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Functional, without SSO
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Jimmy Monin
2016-09-18 11:03:26 +02:00
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<?php
namespace FeedWriter;
/*
* Copyright (C) 2012 Michael Bemmerl <mail@mx-server.de>
*
* This file is part of the "Universal Feed Writer" project.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Wrapper for creating ATOM feeds
*
* @package UniversalFeedWriter
*/
class Atom extends Feed
{
/**
* {@inheritdoc}
*/
function __construct()
{
parent::__construct(Feed::ATOM);
}
}

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along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

869
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<?php
namespace FeedWriter;
use \DateTime;
/*
* Copyright (C) 2008 Anis uddin Ahmad <anisniit@gmail.com>
* Copyright (C) 2010-2013 Michael Bemmerl <mail@mx-server.de>
*
* This file is part of the "Universal Feed Writer" project.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// RSS 0.90 Officially obsoleted by 1.0
// RSS 0.91, 0.92, 0.93 and 0.94 Officially obsoleted by 2.0
// So, define constants for RSS 1.0, RSS 2.0 and ATOM
/**
* Universal Feed Writer class
*
* Generate RSS 1.0, RSS2.0 and ATOM Feeds
*
* @package UniversalFeedWriter
* @author Anis uddin Ahmad <anisniit@gmail.com>
* @link http://www.ajaxray.com/projects/rss
*/
abstract class Feed
{
const RSS1 = 'RSS 1.0';
const RSS2 = 'RSS 2.0';
const ATOM = 'ATOM';
/**
* Collection of all channel elements
*/
private $channels = array();
/**
* Collection of items as object of \FeedWriter\Item class.
*/
private $items = array();
/**
* Store some other version wise data
*/
private $data = array();
/**
* The tag names which have to encoded as CDATA
*/
private $CDATAEncoding = array();
/**
* Collection of XML namespaces
*/
private $namespaces = array();
/**
* Contains the format of this feed.
*/
private $version = null;
/**
* Constructor
*
* If no version is given, a feed in RSS 2.0 format will be generated.
*
* @param constant the version constant (RSS1/RSS2/ATOM).
*/
protected function __construct($version = FeedWriter::RSS2)
{
$this->version = $version;
// Setting default encoding
$this->encoding = 'utf-8';
// Setting default value for essential channel elements
$this->channels['title'] = $version . ' Feed';
$this->channels['link'] = 'http://www.ajaxray.com/blog';
// Add some default XML namespaces
$this->namespaces['content'] = 'http://purl.org/rss/1.0/modules/content/';
$this->namespaces['wfw'] = 'http://wellformedweb.org/CommentAPI/';
$this->namespaces['atom'] = 'http://www.w3.org/2005/Atom';
$this->namespaces['rdf'] = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
$this->namespaces['rss1'] = 'http://purl.org/rss/1.0/';
$this->namespaces['dc'] = 'http://purl.org/dc/elements/1.1/';
$this->namespaces['sy'] = 'http://purl.org/rss/1.0/modules/syndication/';
//Tag names to encode in CDATA
$this->CDATAEncoding = array('description', 'content:encoded', 'summary');
}
// Start # public functions ---------------------------------------------
/**
* Adds a channel element indicating the program used to generate the feed.
*
* @return void
*/
public function addGenerator()
{
if ($this->version == Feed::ATOM)
$this->setChannelElement('atom:generator', 'FeedWriter', array('uri' => 'https://github.com/mibe/FeedWriter'));
else if ($this->version == Feed::RSS2)
$this->setChannelElement('generator', 'FeedWriter');
else
die('The generator element is not supported in RSS1 feeds.');
return $this;
}
/**
* Add a XML namespace to the internal list of namespaces. After that,
* custom channel elements can be used properly to generate a valid feed.
*
* @access public
* @param string namespace prefix
* @param string namespace name (URI)
* @return void
* @link http://www.w3.org/TR/REC-xml-names/
*/
public function addNamespace($prefix, $uri)
{
$this->namespaces[$prefix] = $uri;
return $this;
}
/**
* Add a channel element to the feed.
