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<?php
/**
* Description of MultipleFileHandler
*
* @author Sander
*/
abstract class MultipleFileHandler extends ContentProvider {
/**
* @var array
*/
private $files = array();
/**
* @var array
*/
private $images = array();
/**
* @var array
*/
private $metadata = array();
private $toc = array();
/**
* Add a page to the file
* @param string $contents Contents of the chapter/page
* @param string $title Optional, title of the chapter/page. Will automatically add a h2
* before the contents
*/
public function addPage($contents, $title = ""){
if($title != ""){
//TODO: Add in TOC (and add a way of generating it
$contents = "<h2>".$title."</h2>".$contents."<mbp:pagebreak>";
}
$pos = 0;
if(sizeof($this->toc) > 0){
$lastToc = $this->toc[sizeof($this->toc)-1];
$lastFile = $this->files[sizeof($this->files)-1];
$pos = $lastToc["pos"] + strlen($lastFile) + 1;
}
$this->files[] = $contents;
$this->toc[] = array("title"=>$title, "pos"=>$pos);
}
/**
* Add an image to the file
* @param string $imageContents Data string containing the binary data of the image
* @return int The reference of the image
*/
public function addImage($imageContents){
$this->images[] = $imageContents;
return sizeof($this->images)-1;
}
/**
* Add an image to the file
* @param string $url Url to the image
* @return int The reference of the image, false if the image couldn't be downloaded
*/
public function addImageFromUrl($url){
$image = ImageHandler::DownloadImage($url);
if($image === false) return false;
return $this->addImage($image);
}
/**
* Set the metadata
* @param string $key Key
* @param string $value Value
*/
public function setMetadata($key, $value){
$this->metadata[$key] = $value;
}
/**
* Get the text data to be integrated in the MOBI file
* @return string
*/
public function getTextData(){
$data = implode("\n", $this->files);
$begin = "<html><head><guide><reference title='CONTENT' type='toc' filepos=0000000000 /></guide></head><body>";
$beforeTOC = $begin.$data;
$tocPos = strlen($beforeTOC);
$toc = $this->generateTOC(strlen($begin));
$customBegin = "<html><head><guide><reference title='CONTENT' type='toc' filepos=".$this->forceLength($tocPos, 10)." /></guide></head><body>";
$data = $customBegin.$data.$toc."</body></html>";
return $data;
}
public function forceLength($n, $l){
$str = $n."";
$cur = strlen($str);
while($cur < $l){
$str = "0".$str;
$cur++;
}
return $str;
}
public function generateTOC($base = 0){
$toc = "<h2>Contents</h2>";
$toc .= "<blockquote><table summary='Table of Contents'><b><col/><col/><tbody>";
for($i = 0, $len = sizeof($this->toc); $i < $len; $i++){
$entry = $this->toc[$i];
$position = $entry["pos"]+$base;
$toc .= "<tr><td>".($i+1).".</td><td><a filepos=".$position.">".$entry["title"]."</a></td></tr>";
}
$toc .= "</tbody></b></table></blockquote>";
return $toc;
}
/**
* 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;
}
}
?>
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