/inc/app/sitesearch/lib/Zend/Search/Lucene/Document/Html.php
PHP | 310 lines | 146 code | 43 blank | 121 comment | 27 complexity | f182dbfd9e355011cba92e6d6d4b4d2b MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, Apache-2.0, GPL-3.0
- <?php
- /**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category Zend
- * @package Zend_Search_Lucene
- * @subpackage Document
- * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- /** Zend_Search_Lucene_Document */
- require_once 'Zend/Search/Lucene/Document.php';
- /**
- * HTML document.
- *
- * @category Zend
- * @package Zend_Search_Lucene
- * @subpackage Document
- * @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Search_Lucene_Document_Html extends Zend_Search_Lucene_Document
- {
- /**
- * List of document links
- *
- * @var array
- */
- private $_links = array();
- /**
- * List of document header links
- *
- * @var array
- */
- private $_headerLinks = array();
- /**
- * Stored DOM representation
- *
- * @var DOMDocument
- */
- private $_doc;
- /**
- * Object constructor
- *
- * @param string $data
- * @param boolean $isFile
- * @param boolean $storeContent
- */
- private function __construct($data, $isFile, $storeContent)
- {
- $this->_doc = new DOMDocument();
- $this->_doc->substituteEntities = true;
- if ($isFile) {
- @$this->_doc->loadHTMLFile($data);
- } else{
- @$this->_doc->loadHTML($data);
- }
- $xpath = new DOMXPath($this->_doc);
- $docTitle = '';
- $titleNodes = $xpath->query('/html/head/title');
- foreach ($titleNodes as $titleNode) {
- // title should always have only one entry, but we process all nodeset entries
- $docTitle .= $titleNode->nodeValue . ' ';
- }
- $this->addField(Zend_Search_Lucene_Field::Text('title', $docTitle, $this->_doc->actualEncoding));
- $metaNodes = $xpath->query('/html/head/meta[@name]');
- foreach ($metaNodes as $metaNode) {
- $this->addField(Zend_Search_Lucene_Field::Text($metaNode->getAttribute('name'),
- $metaNode->getAttribute('content'),
- $this->_doc->actualEncoding));
- }
- $docBody = '';
- $bodyNodes = $xpath->query('/html/body');
- foreach ($bodyNodes as $bodyNode) {
- // body should always have only one entry, but we process all nodeset entries
- $this->_retrieveNodeText($bodyNode, $docBody);
- }
- if ($storeContent) {
- $this->addField(Zend_Search_Lucene_Field::Text('body', $docBody, $this->_doc->actualEncoding));
- } else {
- $this->addField(Zend_Search_Lucene_Field::UnStored('body', $docBody, $this->_doc->actualEncoding));
- }
- $linkNodes = $this->_doc->getElementsByTagName('a');
- foreach ($linkNodes as $linkNode) {
- if (($href = $linkNode->getAttribute('href')) != '') {
- $this->_links[] = $href;
- }
- }
- $this->_links = array_unique($this->_links);
- $linkNodes = $xpath->query('/html/head/link');
- foreach ($linkNodes as $linkNode) {
- if (($href = $linkNode->getAttribute('href')) != '') {
- $this->_headerLinks[] = $href;
- }
- }
- $this->_headerLinks = array_unique($this->_headerLinks);
- }
- /**
- * Get node text
- *
- * We should exclude scripts, which may be not included into comment tags, CDATA sections,
- *
- * @param DOMNode $node
- * @param string &$text
- */
- private function _retrieveNodeText(DOMNode $node, &$text)
- {
- if ($node->nodeType == XML_TEXT_NODE) {
- $text .= $node->nodeValue ;
- $text .= ' ';
- } else if ($node->nodeType == XML_ELEMENT_NODE && $node->nodeName != 'script') {
- foreach ($node->childNodes as $childNode) {
- $this->_retrieveNodeText($childNode, $text);
- }
- }
- }
- /**
- * Get document HREF links
- *
- * @return array
- */
- public function getLinks()
- {
- return $this->_links;
- }
- /**
