/**
* Renders the variable.
*
* @param string $data
* @return string
*/
public function render($data)
{
if ($this->form !== '') {
$return = Container::getData()->getVariable($this->name . '-' . $this->form);
if ($return !== null) {
return $return;
}
if (is_object(Container::getAbbreviation()) == true) {
$return = Container::getAbbreviation()->get($this->name, $this->form);
}
if ($return !== null) {
return $return;
}
}
// special cases
switch ($this->name) {
case 'title-short':
$return = Container::getData()->getVariable('shortTitle');
if ($return !== null) {
return $return;
}
break;
case 'title':
if ($this->form == 'short') {
$return = Container::getData()->getVariable('shortTitle');
if ($return !== null) {
return $return;
}
}
break;
case 'citation-label':
$return = Container::getData()->getVariable($this->name);
if ($return !== null) {
return $return;
}
// first 4 letters from the first two author family names and last to year digits
$authors = Container::getData()->getVariable('author');
$format = new Format();
if (isset($authors[0]['family']) == true && $format->format('issued') == true) {
$year = $format->getData();
if (isset($year[0]['year']) == true) {
switch (count($authors)) {
case 1:
$author = substr($authors[0]['family'], 0, 4);
break;
case 2:
$author = substr($authors[0]['family'], 0, 2) . substr($authors[1]['family'], 0, 2);
break;
default:
$author = '';
for ($i = 0; $i < 4; $i++) {
if (preg_match('/[A-Z]/', $authors[$i]['family'], $match) == 1) {
$author .= $match[0];
}
}
break;
}
$length = strlen($year[0]['year']);
return $author . substr($year[0]['year'], $length - 2, $length);
}
}
break;
case 'page':
$format = Container::getContext()->getValue('pageRangeFormat');
if (is_object($format) == true) {
return $format->format(Container::getData()->getVariable($this->name));
}
break;
case 'first-reference-note-number':
// number of a preceding note containing the first reference to the item
if (Container::getCitationItem()->get('noteIndex') !== null || Container::getCitationItem()->get('index') !== null) {
$first = Container::getRendered()->getPositionOfFirstId(Container::getActualId());
if ($first !== null && $first < Container::getRendered()->getLength()) {
return $first;
}
}
break;
}
$return = Container::getData()->getVariable($this->name);
if ($return !== null) {
return $return;
}
// retrieve variables form citations
if (Container::getContext()->getName() == 'citation' && Container::getCitationItem() !== false) {
$return = Container::getCitationItem()->get($this->name);
if ($return !== null) {
return $return;
}
}
return '';
}
/**
* Render the element.
*
* @param string $data
* @return string
*/
public function render($data)
{
switch ($this->variable) {
case 'author':
case 'collection-editor':
case 'composer':
case 'container-author':
case 'director':
case 'editor':
case 'editorial-director':
case 'illustrator':
case 'interviewer':
case 'original-author':
case 'recipient':
case 'reviewed-author':
case 'translator':
$name = new Name(new \SimpleXMLElement('<name form="long" name-as-sort-order="all"/>'));
return $name->render(Container::getData()->getVariable($this->variable));
break;
case 'accessed':
case 'container':
case 'event-date':
case 'issued':
case 'original-date':
case 'submitted':
// 00000000 represent the first date and if existing a second date of a date range
$format = new Format();
if ($format->format($this->variable) == true) {
$data = $format->getData();
$first = $this->formatDate($data[0]);
$second = '00000000';
if (isset($data[1]) == true) {
$second = $this->formatDate($data[1]);
if ($second < $first) {
return $second . $first;
}
return $first . $second;
}
return $first . $second;
}
// put empty dates in bibliographies at the end
if (Container::getContext()->getName() == 'bibliography') {
return '';
}
return '0000000000000000';
break;
case 'chapter-number':
case 'collection-number':
case 'edition':
case 'issue':
case 'number':
case 'number-of-pages':
case 'number-of-volumes':
case 'volume':
return (int) Container::getData()->getVariable($this->variable);
break;
default:
return preg_replace('/(<.*?>)(.*?)(<\\/.*?>)/', '$2', Container::getData()->getVariable($this->variable));
break;
}
}
/**
* Parses the date-values.
* @return boolean
*/
private function formatDate()
{
$format = new Format();
if ($format->format($this->variable) == true) {
$this->data = $format->getData();
return true;
}
return false;
}