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<?php
/**
* Description of OnlineArticle
*
* @author Sander
*/
class PreprocessedArticle extends ContentProvider {
private $text;
private $images;
private $metadata = array();
private $imgCounter = 0;
public function __construct($textData, $imageLinks, $metadata) {
$this->text = $textData;
$this->metadata = $metadata;
$this->images = $this->downloadImages($imageLinks);
}
/**
* Create a Preprocessed article from a json string
* @param string $json JSON data. Should be of the following format:
* {"text": "TEXT", "images: ["imageURL1", "imageURL2"], "metadata": {"key": "value"}}
*
* Note: Any image tags should have the recindex attribute set to the appropriate index (the
* same index as the image in the array)
* @return PreprocessedArticle The generated preprocessed array
*/
static public function CreateFromJson($json){
$data = json_decode($json);
return new PreprocessedArticle($data["text"], $data["images"], $data["metadata"]);
}
/**
* Get the text data to be integrated in the MOBI file
* @return string
*/
public function getTextData(){
return $this->text;
}
/**
* Get the images (an array containing the jpeg data). Array entry 0 will
* correspond to image record 0.
* @return array
*/
public function getImages(){
return $this->images;
}
/**
* Get the metadata in the form of a hashtable (for example, title or author).
* @return array
*/
public function getMetaData(){
return $this->metadata;
}
/**
*
* @param DOMElement $dom
* @return array
*/
private function downloadImages($links){
$images = array();
foreach($links as $link) {
$imgFile = @imagecreatefromstring(Http::Request($link));
if($imgFile === false){
$imgFile = @imagecreate(1, 1);
$black = @imagecolorallocate($imgFile, 255, 255, 255);
}
if($imgFile !== false){
@imagefilter($imgFile, IMG_FILTER_GRAYSCALE);
ob_start();
@imagejpeg($imgFile);
$image = ob_get_contents();
ob_end_clean();
$images[$this->imgCounter] = new FileRecord(new Record($image));
imagedestroy($imgFile);
$this->imgCounter++;
}
}
return $images;
}
}
?>
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