends PageProcessor parent::__construct($plugins, $max_description_len, $summarizer_option); /** Register File Types We Handle*/ $add_extensions = ["csv", "tab", "tsv", "txt"]; - self::$indexed_file_types = array_merge(self::$indexed_file_types, + self::$indexed_file_types = array_merge(self::$indexed_file_types, $add_extensions); self::$mime_processor["text/plain"] = "TextProcessor"; self::$mime_processor["text/csv"] = "TextProcessor"; @@ -221,4 +222,4 @@ class TextProcessor extends PageProcessor } } } -} +} \ No newline at end of file diff --git a/src/library/summarizers/CentroidSummarizer.php b/src/library/summarizers/CentroidSummarizer.php index 4c2ea2eba..d7b95df59 100644 --- a/src/library/summarizers/CentroidSummarizer.php +++ b/src/library/summarizers/CentroidSummarizer.php @@ -213,13 +213,13 @@ class CentroidSummarizer extends Summarizer $sum_array = array_keys(array_slice($sim, 0, $top - 1, true)); sort($sum_array); $summary = ''; - foreach($sum_array as $key) { + foreach ($sum_array as $key) { $summary .= $out_sentences[$key] . ". "; } if (self::OUTPUT_TO_FILE) { $output_file_contents = ""; - foreach($sum_array as $key) { - $output_file_contents .= $out_sentences[$key] . ".\n"; + foreach ($sum_array as $key) { + $output_file_contents .= $out_sentences[$key] . ".\r\n"; } file_put_contents(C\WORK_DIRECTORY . self::OUTPUT_FILE_PATH, $output_file_contents); @@ -348,4 +348,3 @@ class CentroidSummarizer extends Summarizer return $page; } } - diff --git a/src/library/summarizers/CentroidWeightedSummarizer.php b/src/library/summarizers/CentroidWeightedSummarizer.php new file mode 100644 index 000000000..d117e366d --- /dev/null +++ b/src/library/summarizers/CentroidWeightedSummarizer.php @@ -0,0 +1,567 @@ +<?php +/** + * SeekQuarry/Yioop -- + * Open Source Pure PHP Search Engine, Crawler, and Indexer + * + * Copyright (C) 2009 - 2015 Chris Pollett chris@pollett.org + * + * LICENSE: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * END LICENSE + * + * @author Chris Pollett (chris@pollett.org) + * @license http://www.gnu.org/licenses/ GPL3 + * @link http://www.seekquarry.com/ + * @copyright 2009 - 2015 + * @filesource + */ +namespace seekquarry\yioop\library\summarizers; + +use seekquarry\yioop\configs as C; +use seekquarry\yioop\library as L; +use seekquarry\yioop\library\CrawlConstants; +use seekquarry\yioop\library\PhraseParser; +use seekquarry\yioop\library\processors\PageProcessor; + +/** + * Class which may be used by the processors to get a summary for a text + * document that may later be used for indexing. Generate a summary based + * on it closeness to the average sentence. It also weights sentences based + * on the CMS that produced it. It also generates a word cloud for a document. + * @author Charles Bocage (charles.bocage@sjsu.edu) + */ +class CentroidWeightedSummarizer extends Summarizer +{ + /** + * Number of bytes in a sentence before it is considered long + * We use strlen rather than mbstrlen. This might actually be + * a better metric of the potential of a sentence to have info. + */ + const LONG_SENTENCE_LEN = 50; + /** + * Number of sentences in a document before only consider longer + * sentences in centroid + */ + const LONG_SENTENCE_THRESHOLD = 100; + /** + * Number of distinct terms to use in generating summary + */ + const MAX_DISTINCT_TERMS = 1000; + /** + * Number of words in word cloud + */ + const WORD_CLOUD_LEN = 5; + /** + * Number of nonzero centroid components + */ + const CENTROID_COMPONENTS = 50; + /** + * whether to output the results to the disk or not + */ + const OUTPUT_TO_FILE = false; + /** + * The full disk location to save the result to + */ + const OUTPUT_FILE_PATH = "/temp/centroid_weighted_summarizer_result.txt"; + /** + * Generate a summary based on it closeness to the average sentence. + * It also weights sentences based on the CMS that produced it. + * @param string $doc complete raw page to generate the summary from. + * @param string $lang language of the page to decide which stop words to + * call proper tokenizer.php of the specified language. + * + * @return array array of summary and word cloud + */ + public static function getCentroidWeightedSummary($doc, $lang) + { + $raw_doc = $doc; + $doc = self::pageProcessing($doc); + /* Format the document to remove characters