<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Feed_Writer
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**
* @see Zend_Date
*/
require_once 'Zend/Date.php';
/**
* @see Zend_Date
*/
require_once 'Zend/Uri.php';
/**
* @see Zend_Feed_Writer
*/
require_once 'Zend/Feed/Writer.php';
/**
* @see Zend_Feed_Writer_Entry
*/
require_once 'Zend/Feed/Writer/Entry.php';
/**
* @see Zend_Feed_Writer_Deleted
*/
require_once 'Zend/Feed/Writer/Deleted.php';
/**
* @see Zend_Feed_Writer_Renderer_Feed_Atom
*/
require_once 'Zend/Feed/Writer/Renderer/Feed/Atom.php';
/**
* @see Zend_Feed_Writer_Renderer_Feed_Rss
*/
require_once 'Zend/Feed/Writer/Renderer/Feed/Rss.php';
require_once 'Zend/Feed/Writer/Feed/FeedAbstract.php';
/**
* @category Zend
* @package Zend_Feed_Writer
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Feed_Writer_Feed extends Zend_Feed_Writer_Feed_FeedAbstract
implements Iterator, Countable
{
/**
* Contains all entry objects
*
* @var array
*/
protected $_entries = array();
/**
* 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()
{
$entry = new Zend_Feed_Writer_Entry;
if ($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 Zend_Feed_Writer_Deleted $entry
*/
public function addTombstone(Zend_Feed_Writer_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 Zend_Feed_Writer_Deleted
*/
public function createTombstone()
{
$deleted = new Zend_Feed_Writer_Deleted;
if ($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 Zend_Feed_Writer_Entry $entry
*/
public function addEntry(Zend_Feed_Writer_Entry $entry)
{
$this->_entries[] = $entry;
}
/**
* Removes a specific indexed entry from the internal queue. Entries must be
* added to a feed container in order to be indexed.
*
* @param int $index
*/
public function removeEntry($index)
{
if (isset($this->_entries[$index])) {
unset($this->_entries[$index]);
}
require_once 'Zend/Feed/Exception.php';
throw new Zend_Feed_Exception('Undefined index: ' . $index . '. Entry does not exist.');
}
/**
* Retrieve a specific indexed entry from the internal queue. Entries must be
* added to a feed container in order to be indexed.
*
* @param int $index
*/
public function getEntry($index = 0)
{
if (isset($this->_entries[$index])) {
return $this->_entries[$index];
}
require_once 'Zend/Feed/Exception.php';
throw new Zend_Feed_Exception('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 void
*/
public function orderByDate()
{
/**
* Could do with some improvement for performance perhaps
*/
$timestamp = time();
$entries = array();
foreach ($this->_entries as $entry) {
if ($entry->getDateModified()) {
$timestamp = (int) $entry->getDateModified()->get(Zend_Date::TIMESTAMP);
} elseif ($entry->getDateCreated()) {
$timestamp = (int) $entry->getDateCreated()->get(Zend_Date::TIMESTAMP);
}
$entries[$timestamp] = $entry;
}
krsort($entries, SORT_NUMERIC);
$this->_entries = array_values($entries);
}
/**
* 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 Zend_Feed_Reader_Entry_Interface
*/
public function current()
{
return $this->_entries[$this->key()];
}
/**
* Return the current feed key
*
* @return unknown
*/
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 boolean
*/
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 $ignoreExceptions
* @return string
*/
public function export($type, $ignoreExceptions = false)
{
$this->setType(strtolower($type));
$type = ucfirst($this->getType());
if ($type !== 'Rss' && $type !== 'Atom') {
require_once 'Zend/Feed/Exception.php';
throw new Zend_Feed_Exception('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();
}
}