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author | Eli Schwartz <eschwartz@archlinux.org> | 2021-05-02 17:54:58 +0200 |
---|---|---|
committer | Eli Schwartz <eschwartz@archlinux.org> | 2021-05-03 03:46:35 +0200 |
commit | 8ec170b3e0ba386eb135c9a2957d983ca937c302 (patch) | |
tree | f567d4eaaa7b9189a942871f14cf22f7a76c9e19 /web/lib | |
parent | c3035a9039b0adbce30e3ec5872cff46ab510317 (diff) | |
download | aur-8ec170b3e0ba386eb135c9a2957d983ca937c302.tar.gz aur-8ec170b3e0ba386eb135c9a2957d983ca937c302.tar.xz |
dos2unix a file with Windows linebreaks that editors and human reviewers hate
Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Diffstat (limited to 'web/lib')
-rw-r--r-- | web/lib/feedcreator.class.php | 3084 |
1 files changed, 1542 insertions, 1542 deletions
diff --git a/web/lib/feedcreator.class.php b/web/lib/feedcreator.class.php index e881f252..a1fe24c9 100644 --- a/web/lib/feedcreator.class.php +++ b/web/lib/feedcreator.class.php @@ -1,1542 +1,1542 @@ -<?php
-/***************************************************************************
-
-FeedCreator class v1.7.2
-originally (c) Kai Blankenhorn
-www.bitfolge.de
-kaib@bitfolge.de
-v1.3 work by Scott Reynen (scott@randomchaos.com) and Kai Blankenhorn
-v1.5 OPML support by Dirk Clemens
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library 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
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-****************************************************************************
-
-
-Changelog:
-
-v1.7.2 10-11-04
- license changed to LGPL
-
-v1.7.1
- fixed a syntax bug
- fixed left over debug code
-
-v1.7 07-18-04
- added HTML and JavaScript feeds (configurable via CSS) (thanks to Pascal Van Hecke)
- added HTML descriptions for all feed formats (thanks to Pascal Van Hecke)
- added a switch to select an external stylesheet (thanks to Pascal Van Hecke)
- changed default content-type to application/xml
- added character encoding setting
- fixed numerous smaller bugs (thanks to Sören Fuhrmann of golem.de)
- improved changing ATOM versions handling (thanks to August Trometer)
- improved the UniversalFeedCreator's useCached method (thanks to Sören Fuhrmann of golem.de)
- added charset output in HTTP headers (thanks to Sören Fuhrmann of golem.de)
- added Slashdot namespace to RSS 1.0 (thanks to Sören Fuhrmann of golem.de)
-
-v1.6 05-10-04
- added stylesheet to RSS 1.0 feeds
- fixed generator comment (thanks Kevin L. Papendick and Tanguy Pruvot)
- fixed RFC822 date bug (thanks Tanguy Pruvot)
- added TimeZone customization for RFC8601 (thanks Tanguy Pruvot)
- fixed Content-type could be empty (thanks Tanguy Pruvot)
- fixed author/creator in RSS1.0 (thanks Tanguy Pruvot)
-
-v1.6 beta 02-28-04
- added Atom 0.3 support (not all features, though)
- improved OPML 1.0 support (hopefully - added more elements)
- added support for arbitrary additional elements (use with caution)
- code beautification :-)
- considered beta due to some internal changes
-
-v1.5.1 01-27-04
- fixed some RSS 1.0 glitches (thanks to Stéphane Vanpoperynghe)
- fixed some inconsistencies between documentation and code (thanks to Timothy Martin)
-
-v1.5 01-06-04
- added support for OPML 1.0
- added more documentation
-
-v1.4 11-11-03
- optional feed saving and caching
- improved documentation
- minor improvements
-
-v1.3 10-02-03
- renamed to FeedCreator, as it not only creates RSS anymore
- added support for mbox
- tentative support for echo/necho/atom/pie/???