other than periods and + alphanumerics. + */ + $formatted_doc = self::formatDoc($doc); + $stop_obj = PhraseParser::getTokenizer($lang); + /* Splitting into sentences */ + $out_sentences = self::getSentences($doc); + $sentences = self::removeStopWords($out_sentences, $stop_obj); + $sentence_array = self::splitSentences($sentences, $lang, $raw_doc); + $terms = $sentence_array[0]; + $tf_per_sentence = $sentence_array[1]; + $tf_per_sentence_normalized = $sentence_array[2]; + $tf_average_sentence = + self::getAverageSentence($tf_per_sentence_normalized); + $tf_dot_product_per_sentence = + self::getDotProduct($tf_per_sentence_normalized, + $tf_average_sentence); + usort($tf_dot_product_per_sentence, 'self::sortInAscendingOrder'); + $summary = self::getSummary($tf_dot_product_per_sentence, + $out_sentences); + $n = count($out_sentences); + $terms = array_filter($terms); + $terms_counts = array_count_values($terms); + arsort($terms_counts); + $terms_counts = array_slice($terms_counts, 0, + self::MAX_DISTINCT_TERMS); + $terms = array_unique(array_keys($terms_counts)); + $t = count($terms); + if ($t == 0) { + return ["", ""]; + } + /* Initialize Nk [Number of sentences the term occurs] */ + $nk = []; + $nk = array_fill(0, $t, 0); + $nt = []; + /* Count TF for each word */ + for ($i = 0; $i < $n; $i++) { + for ($j = 0; $j < $t; $j++) { + if (strpos($sentences[$i], $terms[$j]) !== false) { + $nk[$j]++; + } + } + } + /* Calculate weights of each term for every sentence */ + $w = []; + $idf = []; + $idf_temp = 0; + for ($k = 0; $k < $t; $k++) { + if ($nk[$k] == 0) { + $idf_temp = 0; + $tmp = 0; + } else { + $idf_temp = $n / $nk[$k]; + $tmp = log($idf_temp); + } + $idf[$k] = $tmp; + } + /* Count TF for finding centroid */ + $wc = []; + $max_nt = -1; + $b = "\b"; + if (in_array($lang, ["zh-CN", "ja", "ko"])) { + $b = ""; + } + for ($j = 0; $j < $t; $j++) { + $nt = @preg_match_all("/$b{$terms[$j]}$b/", $formatted_doc, + $matches); //$matches included for backwards compatibility + $wc[$j] = $nt * $idf[$j]; + if (is_nan($wc[$j]) || is_infinite($wc[$j])) { + $wc[$j] = 0; + } + } + /* Calculate centroid */ + arsort($wc); + $centroid = array_slice($wc, 0, self::CENTROID_COMPONENTS, true); + /* Initializing centroid weight array by 0 */ + $wc = array_fill(0, $t, 0); + /* Word cloud */ + $i = 0; + $word_cloud = []; + foreach ($centroid as $key => $value) { + $wc[$key] = $value; + if ($i < self::WORD_CLOUD_LEN) { + $word_cloud[$i] = $terms[$key]; + } + $i++; + } + //should not need anything below this line +// if (strlen($formatted_doc) < PageProcessor::$max_description_len +// || $n == 1) { +// //if input short only use above to get a word cloud +// $formatted_doc = substr($formatted_doc, 0, +// PageProcessor::$max_description_len); +// return [$formatted_doc, $word_cloud]; +// } +// ksort($wc); +// /* Calculate similarity measure between centroid and each sentence */ +// $sim = []; +// for ($i=0; $i < $n; $i++) { +// $a = $b1 = $b2 = $c1 = $c2 = $d = 0; +// for ($k = 0; $k < $t; $k++) { +// $wck = $wc[$k]; +// $idfk = $idf[$k]; +// $tmp = substr_count($sentences[$i], $terms[$k]); +// $wik = ($tmp > 0) ? $idfk * (1 + log($tmp)) : 0; +// $a += ($wik * $wck * $idfk); +// $b1 += ($wik * $wik); +// $c1 += ($wck * $wck); +// } +// $b2 = sqrt($b1); +// $c2 = sqrt($c1); +// $d = $b2 * $c2; +// if ($d == 0) { +// $sim[$i] = 0; +// } else { +// $sim[$i] = $a / $d; +// } +// } +// arsort($sim); +// /* Getting how many sentences should be there in summary */ +// $top = self::summarySentenceCount($out_sentences, $sim); +// $sum_array = []; +// $sum_array = array_keys(array_slice($sim, 0, $top - 1, true)); +// sort($sum_array); +// $summary = ''; +// foreach ($sum_array as $key) { +// $summary .= $out_sentences[$key] . ". "; +// } +// +// +// +// +// if (self::OUTPUT_TO_FILE) { +// $output_file_contents = ""; +// foreach ($sum_array as $key) { +// $output_file_contents .= $out_sentences[$key] . ".