(\s| ?)*){1,}/',
+ 'video' => '/http:\/\/(www\.)?(youtube|vimeo)\.com/i',
+ 'skipFootnoteLink' => '/^\s*(\[?[a-z0-9]{1,2}\]?|^|edit|citation needed)\s*$/i'
+ );
+
+ /* constants */
+ const FLAG_STRIP_UNLIKELYS = 1;
+ const FLAG_WEIGHT_CLASSES = 2;
+ const FLAG_CLEAN_CONDITIONALLY = 4;
+
+ /**
+ * Create instance of Readability
+ * @param string UTF-8 encoded string
+ * @param string (optional) URL associated with HTML (used for footnotes)
+ */
+ function __construct($html, $url=null)
+ {
+ /* Turn all double br's into p's */
+ /* Note, this is pretty costly as far as processing goes. Maybe optimize later. */
+ $html = preg_replace($this->regexps['replaceBrs'], '', $html);
+ $html = preg_replace($this->regexps['replaceFonts'], '<$1span>', $html);
+ $html = mb_convert_encoding($html, 'HTML-ENTITIES', "UTF-8");
+ $this->dom = new DOMDocument();
+ $this->dom->preserveWhiteSpace = false;
+ $this->dom->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
+ @$this->dom->loadHTML($html);
+ $this->url = $url;
+ }
+
+ /**
+ * Get article title element
+ * @return DOMElement
+ */
+ public function getTitle() {
+ return $this->articleTitle;
+ }
+
+ /**
+ * Get article content element
+ * @return DOMElement
+ */
+ public function getContent() {
+ return $this->articleContent;
+ }
+
+ /**
+ * Runs readability.
+ *
+ * Workflow:
+ * 1. Prep the document by removing script tags, css, etc.
+ * 2. Build readability's DOM tree.
+ * 3. Grab the article content from the current dom tree.
+ * 4. Replace the current DOM tree with the new one.
+ * 5. Read peacefully.
+ *
+ * @return boolean true if we found content, false otherwise
+ **/
+ public function init()
+ {
+ $this->removeScripts($this->dom);
+
+ // Assume successful outcome
+ $this->success = true;
+
+ $bodyElems = $this->dom->getElementsByTagName('body');
+ if ($bodyElems->length > 0) {
+ if ($this->bodyCache == null) {
+ $this->bodyCache = $bodyElems->item(0)->innerHTML;
+ }
+ if ($this->body == null) {
+ $this->body = $bodyElems->item(0);
+ }
+ }
+
+ $this->prepDocument();
+
+ //die($this->dom->documentElement->parentNode->nodeType);
+ //$this->setInnerHTML($this->dom->documentElement, $this->getInnerHTML($this->dom->documentElement));
+ //die($this->getInnerHTML($this->dom->documentElement));
+
+ /* Build readability's DOM tree */
+ $overlay = $this->dom->createElement('div');
+ $innerDiv = $this->dom->createElement('div');
+ $articleTitle = $this->getArticleTitle();
+ $articleContent = $this->grabArticle();
+
+ if (!$articleContent) {
+ $this->success = false;
+ $articleContent = $this->dom->createElement('div');
+ $articleContent->setAttribute('id', 'readability-content');
+ $articleContent->innerHTML = '
Sorry, Readability was unable to parse this page for content.
';
+ }
+
+ $overlay->setAttribute('id', 'readOverlay');
+ $innerDiv->setAttribute('id', 'readInner');
+
+ /* Glue the structure of our document together. */
+ $innerDiv->appendChild($articleTitle);
+ $innerDiv->appendChild($articleContent);
+ $overlay->appendChild($innerDiv);
+
+ /* Clear the old HTML, insert the new content. */
+ $this->body->innerHTML = '';
+ $this->body->appendChild($overlay);
+ //document.body.insertBefore(overlay, document.body.firstChild);
+ $this->body->removeAttribute('style');
+
+ $this->postProcessContent($articleContent);
+
+ // Set title and content instance variables
+ $this->articleTitle = $articleTitle;
+ $this->articleContent = $articleContent;
+
+ return $this->success;
+ }
+
+ /**
+ * Debug
+ */
+ protected function dbg($msg) {
+ if ($this->debug) echo '* ',$msg, '
', "\n";
+ }
+
+ /**
+ * Run any post-process modifications to article content as necessary.
+ *
+ * @param DOMElement
+ * @return void
+ */
+ public function postProcessContent($articleContent) {
+ if ($this->convertLinksToFootnotes && !preg_match('/wikipedia\.org/', @$this->url)) {
+ $this->addFootnotes($articleContent);
+ }
+ }
+
+ /**
+ * Get the article title as an H1.
+ *
+ * @return DOMElement
+ */
+ protected function getArticleTitle() {
+ $curTitle = '';
+ $origTitle = '';
+
+ try {
+ $curTitle = $origTitle = $this->getInnerText($this->dom->getElementsByTagName('title')->item(0));
+ } catch(Exception $e) {}
+
+ if (preg_match('/ [\|\-] /', $curTitle))
+ {
+ $curTitle = preg_replace('/(.*)[\|\-] .*/i', '$1', $origTitle);
+
+ if (count(explode(' ', $curTitle)) < 3) {
+ $curTitle = preg_replace('/[^\|\-]*[\|\-](.*)/i', '$1', $origTitle);
+ }
+ }
+ else if (strpos($curTitle, ': ') !== false)
+ {
+ $curTitle = preg_replace('/.*:(.*)/i', '$1', $origTitle);
+
+ if (count(explode(' ', $curTitle)) < 3) {
+ $curTitle = preg_replace('/[^:]*[:](.*)/i','$1', $origTitle);
+ }
+ }
+ else if(strlen($curTitle) > 150 || strlen($curTitle) < 15)
+ {
+ $hOnes = $this->dom->getElementsByTagName('h1');
+ if($hOnes->length == 1)
+ {
+ $curTitle = $this->getInnerText($hOnes->item(0));
+ }
+ }
+
+ $curTitle = trim($curTitle);
+
+ if (count(explode(' ', $curTitle)) <= 4) {
+ $curTitle = $origTitle;
+ }
+
+ $articleTitle = $this->dom->createElement('h1');
+ $articleTitle->innerHTML = $curTitle;
+
+ return $articleTitle;
+ }
+
+ /**
+ * Prepare the HTML document for readability to scrape it.
