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move readability libs to system location

This commit is contained in:
Andrew Dolgov 2015-07-08 13:44:45 +03:00
parent 25c747f576
commit 8b08d9d740
6 changed files with 126 additions and 1218 deletions
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0
plugins/af_readability/classes/JSLikeHTMLElement.php → lib/readability/JSLikeHTMLElement.php
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125
plugins/af_readability/classes/Readability.php → lib/readability/Readability.php
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@ -2,6 +2,8 @@
/**
* Arc90's Readability ported to PHP for FiveFilters.org
* Based on readability.js version 1.7.1 (without multi-page support)
* Updated to allow HTML5 parsing with html5lib
* Updated with lightClean mode to preserve more images and youtube/vimeo/viddler embeds
* ------------------------------------------------------
* Original URL: http://lab.arc90.com/experiments/readability/js/readability.js
* Arc90's project URL: http://lab.arc90.com/experiments/readability/
@ -10,7 +12,7 @@
* More information: http://fivefilters.org/content-only/
* License: Apache License, Version 2.0
* Requires: PHP5
* Date: 2010-10-29
* Date: 2012-09-19
*
* Differences between the PHP port and the original
* ------------------------------------------------------
@ -44,9 +46,10 @@
// This class allows us to do JavaScript like assignements to innerHTML
require_once(dirname(__FILE__).'/JSLikeHTMLElement.php');
libxml_use_internal_errors(true);
// Alternative usage (for testing only!)
// uncomment the lins below and call Readability.php in your browser
// uncomment the lines below and call Readability.php in your browser
// passing it the URL of the page you'd like content from, e.g.:
// Readability.php?url=http://medialens.org/alerts/09/090615_the_guardian_climate.php
@ -72,6 +75,7 @@ class Readability
public $dom;
public $url = null; // optional - URL where HTML was retrieved
public $debug = false;
public $lightClean = true; // preserves more content (experimental) added 2012-09-19
protected $body = null; //
protected $bodyCache = null; // Cache the body HTML in case we need to re-use it later
protected $flags = 7; // 1 | 2 | 4; // Start with all flags set.
@ -82,17 +86,17 @@ class Readability
* Defined up here so we don't instantiate them repeatedly in loops.
**/
public $regexps = array(
'unlikelyCandidates' => '/combx|comment|community|disqus|extra|foot|header|menu|remark|rss|shoutbox|sidebar|sponsor|ad-break|agegate|pagination|pager|popup|tweet|twitter/i',
'unlikelyCandidates' => '/combx|comment|community|disqus|extra|foot|header|menu|remark|rss|shoutbox|sidebar|sponsor|ad-break|agegate|pagination|pager|popup/i',
'okMaybeItsACandidate' => '/and|article|body|column|main|shadow/i',
'positive' => '/article|body|content|entry|hentry|main|page|pagination|post|text|blog|story/i',
'negative' => '/combx|comment|com-|contact|foot|footer|footnote|masthead|media|meta|outbrain|promo|related|scroll|shoutbox|sidebar|sponsor|shopping|tags|tool|widget/i',
'positive' => '/article|body|content|entry|hentry|main|page|attachment|pagination|post|text|blog|story/i',
'negative' => '/combx|comment|com-|contact|foot|footer|_nav|footnote|masthead|media|meta|outbrain|promo|related|scroll|shoutbox|sidebar|sponsor|shopping|tags|tool|widget/i',
'divToPElements' => '/<(a|blockquote|dl|div|img|ol|p|pre|table|ul)/i',
'replaceBrs' => '/(<br[^>]*>[ \n\r\t]*){2,}/i',
'replaceFonts' => '/<(\/?)font[^>]*>/i',
// 'trimRe' => '/^\s+|\s+$/g', // PHP has trim()
'normalize' => '/\s{2,}/',
'killBreaks' => '/(<br\s*\/?>(\s|&nbsp;?)*){1,}/',
'video' => '/http:\/\/(www\.)?(youtube|vimeo)\.com/i',
'video' => '!//(player\.|www\.)?(youtube|vimeo|viddler)\.com!i',
'skipFootnoteLink' => '/^\s*(\[?[a-z0-9]{1,2}\]?|^|edit|citation needed)\s*$/i'
);
@ -105,19 +109,24 @@ class Readability
* Create instance of Readability
* @param string UTF-8 encoded string
* @param string (optional) URL associated with HTML (used for footnotes)
* @param string which parser to use for turning raw HTML into a DOMDocument (either 'libxml' or 'html5lib')
*/
function __construct($html, $url=null)