\n"; +// } +// file_put_contents(C\WORK_DIRECTORY . self::OUTPUT_FILE_PATH, +// $output_file_contents); +// } + /* Summary of text summarization */ + return [$summary, $word_cloud]; + } + /** + * Calculates how many sentences to put in the summary to match the + * MAX_DESCRIPTION_LEN. + * + * @param array $sentences sentences in doc in their original order + * @param array $sim associative array of sentence-number-in-doc => + * similarity score to centroid (sorted from highest to lowest score). + * @return int number of sentences + */ + public static function summarySentenceCount($sentences, $sim) + { + $top = null; + $count = 0; + foreach ($sim as $key => $value) + { + if ($count < PageProcessor::$max_description_len) { + $count += strlen($sentences[$key]); + $top++; + } + } + return $top; + } + /** + * Breaks any content into sentences by splitting it on spaces or carriage + * returns + * @param string $content complete page. + * @return array array of sentences from that content. + */ + public static function getSentences($content) + { + $lines = preg_split( + '/(\.|\||\!|\?|ï¼|ï¼|ã)\s+|(\n|\r)(\n|\r)+|\s{5}/', + $content, 0, PREG_SPLIT_NO_EMPTY); + $out = []; + $sentence = ""; + $count = 0; + $theshold_factor = 1; + foreach ($lines as $line) { + $sentence .= " " . $line; + if (strlen($line) < 2) { + continue; + } + if ($count < self::LONG_SENTENCE_THRESHOLD || + strlen($sentence) > $theshold_factor * + self::LONG_SENTENCE_LEN){ + $sentence = preg_replace("/\s+/ui", " ", $sentence); + $out[] = trim($sentence); + $count++; + $theshold_factor = + pow(1.5, floor($count/self::LONG_SENTENCE_THRESHOLD)); + } + $sentence = ""; + } + if (trim($sentence) != "") { + $sentence = preg_replace("/\s+/ui", " ", $sentence); + $out[] = trim($sentence); + } + return $out; + } + /** + * Formats the sentences to remove all characters except words, + * digits and spaces + * @param string $sent complete page. + * @return string formatted sentences. + */ + public static function formatSentence($sent) + { + $sent = trim(preg_replace('/[^\p{L}\p{N}\s]+/u', + ' ', mb_strtolower($sent))); + return $sent; + } + /** + * Formats the document to remove carriage returns, hyphens and digits + * as we will not be using digits in word cloud. + * The formatted document generated by this function is only used to + * compute centroid. + * @param string $content formatted page. + * @return string formatted document. + */ + public static function formatDoc($content) + { + $substitute = ['/[\n\r\-]+/', '/[^\p{L}\s\.]+/u', '/[\.]+/']; + $content = preg_replace($substitute, ' ', mb_strtolower($content)); + return $content; + } + /** + * This function does an additional processing on the page + * such as removing all the tags from the page + * @param string $page complete page. + * @return string processed page. + */ + public static function pageProcessing($page) + { + $substitutions = ['@<script[^>]*?>.*?</script>@si', + '/\ \;|\&rdquo\;|\&ldquo\;|\&mdash\;/si', + '@<style[^>]*?>.*?</style>@si', '/[\^\(\)]/', + '/\[(.*?)\]/', '/\t\n/' + ]; + $page = preg_replace($substitutions, ' ', $page); + $page = preg_replace('/\s{2,}/', ' ', $page); + $new_page = preg_replace("/\<br\s*(\/)?\s*\>/", "\n", $page); + $changed = false; + if ($new_page != $page) { + $changed = true; + $page = $new_page; + } + $page = preg_replace("/\<\/(h1|h2|h3|h4|h5|h6|table|tr|td|div|". + "p|address|section)\s*\>/", "\n\n", $page); + $page = preg_replace("/\<a/", " <a", $page); + $page = preg_replace("/\&\#\d{3}(\d?)\;|\&\w+\;/", " ", $page); + $page = preg_replace("/\</", " <", $page); + $page = strip_tags($page); + + if ($changed) { + $page = preg_replace("/(\r?\n[\t| ]*){2}/", "\n", $page); + } + $page = preg_replace("/(\r?\n[\t| ]*)/", "\n", $page); + $page = preg_replace("/\n\n\n+/", "\n\n", $page); + return $page; + } + /** + * Calculate the term frequencies. + * @param array $terms the list of all terms in the doc + * @param array $sentences the sentences in the doc + * @param string $doc complete raw page to generate the summary from. + * @return array a two dimensional array where the word is the key and + * the frequency is the value + */ + public static function getTermFrequencies($terms, $sentence, $doc) + { + $t = count($terms); + $nk = []; + $nk = array_fill(0, $t, 0); + $nt = []; + for ($j = 0; $j < $t; $j++) { + $nk[$j] += preg_match_all("/\b" . $terms[$j] . "\b/iu", + $sentence, $matches); + } + $term_frequencies = []; + for ($i = 0; $i < count($nk); $i++ ) { + //$additional_weight = self::getAdditionalWeight($terms[$i], $doc); + $term_frequencies[$terms[$i]] = $nk[$i];// + $additional_weight; + } + return $term_frequencies; + } + /** + * Normalize