+ * This includes things like stripping javascript, CSS, and handling terrible markup.
+ *
+ * @return void
+ **/
+ protected function prepDocument() {
+ /**
+ * In some cases a body element can't be found (if the HTML is totally hosed for example)
+ * so we create a new body node and append it to the document.
+ */
+ if($this->dom->documentElement == null){
+ throw new Exception("No document element");
+ }
+ if ($this->body == null)
+ {
+ $this->body = $this->dom->createElement('body');
+ $this->dom->documentElement->appendChild($this->body);
+ }
+
+ $this->body->setAttribute('id', 'readabilityBody');
+
+ /* Remove all style tags in head */
+ $styleTags = $this->dom->getElementsByTagName('style');
+ for ($i = $styleTags->length-1; $i >= 0; $i--)
+ {
+ $styleTags->item($i)->parentNode->removeChild($styleTags->item($i));
+ }
+
+ /* Turn all double br's into p's */
+ /* Note, this is pretty costly as far as processing goes. Maybe optimize later. */
+ //document.body.innerHTML = document.body.innerHTML.replace(readability.regexps.replaceBrs, '').replace(readability.regexps.replaceFonts, '<$1span>');
+ // We do this in the constructor for PHP as that's when we have raw HTML - before parsing it into a DOM tree.
+ // Manipulating innerHTML as it's done in JS is not possible in PHP.
+ }
+
+ /**
+ * For easier reading, convert this document to have footnotes at the bottom rather than inline links.
+ * @see http://www.roughtype.com/archives/2010/05/experiments_in.php
+ *
+ * @return void
+ **/
+ public function addFootnotes($articleContent) {
+ $footnotesWrapper = $this->dom->createElement('div');
+ $footnotesWrapper->setAttribute('id', 'readability-footnotes');
+ $footnotesWrapper->innerHTML = '
References
';
+
+ $articleFootnotes = $this->dom->createElement('ol');
+ $articleFootnotes->setAttribute('id', 'readability-footnotes-list');
+ $footnotesWrapper->appendChild($articleFootnotes);
+
+ $articleLinks = $articleContent->getElementsByTagName('a');
+
+ $linkCount = 0;
+ for ($i = 0; $i < $articleLinks->length; $i++)
+ {
+ $articleLink = $articleLinks->item($i);
+ $footnoteLink = $articleLink->cloneNode(true);
+ $refLink = $this->dom->createElement('a');
+ $footnote = $this->dom->createElement('li');
+ $linkDomain = @parse_url($footnoteLink->getAttribute('href'), PHP_URL_HOST);
+ if (!$linkDomain && isset($this->url)) $linkDomain = @parse_url($this->url, PHP_URL_HOST);
+ //linkDomain = footnoteLink.host ? footnoteLink.host : document.location.host,
+ $linkText = $this->getInnerText($articleLink);
+
+ if ((strpos($articleLink->getAttribute('class'), 'readability-DoNotFootnote') !== false) || preg_match($this->regexps['skipFootnoteLink'], $linkText)) {
+ continue;
+ }
+
+ $linkCount++;
+
+ /** Add a superscript reference after the article link */
+ $refLink->setAttribute('href', '#readabilityFootnoteLink-' . $linkCount);
+ $refLink->innerHTML = '[' . $linkCount . ']';
+ $refLink->setAttribute('class', 'readability-DoNotFootnote');
+ $refLink->setAttribute('style', 'color: inherit;');
+
+ //TODO: does this work or should we use DOMNode.isSameNode()?
+ if ($articleLink->parentNode->lastChild == $articleLink) {
+ $articleLink->parentNode->appendChild($refLink);
+ } else {
+ $articleLink->parentNode->insertBefore($refLink, $articleLink->nextSibling);
+ }
+
+ $articleLink->setAttribute('style', 'color: inherit; text-decoration: none;');
+ $articleLink->setAttribute('name', 'readabilityLink-' . $linkCount);
+
+ $footnote->innerHTML = '^ ';
+
+ $footnoteLink->innerHTML = ($footnoteLink->getAttribute('title') != '' ? $footnoteLink->getAttribute('title') : $linkText);
+ $footnoteLink->setAttribute('name', 'readabilityFootnoteLink-' . $linkCount);
+
+ $footnote->appendChild($footnoteLink);
+ if ($linkDomain) $footnote->innerHTML = $footnote->innerHTML . ' (' . $linkDomain . ')';
+
+ $articleFootnotes->appendChild($footnote);
+ }
+
+ if ($linkCount > 0) {
+ $articleContent->appendChild($footnotesWrapper);
+ }
+ }
+
+ /**
+ * Reverts P elements with class 'readability-styled'
+ * to text nodes - which is what they were before.
