/**
* Parse the table of contents file and populate nav data
*/
public function parse()
{
$this->navData = array();
$doc = new ChaucerDomDocument();
$doc->loadHTMLFile($this->path);
$xpath = new DOMXpath($doc);
$xpath->registerNamespace('epub', 'http://www.idpf.org/2007/ops');
$parentElements = $xpath->query("//nav");
if (!is_null($parentElements)) {
foreach ($parentElements as $parentNode) {
if ($parentNode->getAttribute('epub:type') == 'toc') {
$this->navData = $this->parseTocNode($parentNode, $xpath, 0, 0);
}
}
}
}
/**
* Return transformed content.
*
* @return string
*/
public function getContent()
{
if ($this->pxeDoc) {
// Turning on output formatting is suitable for debugging purposes only
// $this->pxeDoc->formatOutput = true;
//
// Production usage requires this to be off,
// so that <span>abc</span><span>def</span> doesn't come out with a space like "abc def"
$this->pxeDoc->formatOutput = false;
if ($this->isDocument) {
return $this->pxeDoc->saveXML();
} else {
return $this->pxeDoc->saveXML($this->currentElement);
}
} else {
return '';
}
}
/**
* read the story that contains the information about hidden content
* @param string $backingStoryId
* @return boolean
*/
private function readXmlContentStory($backingStoryId)
{
$xmlContentStory = $this->tempDir . '/Stories/Story_' . $backingStoryId . '.xml';
if (!file_exists($xmlContentStory)) {
$this->idmlAssembler->getProgressUpdater()->setWarning($xmlContentStory . " does not exist.");
return false;
}
// create ChaucerDOMDocument and DOMXPath objects
$doc = new ChaucerDomDocument();
$b = $doc->load($xmlContentStory);
if ($b === false) {
return false;
}
$xpath = new DOMXPath($doc);
$hiddentags = $xpath->query("//XMLElement[@MarkupTag='XMLTag/ChaucerHidden']");
for ($i = 0; $i < $hiddentags->length; $i++) {
$tag = $hiddentags->item($i);
$this->iterativelyGetHiddenIds($tag, $this->chaucerHidden);
}
return true;
}