the term frequencies based on the sum of the squares. + * @param array $term_frequencies the array with the terms as the key + * and its frequency as the value + * @return array array of term frequencies normalized + */ + public static function normalizeTermFrequencies($term_frequencies) + { + $sum_of_squares = 0; + $result_sum = 0; + if (count($term_frequencies) == 0) { + $result = []; + } else { + foreach ($term_frequencies as $k => $v) { + $sum_of_squares += ($v * $v); + } + $square_root = sqrt($sum_of_squares); + foreach ($term_frequencies as $k => $v) { + if ($square_root == 0) { + $result[$k] = 0; + } else { + $result[$k] = ($v / $square_root); + } + } + foreach ($result as $k => $v) { + $result_sum += $v; + } + } + return $result; + } + /** + * Get the average sentence by adding up the values from each column and + * dividing it by the rows in the array. + * @param array $term_frequencies_normalized the array with the terms as + * the key and its normalized frequency as the value + * @return array array of frequencies averaged + */ + public static function getAverageSentence($term_frequencies_normalized) + { + $result = []; + if (count($term_frequencies_normalized) != 0) { + foreach ($term_frequencies_normalized as $k => $v) { + foreach ($v as $l => $w) { + if (count($result) == 0) { + $result[$l] = $w; + } else { + if (@array_key_exists($l, $result)) { + $result[$l] = $result[$l] + $w; + } else { + $result[$l] = $w; + } + } + } + } + $count = count($term_frequencies_normalized); + foreach ($result as $k => $v) { + $result[$k] = ($v / $count); + } + } + return $result; + } + /** + * Get the dot product of the normalized array and the average sentence + * @param array $term_frequencies_normalized the array with the terms as + * the key and its normalized frequency as the value + * @param array $average_sentence an array of each words average + * frequency value + * @return array array of frequencies averaged + */ + public static function getDotProduct($term_frequencies_normalized, + $average_sentence) + { + $result = []; + $count = 0; + foreach ($term_frequencies_normalized as $k => $v) { + $tempResult = 0; + foreach ($v as $l => $w) { + if (@array_key_exists($l, $average_sentence)) { + $tempResult = $tempResult + + ($average_sentence[$l] * $w); + } + } + $result[$count] = $tempResult; + $count++; + } + return $result; + } + /** + * Compare the two values and return if b is greater than a + * @param string $a the first value to compare + * @param string $b the second value to compare + * @return boolean if b is greater than a + */ + public static function sortInAscendingOrder($a, $b) + { + return $b > $a ? 1 : -1; + } + /** + * Returns a new array of sentences without the stop words + * @param array $sentences the array of sentences to process + * @param object $stop_obj the class that has the stopworedRemover method + * @return array a new array of sentences without the stop words + */ + public static function removeStopWords($sentences, $stop_obj) + { + $n = count($sentences); + $result = []; + if ($stop_obj && method_exists($stop_obj, "stopwordsRemover")) { + for ($i = 0; $i < $n; $i++ ) { + $result[$i] = $stop_obj->stopwordsRemover( + self::formatDoc($sentences[$i])); + } + } else { + $result = $sentences; + } + return $result; + } + /** + * Split up the sentences and return an array with all of the needed parts + * @param array $sentences the array of sentences to process + * @param string $lang the current locale + * @param string $doc complete raw page to generate the summary from. + * @return array an array with all of the needed parts + */ + public static function splitSentences($sentences, $lang, $doc) + { + $result = []; + + $terms = []; + $tf_index = 0; + $tf_per_sentence = []; + $tf_per_sentence_normalized = []; + foreach ($sentences as $sentence) { + $temp_terms = PhraseParser::segmentSegment($sentence, $lang); + $terms = array_merge($terms, $temp_terms); + $tf_per_sentence[$tf_index] = + self::getTermFrequencies($temp_terms, $sentence, $doc); + $tf_per_sentence_normalized[$tf_index] = + self::normalizeTermFrequencies($tf_per_sentence[$tf_index]); + $tf_index++; + } + $result[0] = $terms; + $result[1] = $tf_per_sentence; + $result[2] = $tf_per_sentence_normalized; + return $result; + } + /** + * Split up the