function __construct($html, $url=null, $parser='libxml')
{
$this->url = $url;
/* Turn all double br's into p's */
$html = preg_replace($this->regexps['replaceBrs'], '</p><p>', $html);
$html = preg_replace($this->regexps['replaceFonts'], '<$1span>', $html);
$html = mb_convert_encoding($html, 'HTML-ENTITIES', "UTF-8");
if (trim($html) == '') $html = '<html></html>';
if ($parser=='html5lib' && ($this->dom = HTML5_Parser::parse($html))) {
// all good
} else {
$this->dom = new DOMDocument();
$this->dom->preserveWhiteSpace = false;
$this->dom->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
if (trim($html) == '') $html = '<html></html>';
@$this->dom->loadHTML($html);
$this->url = $url;
}
$this->dom->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
}
/**
@ -150,6 +159,7 @@ class Readability
**/
public function init()
{
if (!isset($this->dom->documentElement)) return false;
$this->removeScripts($this->dom);
//die($this->getInnerHTML($this->dom->documentElement));
@ -212,7 +222,7 @@ class Readability
* Debug
*/
protected function dbg($msg) {
if ($this->debug) echo '* ',$msg, '<br />', "\n";
if ($this->debug) echo '* ',$msg, "\n";
}
/**
@ -293,7 +303,6 @@ class Readability
$this->body = $this->dom->createElement('body');
$this->dom->documentElement->appendChild($this->body);
}
$this->body->setAttribute('id', 'readabilityBody');
/* Remove all style tags in head */
@ -420,7 +429,7 @@ class Readability
* If there is only one h2, they are probably using it
* as a header and not a subheader, so remove it since we already have a header.
***/
if ($articleContent->getElementsByTagName('h2')->length == 1) {
if (!$this->lightClean && ($articleContent->getElementsByTagName('h2')->length == 1)) {
$this->clean($articleContent, 'h2');
}
$this->clean($articleContent, 'iframe');
@ -439,8 +448,9 @@ class Readability
$imgCount = $articleParagraphs->item($i)->getElementsByTagName('img')->length;
$embedCount = $articleParagraphs->item($i)->getElementsByTagName('embed')->length;
$objectCount = $articleParagraphs->item($i)->getElementsByTagName('object')->length;
$iframeCount = $articleParagraphs->item($i)->getElementsByTagName('iframe')->length;
if ($imgCount === 0 && $embedCount === 0 && $objectCount === 0 && $this->getInnerText($articleParagraphs->item($i), false) == '')
if ($imgCount === 0 && $embedCount === 0 && $objectCount === 0 && $iframeCount === 0 && $this->getInnerText($articleParagraphs->item($i), false) == '')
{
$articleParagraphs->item($i)->parentNode->removeChild($articleParagraphs->item($i));
}
@ -664,9 +674,20 @@ class Readability
if ($topCandidate === null || strtoupper($topCandidate->tagName) == 'BODY')
{
$topCandidate = $this->dom->createElement('div');
$topCandidate->innerHTML = ($page instanceof DOMDocument) ? $page->saveXML($page->documentElement) : $page->innerHTML;
if ($page instanceof DOMDocument) {
if (!isset($page->documentElement)) {
// we don't have a body either? what a mess! :)
} else {
$topCandidate->innerHTML = $page->documentElement->innerHTML;
$page->documentElement->innerHTML = '';
$this->reinitBody();
$page->documentElement->appendChild($topCandidate);
}
} else {
$topCandidate->innerHTML = $page->innerHTML;
$page->innerHTML = '';
$page->appendChild($topCandidate);
}
$this->initializeNode($topCandidate);
}
@ -677,7 +698,11 @@ class Readability
$articleContent = $this->dom->createElement('div');
$articleContent->setAttribute('id', 'readability-content');
$siblingScoreThreshold = max(10, ((int)$topCandidate->getAttribute('readability')) * 0.2);
$siblingNodes = $topCandidate->parentNode->childNodes;
$siblingNodes = @$topCandidate->parentNode->childNodes;
if (!isset($siblingNodes)) {
$siblingNodes = new stdClass;
$siblingNodes->length = 0;
}
for ($s=0, $sl=$siblingNodes->length; $s < $sl; $s++)
{
@ -769,7 +794,9 @@ class Readability
**/
if (strlen($this->getInnerText($articleContent, false)) < 250)
{
$this->body->innerHTML = $this->bodyCache;
// TODO: find out why element disappears sometimes, e.g. for this URL http://www.businessinsider.com/6-hedge-fund-etfs-for-average-investors-2011-7
// in the meantime, we check and create an empty element if it's not there.
