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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 1.2.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\View\Helper;
use Cake\Utility\Xml;
use Cake\View\Helper;
use Cake\View\View;
/**
* RSS Helper class for easy output RSS structures.
*
* @property \Cake\View\Helper\UrlHelper $Url
* @property \Cake\View\Helper\TimeHelper $Time
* @link https://book.cakephp.org/3.0/en/views/helpers/rss.html
* @deprecated 3.5.0 RssHelper is deprecated and will be removed in 4.0.0
*/
class RssHelper extends Helper
{
/**
* Helpers used by RSS Helper
*
* @var array
*/
public $helpers = ['Url', 'Time'];
/**
* Base URL
*
* @var string
*/
public $base;
/**
* URL to current action.
*
* @var string
*/
public $here;
/**
* Parameter array.
*
* @var array
*/
public $params = [];
/**
* Current action.
*
* @var string
*/
public $action;
/**
* POSTed model data
*
* @var array
*/
public $data;
/**
* Name of the current model
*
* @var string
*/
public $model;
/**
* Name of the current field
*
* @var string
*/
public $field;
/**
* Default spec version of generated RSS
*
* @var string
*/
public $version = '2.0';
/**
* {@inheritDoc}
*/
public function __construct(View $view, array $settings = [])
{
deprecationWarning('RssHelper is deprecated and will be removed in 4.0.0');
parent::__construct($view, $settings);
}
/**
* Returns an RSS document wrapped in `<rss />` tags
*
* @param array $attrib `<rss />` tag attributes
* @param string|null $content Tag content.
* @return string An RSS document
*/
public function document($attrib = [], $content = null)
{
if ($content === null) {
$content = $attrib;
$attrib = [];
}
if (!isset($attrib['version']) || empty($attrib['version'])) {
$attrib['version'] = $this->version;
}
return $this->elem('rss', $attrib, $content);
}
/**
* Returns an RSS `<channel />` element
*
* @param array $attrib `<channel />` tag attributes
* @param array $elements Named array elements which are converted to tags
* @param string|null $content Content (`<item />`'s belonging to this channel
* @return string An RSS `<channel />`
*/
public function channel($attrib = [], $elements = [], $content = null)
{
if (!isset($elements['link'])) {
$elements['link'] = '/';
}
if (!isset($elements['title'])) {
$elements['title'] = '';
}
if (!isset($elements['description'])) {
$elements['description'] = '';
}
$elements['link'] = $this->Url->build($elements['link'], true);
$elems = '';
foreach ($elements as $elem => $data) {
$attributes = [];
if (is_array($data)) {
if (strtolower($elem) === 'cloud') {
$attributes = $data;
$data = [];
} elseif (isset($data['attrib']) && is_array($data['attrib'])) {
$attributes = $data['attrib'];
unset($data['attrib']);
} else {
$innerElements = '';
foreach ($data as $subElement => $value) {
$innerElements .= $this->elem($subElement, [], $value);
}
$data = $innerElements;
}
}
$elems .= $this->elem($elem, $attributes, $data);
}
return $this->elem('channel', $attrib, $elems . $content, !($content === null));
}
/**
* Transforms an array of data using an optional callback, and maps it to a set
* of `<item />` tags
*
* @param array $items The list of items to be mapped
* @param string|array|null $callback A string function name, or array containing an object
* and a string method name
* @return string A set of RSS `<item />` elements
*/
public function items($items, $callback = null)
{
if ($callback) {
$items = array_map($callback, $items);
}
$out = '';
$c = count($items);
for ($i = 0; $i < $c; $i++) {
$out .= $this->item([], $items[$i]);
}
return $out;
}
/**
* Converts an array into an `<item />` element and its contents
*
* @param array $att The attributes of the `<item />` element
* @param array $elements The list of elements contained in this `<item />`
* @return string An RSS `<item />` element
*/
public function item($att = [], $elements = [])
{
$content = null;
if (isset($elements['link']) && !isset($elements['guid'])) {
$elements['guid'] = $elements['link'];
}