*
* @access public
* @param string name of the channel tag
* @param string content of the channel tag
* @param bool TRUE if this element can appear multiple times
* @return void
*/
public function setChannelElement($elementName, $content, $multiple = false)
{
if ($multiple === TRUE)
$this->channels[$elementName][] = $content;
else
$this->channels[$elementName] = $content;
return $this;
}
/**
* Set multiple channel elements from an array. Array elements
* should be 'channelName' => 'channelContent' format.
*
* @access public
* @param array array of channels
* @return void
*/
public function setChannelElementsFromArray($elementArray)
{
if (!is_array($elementArray))
return;
foreach ($elementArray as $elementName => $content)
{
$this->setChannelElement($elementName, $content);
}
return $this;
}
/**
* Get the appropriate MIME type string for the current feed.
*
* @access public
* @return string
*/
public function getMIMEType()
{
switch($this->version)
{
case Feed::RSS2 : $mimeType = "application/rss+xml";
break;
case Feed::RSS1 : $mimeType = "application/rdf+xml";
break;
case Feed::ATOM : $mimeType = "application/atom+xml";
break;
default : $mimeType = "text/xml";
}
return $mimeType;
}
/**
* Print the actual RSS/ATOM file
*
* Sets a Content-Type header and echoes the contents of the feed.
* Should only be used in situations where direct output is desired;
* if you need to pass a string around, use generateFeed() instead.
*
* @access public
* @param bool FALSE if the specific feed media type should be sent.
* @return void
*/
public function printFeed($useGenericContentType = false)
{
$contentType = "text/xml";
if (!$useGenericContentType)
{
$contentType = $this->getMIMEType();
}
header("Content-Type: " . $contentType);
echo $this->generateFeed();
}
/**
* Generate the feed.
*
* @access public
* @return string
*/
public function generateFeed()
{
return $this->makeHeader()
. $this->makeChannels()
. $this->makeItems()
. $this->makeFooter();
}
/**
* Create a new Item.
*
* @access public
* @return object instance of Item class
*/
public function createNewItem()
{
$Item = new Item($this->version);
return $Item;
}
/**
* Add a FeedItem to the main class
*
* @access public
* @param Item instance of Item class
* @return void
*/
public function addItem(Item $feedItem)
{
if ($feedItem->getVersion() != $this->version)
die('Feed type mismatch: This instance can handle ' . $this->version . ' feeds only, but item with type ' . $feedItem->getVersion() . ' given.');
$this->items[] = $feedItem;
return $this;
}
// Wrapper functions -------------------------------------------------------------------
/** Set the 'encoding' feed attribute
* @access public
* @param string value of 'encoding' feed attribute
* @return void
*/
public function setEncoding($encoding)
{
$this->encoding = $encoding;
return $this;
}
/**
* Set the 'title' channel element
*
* @access public
* @param string value of 'title' channel tag
* @return void
*/
public function setTitle($title)
{
return $this->setChannelElement('title', $title);
}
/**
* Set the date when the ATOM feed was lastly updated.
*
* This adds the 'updated' element to the feed. The value of the date parameter
* can be either an instance of the DateTime class, an integer containing a UNIX
* timestamp or a string which is parseable by PHP's 'strtotime' function.
*
* Not supported in RSS1 feeds.
*
* @access public
* @param DateTime|int|string Date which should be used.
* @return void
*/
public function setDate($date)
{
if ($this->version == Feed::RSS1)
die('The publication date is not supported in RSS1 feeds.');
// The feeds have different date formats.
$format = $this->version == Feed::ATOM ? \DATE_ATOM : \DATE_RSS;
if ($date instanceof DateTime)
$date = $date->format($format);
else if(is_numeric($date) && $date >= 0)
$date = date($format, $date);
else if (is_string($date))
$date = date($format, strtotime($date));
else
die('The given date was not an instance of DateTime, a UNIX timestamp or a date string.');
if ($this->version == Feed::ATOM)
$this->setChannelElement('updated', $date);
else
$this->setChannelElement('lastBuildDate', $date);
return $this;
}
/**
* Set the 'description' channel element
*
* @access public
* @param string value of 'description' channel tag
* @return void
*/
public function setDescription($description)
{
if ($this->version != Feed::ATOM)
$this->setChannelElement('description', $description);
return $this;
}
/**
* Set the 'link' channel element
*
* @access public
* @param string value of 'link' channel tag
* @return void
*/
public function setLink($link)
{
return $this->setChannelElement('link', $link);
}
/**
* Set custom 'link' channel elements.