+ *
+ * @param DOMElement
+ * @return void
+ */
+ function revertReadabilityStyledElements($articleContent) {
+ $xpath = new DOMXPath($articleContent->ownerDocument);
+ $elems = $xpath->query('.//p[@class="readability-styled"]', $articleContent);
+ //$elems = $articleContent->getElementsByTagName('p');
+ for ($i = $elems->length-1; $i >= 0; $i--) {
+ $e = $elems->item($i);
+ $e->parentNode->replaceChild($articleContent->ownerDocument->createTextNode($e->textContent), $e);
+ //if ($e->hasAttribute('class') && $e->getAttribute('class') == 'readability-styled') {
+ // $e->parentNode->replaceChild($this->dom->createTextNode($e->textContent), $e);
+ //}
+ }
+ }
+
+ /**
+ * Prepare the article node for display. Clean out any inline styles,
+ * iframes, forms, strip extraneous tags, etc.
+ *
+ * @param DOMElement
+ * @return void
+ */
+ function prepArticle($articleContent) {
+ $this->cleanStyles($articleContent);
+ $this->killBreaks($articleContent);
+ if ($this->revertForcedParagraphElements) {
+ $this->revertReadabilityStyledElements($articleContent);
+ }
+
+ /* Clean out junk from the article content */
+ $this->cleanConditionally($articleContent, 'form');
+ $this->clean($articleContent, 'object');
+ $this->clean($articleContent, 'h1');
+
+ /**
+ * If there is only one h2, they are probably using it
+ * as a header and not a subheader, so remove it since we already have a header.
+ ***/
+ if ($articleContent->getElementsByTagName('h2')->length == 1) {
+ $this->clean($articleContent, 'h2');
+ }
+ $this->clean($articleContent, 'iframe');
+
+ $this->cleanHeaders($articleContent);
+
+ /* Do these last as the previous stuff may have removed junk that will affect these */
+ $this->cleanConditionally($articleContent, 'table');
+ $this->cleanConditionally($articleContent, 'ul');
+ $this->cleanConditionally($articleContent, 'div');
+
+ /* Remove extra paragraphs */
+ $articleParagraphs = $articleContent->getElementsByTagName('p');
+ for ($i = $articleParagraphs->length-1; $i >= 0; $i--)
+ {
+ $imgCount = $articleParagraphs->item($i)->getElementsByTagName('img')->length;
+ $embedCount = $articleParagraphs->item($i)->getElementsByTagName('embed')->length;
+ $objectCount = $articleParagraphs->item($i)->getElementsByTagName('object')->length;
+
+ if ($imgCount === 0 && $embedCount === 0 && $objectCount === 0 && $this->getInnerText($articleParagraphs->item($i), false) == '')
+ {
+ $articleParagraphs->item($i)->parentNode->removeChild($articleParagraphs->item($i));
+ }
+ }
+
+ try {
+ $articleContent->innerHTML = preg_replace('/]*>\s*innerHTML);
+ //articleContent.innerHTML = articleContent.innerHTML.replace(/]*>\s*dbg("Cleaning innerHTML of breaks failed. This is an IE strict-block-elements bug. Ignoring.: " . $e);
+ }
+ }
+
+ /**
+ * Initialize a node with the readability object. Also checks the
+ * className/id for special names to add to its score.
+ *
+ * @param Element
+ * @return void
+ **/
+ protected function initializeNode($node) {
+ $readability = $this->dom->createAttribute('readability');
+ $readability->value = 0; // this is our contentScore
+ $node->setAttributeNode($readability);
+
+ switch (strtoupper($node->tagName)) { // unsure if strtoupper is needed, but using it just in case
+ case 'DIV':
+ $readability->value += 5;
+ break;
+
+ case 'PRE':
+ case 'TD':
+ case 'BLOCKQUOTE':
+ $readability->value += 3;
+ break;
+
+ case 'ADDRESS':
+ case 'OL':
+ case 'UL':
+ case 'DL':
+ case 'DD':
+ case 'DT':
+ case 'LI':
+ case 'FORM':
+ $readability->value -= 3;
+ break;
+
+ case 'H1':
+ case 'H2':
+ case 'H3':
+ case 'H4':
+ case 'H5':
+ case 'H6':
+ case 'TH':
+ $readability->value -= 5;
+ break;
+ }
+ $readability->value += $this->getClassWeight($node);
+ }
+
+ /***
+ * grabArticle - Using a variety of metrics (content score, classname, element types), find the content that is
+ * most likely to be the stuff a user wants to read. Then return it wrapped up in a div.
+ *
+ * @return DOMElement
+ **/
+ protected function grabArticle($page=null) {
+ $stripUnlikelyCandidates = $this->flagIsActive(self::FLAG_STRIP_UNLIKELYS);
+ if (!$page) $page = $this->dom;
+ $allElements = $page->getElementsByTagName('*');
+ /**
+ * First, node prepping. Trash nodes that look cruddy (like ones with the class name "comment", etc), and turn divs
+ * into P tags where they have been used inappropriately (as in, where they contain no other block level elements.)
+ *
+ * Note: Assignment from index for performance. See http://www.peachpit.com/articles/article.aspx?p=31567&seqNum=5
+ * TODO: Shouldn't this be a reverse traversal?