foreach ($elements as $key => $val) {
$attrib = [];
$escape = true;
if (is_array($val) && isset($val['convertEntities'])) {
$escape = $val['convertEntities'];
unset($val['convertEntities']);
}
switch ($key) {
case 'pubDate':
$val = $this->time($val);
break;
case 'category':
if (is_array($val) && !empty($val[0])) {
$categories = [];
foreach ($val as $category) {
$attrib = [];
if (is_array($category) && isset($category['domain'])) {
$attrib['domain'] = $category['domain'];
unset($category['domain']);
}
$categories[] = $this->elem($key, $attrib, $category);
}
$elements[$key] = implode('', $categories);
continue 2;
}
if (is_array($val) && isset($val['domain'])) {
$attrib['domain'] = $val['domain'];
}
break;
case 'link':
case 'guid':
case 'comments':
if (is_array($val) && isset($val['url'])) {
$attrib = $val;
unset($attrib['url']);
$val = $val['url'];
}
$val = $this->Url->build($val, true);
break;
case 'source':
if (is_array($val) && isset($val['url'])) {
$attrib['url'] = $this->Url->build($val['url'], true);
$val = $val['title'];
} elseif (is_array($val)) {
$attrib['url'] = $this->Url->build($val[0], true);
$val = $val[1];
}
break;
case 'enclosure':
if (is_string($val['url']) && is_file(WWW_ROOT . $val['url']) && file_exists(WWW_ROOT . $val['url'])) {
if (!isset($val['length']) && strpos($val['url'], '://') === false) {
$val['length'] = sprintf('%u', filesize(WWW_ROOT . $val['url']));
}
if (!isset($val['type']) && function_exists('mime_content_type')) {
$val['type'] = mime_content_type(WWW_ROOT . $val['url']);
}
}
$val['url'] = $this->Url->build($val['url'], true);
$attrib = $val;
$val = null;
break;
default:
$attrib = $att;
}
if ($val !== null && $escape) {
$val = h($val);
}
$elements[$key] = $this->elem($key, $attrib, $val);
}
if (!empty($elements)) {
$content = implode('', $elements);
}
return $this->elem('item', (array)$att, $content, !($content === null));
}
/**
* Converts a time in any format to an RSS time
*
* @param int|string|\DateTime $time UNIX timestamp or valid time string or DateTime object.
* @return string An RSS-formatted timestamp
* @see \Cake\View\Helper\TimeHelper::toRSS
*/
public function time($time)
{
return $this->Time->toRss($time);
}
/**
* Generates an XML element
*
* @param string $name The name of the XML element
* @param array $attrib The attributes of the XML element
* @param string|array|null $content XML element content
* @param bool $endTag Whether the end tag of the element should be printed
* @return string XML
*/
public function elem($name, $attrib = [], $content = null, $endTag = true)
{
$namespace = null;
if (isset($attrib['namespace'])) {
$namespace = $attrib['namespace'];
unset($attrib['namespace']);
}
$cdata = false;
if (is_array($content) && isset($content['cdata'])) {
$cdata = true;
unset($content['cdata']);
}
if (is_array($content) && array_key_exists('value', $content)) {
$content = $content['value'];
}
$children = [];
if (is_array($content)) {
$children = $content;
$content = null;
}
$xml = '<' . $name;
if (!empty($namespace)) {
$xml .= ' xmlns';
if (is_array($namespace)) {
$xml .= ':' . $namespace['prefix'];
$namespace = $namespace['url'];
}
$xml .= '="' . $namespace . '"';
}
$bareName = $name;
if (strpos($name, ':') !== false) {
list($prefix, $bareName) = explode(':', $name, 2);
switch ($prefix) {
case 'atom':
$xml .= ' xmlns:atom="http://www.w3.org/2005/Atom"';
break;
}
}
if ($cdata && !empty($content)) {
$content = '<![CDATA[' . $content . ']]>';
}
$xml .= '>' . $content . '</' . $name . '>';
$elem = Xml::build($xml, ['return' => 'domdocument']);
$nodes = $elem->getElementsByTagName($bareName);
if ($attrib) {
foreach ($attrib as $key => $value) {
$nodes->item(0)->setAttribute($key, $value);
}
}
foreach ($children as $child) {
$child = $elem->createElement($name, $child);
$nodes->item(0)->appendChild($child);
}
$xml = $elem->saveXml();
$xml = trim(substr($xml, strpos($xml, '?>') + 2));
return $xml;
}
/**
* Event listeners.
*
* @return array
*/
public function implementedEvents()
{
return [];
}
}