*
* In ATOM feeds, only one link with alternate relation and the same combination of
* type and hreflang values.
*
* @access public
* @param string URI of this link
* @param string relation type of the resource
* @param string media type of the target resource
* @param string language of the resource
* @param string human-readable information about the resource
* @param int length of the resource in bytes
* @link https://www.iana.org/assignments/link-relations/link-relations.xml
* @link https://tools.ietf.org/html/rfc4287#section-4.1.1
*/
public function setAtomLink($href, $rel = null, $type = null, $hreflang = null, $title = null, $length = null)
{
$data = array('href' => $href);
if ($rel != null)
{
if (!is_string($rel) || empty($rel))
die('rel parameter must be a string and a valid relation identifier.');
$data['rel'] = $rel;
}
if ($type != null)
{
// Regex used from RFC 4287, page 41
if (!is_string($type) || preg_match('/.+\/.+/', $type) != 1)
die('type parameter must be a string and a MIME type.');
$data['type'] = $type;
}
if ($hreflang != null)
{
// Regex used from RFC 4287, page 41
if (!is_string($hreflang) || preg_match('/[A-Za-z]{1,8}(-[A-Za-z0-9]{1,8})*/', $hreflang) != 1)
die('hreflang parameter must be a string and a valid language code.');
$data['hreflang'] = $hreflang;
}
if ($title != null)
{
if (!is_string($title) || empty($title))
die('title parameter must be a string and not empty.');
$data['title'] = $title;
}
if ($length != null)
{
if (!is_int($length) || $length < 0)
die('length parameter must be a positive integer.');
$data['length'] = (string)$length;
}
// ATOM spec. has some restrictions on atom:link usage
// See RFC 4287, page 12 (4.1.1)
if ($this->version == Feed::ATOM)
{
foreach($this->channels as $key => $value)
{
if ($key != 'atom:link')
continue;
// $value is an array , so check every element
foreach($value as $linkItem)
{
// Only one link with relation alternate and same hreflang & type is allowed.
if (@$linkItem['rel'] == 'alternate' && @$linkItem['hreflang'] == $hreflang && @$linkItem['type'] == $type)
die('The feed must not contain more than one link element with a relation of "alternate"'
. ' that has the same combination of type and hreflang attribute values.');
}
}
}
return $this->setChannelElement('atom:link', $data, true);
}
/**
* Set an 'atom:link' channel element with relation=self attribute.
* Needs the full URL to this feed.
*
* @link http://www.rssboard.org/rss-profile#namespace-elements-atom-link
* @access public
* @param string URL to this feed
* @return void
*/
public function setSelfLink($url)
{
return $this->setAtomLink($url, 'self', $this->getMIMEType());
}
/**
* Set the 'image' channel element
*
* @access public
* @param string title of image
* @param string link url of the image
* @param string path url of the image
* @return void
*/
public function setImage($title, $link, $url)
{
return $this->setChannelElement('image', array('title'=>$title, 'link'=>$link, 'url'=>$url));
}
/**
* Set the 'about' channel element. Only for RSS 1.0
*
* @access public
* @param string value of 'about' channel tag
* @return void
*/
public function setChannelAbout($url)
{
$this->data['ChannelAbout'] = $url;
return $this;
}
/**
* Generate an UUID.
*
* The UUID is based on an MD5 hash. If no key is given, a unique ID as the input
* for the MD5 hash is generated.