$this->reinitBody();
if ($this->flagIsActive(self::FLAG_STRIP_UNLIKELYS)) {
$this->removeFlag(self::FLAG_STRIP_UNLIKELYS);
@ -846,6 +873,7 @@ class Readability
* @return void
*/
public function cleanStyles($e) {
if (!is_object($e)) return;
$elems = $e->getElementsByTagName('*');
foreach ($elems as $elem) {
$elem->removeAttribute('style');
@ -928,13 +956,15 @@ class Readability
* Clean a node of all elements of type "tag".
* (Unless it's a youtube/vimeo video. People love movies.)
*
* Updated 2012-09-18 to preserve youtube/vimeo iframes
*
* @param DOMElement $e
* @param string $tag
* @return void
*/
public function clean($e, $tag) {
$targetList = $e->getElementsByTagName($tag);
$isEmbed = ($tag == 'object' || $tag == 'embed');
$isEmbed = ($tag == 'iframe' || $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. */
@ -999,6 +1029,7 @@ class Readability
$img = $tagsList->item($i)->getElementsByTagName('img')->length;
$li = $tagsList->item($i)->getElementsByTagName('li')->length-100;
$input = $tagsList->item($i)->getElementsByTagName('input')->length;
$a = $tagsList->item($i)->getElementsByTagName('a')->length;
$embedCount = 0;
$embeds = $tagsList->item($i)->getElementsByTagName('embed');
@ -1007,28 +1038,69 @@ class Readability
$embedCount++;
}
}
$embeds = $tagsList->item($i)->getElementsByTagName('iframe');
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 > $p ) {
if ($this->lightClean) {
$this->dbg('Light clean...');
if ( ($img > $p) && ($img > 4) ) {
$this->dbg(' more than 4 images and more image elements than paragraph elements');
$toRemove = true;
} else if ($li > $p && $tag != 'ul' && $tag != 'ol') {
$this->dbg(' too many <li> elements, and parent is not <ul> or <ol>');
$toRemove = true;
} else if ( $input > floor($p/3) ) {
$this->dbg(' too many <input> elements');
$toRemove = true;
} else if ($contentLength < 25 && ($img === 0 || $img > 2) ) {
} else if ($contentLength < 10 && ($embedCount === 0 && ($img === 0 || $img > 2))) {
$this->dbg(' content length less than 10 chars, 0 embeds and either 0 images or more than 2 images');
$toRemove = true;
} else if($weight < 25 && $linkDensity > 0.2) {
$this->dbg(' weight smaller than 25 and link density above 0.2');
$toRemove = true;
} else if($a > 2 && ($weight >= 25 && $linkDensity > 0.5)) {
$this->dbg(' more than 2 links and weight above 25 but link density greater than 0.5');
$toRemove = true;
} else if($embedCount > 3) {
$this->dbg(' more than 3 embeds');
$toRemove = true;
}
} else {
$this->dbg('Standard clean...');
if ( $img > $p ) {
$this->dbg(' more image elements than paragraph elements');
$toRemove = true;
} else if ($li > $p && $tag != 'ul' && $tag != 'ol') {
$this->dbg(' too many <li> elements, and parent is not <ul> or <ol>');
$toRemove = true;
} else if ( $input > floor($p/3) ) {
$this->dbg(' too many <input> elements');
$toRemove = true;
} else if ($contentLength < 25 && ($img === 0 || $img > 2) ) {
$this->dbg(' content length less than 25 chars and 0 images, or more than 2 images');
$toRemove = true;
} else if($weight < 25 && $linkDensity > 0.2) {
$this->dbg(' weight smaller than 25 and link density above 0.2');
$toRemove = true;
} else if($weight >= 25 && $linkDensity > 0.5) {
$this->dbg(' weight above 25 but link density greater than 0.5');
$toRemove = true;
} else if(($embedCount == 1 && $contentLength < 75) || $embedCount > 1) {
$this->dbg(' 1 embed and content length smaller than 75 chars, or more than one embed');
$toRemove = true;
}
}
if ($toRemove) {
//$this->dbg('Removing: '.$tagsList->item($i)->innerHTML);
$tagsList->item($i)->parentNode->removeChild($tagsList->item($i));
}
}
@ -1063,5 +1135,18 @@ class Readability
public function removeFlag($flag) {
$this->flags = $this->flags & ~$flag;
}
/**
* Will recreate previously deleted body property
*
* @return void
*/
protected function reinitBody() {
if (!isset($this->body->childNodes)) {
$this->body = $this->dom->createElement('body');
$this->body->innerHTML = $this->bodyCache;
}
}
}
?>

2
plugins/af_readability/init.php
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@ -96,7 +96,7 @@ class Af_Readability extends Plugin {
$key = array_search($article["feed"]["id"], $enabled_feeds);
if ($key === FALSE) return $article;
if (!class_exists("Readability")) require_once(__DIR__ . "/classes/Readability.php");
if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
if (function_exists("curl_init")) {
$ch = curl_init($article["link"]);

110
plugins/af_redditimgur/classes/JSLikeHTMLElement.php
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@ -1,110 +0,0 @@
<?php
/**
* JavaScript-like HTML DOM Element
*
* This class extends PHP's DOMElement to allow
* users to get and set the innerHTML property of
* HTML elements in the same way it's done in
* JavaScript.