sentences and return an array with all of the needed parts + * @param array $tf_dot_product_per_sentence an array that holds the dot + product of each sentence. It should be sorted from highest to + lowest when it is passed to this method. + * @param array $sentences the array of sentences to process + * @return string a string that represents the summary + */ + public static function getSummary($tf_dot_product_per_sentence, + $sentences) + { + $result = ""; + $result_length = 0; + $i = 0; + foreach ($tf_dot_product_per_sentence as $k => $v) { + if ($result_length + strlen($sentences[$k]) > + PageProcessor::$max_description_len) { + break; + } else { + $result_length += strlen($sentences[$k]); + if ($i == 0) { + $i = 1; + $result = $sentences[$k] . ". "; + if (self::OUTPUT_TO_FILE) { + $output_file_contents = $sentences[$k] . ". "; + } + } else { + $result .= " " . $sentences[$k] . ". "; + if (self::OUTPUT_TO_FILE) { + $output_file_contents = $output_file_contents . + "\r\n" . $sentences[$k] . ". "; + } + } + } + } + if (self::OUTPUT_TO_FILE) { + file_put_contents(C\WORK_DIRECTORY . self::OUTPUT_FILE_PATH, + $output_file_contents); + } + return $result; + } +} diff --git a/src/library/summarizers/GraphBasedSummarizer.php b/src/library/summarizers/GraphBasedSummarizer.php index 853647c1b..717b8a3d8 100644 --- a/src/library/summarizers/GraphBasedSummarizer.php +++ b/src/library/summarizers/GraphBasedSummarizer.php @@ -98,7 +98,7 @@ class GraphBasedSummarizer extends Summarizer $result = ""; $result_length = 0; $n = count($p); - for($i = 0; $i < $n; $i++ ) { + for ($i = 0; $i < $n; $i++ ) { $index = self::findLargestIndex($p); $p[$index] = -1; $sentence = $sentences[$index]; @@ -269,8 +269,8 @@ class GraphBasedSummarizer extends Summarizer $nk = []; $nk = array_fill(0, $t, 0); $nt = []; - for($j = 0; $j < $t; $j++) { - for($i = 0; $i < $n; $i++) { + for ($j = 0; $j < $t; $j++) { + for ($i = 0; $i < $n; $i++) { $nk[$j] += preg_match_all("/\b" . $terms[$j] . "\b/iu", $sentences[$i], $matches); } @@ -390,8 +390,10 @@ class GraphBasedSummarizer extends Summarizer preg_match_all("/ " . $word_to_search_for . " /", $second_sentence, $matches); if (count($matches[0]) == 0) { - $sum += ($term_frequencies[$word_to_search_for] * - $term_frequencies[$word_to_search_for]); + if (isset($term_frequencies[$word_to_search_for])) { + $sum += ($term_frequencies[$word_to_search_for] * + $term_frequencies[$word_to_search_for]); + } $non_common_words++; } else { $terms = self::getTerms(array($second_sentence), $lang); @@ -414,8 +416,10 @@ class GraphBasedSummarizer extends Summarizer preg_match_all("/ " . trim($word_to_search_for) . " /", $first_sentence, $matches); if (count($matches[0]) == 0) { - $sum += ($term_frequencies[$word_to_search_for] * - $term_frequencies[$word_to_search_for]); + if (isset($term_frequencies[$word_to_search_for])) { + $sum += ($term_frequencies[$word_to_search_for] * + $term_frequencies[$word_to_search_for]); + } $non_common_words++; } } @@ -486,4 +490,4 @@ class GraphBasedSummarizer extends Summarizer $page = preg_replace("/\n\n\n+/u", "\n\n", $page); return $page; } -} +} \ No newline at end of file diff --git a/src/library/summarizers/ScrapeSummarizer.php b/src/library/summarizers/ScrapeSummarizer.php index cfab38e60..906b3a3a2 100644 --- a/src/library/summarizers/ScrapeSummarizer.php +++ b/src/library/summarizers/ScrapeSummarizer.php @@ -43,6 +43,14 @@ use seekquarry\yioop\library\processors\PageProcessor; */ class ScrapeSummarizer extends Summarizer { + /** + * whether to output the results to the disk or not + */ + const OUTPUT_TO_FILE = false; + /** + * The full disk location to save the result to + */ + const OUTPUT_FILE_PATH = "/temp/scrape_summarizer_result.txt"; /** * This is a basic summarizer * @@ -68,18 +76,23 @@ class ScrapeSummarizer extends Summarizer $xpath = new \DOMXPath($dom); $metas = $xpath->evaluate("/html//meta"); $description = ""; + $output_file_contents = ""; //look for a meta tag with a description - foreach($metas as $meta) { - if(stristr($meta->getAttribute('name'), "description")) { + foreach ($metas as $meta) { + if (stristr($meta->getAttribute('name'), "description")) { $description .= " .. ".