+ **/
+ $node = null;
+ $nodesToScore = array();
+ for ($nodeIndex = 0; ($node = $allElements->item($nodeIndex)); $nodeIndex++) {
+ //for ($nodeIndex=$targetList->length-1; $nodeIndex >= 0; $nodeIndex--) {
+ //$node = $targetList->item($nodeIndex);
+ $tagName = strtoupper($node->tagName);
+ /* Remove unlikely candidates */
+ if ($stripUnlikelyCandidates) {
+ $unlikelyMatchString = $node->getAttribute('class') . $node->getAttribute('id');
+ if (
+ preg_match($this->regexps['unlikelyCandidates'], $unlikelyMatchString) &&
+ !preg_match($this->regexps['okMaybeItsACandidate'], $unlikelyMatchString) &&
+ $tagName != 'BODY'
+ )
+ {
+ $this->dbg('Removing unlikely candidate - ' . $unlikelyMatchString);
+ //$nodesToRemove[] = $node;
+ $node->parentNode->removeChild($node);
+ $nodeIndex--;
+ continue;
+ }
+ }
+
+ if ($tagName == 'P' || $tagName == 'TD' || $tagName == 'PRE') {
+ $nodesToScore[] = $node;
+ }
+
+ /* Turn all divs that don't have children block level elements into p's */
+ if ($tagName == 'DIV') {
+ if (!preg_match($this->regexps['divToPElements'], $node->innerHTML)) {
+ //$this->dbg('Altering div to p');
+ $newNode = $this->dom->createElement('p');
+ try {
+ $newNode->innerHTML = $node->innerHTML;
+ //$nodesToReplace[] = array('new'=>$newNode, 'old'=>$node);
+ $node->parentNode->replaceChild($newNode, $node);
+ $nodeIndex--;
+ $nodesToScore[] = $node; // or $newNode?
+ }
+ catch(Exception $e) {
+ $this->dbg('Could not alter div to p, reverting back to div.: ' . $e);
+ }
+ }
+ else
+ {
+ /* EXPERIMENTAL */
+ // TODO: change these p elements back to text nodes after processing
+ for ($i = 0, $il = $node->childNodes->length; $i < $il; $i++) {
+ $childNode = $node->childNodes->item($i);
+ if ($childNode->nodeType == 3) { // XML_TEXT_NODE
+ //$this->dbg('replacing text node with a p tag with the same content.');
+ $p = $this->dom->createElement('p');
+ $p->innerHTML = $childNode->nodeValue;
+ $p->setAttribute('style', 'display: inline;');
+ $p->setAttribute('class', 'readability-styled');
+ $childNode->parentNode->replaceChild($p, $childNode);
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * Loop through all paragraphs, and assign a score to them based on how content-y they look.
+ * Then add their score to their parent node.
+ *
+ * A score is determined by things like number of commas, class names, etc. Maybe eventually link density.
+ **/
+ $candidates = array();
+ for ($pt=0; $pt < count($nodesToScore); $pt++) {
+ $parentNode = $nodesToScore[$pt]->parentNode;
+ // $grandParentNode = $parentNode ? $parentNode->parentNode : null;
+ $grandParentNode = !$parentNode ? null : (($parentNode->parentNode instanceof DOMElement) ? $parentNode->parentNode : null);
+ $innerText = $this->getInnerText($nodesToScore[$pt]);
+
+ if (!$parentNode || !isset($parentNode->tagName)) {
+ continue;
+ }
+
+ /* If this paragraph is less than 25 characters, don't even count it. */
+ if(strlen($innerText) < 25) {
+ continue;
+ }
+
+ /* Initialize readability data for the parent. */
+ if (!$parentNode->hasAttribute('readability'))
+ {
+ $this->initializeNode($parentNode);
+ $candidates[] = $parentNode;
+ }
+
+ /* Initialize readability data for the grandparent. */
+ if ($grandParentNode && !$grandParentNode->hasAttribute('readability') && isset($grandParentNode->tagName))
+ {
+ $this->initializeNode($grandParentNode);
+ $candidates[] = $grandParentNode;
+ }
+
+ $contentScore = 0;
+
+ /* Add a point for the paragraph itself as a base. */
+ $contentScore++;
+
+ /* Add points for any commas within this paragraph */
+ $contentScore += count(explode(',', $innerText));
+
+ /* For every 100 characters in this paragraph, add another point. Up to 3 points. */
+ $contentScore += min(floor(strlen($innerText) / 100), 3);
+
+ /* Add the score to the parent. The grandparent gets half. */
+ $parentNode->getAttributeNode('readability')->value += $contentScore;
+
+ if ($grandParentNode) {
+ $grandParentNode->getAttributeNode('readability')->value += $contentScore/2;
+ }
+ }
+
+ /**
+ * After we've calculated scores, loop through all of the possible candidate nodes we found
+ * and find the one with the highest score.
+ **/
+ $topCandidate = null;
+ for ($c=0, $cl=count($candidates); $c < $cl; $c++)
+ {
+ /**
+ * Scale the final candidates score based on link density. Good content should have a
+ * relatively small link density (5% or less) and be mostly unaffected by this operation.
+ **/
+ $readability = $candidates[$c]->getAttributeNode('readability');
+ $readability->value = $readability->value * (1-$this->getLinkDensity($candidates[$c]));
+
+ $this->dbg('Candidate: ' . $candidates[$c]->tagName . ' (' . $candidates[$c]->getAttribute('class') . ':' . $candidates[$c]->getAttribute('id') . ') with score ' . $readability->value);
+
+ if (!$topCandidate || $readability->value > (int)$topCandidate->getAttribute('readability')) {
+ $topCandidate = $candidates[$c];
+ }
+ }
+
+ /**
+ * If we still have no top candidate, just use the body as a last resort.
+ * We also have to copy the body node so it is something we can modify.
