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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Feed\Writer;
use Traversable;
abstract class FeedFactory
{
/**
* Create and return a Feed based on data provided.
*
* @param array|Traversable $data
* @throws Exception\InvalidArgumentException
* @return Feed
*/
public static function factory($data)
{
if (!is_array($data) && !$data instanceof Traversable) {
throw new Exception\InvalidArgumentException(sprintf(
'%s expects an array or Traversable argument; received "%s"',
__METHOD__,
(is_object($data) ? get_class($data) : gettype($data))
));
}
$feed = new Feed();
foreach ($data as $key => $value) {
// Setters
$key = static::convertKey($key);
$method = 'set' . $key;
if (method_exists($feed, $method)) {
switch ($method) {
case 'setfeedlink':
if (!is_array($value)) {
// Need an array
break;
}
if (!array_key_exists('link', $value) || !array_key_exists('type', $value)) {
// Need both keys to set this correctly
break;
}
$feed->setFeedLink($value['link'], $value['type']);
break;
default:
$feed->$method($value);
break;
}
continue;
}
// Entries
if ('entries' == $key) {
static::createEntries($value, $feed);
continue;
}
}
return $feed;
}
/**
* Normalize a key
*
* @param string $key
* @return string
*/
protected static function convertKey($key)
{
$key = str_replace('_', '', strtolower($key));
return $key;
}
/**
* Create and attach entries to a feed
*
* @param array|Traversable $entries
* @param Feed $feed
* @throws Exception\InvalidArgumentException
* @return void
*/
protected static function createEntries($entries, Feed $feed)
{
if (!is_array($entries) && !$entries instanceof Traversable) {
throw new Exception\InvalidArgumentException(sprintf(
'%s::factory expects the "entries" value to be an array or Traversable; received "%s"',
get_called_class(),
(is_object($entries) ? get_class($entries) : gettype($entries))
));
}
foreach ($entries as $data) {
if (!is_array($data) && !$data instanceof Traversable && !$data instanceof Entry) {
throw new Exception\InvalidArgumentException(sprintf(
'%s expects an array, Traversable, or Zend\Feed\Writer\Entry argument; received "%s"',
__METHOD__,
(is_object($data) ? get_class($data) : gettype($data))
));
}
// Use case 1: Entry item
if ($data instanceof Entry) {
$feed->addEntry($data);
continue;
}
// Use case 2: iterate item and populate entry
$entry = $feed->createEntry();
foreach ($data as $key => $value) {
$key = static::convertKey($key);
$method = 'set' . $key;
if (!method_exists($entry, $method)) {
continue;
}
$entry->$method($value);
}
$feed->addEntry($entry);
}
}
}