-
-v1.2 07-20-03
- intelligent auto-truncating of RSS 0.91 attributes
- don't create some attributes when they're not set
- documentation improved
- fixed a real and a possible bug with date conversions
- code cleanup
-
-v1.1 06-29-03
- added images to feeds
- now includes most RSS 0.91 attributes
- added RSS 2.0 feeds
-
-v1.0 06-24-03
- initial release
-
-
-
-***************************************************************************/
-
-/*** GENERAL USAGE *********************************************************
-
-include("feedcreator.class.php");
-
-$rss = new UniversalFeedCreator();
-$rss->useCached(); // use cached version if age<1 hour
-$rss->title = "PHP news";
-$rss->description = "daily news from the PHP scripting world";
-
-//optional
-$rss->descriptionTruncSize = 500;
-$rss->descriptionHtmlSyndicated = true;
-
-$rss->link = "http://www.dailyphp.net/news";
-$rss->syndicationURL = "http://www.dailyphp.net/".$_SERVER["PHP_SELF"];
-
-$image = new FeedImage();
-$image->title = "dailyphp.net logo";
-$image->url = "http://www.dailyphp.net/images/logo.gif";
-$image->link = "http://www.dailyphp.net";
-$image->description = "Feed provided by dailyphp.net. Click to visit.";
-
-//optional
-$image->descriptionTruncSize = 500;
-$image->descriptionHtmlSyndicated = true;
-
-$rss->image = $image;
-
-// get your news items from somewhere, e.g. your database:
-mysql_select_db($dbHost, $dbUser, $dbPass);
-$res = mysql_query("SELECT * FROM news ORDER BY newsdate DESC");
-while ($data = mysql_fetch_object($res)) {
- $item = new FeedItem();
- $item->title = $data->title;
- $item->link = $data->url;
- $item->description = $data->short;
-
- //optional
- item->descriptionTruncSize = 500;
- item->descriptionHtmlSyndicated = true;
-
- $item->date = $data->newsdate;
- $item->source = "http://www.dailyphp.net";
- $item->author = "John Doe";
-
- $rss->addItem($item);
-}
-
-// valid format strings are: RSS0.91, RSS1.0, RSS2.0, PIE0.1 (deprecated),
-// MBOX, OPML, ATOM, ATOM0.3, HTML, JS
-echo $rss->saveFeed("RSS1.0", "news/feed.xml");
-
-
-***************************************************************************
-* A little setup *
-**************************************************************************/
-
-// your local timezone, set to "" to disable or for GMT
-define("TIME_ZONE","+01:00");
-
-
-
-
-/**
- * Version string.
- **/
-define("FEEDCREATOR_VERSION", "FeedCreator 1.7.2");
-
-
-
-/**
- * A FeedItem is a part of a FeedCreator feed.
- *
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- * @since 1.3
- */
-class FeedItem extends HtmlDescribable {
- /**
- * Mandatory attributes of an item.
- */
- var $title, $description, $link;
-
- /**
- * Optional attributes of an item.
- */
- var $author, $authorEmail, $image, $category, $comments, $guid, $source, $creator;
-
- /**
- * Publishing date of an item. May be in one of the following formats:
- *
- * RFC 822:
- * "Mon, 20 Jan 03 18:05:41 +0400"
- * "20 Jan 03 18:05:41 +0000"
- *
- * ISO 8601:
- * "2003-01-20T18:05:41+04:00"
- *
- * Unix:
- * 1043082341
- */
- var $date;
-
- /**
- * Any additional elements to include as an assiciated array. All $key => $value pairs
- * will be included unencoded in the feed item in the form
- * <$key>$value</$key>
- * Again: No encoding will be used! This means you can invalidate or enhance the feed
- * if $value contains markup. This may be abused to embed tags not implemented by
- * the FeedCreator class used.
- */
- var $additionalElements = Array();
-
- // on hold
- // var $source;
-}
-
-
-
-/**
- * An FeedImage may be added to a FeedCreator feed.
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- * @since 1.3
- */
-class FeedImage extends HtmlDescribable {
- /**
- * Mandatory attributes of an image.
- */
- var $title, $url, $link;
-
- /**
- * Optional attributes of an image.
- */
- var $width, $height, $description;
-}
-
-
-
-/**
- * An HtmlDescribable is an item within a feed that can have a description that may
- * include HTML markup.
- */
-class HtmlDescribable {
- /**
- * Indicates whether the description field should be rendered in HTML.
- */
- var $descriptionHtmlSyndicated;
-
- /**
- * Indicates whether and to how many characters a description should be truncated.
- */
- var $descriptionTruncSize;
-
- /**
- * Returns a formatted description field, depending on descriptionHtmlSyndicated and
- * $descriptionTruncSize properties
- * @return string the formatted description
- */
- function getDescription() {
- $descriptionField = new FeedHtmlField($this->description);
- $descriptionField->syndicateHtml = $this->descriptionHtmlSyndicated;
- $descriptionField->truncSize = $this->descriptionTruncSize;
- return $descriptionField->output();
- }
-
-}
-
-
-/**
- * An FeedHtmlField describes and generates
- * a feed, item or image html field (probably a description). Output is
- * generated based on $truncSize, $syndicateHtml properties.
- * @author Pascal Van Hecke <feedcreator.class.php@vanhecke.info>
- * @version 1.6
- */
-class FeedHtmlField {
- /**
- * Mandatory attributes of a FeedHtmlField.
- */
- var $rawFieldContent;
-
- /**
- * Optional attributes of a FeedHtmlField.
- *
- */
- var $truncSize, $syndicateHtml;
-
- /**
- * Creates a new instance of FeedHtmlField.
- * @param $string: if given, sets the rawFieldContent property
- */
- function FeedHtmlField($parFieldContent) {
- if ($parFieldContent) {
- $this->rawFieldContent = $parFieldContent;
- }
- }
-
-
- /**
- * Creates the right output, depending on $truncSize, $syndicateHtml properties.