+ **/
+ if ($topCandidate === null || strtoupper($topCandidate->tagName) == 'BODY')
+ {
+ $topCandidate = $this->dom->createElement('div');
+ $topCandidate->innerHTML = ($page instanceof DOMDocument) ? $page->saveXML($page->documentElement) : $page->innerHTML;
+ $page->innerHTML = '';
+ $page->appendChild($topCandidate);
+ $this->initializeNode($topCandidate);
+ }
+
+ /**
+ * Now that we have the top candidate, look through its siblings for content that might also be related.
+ * Things like preambles, content split by ads that we removed, etc.
+ **/
+ $articleContent = $this->dom->createElement('div');
+ $articleContent->setAttribute('id', 'readability-content');
+ $siblingScoreThreshold = max(10, ((int)$topCandidate->getAttribute('readability')) * 0.2);
+ $siblingNodes = $topCandidate->parentNode->childNodes;
+
+ for ($s=0, $sl=$siblingNodes->length; $s < $sl; $s++)
+ {
+ $siblingNode = $siblingNodes->item($s);
+ $append = false;
+
+ $this->dbg('Looking at sibling node: ' . $siblingNode->nodeName . (($siblingNode->nodeType === XML_ELEMENT_NODE && $siblingNode->hasAttribute('readability')) ? (' with score ' . $siblingNode->getAttribute('readability')) : ''));
+
+ //dbg('Sibling has score ' . ($siblingNode->readability ? siblingNode.readability.contentScore : 'Unknown'));
+
+ if ($siblingNode === $topCandidate)
+ // or if ($siblingNode->isSameNode($topCandidate))
+ {
+ $append = true;
+ }
+
+ $contentBonus = 0;
+ /* Give a bonus if sibling nodes and top candidates have the example same classname */
+ if ($siblingNode->nodeType === XML_ELEMENT_NODE && $siblingNode->getAttribute('class') == $topCandidate->getAttribute('class') && $topCandidate->getAttribute('class') != '') {
+ $contentBonus += ((int)$topCandidate->getAttribute('readability')) * 0.2;
+ }
+
+ if ($siblingNode->nodeType === XML_ELEMENT_NODE && $siblingNode->hasAttribute('readability') && (((int)$siblingNode->getAttribute('readability')) + $contentBonus) >= $siblingScoreThreshold)
+ {
+ $append = true;
+ }
+
+ if (strtoupper($siblingNode->nodeName) == 'P') {
+ $linkDensity = $this->getLinkDensity($siblingNode);
+ $nodeContent = $this->getInnerText($siblingNode);
+ $nodeLength = strlen($nodeContent);
+
+ if ($nodeLength > 80 && $linkDensity < 0.25)
+ {
+ $append = true;
+ }
+ else if ($nodeLength < 80 && $linkDensity === 0 && preg_match('/\.( |$)/', $nodeContent))
+ {
+ $append = true;
+ }
+ }
+
+ if ($append)
+ {
+ $this->dbg('Appending node: ' . $siblingNode->nodeName);
+
+ $nodeToAppend = null;
+ $sibNodeName = strtoupper($siblingNode->nodeName);
+ if ($sibNodeName != 'DIV' && $sibNodeName != 'P') {
+ /* We have a node that isn't a common block level element, like a form or td tag. Turn it into a div so it doesn't get filtered out later by accident. */
+
+ $this->dbg('Altering siblingNode of ' . $sibNodeName . ' to div.');
+ $nodeToAppend = $this->dom->createElement('div');
+ try {
+ $nodeToAppend->setAttribute('id', $siblingNode->getAttribute('id'));
+ $nodeToAppend->innerHTML = $siblingNode->innerHTML;
+ }
+ catch(Exception $e)
+ {
+ $this->dbg('Could not alter siblingNode to div, reverting back to original.');
+ $nodeToAppend = $siblingNode;
+ $s--;
+ $sl--;
+ }
+ } else {
+ $nodeToAppend = $siblingNode;
+ $s--;
+ $sl--;
+ }
+
+ /* To ensure a node does not interfere with readability styles, remove its classnames */
+ $nodeToAppend->removeAttribute('class');
+
+ /* Append sibling and subtract from our list because it removes the node when you append to another node */
+ $articleContent->appendChild($nodeToAppend);
+ }
+ }
+
+ /**
+ * So we have all of the content that we need. Now we clean it up for presentation.
+ **/
+ $this->prepArticle($articleContent);
+
+ /**
+ * Now that we've gone through the full algorithm, check to see if we got any meaningful content.
+ * If we didn't, we may need to re-run grabArticle with different flags set. This gives us a higher
+ * likelihood of finding the content, and the sieve approach gives us a higher likelihood of
+ * finding the -right- content.
+ **/
+ if (strlen($this->getInnerText($articleContent, false)) < 250)
+ {
+ $this->body->innerHTML = $this->bodyCache;
+
+ if ($this->flagIsActive(self::FLAG_STRIP_UNLIKELYS)) {
+ $this->removeFlag(self::FLAG_STRIP_UNLIKELYS);
+ return $this->grabArticle($this->body);
+ }
+ else if ($this->flagIsActive(self::FLAG_WEIGHT_CLASSES)) {
+ $this->removeFlag(self::FLAG_WEIGHT_CLASSES);
+ return $this->grabArticle($this->body);
+ }
+ else if ($this->flagIsActive(self::FLAG_CLEAN_CONDITIONALLY)) {
+ $this->removeFlag(self::FLAG_CLEAN_CONDITIONALLY);
+ return $this->grabArticle($this->body);
+ }
+ else {
+ return false;
+ }
+ }
+ return $articleContent;
+ }
+
+ /**
+ * Remove script tags from document
+ *
+ * @param DOMElement
+ * @return void
+ */
+ public function removeScripts($doc) {
+ $scripts = $doc->getElementsByTagName('script');
+ for($i = $scripts->length-1; $i >= 0; $i--)
+ {
+ $scripts->item($i)->parentNode->removeChild($scripts->item($i));
+ }
+ }
+
+ /**
+ * Get the inner text of a node.
