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File Name : Feed.php

<?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 Countable;
use Iterator;

/**
*/
class Feed extends AbstractFeed implements Iterator, Countable
{
    /**
     * Contains all entry objects
     *
     * @var array
     */
    protected $entries = [];

/**
     * A pointer for the iterator to keep track of the entries array
     *
     * @var int
     */
    protected $entriesKey = 0;

/**
     * Creates a new Zend\Feed\Writer\Entry data container for use. This is NOT
     * added to the current feed automatically, but is necessary to create a
     * container with some initial values preset based on the current feed data.
     *
     * @return \Zend\Feed\Writer\Entry
     */
    public function createEntry()
    {
        $entry = new Entry;
        if ($this->getEncoding()) {
            $entry->setEncoding($this->getEncoding());
        }
        $entry->setType($this->getType());
        return $entry;
    }

/**
     * Appends a Zend\Feed\Writer\Deleted object representing a new entry tombstone
     * to the feed data container's internal group of entries.
     *
     * @param Deleted $deleted
     * @return void
     */
    public function addTombstone(Deleted $deleted)
    {
        $this->entries[] = $deleted;
    }

/**
     * Creates a new Zend\Feed\Writer\Deleted data container for use. This is NOT
     * added to the current feed automatically, but is necessary to create a
     * container with some initial values preset based on the current feed data.
     *
     * @return Deleted
     */
    public function createTombstone()
    {
        $deleted = new Deleted;
        if ($this->getEncoding()) {
            $deleted->setEncoding($this->getEncoding());
        }
        $deleted->setType($this->getType());
        return $deleted;
    }

/**
     * Appends a Zend\Feed\Writer\Entry object representing a new entry/item
     * the feed data container's internal group of entries.
     *
     * @param Entry $entry
     * @return Feed
     */
    public function addEntry(Entry $entry)
    {
        $this->entries[] = $entry;
        return $this;
    }

/**
     * Removes a specific indexed entry from the internal queue. Entries must be
     * added to a feed container in order to be indexed.
     *
     * @param int $index
     * @throws Exception\InvalidArgumentException
     * @return Feed
     */
    public function removeEntry($index)
    {
        if (! isset($this->entries[$index])) {
            throw new Exception\InvalidArgumentException('Undefined index: ' . $index . '. Entry does not exist.');
        }
        unset($this->entries[$index]);

return $this;
    }

/**
     * Retrieve a specific indexed entry from the internal queue. Entries must be
     * added to a feed container in order to be indexed.
     *
     * @param int $index
     * @throws Exception\InvalidArgumentException
     */
    public function getEntry($index = 0)
    {
        if (isset($this->entries[$index])) {
            return $this->entries[$index];
        }
        throw new Exception\InvalidArgumentException('Undefined index: ' . $index . '. Entry does not exist.');
    }

/**
     * Orders all indexed entries by date, thus offering date ordered readable
     * content where a parser (or Homo Sapien) ignores the generic rule that
     * XML element order is irrelevant and has no intrinsic meaning.
     *
     * Using this method will alter the original indexation.
     *
     * @return Feed
     */
    public function orderByDate()
    {
        /**
         * Could do with some improvement for performance perhaps
         */
        $timestamp = time();
        $entries = [];
        foreach ($this->entries as $entry) {
            if ($entry->getDateModified()) {
                $timestamp = (int) $entry->getDateModified()->getTimestamp();
            } elseif ($entry->getDateCreated()) {
                $timestamp = (int) $entry->getDateCreated()->getTimestamp();
            }
            $entries[$timestamp] = $entry;
        }
        krsort($entries, SORT_NUMERIC);
        $this->entries = array_values($entries);

return $this;
    }

/**
     * Get the number of feed entries.
     * Required by the Iterator interface.
     *
     * @return int
     */
    public function count()
    {
        return count($this->entries);
    }

/**
     * Return the current entry
     *
     * @return Entry
     */
    public function current()
    {
        return $this->entries[$this->key()];
    }

/**
     * Return the current feed key
     *
     * @return mixed
     */
    public function key()
    {
        return $this->entriesKey;
    }

/**
     * Move the feed pointer forward
     *
     * @return void
     */
    public function next()
    {
        ++$this->entriesKey;
    }

/**
     * Reset the pointer in the feed object
     *
     * @return void
     */
    public function rewind()
    {
        $this->entriesKey = 0;
    }

/**
     * Check to see if the iterator is still valid
     *
     * @return bool
     */
    public function valid()
    {
        return 0 <= $this->entriesKey && $this->entriesKey < $this->count();
    }

/**
     * Attempt to build and return the feed resulting from the data set
     *
     * @param  string  $type The feed type "rss" or "atom" to export as
     * @param  bool    $ignoreExceptions
     * @throws Exception\InvalidArgumentException
     * @return string
     */
    public function export($type, $ignoreExceptions = false)
    {
        $this->setType(strtolower($type));
        $type = ucfirst($this->getType());
        if ($type !== 'Rss' && $type !== 'Atom') {
            throw new Exception\InvalidArgumentException('Invalid feed type specified: ' . $type . '.'
            . ' Should be one of "rss" or "atom".');
        }
        $renderClass = 'Zend\\Feed\\Writer\\Renderer\\Feed\\' . $type;
        $renderer = new $renderClass($this);
        if ($ignoreExceptions) {
            $renderer->ignoreExceptions();
        }
        return $renderer->render()->saveXml();
    }
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	www-data/www-data	0777	2022-01-04 08:43:00
..	dir	-	www-data/www-data	0777	2022-01-04 08:43:00
Exception	dir	-	www-data/www-data	0777	2022-01-04 08:43:00
Extension	dir	-	www-data/www-data	0777	2022-01-04 08:43:00
Renderer	dir	-	www-data/www-data	0777	2022-01-04 08:43:00
AbstractFeed.php	text/x-php	23.69 KB	www-data/www-data	0775	2018-08-01 07:23:20
Deleted.php	text/x-php	5.66 KB	www-data/www-data	0775	2018-08-01 07:23:20
Entry.php	text/x-php	19.9 KB	www-data/www-data	0775	2018-08-01 07:23:20
ExtensionManager.php	text/x-php	2.07 KB	www-data/www-data	0775	2018-08-01 07:23:20
ExtensionManagerInterface.php	text/x-php	670 B	www-data/www-data	0775	2018-08-01 07:23:20
ExtensionPluginManager.php	text/x-php	12.25 KB	www-data/www-data	0775	2018-08-01 07:23:20
Feed.php	text/x-php	6.25 KB	www-data/www-data	0775	2018-08-01 07:23:20
FeedFactory.php	text/x-php	3.99 KB	www-data/www-data	0775	2018-08-01 07:23:20
Source.php	text/x-php	384 B	www-data/www-data	0775	2018-08-01 07:23:20
StandaloneExtensionManager.php	text/x-php	3.06 KB	www-data/www-data	0775	2018-08-01 07:23:20
Version.php	text/x-php	391 B	www-data/www-data	0775	2018-08-01 07:23:20
Writer.php	text/x-php	7.51 KB	www-data/www-data	0775	2018-08-01 07:23:20

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