/**
* Constructor
*
* @param string $file path to epub file to work on
* @throws Exception if metadata could not be loaded
*/
public function __construct($file)
{
// open file
$this->file = $file;
$zip = new ZipArchive();
if (!@$zip->open($this->file)) {
throw new Exception('Failed to read epub file');
}
// read container data
$data = $zip->getFromName('META-INF/container.xml');
if ($data == false) {
throw new Exception('Failed to access epub container data');
}
$xml = new DOMDocument();
$xml->registerNodeClass('DOMElement', 'EPubDOMElement');
$xml->loadXML($data);
$xpath = new EPubDOMXPath($xml);
$nodes = $xpath->query('//n:rootfiles/n:rootfile[@media-type="application/oebps-package+xml"]');
$this->meta = $nodes->item(0)->attr('full-path');
// load metadata
$data = $zip->getFromName($this->meta);
if (!$data) {
throw new Exception('Failed to access epub metadata');
}
$this->xml = new DOMDocument();
$this->xml->registerNodeClass('DOMElement', 'EPubDOMElement');
$this->xml->loadXML($data);
$this->xml->formatOutput = true;
$this->xpath = new EPubDOMXPath($this->xml);
$zip->close();
}
/**
* Constructor
*
* @param string $file path to epub file to work on
* @param string $zipClass class to handle zip
* @throws Exception if metadata could not be loaded
*/
public function __construct($file, $zipClass = 'clsTbsZip')
{
// open file
$this->file = $file;
$this->zip = new $zipClass();
if (!$this->zip->Open($this->file)) {
throw new Exception('Failed to read epub file');
}
// read container data
if (!$this->zip->FileExists(METADATA_FILE)) {
throw new Exception("Unable to find metadata.xml");
}
$data = $this->zip->FileRead(METADATA_FILE);
if ($data == false) {
throw new Exception('Failed to access epub container data');
}
$xml = new DOMDocument();
$xml->registerNodeClass('DOMElement', 'EPubDOMElement');
$xml->loadXML($data);
$xpath = new EPubDOMXPath($xml);
$nodes = $xpath->query('//n:rootfiles/n:rootfile[@media-type="application/oebps-package+xml"]');
$this->meta = $nodes->item(0)->attr('full-path');
// load metadata
if (!$this->zip->FileExists($this->meta)) {
throw new Exception("Unable to find " . $this->meta);
}
$data = $this->zip->FileRead($this->meta);
if (!$data) {
throw new Exception('Failed to access epub metadata');
}
$this->xml = new DOMDocument();
$this->xml->registerNodeClass('DOMElement', 'EPubDOMElement');
$this->xml->loadXML($data);
$this->xml->formatOutput = true;
$this->xpath = new EPubDOMXPath($this->xml);
}