/**
* Determines the total depth of a multi-dimensional array or object.
* Has two methods of determining depth: based on recursive depth, or based on tab indentation (faster).
*
* @uses Titon\Utility\Converter
*
* @param array|object $set
* @return int
* @throws \Titon\Utility\Exception\InvalidTypeException
*/
public static function depth($set)
{
if (is_object($set)) {
$set = Converter::toArray($set);
} else {
if (!is_array($set)) {
throw new InvalidTypeException('Value passed must be an array');
}
}
if (!$set) {
return 0;
}
$depth = 1;
foreach ($set as $value) {
if (is_array($value)) {
$count = static::depth($value) + 1;
if ($count > $depth) {
$depth = $count;
}
}
}
return $depth;
}
/**
* Processes the feed and rebuilds an array based on the feeds type (RSS, RDF, Atom).
*
* @param HttpSocketResponse $response
* @param array $query
* @param string $source
* @return bool
*/
protected function _process(HttpSocketResponse $response, $query, $source)
{
if (!$response->isOk()) {
return array();
}
$feed = Converter::toArray($response->body());
$clean = array();
if (!empty($query['root']) && !empty($feed[$query['feed']['root']])) {
$items = $feed[$query['feed']['root']];
} else {
// RSS
if (isset($feed['channel']) && isset($feed['channel']['item'])) {
$items = $feed['channel']['item'];
// RDF
} else {
if (isset($feed['item'])) {
$items = $feed['item'];
// Atom
} else {
if (isset($feed['entry'])) {
$items = $feed['entry'];
// XML
} else {
$items = $feed;
}
}
}
}
if (empty($items) || !is_array($items)) {
return $clean;
}
// Gather elements
$elements = array('title' => array('title'), 'guid' => array('guid', 'id'), 'date' => array('date', 'pubDate', 'published', 'updated'), 'link' => array('link', 'origLink'), 'image' => array('image', 'thumbnail', 'enclosure'), 'author' => array('author', 'writer', 'editor', 'user'), 'source' => array('source'), 'description' => array('description', 'desc', 'summary', 'content', 'text'));
if (is_array($query['fields'])) {
$elements = array_merge_recursive($elements, $query['fields']);
}
// Loop the feed
foreach ($items as $item) {
$data = array();
foreach ($elements as $element => $keys) {
if (isset($keys['attributes'])) {
$attributes = $keys['attributes'];
unset($keys['attributes']);
} else {
$attributes = array('value', 'href', 'src', 'name', 'label', 'url');
}
if (isset($keys['keys'])) {
$keys = $keys['keys'];
}
foreach ($keys as $key) {
if (isset($item[$key]) && empty($data[$element])) {
if ($value = $this->_extract($item[$key], $attributes)) {
$data[$element] = $value;
break;
}
}
}
}
if (empty($data['link'])) {
trigger_error(sprintf('Feed %s does not have a valid link element', $source), E_USER_NOTICE);
continue;
}
if (empty($data['source']) && $source) {
$data['source'] = (string) $source;
}
// Determine how to sort
$sortBy = $query['feed']['sort'];
if (isset($data[$sortBy])) {
$sort = $data[$sortBy];
} else {
if (isset($data['date'])) {
$sort = $data['date'];
} else {
$sort = null;
}
}
if ($sortBy === 'date' && $sort) {
$sort = strtotime($sort);
} else {
if (!$sort) {
$sort = microtime();
}
}
if ($data) {
$clean[$sort] = $data;
}
}
return $clean;
}
/**
* Format the response into the right content type.
*
* @param string $type
* @return string
*/
protected function _format($type)
{
$response = array('success' => $this->_success, 'data' => $this->_data);
if ($this->_code) {
$response['code'] = $this->_code;
}
switch (strtolower($type)) {
case 'json':
$format = Converter::toJson($response);
break;
case 'xml':
$format = Converter::toXml($response);
break;
case 'html':
case 'text':
default:
$format = (string) $this->_data;
break;
}
return $format;
}
function to_xml($data)
{
return Converter::toXml($data);
}
public function toXml($root = 'root')
{
return Converter::toXml($this->toArray(), $root);
}