$meta->getAttribute('content'); } } - if(PageProcessor::$max_description_len > 2 * C\MAX_DESCRIPTION_LEN) { + if (PageProcessor::$max_description_len > 2 * C\MAX_DESCRIPTION_LEN) { /* if don't need to summarize much, take meta description from above code, then concatenate body of doc after stripping tags, return result */ $description .= "\n".self::crudeDescription($page); + if (self::OUTPUT_TO_FILE) { + file_put_contents(C\WORK_DIRECTORY . self::OUTPUT_FILE_PATH, + $description); + } return $description; } /* @@ -95,10 +108,10 @@ class ScrapeSummarizer extends Summarizer "/html//section", "/html//cite"]; $para_data = []; $len = 0; - foreach($page_parts as $part) { + foreach ($page_parts as $part) { $doc_nodes = $xpath->evaluate($part); - foreach($doc_nodes as $node) { - if($part == "/html//a") { + foreach ($doc_nodes as $node) { + if ($part == "/html//a") { $content = $node->getAttribute('href')." = "; $add_len = min(PageProcessor::$max_description_len / 2, mb_strlen($content)); @@ -109,25 +122,35 @@ class ScrapeSummarizer extends Summarizer mb_strlen($node_text)); $para_data[$add_len][] = mb_substr($node_text, 0, $add_len); $len += $add_len; - - if($len > PageProcessor::$max_description_len) { break 2;} - if(in_array($part, ["/html//p[1]", "/html//div[1]", + if ($len > PageProcessor::$max_description_len) { break 2;} + if (in_array($part, ["/html//p[1]", "/html//div[1]", "/html//div[2]", "/html//p[2]", "/html//p[3]", "/html//div[3]", "/html//div[4]", "/html//p[4]"])){ break;} } } krsort($para_data); - foreach($para_data as $add_len => $data) { - if(!isset($first_len)) { + foreach ($para_data as $add_len => $data) { + if (!isset($first_len)) { $first_len = $add_len; } - foreach($data as $datum) { + foreach ($data as $datum) { $description .= " .. ". $datum; + if (self::OUTPUT_TO_FILE) { + if ($output_file_contents == "") { + $output_file_contents = trim($datum); + } else { + $output_file_contents = $output_file_contents . + "\r\n" . trim($datum); + } + } } - if($first_len > 3 * $add_len) break; + if ($first_len > 3 * $add_len) break; } $description = preg_replace("/(\s)+/u", " ", $description); - + if (self::OUTPUT_TO_FILE) { + file_put_contents(C\WORK_DIRECTORY . self::OUTPUT_FILE_PATH, + $output_file_contents); + } return $description; } /** @@ -142,7 +165,7 @@ class ScrapeSummarizer extends Summarizer $body = parent::getBetweenTags($page, 0, "<body", "</body"); $body = preg_replace("/\</", " <", $body); $body = strip_tags("<body".$body[1]."</body>"); - if($body == "") { return $body; } + if ($body == "") { return $body; } $body= preg_replace("/\s+/", " ", $body); return mb_substr($body, 0, self::$max_description_len); } @@ -161,4 +184,4 @@ class ScrapeSummarizer extends Summarizer return strip_tags($text); } } -?> + diff --git a/src/library/summarizers/Summarizer.php b/src/library/summarizers/Summarizer.php index bf5485cae..d83c08348 100644 --- a/src/library/summarizers/Summarizer.php +++ b/src/library/summarizers/Summarizer.php @@ -109,7 +109,7 @@ class Summarizer $class_three_matches_count = 0; $class_four_matches_count = 0; $class_five_matches_count = 0; - if (strpos(mb_strtolower($doc), + if (@strpos(mb_strtolower($doc), mb_strtolower($term), 0) !== false) { preg_match_all($class_one_regex, $doc, $class_one_matches); @@ -119,31 +119,31 @@ class Summarizer preg_match_all($class_five_regex, $doc, $class_five_matches); if (count($class_one_matches[0]) > 0) { - for($i = 1; $i < count($class_one_matches); $i++) { + for ($i = 1; $i < count($class_one_matches); $i++) { $class_one_matches_count = $class_one_matches_count + substr_count($class_one_matches[$i][0], $term); } } if (count($class_two_matches[0]) > 0) { - for($i = 1; $i < count($class_two_matches); $i++) { + for ($i = 1; $i < count($class_two_matches); $i++) { $class_two_matches_count = $class_two_matches_count + substr_count($class_two_matches[$i][0], $term); } } if (count($class_three_matches[0]) > 0) { - for($i = 1; $i < count($class_three_matches); $i++) { + for ($i = 1; $i < count($class_three_matches); $i++) { $class_three_matches_count = $class_three_matches_count + substr_count($class_three_matches[$i][0], $term); } } if (count($class_four_matches[0]) > 0) { - for($i = 1; $i < count($class_four_matches); $i++) { + for ($i = 1; $i < count($class_four_matches); $i++) { $class_four_matches_count = $class_four_matches_count + substr_count($class_four_matches[$i][0], $term); } } if (count($class_five_matches[0]) > 0) { - for($i = 1; $i < count($class_five_matches); $i++) { + for ($i = 1; $i < count($class_five_matches); $i++) { $class_five_matches_count = $class_five_matches_count + substr_count($class_five_matches[$i][0], $term); } @@ -157,4 +157,4 @@ class Summarizer } return $result; } -} +} \ No newline at end of file diff --git a/src/locale/en_US/configure.ini b/src/locale/en_US/configure.ini index 8a4a67c98..daa05a331 100644 --- a/src/locale/en_US/configure.ini +++ b/src/locale/en_US/configure.ini @@ -513,6 +513,9 @@ crawl_component_centroid = "Centroid" ; CrawlComponent.php line: 849 crawl_component_graph_based = "Graph-Based" ; +; CrawlComponent.php line: 850 +crawl_component_centroid_weighted = "Centrod-Weighted" +; ; CrawlComponent.php line: 1138 crawl_component_page_options_updated = "Page Options Updated!" ; @@ -4487,4 +4490,4 @@ wordfilter_plugin_preferences = "Word Filter Preferences" wordfilter_plugin_factory_settings = "Factory Settings" ; ; WordfilterPlugin.php line: 485 -wordfilter_plugin_save = "Save" +wordfilter_plugin_save = "Save" \ No newline at end of file diff --git a/tests/CmsDetectorTest.php b/tests/CmsDetectorTest.php new file mode 100644 index 000000000..8bb23abe3 --- /dev/null +++ b/tests/CmsDetectorTest.php @@ -0,0 +1,93 @@ +<?php +/** + * SeekQuarry/Yioop -- + * Open Source Pure PHP Search Engine, Crawler, and Indexer + * + * Copyright (C) 2009 - 2015 Chris Pollett chris@pollett.org + * + * LICENSE: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * END LICENSE + * + * @author Charles Bocage charles.bocage@sjsu.edu + * @license http://www.gnu.org/licenses/ GPL3 + * @link http://www.seekquarry.com/ + * @copyright 2009 - 2015 + * @filesource + */ +namespace seekquarry\yioop\tests; + +use seekquarry\yioop\configs as C; +use seekquarry\yioop\library\UnitTest; +use seekquarry\yioop\library\cmsdetector\CmsDetector; + +/** + * Code used to test the CMS detector algorithms. + * + * @author Charles Bocage + */ +class CmsDetectorTest extends UnitTest +{ + /** + * Nothing done for unit test setup + */ + public function setUp() + { + } + /** + * Nothing done for unit test tear done + */ + public function tearDown() + { + } + /** + * This function reads each line from the $file_names file. The + * $file_names file contains a list of a files to load into the + * CMS detector to check its framework. The contents of the file is sent + * to the CMS detector and it returns if it found a match or not. Then it + * corresponding value in the $return_values_to_compare file to make sure + * they match. + * + * $return_values_to_compare is a list of corresponding values used for + * comparing results + * $file_names is a list of files to load into the CMS detector + */ + public function checkTestCase() + { + $cms_detector_dir = C\PARENT_DIR.'/tests/test_files/cms_detector'; + $file_names = file("$cms_detector_dir/cms_detector_input.txt"); + $return_values_to_compare = + file("$cms_detector_dir/cms_detector_results.txt"); + for ($i = 0; $i < count($file_names); $i++) { + $file_name = trim($file_names[$i]); + $file_path = $cms_detector_dir . "/" . $file_name; + $return_value_to_compare = trim($return_values_to_compare[$i]); + $contents = file_get_contents($file_path); + $detect = new CmsDetector(); + $cms_detector_return_value = $detect->checkFromContent($contents); + if ($return_value_to_compare != $cms_detector_return_value) { + echo "Detecting the contents of \"$file_name\" ". + "to $cms_detector_return_value should be". + " $return_value_to_compare\n"; + exit(); + } + $this->assertEqual($cms_detector_return_value, + $return_value_to_compare, "function check ". + "correctly detects the contents in \"$file_name\" ". + "to $return_value_to_compare"); + } + } +} \ No newline at end of file diff --git a/tests/test_files/cms_detector/Drupal01.txt b/tests/test_files/cms_detector/Drupal01.txt new file mode 100644 index 000000000..d28c2b650 --- /dev/null +++ b/tests/test_files/cms_detector/Drupal01.txt @@ -0,0 +1,53 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><script type="text/javascript">window.NREUM||(NREUM={}),__nr_require=function(e,n,t){function r(t){if(!n[t]){var o=n[t]={exports:{}};e[t][0].call(o.exports,function(n){var o=e[t][1][n];return r(o?o:n)},o,o.exports)}return