*
* @author Anis uddin Ahmad <admin@ajaxray.com>
* @param string optional key on which the UUID is generated
* @param string an optional prefix
* @return string the formated UUID
*/
public static function uuid($key = null, $prefix = '')
{
$key = ($key == null) ? uniqid(rand()) : $key;
$chars = md5($key);
$uuid = substr($chars,0,8) . '-';
$uuid .= substr($chars,8,4) . '-';
$uuid .= substr($chars,12,4) . '-';
$uuid .= substr($chars,16,4) . '-';
$uuid .= substr($chars,20,12);
return $prefix . $uuid;
}
// End # public functions ----------------------------------------------
// Start # private functions ----------------------------------------------
/**
* Returns all used XML namespace prefixes in this instance.
* This includes all channel elements and feed items.
* Unfortunately some namespace prefixes are not included,
* because they are hardcoded, e.g. rdf.
*
* @access private
* @return array Array with namespace prefix as value.
*/
private function getNamespacePrefixes()
{
$prefixes = array();
// Get all tag names from channel elements...
$tags = array_keys($this->channels);
// ... and now all names from feed items
foreach ($this->items as $item)
$tags = array_merge($tags, array_keys($item->getElements()));
// Look for prefixes in those tag names
foreach($tags as $tag)
{
$elements = explode(':', $tag);
if (count($elements) != 2)
continue;
$prefixes[] = $elements[0];
}
return array_unique($prefixes);
}
/**
* Returns the XML header and root element, depending on the feed type.
*
* @access private
* @return void
*/
private function makeHeader()
{
$out = '<?xml version="1.0" encoding="'.$this->encoding.'" ?>' . PHP_EOL;
$prefixes = $this->getNamespacePrefixes();
$attributes = array();
$tagName = '';
$defaultNamespace = '';
if($this->version == Feed::RSS2)
{
$tagName = 'rss';
$attributes['version'] = '2.0';
}
elseif($this->version == Feed::RSS1)
{
$tagName = 'rdf:RDF';
$prefixes[] = 'rdf';
$defaultNamespace = $this->namespaces['rss1'];
}
else if($this->version == Feed::ATOM)
{
$tagName = 'feed';
$defaultNamespace = $this->namespaces['atom'];
// Ugly hack to remove the 'atom' value from the prefixes array.
$prefixes = array_flip($prefixes);
unset($prefixes['atom']);
$prefixes = array_flip($prefixes);
}
// Iterate through every namespace prefix and add it to the element attributes.
foreach($prefixes as $prefix)
{
if (!isset($this->namespaces[$prefix]))
die('Unknown XML namespace prefix: \'' . $prefix . '\'. Use the addNamespace method to add support for this prefix.');
else
$attributes['xmlns:' . $prefix] = $this->namespaces[$prefix];
}
// Include default namepsace, if required
if (!empty($defaultNamespace))
$attributes['xmlns'] = $defaultNamespace;
$out .= $this->makeNode($tagName, '', $attributes, true);
return $out;
}
/**
* Closes the open tags at the end of file
*
* @access private
* @return void
*/
private function makeFooter()
{
if($this->version == Feed::RSS2)
{
return '</channel>' . PHP_EOL . '</rss>';
}
elseif($this->version == Feed::RSS1)
{
return '</rdf:RDF>';
}
else if($this->version == Feed::ATOM)
{
return '</feed>';
}
}
/**
* Creates a single node in XML format
*
* @access private
* @param string name of the tag
* @param mixed tag value as string or array of nested tags in 'tagName' => 'tagValue' format
* @param array Attributes (if any) in 'attrName' => 'attrValue' format
* @param string True if the end tag should be omitted. Defaults to false.
* @return string formatted xml tag
*/
private function makeNode($tagName, $tagContent, $attributes = null, $omitEndTag = false)
{
$nodeText = '';
$attrText = '';
if(is_array($attributes) && count($attributes) > 0)
{
foreach ($attributes as $key => $value)
{
$value = htmlspecialchars($value);
$attrText .= " $key=\"$value\"";
}
}
if(is_array($tagContent) && $this->version == Feed::RSS1)
{
$attrText = ' rdf:parseType="Resource"';
}
$attrText .= (in_array($tagName, $this->CDATAEncoding) && $this->version == Feed::ATOM) ? ' type="html"' : '';
$nodeText .= "<{$tagName}{$attrText}>";
$nodeText .= (in_array($tagName, $this->CDATAEncoding)) ? '<![CDATA[' : '';
if(is_array($tagContent))
{
foreach ($tagContent as $key => $value)
{
$nodeText .= $this->makeNode($key, $value);
}
}
else
{
$nodeText .= (in_array($tagName, $this->CDATAEncoding)) ? $this->sanitizeCDATA($tagContent) : htmlspecialchars($tagContent);
}
$nodeText .= (in_array($tagName, $this->CDATAEncoding)) ? ']]>' : '';
if (!$omitEndTag)
$nodeText .= "</$tagName>";
$nodeText .= PHP_EOL;
return $nodeText;
}
/**
* Make the channels.