+ * This also strips out any excess whitespace to be found.
+ *
+ * @param DOMElement $
+ * @param boolean $normalizeSpaces (default: true)
+ * @return string
+ **/
+ public function getInnerText($e, $normalizeSpaces=true) {
+ $textContent = '';
+
+ if (!isset($e->textContent) || $e->textContent == '') {
+ return '';
+ }
+
+ $textContent = trim($e->textContent);
+
+ if ($normalizeSpaces) {
+ return preg_replace($this->regexps['normalize'], ' ', $textContent);
+ } else {
+ return $textContent;
+ }
+ }
+
+ /**
+ * Get the number of times a string $s appears in the node $e.
+ *
+ * @param DOMElement $e
+ * @param string - what to count. Default is ","
+ * @return number (integer)
+ **/
+ public function getCharCount($e, $s=',') {
+ return substr_count($this->getInnerText($e), $s);
+ }
+
+ /**
+ * Remove the style attribute on every $e and under.
+ *
+ * @param DOMElement $e
+ * @return void
+ */
+ public function cleanStyles($e) {
+ $elems = $e->getElementsByTagName('*');
+ foreach ($elems as $elem) {
+ $elem->removeAttribute('style');
+ }
+ }
+
+ /**
+ * Get the density of links as a percentage of the content
+ * This is the amount of text that is inside a link divided by the total text in the node.
+ *
+ * @param DOMElement $e
+ * @return number (float)
+ */
+ public function getLinkDensity($e) {
+ $links = $e->getElementsByTagName('a');
+ $textLength = strlen($this->getInnerText($e));
+ $linkLength = 0;
+ for ($i=0, $il=$links->length; $i < $il; $i++)
+ {
+ $linkLength += strlen($this->getInnerText($links->item($i)));
+ }
+ if ($textLength > 0) {
+ return $linkLength / $textLength;
+ } else {
+ return 0;
+ }
+ }
+
+ /**
+ * Get an elements class/id weight. Uses regular expressions to tell if this
+ * element looks good or bad.
+ *
+ * @param DOMElement $e
+ * @return number (Integer)
+ */
+ public function getClassWeight($e) {
+ if(!$this->flagIsActive(self::FLAG_WEIGHT_CLASSES)) {
+ return 0;
+ }
+
+ $weight = 0;
+
+ /* Look for a special classname */
+ if ($e->hasAttribute('class') && $e->getAttribute('class') != '')
+ {
+ if (preg_match($this->regexps['negative'], $e->getAttribute('class'))) {
+ $weight -= 25;
+ }
+ if (preg_match($this->regexps['positive'], $e->getAttribute('class'))) {
+ $weight += 25;
+ }
+ }
+
+ /* Look for a special ID */
+ if ($e->hasAttribute('id') && $e->getAttribute('id') != '')
+ {
+ if (preg_match($this->regexps['negative'], $e->getAttribute('id'))) {
+ $weight -= 25;
+ }
+ if (preg_match($this->regexps['positive'], $e->getAttribute('id'))) {
+ $weight += 25;
+ }
+ }
+ return $weight;
+ }
+
+ /**
+ * Remove extraneous break tags from a node.
+ *
+ * @param DOMElement $node
+ * @return void
+ */
+ public function killBreaks($node) {
+ $html = $node->innerHTML;
+ $html = preg_replace($this->regexps['killBreaks'], '
', $html);
+ $node->innerHTML = $html;
+ }
+
+ /**
+ * Clean a node of all elements of type "tag".
+ * (Unless it's a youtube/vimeo video. People love movies.)
+ *
+ * @param DOMElement $e
+ * @param string $tag
+ * @return void
+ */
+ public function clean($e, $tag) {
+ $targetList = $e->getElementsByTagName($tag);
+ $isEmbed = ($tag == 'object' || $tag == 'embed');
+
+ for ($y=$targetList->length-1; $y >= 0; $y--) {
+ /* Allow youtube and vimeo videos through as people usually want to see those. */
+ if ($isEmbed) {
+ $attributeValues = '';
+ for ($i=0, $il=$targetList->item($y)->attributes->length; $i < $il; $i++) {
+ $attributeValues .= $targetList->item($y)->attributes->item($i)->value . '|'; // DOMAttr? (TODO: test)
+ }
+
+ /* First, check the elements attributes to see if any of them contain youtube or vimeo */
+ if (preg_match($this->regexps['video'], $attributeValues)) {
+ continue;
+ }
+
+ /* Then check the elements inside this element for the same. */
+ if (preg_match($this->regexps['video'], $targetList->item($y)->innerHTML)) {
+ continue;
+ }
+ }
+ $targetList->item($y)->parentNode->removeChild($targetList->item($y));
+ }
+ }
+
+ /**
+ * Clean an element of all tags of type "tag" if they look fishy.
+ * "Fishy" is an algorithm based on content length, classnames,
+ * link density, number of images & embeds, etc.