*
* Example usage:
* @code
* require_once 'JSLikeHTMLElement.php';
* header('Content-Type: text/plain');
* $doc = new DOMDocument();
* $doc->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
* $doc->loadHTML('<div><p>Para 1</p><p>Para 2</p></div>');
* $elem = $doc->getElementsByTagName('div')->item(0);
*
* // print innerHTML
* echo $elem->innerHTML; // prints '<p>Para 1</p><p>Para 2</p>'
* echo "\n\n";
*
* // set innerHTML
* $elem->innerHTML = '<a href="http://fivefilters.org">FiveFilters.org</a>';
* echo $elem->innerHTML; // prints '<a href="http://fivefilters.org">FiveFilters.org</a>'
* echo "\n\n";
*
* // print document (with our changes)
* echo $doc->saveXML();
* @endcode
*
* @author Keyvan Minoukadeh - http://www.keyvan.net - keyvan@keyvan.net
* @see http://fivefilters.org (the project this was written for)
*/
class JSLikeHTMLElement extends DOMElement
{
/**
* Used for setting innerHTML like it's done in JavaScript:
* @code
* $div->innerHTML = '<h2>Chapter 2</h2><p>The story begins...</p>';
* @endcode
*/
public function __set($name, $value) {
if ($name == 'innerHTML') {
// first, empty the element
for ($x=$this->childNodes->length-1; $x>=0; $x--) {
$this->removeChild($this->childNodes->item($x));
}
// $value holds our new inner HTML
if ($value != '') {
$f = $this->ownerDocument->createDocumentFragment();
// appendXML() expects well-formed markup (XHTML)
$result = @$f->appendXML($value); // @ to suppress PHP warnings
if ($result) {
if ($f->hasChildNodes()) $this->appendChild($f);
} else {
// $value is probably ill-formed
$f = new DOMDocument();
$value = mb_convert_encoding($value, 'HTML-ENTITIES', 'UTF-8');
// Using <htmlfragment> will generate a warning, but so will bad HTML
// (and by this point, bad HTML is what we've got).
// We use it (and suppress the warning) because an HTML fragment will
// be wrapped around <html><body> tags which we don't really want to keep.
// Note: despite the warning, if loadHTML succeeds it will return true.
$result = @$f->loadHTML('<htmlfragment>'.$value.'</htmlfragment>');
if ($result) {
$import = $f->getElementsByTagName('htmlfragment')->item(0);
foreach ($import->childNodes as $child) {
$importedNode = $this->ownerDocument->importNode($child, true);
$this->appendChild($importedNode);
}
} else {
// oh well, we tried, we really did. :(
// this element is now empty
}
}
}
} else {
$trace = debug_backtrace();
trigger_error('Undefined property via __set(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
}
}
/**
* Used for getting innerHTML like it's done in JavaScript:
* @code
* $string = $div->innerHTML;
* @endcode
*/
public function __get($name)
{
if ($name == 'innerHTML') {
$inner = '';
foreach ($this->childNodes as $child) {
$inner .= $this->ownerDocument->saveXML($child);
}
return $inner;
}
$trace = debug_backtrace();
trigger_error('Undefined property via __get(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
return null;
}
public function __toString()
{
return '['.$this->tagName.']';
}
}
?>

1067
plugins/af_redditimgur/classes/Readability.php
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2
plugins/af_redditimgur/init.php
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@ -243,7 +243,7 @@ class Af_RedditImgur extends Plugin {
if (function_exists("curl_init") && !$found && $this->host->get($this, "enable_readability") &&
mb_strlen(strip_tags($article["content"])) <= 150) {
if (!class_exists("Readability")) require_once(__DIR__ . "/classes/Readability.php");
if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
$content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);