*
* @access private
* @return void
*/
private function makeChannels()
{
$out = '';
//Start channel tag
switch ($this->version)
{
case Feed::RSS2:
$out .= '<channel>' . PHP_EOL;
break;
case Feed::RSS1:
$out .= (isset($this->data['ChannelAbout']))? "<channel rdf:about=\"{$this->data['ChannelAbout']}\">" : "<channel rdf:about=\"{$this->channels['link']}\">";
break;
}
//Print Items of channel
foreach ($this->channels as $key => $value)
{
// ATOM feed needs some special handling
if ($this->version == Feed::ATOM)
{
// Strip all ATOM namespace prefixes from tags. Not needed here, because the ATOM namespace name is
// used as default namespace.
if (strncmp($key, 'atom', 4) == 0)
$key = substr($key, 5);
if ($key == 'link')
{
if (is_array($value))
{
// $value is an array containing multiple atom:link element attributes
foreach($value as $attributes)
{
// $attributes contains actually the node attributes, not the value.
$out .= $this->makeNode($key, '', $attributes);
}
}
else
{
// ATOM prints link element as href attribute
$out .= $this->makeNode($key, '', array('href' => $value));
//Add the id for ATOM
$out .= $this->makeNode('id', Feed::uuid($value, 'urn:uuid:'));
}
}
else
$out .= $this->makeNode($key, $value);
}
else
{
if ($key == 'atom:link')
{
// $value is an array containing multiple atom:link element attributes
foreach($value as $attributes)
{
// $attributes contains actually the node attributes, not the value.
$out .= $this->makeNode($key, '', $attributes);
}
}
else
{
$out .= $this->makeNode($key, $value);
}
}
}
//RSS 1.0 have special tag <rdf:Seq> with channel
if($this->version == Feed::RSS1)
{
$out .= "<items>" . PHP_EOL . "<rdf:Seq>" . PHP_EOL;
foreach ($this->items as $item)
{
$thisItems = $item->getElements();
$out .= "<rdf:li resource=\"{$thisItems['link']['content']}\"/>" . PHP_EOL;
}
$out .= "</rdf:Seq>" . PHP_EOL . "</items>" . PHP_EOL . "</channel>" . PHP_EOL;
}
return $out;
}
/**
* Prints formatted feed items
*
* @access private
* @return void
*/
private function makeItems()
{
$out = '';
foreach ($this->items as $item)
{
$thisItems = $item->getElements();
// the argument is printed as rdf:about attribute of item in rss 1.0
$out .= $this->startItem($thisItems['link']['content']);
foreach ($thisItems as $feedItem)
{
$name = $feedItem['name'];
// Strip all ATOM namespace prefixes from tags when feed is an ATOM feed.
// Not needed here, because the ATOM namespace name is used as default namespace.
if ($this->version == Feed::ATOM && strncmp($name, 'atom', 4) == 0)
$name = substr($name, 5);
$out .= $this->makeNode($name, $feedItem['content'], $feedItem['attributes']);
}
$out .= $this->endItem();
}
return $out;
}
/**
* Make the starting tag of channels
*
* @access private
* @param string The vale of about tag which is used for RSS 1.0 only.