n[t].exports}if("function"==typeof __nr_require)return __nr_require;for(var o=0;o<t.length;o++)r(t[o]);return r}({QJf3ax:[function(e,n){function t(e){function n(n,t,a){e&&e(n,t,a),a||(a={});for(var u=c(n),f=u.length,s=i(a,o,r),p=0;f>p;p++)u[p].apply(s,t);return s}function a(e,n){f[e]=c(e).concat(n)}function c(e){return f[e]||[]}function u(){return t(n)}var f={};return{on:a,emit:n,create:u,listeners:c,_events:f}}function r(){return{}}var o="nr@context",i=e("gos");n.exports=t()},{gos:"7eSDFh"}],ee:[function(e,n){n.exports=e("QJf3ax")},{}],3:[function(e,n){function t(e){return function(){r(e,[(new Date).getTime()].concat(i(arguments)))}}var r=e("handle"),o=e(1),i=e(2);"undefined"==typeof window.newrelic&&(newrelic=window.NREUM);var a=["setPageViewName","addPageAction","setCustomAttribute","finished","addToTrace","inlineHit","noticeError"];o(a,function(e,n){window.NREUM[n]=t("api-"+n)}),n.exports=window.NREUM},{1:12,2:13,handle:"D5DuLP"}],"7eSDFh":[function(e,n){function t(e,n,t){if(r.call(e,n))return e[n];var o=t();if(Object.defineProperty&&Object.keys)try{return Object.defineProperty(e,n,{value:o,writable:!0,enumerable:!1}),o}catch(i){}return e[n]=o,o}var r=Object.prototype.hasOwnProperty;n.exports=t},{}],gos:[function(e,n){n.exports=e("7eSDFh")},{}],handle:[function(e,n){n.exports=e("D5DuLP")},{}],D5DuLP:[function(e,n){function t(e,n,t){return r.listeners(e).length?r.emit(e,n,t):(o[e]||(o[e]=[]),void o[e].push(n))}var r=e("ee").create(),o={};n.exports=t,t.ee=r,r.q=o},{ee:"QJf3ax"}],id:[function(e,n){n.exports=e("XL7HBI")},{}],XL7HBI:[function(e,n){function t(e){var n=typeof e;return!e||"object"!==n&&"function"!==n?-1:e===window?0:i(e,o,function(){return r++})}var r=1,o="nr@id",i=e("gos");n.exports=t},{gos:"7eSDFh"}],G9z0Bl:[function(e,n){function t(){var e=d.info=NREUM.info,n=f.getElementsByTagName("script")[0];if(e&&e.licenseKey&&e.applicationID&&n){c(p,function(n,t){n in e||(e[n]=t)});var t="https"===s.split(":")[0]||e.sslForHttp;d.proto=t?"https://":"http://",a("mark",["onload",i()]);var r=f.createElement("script");r.src=d.proto+e.agent,n.parentNode.insertBefore(r,n)}}function r(){"complete"===f.readyState&&o()}function o(){a("mark",["domContent",i()])}function i(){return(new Date).getTime()}var a=e("handle"),c=e(1),u=(e(2),window),f=u.document,s=(""+location).split("?")[0],p={beacon:"bam.nr-data.net",errorBeacon:"bam.nr-data.net",agent:"js-agent.newrelic.com/nr-632.min.js"},d=n.exports={offset:i(),origin:s,features:{}};f.addEventListener?(f.addEventListener("DOMContentLoaded",o,!1),u.addEventListener("load",t,!1)):(f.attachEvent("onreadystatechange",r),u.attachEvent("onload",t)),a("mark",["firstbyte",i()])},{1:12,2:3,handle:"D5DuLP"}],loader:[function(e,n){n.exports=e("G9z0Bl")},{}],12:[function(e,n){function t(e,n){var t=[],o="",i=0;for(o in e)r.call(e,o)&&(t[i]=n(o,e[o]),i+=1);return t}var r=Object.prototype.hasOwnProperty;n.exports=t},{}],13:[function(e,n){function t(e,n,t){n||(n=0),"undefined"==typeof t&&(t=e?e.length:0);for(var r=-1,o=t-n||0,i=Array(0>o?0:o);++r<o;)i[r]=e[n+r];return i}n.exports=t},{}]},{},["G9z0Bl"]);</script> +<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> +<meta name="keywords" content="Jaguars, Football, Sports" /> +<meta name="description" content="Jaguars offensive coordinator Greg Olson was refreshingly blunt after practice Wednesday when detailing the teams red zone woes.The Jaguars enter Sundays game at Tampa Bay having scored touchdowns on only4-of-11 trips (36.4 percent, fifth-worst in the NFL) inside the 20-yard line.Really, its been execution more than anything, Olson said. 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charset=UTF-8" /> +<meta name="keywords" content="Jaguars, Football, Sports" /> +<meta name="description" content="Speaking to several hundred reporters in February at the NFL Scouting Combine, former Florida State quarterback Jameis Winston couldnt hide his enthusiasm about being able to focus entirely on football.This is the first time Ive had an off-season, and I love just putting everything into this, he said. 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charset=UTF-8" /> +<meta name="keywords" content="Florida Gators, College, Sports" /> +<meta name="description" content="SEC POWER POLL1. 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