+ *
+ * @param DOMElement $e
+ * @param string $tag
+ * @return void
+ */
+ public function cleanConditionally($e, $tag) {
+ if (!$this->flagIsActive(self::FLAG_CLEAN_CONDITIONALLY)) {
+ return;
+ }
+
+ $tagsList = $e->getElementsByTagName($tag);
+ $curTagsLength = $tagsList->length;
+
+ /**
+ * Gather counts for other typical elements embedded within.
+ * Traverse backwards so we can remove nodes at the same time without effecting the traversal.
+ *
+ * TODO: Consider taking into account original contentScore here.
+ */
+ for ($i=$curTagsLength-1; $i >= 0; $i--) {
+ $weight = $this->getClassWeight($tagsList->item($i));
+ $contentScore = ($tagsList->item($i)->hasAttribute('readability')) ? (int)$tagsList->item($i)->getAttribute('readability') : 0;
+
+ $this->dbg('Cleaning Conditionally ' . $tagsList->item($i)->tagName . ' (' . $tagsList->item($i)->getAttribute('class') . ':' . $tagsList->item($i)->getAttribute('id') . ')' . (($tagsList->item($i)->hasAttribute('readability')) ? (' with score ' . $tagsList->item($i)->getAttribute('readability')) : ''));
+
+ if ($weight + $contentScore < 0) {
+ $tagsList->item($i)->parentNode->removeChild($tagsList->item($i));
+ }
+ else if ( $this->getCharCount($tagsList->item($i), ',') < 10) {
+ /**
+ * If there are not very many commas, and the number of
+ * non-paragraph elements is more than paragraphs or other ominous signs, remove the element.
+ **/
+ $p = $tagsList->item($i)->getElementsByTagName('p')->length;
+ $img = $tagsList->item($i)->getElementsByTagName('img')->length;
+ $li = $tagsList->item($i)->getElementsByTagName('li')->length-100;
+ $input = $tagsList->item($i)->getElementsByTagName('input')->length;
+
+ $embedCount = 0;
+ $embeds = $tagsList->item($i)->getElementsByTagName('embed');
+ for ($ei=0, $il=$embeds->length; $ei < $il; $ei++) {
+ if (preg_match($this->regexps['video'], $embeds->item($ei)->getAttribute('src'))) {
+ $embedCount++;
+ }
+ }
+
+ $linkDensity = $this->getLinkDensity($tagsList->item($i));
+ $contentLength = strlen($this->getInnerText($tagsList->item($i)));
+ $toRemove = false;
+
+ if ( $img > $p ) {
+ $toRemove = true;
+ } else if ($li > $p && $tag != 'ul' && $tag != 'ol') {
+ $toRemove = true;
+ } else if ( $input > floor($p/3) ) {
+ $toRemove = true;
+ } else if ($contentLength < 25 && ($img === 0 || $img > 2) ) {
+ $toRemove = true;
+ } else if($weight < 25 && $linkDensity > 0.2) {
+ $toRemove = true;
+ } else if($weight >= 25 && $linkDensity > 0.5) {
+ $toRemove = true;
+ } else if(($embedCount == 1 && $contentLength < 75) || $embedCount > 1) {
+ $toRemove = true;
+ }
+
+ if ($toRemove) {
+ $tagsList->item($i)->parentNode->removeChild($tagsList->item($i));
+ }
+ }
+ }
+ }
+
+ /**
+ * Clean out spurious headers from an Element. Checks things like classnames and link density.
+ *
+ * @param DOMElement $e
+ * @return void
+ */
+ public function cleanHeaders($e) {
+ for ($headerIndex = 1; $headerIndex < 3; $headerIndex++) {
+ $headers = $e->getElementsByTagName('h' . $headerIndex);
+ for ($i=$headers->length-1; $i >=0; $i--) {
+ if ($this->getClassWeight($headers->item($i)) < 0 || $this->getLinkDensity($headers->item($i)) > 0.33) {
+ $headers->item($i)->parentNode->removeChild($headers->item($i));
+ }
+ }
+ }
+ }
+
+ public function flagIsActive($flag) {
+ return ($this->flags & $flag) > 0;
+ }
+
+ public function addFlag($flag) {
+ $this->flags = $this->flags | $flag;
+ }
+
+ public function removeFlag($flag) {
+ $this->flags = $this->flags & ~$flag;
+ }
+}
+?>
\ No newline at end of file
diff --git a/inc/3rdparty/libraries/tcpdf/CHANGELOG.TXT b/inc/3rdparty/libraries/tcpdf/CHANGELOG.TXT
new file mode 100644
index 0000000..a7dde3f
--- /dev/null
+++ b/inc/3rdparty/libraries/tcpdf/CHANGELOG.TXT
@@ -0,0 +1,2860 @@
+6.0.093 (2014-09-02)
+ - Security fix: some serialize/unserialize methods were replaced with json_encode/json_decode to avoid a potential object injection with user supplied content. Thanks to ownCloud Inc. for reporting this issue.
+ - K_TIMEZONE constant was added to the default configuration to supress date-time warnings.
+
+6.0.092 (2014-09-01)
+ - Bug item #956 "Monospaced fonts are not alignd at the baseline" was fixed.
+ - Bug item #964 "Problem when changing font size" was fixed.
+ - Bug item #969 "ImageSVG with radialGradient problem" was fixed.
+ - sRGB.icc file was replaced with the one from the Debian package icc-profiles-free (2.0.1+dfsg-1)
+
+6.0.091 (2014-08-13)
+ - Issue #325"Division by zero when css fontsize equals 0" was fixed.