* @return void
*/
private function startItem($about = false)
{
$out = '';
if($this->version == Feed::RSS2)
{
$out .= '<item>' . PHP_EOL;
}
else if($this->version == Feed::RSS1)
{
if($about)
{
$out .= "<item rdf:about=\"$about\">" . PHP_EOL;
}
else
{
throw new Exception("link element is not set - It's required for RSS 1.0 to be used as the about attribute of the item tag.");
}
}
else if($this->version == Feed::ATOM)
{
$out .= "<entry>" . PHP_EOL;
}
return $out;
}
/**
* Closes feed item tag
*
* @access private
* @return void
*/
private function endItem()
{
if($this->version == Feed::RSS2 || $this->version == Feed::RSS1)
{
return '</item>' . PHP_EOL;
}
else if($this->version == Feed::ATOM)
{
return '</entry>' . PHP_EOL;
}
}
/**
* Sanitizes data which will be later on returned as CDATA in the feed.
*
* A "]]>" respectively "<![CDATA" in the data would break the CDATA in the
* XML, so the brackets are converted to a HTML entity.
*
* @access private
* @param string Data to be sanitized
* @return string Sanitized data
*/
private function sanitizeCDATA($text)
{
$text = str_replace("]]>", "]]&gt;", $text);
$text = str_replace("<![CDATA[", "&lt;![CDATA[", $text);
return $text;
}
// End # private functions ----------------------------------------------
} // end of class Feed

392
sources/lib/FeedWriter/Item.php Normal file
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<?php
namespace FeedWriter;
use \DateTime;
/*
* Copyright (C) 2008 Anis uddin Ahmad <anisniit@gmail.com>
* Copyright (C) 2010-2013 Michael Bemmerl <mail@mx-server.de>
*
* This file is part of the "Universal Feed Writer" project.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Universal Feed Writer
*
* Item class - Used as feed element in Feed class
*
* @package UniversalFeedWriter
* @author Anis uddin Ahmad <anisniit@gmail.com>
* @link http://www.ajaxray.com/projects/rss
*/
class Item
{
/**
* Collection of feed item elements
*/
private $elements = array();
/**
* Contains the format of this feed.
*/
private $version;
/**
* Is used as a suffix when multiple elements have the same name.
**/
private $_cpt = 0;
/**
* Constructor
*
* @param constant (RSS1/RSS2/ATOM) RSS2 is default.
*/
function __construct($version = Feed::RSS2)
{
$this->version = $version;
}
/**
* Return an unique number
* @access private
* @return int
**/
private function cpt() {
return $this->_cpt++;
}
/**
* Add an element to elements array
*
* @access public
* @param string The tag name of an element
* @param string The content of tag
* @param array Attributes(if any) in 'attrName' => 'attrValue' format
* @param boolean Specifies if an already existing element is overwritten.
* @param boolean Specifies if multiple elements of the same name are allowed.
* @return void
*/
public function addElement($elementName, $content, $attributes = null, $overwrite = FALSE, $allowMultiple = FALSE)
{
$key = $elementName;
// return if element already exists & if overwriting is disabled
// & if multiple elements are not allowed.
if (isset($this->elements[$elementName]) && !$overwrite) {
if (!$allowMultiple)
return;
$key .= '-' . $this->cpt();
}
$this->elements[$key]['name'] = $elementName;
$this->elements[$key]['content'] = $content;
$this->elements[$key]['attributes'] = $attributes;
return $this;
}
/**
* Set multiple feed elements from an array.
* Elements which have attributes cannot be added by this method
*
* @access public
* @param array array of elements in 'tagName' => 'tagContent' format.
* @return void
*/
public function addElementArray($elementArray)
{
if (!is_array($elementArray))
return;
foreach ($elementArray as $elementName => $content)
{
$this->addElement($elementName, $content);
}
return $this;
}
/**
* Return the collection of elements in this feed item
*
* @access public
* @return array
*/
public function getElements()
{
return $this->elements;
}
/**
* Return the type of this feed item
*
* @access public
* @return string The feed type, as defined in Feed.php
*/
public function getVersion()
{
return $this->version;
}
// Wrapper functions ------------------------------------------------------
/**
* Set the 'description' element of feed item
*
* @access public
* @param string The content of 'description' or 'summary' element
* @return void
*/
public function setDescription($description)
{
$tag = ($this->version == Feed::ATOM) ? 'summary' : 'description';
return $this->addElement($tag, $description);
}
/**
* Set the 'content' element of the feed item
* For ATOM feeds only
*
* @access public
* @param string Content for the item (i.e., the body of a blog post).