- * Get document header links
- *
- * @return array
- */
- public function getHeaderLinks()
- {
- return $this->_headerLinks;
- }
- /**
- * Load HTML document from a string
- *
- * @param string $data
- * @param boolean $storeContent
- * @return Zend_Search_Lucene_Document_Html
- */
- public static function loadHTML($data, $storeContent = false)
- {
- return new Zend_Search_Lucene_Document_Html($data, false, $storeContent);
- }
- /**
- * Load HTML document from a file
- *
- * @param string $file
- * @param boolean $storeContent
- * @return Zend_Search_Lucene_Document_Html
- */
- public static function loadHTMLFile($file, $storeContent = false)
- {
- return new Zend_Search_Lucene_Document_Html($file, true, $storeContent);
- }
- /**
- * Highlight text in text node
- *
- * @param DOMText $node
- * @param array $wordsToHighlight
- * @param string $color
- */
- public function _highlightTextNode(DOMText $node, $wordsToHighlight, $color)
- {
- $analyzer = Zend_Search_Lucene_Analysis_Analyzer::getDefault();
- $analyzer->setInput($node->nodeValue, $this->_doc->encoding);
- $matchedTokens = array();
- while (($token = $analyzer->nextToken()) !== null) {
- if (isset($wordsToHighlight[$token->getTermText()])) {
- $matchedTokens[] = $token;
- }
- }
- if (count($matchedTokens) == 0) {
- return;
- }
- $matchedTokens = array_reverse($matchedTokens);
- foreach ($matchedTokens as $token) {
- // Cut text after matched token
- $node->splitText($token->getEndOffset());
- // Cut matched node
- $matchedWordNode = $node->splitText($token->getStartOffset());
- $highlightedNode = $this->_doc->createElement('b', $matchedWordNode->nodeValue);
- $highlightedNode->setAttribute('style', 'color:black;background-color:' . $color);
- $node->parentNode->replaceChild($highlightedNode, $matchedWordNode);
- }
- }
- /**
- * highlight words in content of the specified node
- *
- * @param DOMNode $contextNode
- * @param array $wordsToHighlight
- * @param string $color
- */
- public function _highlightNode(DOMNode $contextNode, $wordsToHighlight, $color)
- {
- $textNodes = array();
- if (!$contextNode->hasChildNodes()) {
- return;
- }
- foreach ($contextNode->childNodes as $childNode) {
- if ($childNode->nodeType == XML_TEXT_NODE) {
- // process node later to leave childNodes structure untouched
- $textNodes[] = $childNode;
- } else {
- // Skip script nodes
- if ($childNode->nodeName != 'script') {
- $this->_highlightNode($childNode, $wordsToHighlight, $color);
- }
- }
- }
- foreach ($textNodes as $textNode) {
- $this->_highlightTextNode($textNode, $wordsToHighlight, $color);
- }
- }
- /**
- * Highlight text with specified color
- *
- * @param string|array $words
- * @param string $color
- * @return string
- */
- public function highlight($words, $color = '#66ffff')
- {
- if (!is_array($words)) {
- $words = array($words);
- }
- $wordsToHighlight = array();
- $analyzer = Zend_Search_Lucene_Analysis_Analyzer::getDefault();
- foreach ($words as $wordString) {
- $wordsToHighlight = array_merge($wordsToHighlight, $analyzer->tokenize($wordString));
- }
- if (count($wordsToHighlight) == 0) {
- return $this->_doc->saveHTML();
- }
- $wordsToHighlightFlipped = array();
- foreach ($wordsToHighlight as $id => $token) {
- $wordsToHighlightFlipped[$token->getTermText()] = $id;
- }
- $xpath = new DOMXPath($this->_doc);
- $matchedNodes = $xpath->query("/html/body/*");
- foreach ($matchedNodes as $matchedNode) {
- $this->_highlightNode($matchedNode, $wordsToHighlightFlipped, $color);
- }
- }
- /**
- * Get HTML
- *
- * @return string
- */
- public function getHTML()
- {
- return $this->_doc->saveHTML();
- }
- }