77 lines
2.4 KiB
PHP
77 lines
2.4 KiB
PHP
<?php
|
||
class ElsevierBridge extends BridgeAbstract{
|
||
const MAINTAINER = 'Pierre Mazière';
|
||
const NAME = 'Elsevier journals recent articles';
|
||
const URI = 'http://www.journals.elsevier.com/';
|
||
const DESCRIPTION = 'Returns the recent articles published in Elsevier journals';
|
||
|
||
const PARAMETERS = array( array(
|
||
'j'=>array(
|
||
'name'=>'Journal name',
|
||
'required'=>true,
|
||
'exampleValue'=>'academic-pediactrics',
|
||
'title'=>'Insert html-part of your journal'
|
||
)
|
||
));
|
||
|
||
// Extracts the list of names from an article as string
|
||
private function ExtractArticleName ($article){
|
||
$names = $article->find('small', 0);
|
||
if($names)
|
||
return trim($names->plaintext);
|
||
return '';
|
||
}
|
||
|
||
// Extracts the timestamp from an article
|
||
private function ExtractArticleTimestamp ($article){
|
||
$time = $article->find('.article-info', 0);
|
||
if($time){
|
||
$timestring = trim($time->plaintext);
|
||
/*
|
||
The format depends on the age of an article:
|
||
- Available online 29 July 2016
|
||
- July 2016
|
||
- May–June 2016
|
||
*/
|
||
if(preg_match('/\S*(\d+\s\S+\s\d{4})/ims', $timestring, $matches)){
|
||
return strtotime($matches[0]);
|
||
} elseif (preg_match('/[A-Za-z]+\-([A-Za-z]+\s\d{4})/ims', $timestring, $matches)){
|
||
return strtotime($matches[0]);
|
||
} elseif (preg_match('/([A-Za-z]+\s\d{4})/ims', $timestring, $matches)){
|
||
return strtotime($matches[0]);
|
||
} else {
|
||
return 0;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
// Extracts the content from an article
|
||
private function ExtractArticleContent ($article){
|
||
$content = $article->find('.article-content', 0);
|
||
if($content){
|
||
return trim($content->plaintext);
|
||
}
|
||
return '';
|
||
}
|
||
|
||
public function collectData(){
|
||
$uri = self::URI . $this->getInput('j') . '/recent-articles/';
|
||
$html = $this->getSimpleHTMLDOM($uri) or $this->returnServerError('No results for Elsevier journal '.$this->getInput('j'));
|
||
|
||
foreach($html->find('.pod-listing') as $article){
|
||
$item = array();
|
||
$item['uri'] = $article->find('.pod-listing-header>a',0)->getAttribute('href').'?np=y';
|
||
$item['title'] = $article->find('.pod-listing-header>a',0)->plaintext;
|
||
$item['author'] = $this->ExtractArticleName($article);
|
||
$item['timestamp'] = $this->ExtractArticleTimestamp($article);
|
||
$item['content'] = $this->ExtractArticleContent($article);
|
||
$this->items[] = $item;
|
||
}
|
||
}
|
||
|
||
public function getCacheDuration(){
|
||
return 43200; // 12h
|
||
}
|
||
}
|
||
?>
|