* @return void
*/
public function setContent($content)
{
if ($this->version != Feed::ATOM)
die('The content element is supported in ATOM feeds only.');
return $this->addElement('content', $content, array('type' => 'html'));
}
/**
* Set the 'title' element of feed item
*
* @access public
* @param string The content of 'title' element
* @return void
*/
public function setTitle($title)
{
return $this->addElement('title', $title);
}
/**
* Set the 'date' element of the feed item.
*
* The value of the date parameter can be either an instance of the
* DateTime class, an integer containing a UNIX timestamp or a string
* which is parseable by PHP's 'strtotime' function.
*
* @access public
* @param DateTime|int|string Date which should be used.
* @return void
*/
public function setDate($date)
{
if(!is_numeric($date))
{
if ($date instanceof DateTime)
$date = $date->getTimestamp();
else
{
$date = strtotime($date);
if ($date === FALSE)
die('The given date string was not parseable.');
}
}
else if ($date < 0)
die('The given date is not an UNIX timestamp.');
if($this->version == Feed::ATOM)
{
$tag = 'updated';
$value = date(\DATE_ATOM, $date);
}
elseif($this->version == Feed::RSS2)
{
$tag = 'pubDate';
$value = date(\DATE_RSS, $date);
}
else
{
$tag = 'dc:date';
$value = date("Y-m-d", $date);
}
return $this->addElement($tag, $value);
}
/**
* Set the 'link' element of feed item
*
* @access public
* @param string The content of 'link' element
* @return void
*/
public function setLink($link)
{
if($this->version == Feed::RSS2 || $this->version == Feed::RSS1)
{
$this->addElement('link', $link);
}
else
{
$this->addElement('link','',array('href'=>$link));
$this->addElement('id', Feed::uuid($link,'urn:uuid:'));
}
return $this;
}
/**
* Attach a external media to the feed item.
* Not supported in RSS 1.0 feeds.
*
* See RFC 4288 for syntactical correct MIME types.
*
* Note that you should avoid the use of more than one enclosure in one item,
* since some RSS aggregators don't support it.
*
* @access public
* @param string The URL of the media.
* @param integer The length of the media.
* @param string The MIME type attribute of the media.
* @param boolean Specifies, if multiple enclosures are allowed
* @return void
* @link https://tools.ietf.org/html/rfc4288
*/
public function addEnclosure($url, $length, $type, $multiple = TRUE)
{
if ($this->version == Feed::RSS1)
die('Media attachment is not supported in RSS1 feeds.');
// the length parameter should be set to 0 if it can't be determined
// see http://www.rssboard.org/rss-profile#element-channel-item-enclosure
if (!is_numeric($length) || $length < 0)
die('The length parameter must be an integer and greater or equals to zero.');
// Regex used from RFC 4287, page 41
if (!is_string($type) || preg_match('/.+\/.+/', $type) != 1)
die('type parameter must be a string and a MIME type.');
$attributes = array('length' => $length, 'type' => $type);
if ($this->version == Feed::RSS2)
{
$attributes['url'] = $url;
$this->addElement('enclosure', '', $attributes, FALSE, $multiple);
}
else
{
$attributes['href'] = $url;
$attributes['rel'] = 'enclosure';
$this->addElement('atom:link', '', $attributes, FALSE, $multiple);
}
return $this;
}
/**
* Alias of addEnclosure, for backward compatibility. Using only this
* method ensure that the 'enclosure' element will be present only once.
*
* @access public
* @param string The URL of the media.
* @param integer The length of the media.
* @param string The MIME type attribute of the media.
* @return void
* @link https://tools.ietf.org/html/rfc4288
*
**/
public function setEnclosure($url, $length, $type) {
return $this->addEnclosure($url, $length, $type, false);
}
/**
* Set the 'author' element of feed item.
* Not supported in RSS 1.0 feeds.