+
+6.0.090 (2014-08-08)
+ - Starting from this version TCPDF is also available in GitHub at https://github.com/tecnickcom/TCPDF
+ - Function getmypid() was removed for better compatibility with shared hosting environments.
+ - Support for pulling SVG stroke opacity value from RGBa color was mergeg [adf006].
+ - Bug item #951 "HTML Table within TCPDF columns doesnt flow correctly on page break ..." was fixed.
+
+6.0.089 (2014-07-16)
+ - Bug item #948 "bottom line of rowspan cell not work correctly" was fixed.
+
+6.0.088 (2014-07-09)
+ - Bug item #946 "Case sensitive type check causes broken match for SVG" was fixed.
+ - Bug item #945 "Imagick load doesn't account for passed data string " was fixed.
+
+6.0.087 (2014-06-25)
+ - A bug affecting fitcell option in Multicell was fixed.
+
+6.0.086 (2014-06-20)
+ - Bug item #938 "Hyphenation-dash extends outside of cell" was fixed (collateral effect).
+
+6.0.085 (2014-06-19)
+ - Some example images were replaced.
+ - A race condition bug was fixed.
+ - Bug item #938 "Hyphenation-dash extends outside of cell" was fixed.
+
+6.0.084 (2014-06-13)
+ - A bug related to MultiCell fitcell feature was fixed.
+ - Bug item #931 "Documentation error for setPageFormat()" was fixed.
+
+6.0.083 (2014-05-29)
+ - Bug item #928 "setHtmlVSpace with HR element" was fixed.
+
+6.0.082 (2014-05-23)
+ - Bug item #926 "test statement instead of assignment used in tcpdf_fonts.php" was fixed.
+ - Bug item #925 "924 transparent images bug" was fixed.
+
+6.0.081 (2014-05-22)
+ - Bug item #922 "writehtml tables thead repeating" was fixed.
+ - Patch #71 "External and internal links, local and remote" wa applied.
+
+6.0.080 (2014-05-20)
+ - Bug item #921 "Fatal error in hyphenateText() function" was fixed.
+ - Bug item #923 "Automatic Hyphenation error" was fixed.
+ - Patch #70 "Augument TCPDFBarcode classes with ability to return raw png image data" was applied.
+
+6.0.079 (2014-05-19)
+ - Patch item #69 "Named destinations, HTML internal and external links" was merged.
+ - Bug item #920 "hyphenateText() should not hyphenate the content of style-tags in HTML mode" was fixed.
+ - Image method now trigs an error in case the cache is now writeable.
+ - Fixed issue with layer default status.
+
+6.0.078 (2014-05-12)
+ - A warning issue in addTTFfont() method was fixed.
+ - Fonts were updated to include cbbox metrics.
+
+6.0.077 (2014-05-06)
+ - A Datamatrix barcode bug was fixed.
+
+6.0.076 (2014-05-06)
+ - A bug in Datamatrix Base256 encoding was fixed.
+ - Merged fix for SVG use/clip-gradient.
+ - Now it is possible to prefix a page number in Link methods with the * character to avoid been changed when adding/deleting/moving pages (see example_045.php).
+
+6.0.075 (2014-05-05)
+ - Bug #917 "Using realtive Units like ex or em for images distort output in HTML mode" was fixed.
+
+6.0.074 (2014-05-03)
+ - Part of Bug #917 "Using realtive Units like ex or em for images distort output in HTML mode" was fixed.
+ - Bug #915 "Problem with SVG Image using Radial Gradients" was fixed.
+
+6.0.073 (2014-04-29)
+ - Bug #913 "Possible bug with line-height" was fixed.
+ - Bug #914 "MultiCell and FitCell" was fixed.
+ - Bug #915 "Problem with SVG Image using Radial Gradients" was fixed.
+
+6.0.072 (2014-04-27)
+ - Deprecated curly braces substring syntax was replaced with square braces.
+
+6.0.071 (2014-04-25)
+ - Bug #911 "error with buffered png pics" was fixed.
+
+6.0.070 (2014-04-24)
+ - Bug #910 "An SVG image is being cut off (with clipping mask) when you use align options" was fixed.
+
+6.0.069 (2014-04-24)
+ - Datamatrix Base256 encoding was fixed.
+
+6.0.068 (2014-04-22)
+ - Some Datamatrix barcode bugs were fixed.
+
+6.0.067 (2014-04-21)
+ - startLayer() method signature was changed to include a new "lock" parameter.
+
+6.0.066 (2014-04-20)
+ - Bug #908 "Linebreak is not considered when getting length of the next string" was fixed.
+
+6.0.065 (2014-04-10)
+ - Bug #905 "RGB percentage color bug in convertHTMLColorToDec()" was fixed.
+
+6.0.064 (2014-04-07)
+ - Header and Footer fonts are now set by default.
+ - Bug #904 "PDF corrupted" was fixed.
+
+6.0.063 (2014-04-03)
+ - Method TCPDF_IMAGES::_parsepng() was fixed to support transparency in Indexed images.
+
+6.0.062 (2014-03-02)
+ - The method startLayer() now accepts the NULL value for the $print parameter to not set the print layer option.
+
+6.0.061 (2014-02-18)
+ - Bug #893 "Parsing error on streamed xref for secured pdf" was fixed.
+
+6.0.060 (2014-02-16)
+ - Bug #891 "Error on parsing hexa fields" was fixed.
+ - Bug #892 "Parsing pdf with trailing space at start" was fixed.
+
+6.0.059 (2014-02-03)
+ - SVG 'use' support was imporved.
+
+6.0.058 (2014-01-31)
+ - Bug #886 "Bugs with SVG using and