*
* @access public
* @param string The author of this item
* @param string Optional email address of the author
* @param string Optional URI related to the author
* @return void
*/
public function setAuthor($author, $email = null, $uri = null)
{
switch($this->version)
{
case Feed::RSS1: die('The author element is not supported in RSS1 feeds.');
break;
case Feed::RSS2:
if ($email != null)
$author = $email . ' (' . $author . ')';
$this->addElement('author', $author);
break;
case Feed::ATOM:
$elements = array('name' => $author);
// Regex from RFC 4287 page 41
if ($email != null && preg_match('/.+@.+/', $email) == 1)
$elements['email'] = $email;
if ($uri != null)
$elements['uri'] = $uri;
$this->addElement('author', $elements);
break;
}
return $this;
}
/**
* Set the unique identifier of the feed item
*
* @access public
* @param string The unique identifier of this item
* @param boolean The value of the 'isPermaLink' attribute in RSS 2 feeds.
* @return void
*/
public function setId($id, $permaLink = false)
{
if ($this->version == Feed::RSS2)
{
if (!is_bool($permaLink))
die('The permaLink parameter must be boolean.');
$permaLink = $permaLink ? 'true' : 'false';
$this->addElement('guid', $id, array('isPermaLink' => $permaLink));
}
else if ($this->version == Feed::ATOM)
{
$this->addElement('id', Feed::uuid($id,'urn:uuid:'), NULL, TRUE);
}
else
die('A unique ID is not supported in RSS1 feeds.');
return $this;
}
} // end of class Item

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This package can be used to generate feeds in either RSS 1.0, RSS 2.0 or ATOM
formats.
There are three main classes that abstract the feed information and another to
encapsulate the feed items information.
Applications can create feed writer object, several feed item objects, set
several types of properties of either feeds and feed items, and add items to
the feed.
Once a feed is fully composed with its items, the feed writer class can generate
the necessary XML structure to describe the feed in the RSS or ATOM formats.
The feed is generated as part of the current feed output.
Requirements
============
PHP >= 5.3
If you don't have 5.3 available on your system, there's a version supporting
PHP >= 5.0 in the "legacy-php-5.0" branch.
Documentation
=============
The documentation can be found in the "gh-pages" branch or on GitHub Pages:
http://mibe.github.io/FeedWriter/
Authors
=======
(in chronological order)
Anis uddin Ahmad
Michael Bemmerl
Phil Freo
Paul Ferrett
Brennen Bearnes
Michael Robinson

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<?php
namespace FeedWriter;
/*
* Copyright (C) 2012 Michael Bemmerl <mail@mx-server.de>
*
* This file is part of the "Universal Feed Writer" project.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Wrapper for creating RSS1 feeds
*
* @package UniversalFeedWriter
*/
class RSS1 extends Feed
{
/**
* {@inheritdoc}
*/
function __construct()
{
parent::__construct(Feed::RSS1);
}
}

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<?php
namespace FeedWriter;
/*
* Copyright (C) 2012 Michael Bemmerl <mail@mx-server.de>
*
* This file is part of the "Universal Feed Writer" project.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Wrapper for creating RSS2 feeds
*
* @package UniversalFeedWriter
*/
class RSS2 extends Feed
{
/**
* {@inheritdoc}
*/
function __construct()
{
parent::__construct(Feed::RSS2);
}
}

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{
"name": "mibe/feedwriter",
"description": "Generate feeds in either RSS 1.0, RSS 2.0 or ATOM formats",
"keywords": ["RSS"],
"homepage": "https://github.com/mibe/FeedWriter",
"type": "library",
"license": "GPL-3.0",
"authors": [
{
"name": "Anis uddin Ahmad"
},
{
"name": "Michael Bemmerl",
"email": "mail@mx-server.de"
},
{
"name": "Phil Freo"
},
{
"name": "Paul Ferrett"
},
{
"name": "Brennen Bearnes"
},
{
"name": "Michael Robinson",
"email": "mike@pagesofinterest.net"
}
],
"minimum-stability": "dev",
"autoload": {
"classmap": [
"ATOM.php",
"Feed.php",
"Item.php",
"RSS1.php",
"RSS2.php"
]
}
}