- * @return string the formatted field
- */
- function output() {
- // when field available and syndicated in html we assume
- // - valid html in $rawFieldContent and we enclose in CDATA tags
- // - no truncation (truncating risks producing invalid html)
- if (!$this->rawFieldContent) {
- $result = "";
- } elseif ($this->syndicateHtml) {
- $result = "<![CDATA[".$this->rawFieldContent."]]>";
- } else {
- if ($this->truncSize and is_int($this->truncSize)) {
- $result = FeedCreator::iTrunc(htmlspecialchars($this->rawFieldContent),$this->truncSize);
- } else {
- $result = htmlspecialchars($this->rawFieldContent);
- }
- }
- return $result;
- }
-
-}
-
-
-
-/**
- * UniversalFeedCreator lets you choose during runtime which
- * format to build.
- * For general usage of a feed class, see the FeedCreator class
- * below or the example above.
- *
- * @since 1.3
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- */
-class UniversalFeedCreator extends FeedCreator {
- var $_feed;
-
- function _setFormat($format) {
- switch (strtoupper($format)) {
-
- case "2.0":
- // fall through
- case "RSS2.0":
- $this->_feed = new RSSCreator20();
- break;
-
- case "1.0":
- // fall through
- case "RSS1.0":
- $this->_feed = new RSSCreator10();
- break;
-
- case "0.91":
- // fall through
- case "RSS0.91":
- $this->_feed = new RSSCreator091();
- break;
-
- case "PIE0.1":
- $this->_feed = new PIECreator01();
- break;
-
- case "MBOX":
- $this->_feed = new MBOXCreator();
- break;
-
- case "OPML":
- $this->_feed = new OPMLCreator();
- break;
-
- case "ATOM":
- // fall through: always the latest ATOM version
-
- case "ATOM0.3":
- $this->_feed = new AtomCreator03();
- break;
-
- case "HTML":
- $this->_feed = new HTMLCreator();
- break;
-
- case "JS":
- // fall through
- case "JAVASCRIPT":
- $this->_feed = new JSCreator();
- break;
-
- default:
- $this->_feed = new RSSCreator091();
- break;
- }
-
- $vars = get_object_vars($this);
- foreach ($vars as $key => $value) {
- // prevent overwriting of properties "contentType", "encoding"; do not copy "_feed" itself
- if (!in_array($key, array("_feed", "contentType", "encoding"))) {
- $this->_feed->{$key} = $this->{$key};
- }
- }
- }
-
- /**
- * Creates a syndication feed based on the items previously added.
- *
- * @see FeedCreator::addItem()
- * @param string format format the feed should comply to. Valid values are:
- * "PIE0.1", "mbox", "RSS0.91", "RSS1.0", "RSS2.0", "OPML", "ATOM0.3", "HTML", "JS"
- * @return string the contents of the feed.
- */
- function createFeed($format = "RSS0.91") {
- $this->_setFormat($format);
- return $this->_feed->createFeed();
- }
-
-
-
- /**
- * Saves this feed as a file on the local disk. After the file is saved, an HTTP redirect
- * header may be sent to redirect the use to the newly created file.
- * @since 1.4
- *
- * @param string format format the feed should comply to. Valid values are:
- * "PIE0.1" (deprecated), "mbox", "RSS0.91", "RSS1.0", "RSS2.0", "OPML", "ATOM", "ATOM0.3", "HTML", "JS"
- * @param string filename optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()).
- * @param boolean displayContents optional send the content of the file or not. If true, the file will be sent in the body of the response.
- */
- function saveFeed($format="RSS0.91", $filename="", $displayContents=true) {
- $this->_setFormat($format);
- $this->_feed->saveFeed($filename, $displayContents);
- }
-
-
- /**
- * Turns on caching and checks if there is a recent version of this feed in the cache.
- * If there is, an HTTP redirect header is sent.
- * To effectively use caching, you should create the FeedCreator object and call this method
- * before anything else, especially before you do the time consuming task to build the feed
- * (web fetching, for example).
- *
- * @param string format format the feed should comply to. Valid values are:
- * "PIE0.1" (deprecated), "mbox", "RSS0.91", "RSS1.0", "RSS2.0", "OPML", "ATOM0.3".
- * @param filename string optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()).
- * @param timeout int optional the timeout in seconds before a cached version is refreshed (defaults to 3600 = 1 hour)
- */
- function useCached($format="RSS0.91", $filename="", $timeout=3600) {
- $this->_setFormat($format);
- $this->_feed->useCached($filename, $timeout);
- }
-
-}
-
-
-/**
- * FeedCreator is the abstract base implementation for concrete
- * implementations that implement a specific format of syndication.
- *
- * @abstract
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- * @since 1.4
- */
-class FeedCreator extends HtmlDescribable {
-
- /**
- * Mandatory attributes of a feed.
- */
- var $title, $description, $link;
-
-
- /**
- * Optional attributes of a feed.
- */
- var $syndicationURL, $image, $language, $copyright, $pubDate, $lastBuildDate, $editor, $editorEmail, $webmaster, $category, $docs, $ttl, $rating, $skipHours, $skipDays;
-
- /**
- * The url of the external xsl stylesheet used to format the naked rss feed.
- * Ignored in the output when empty.
- */
- var $xslStyleSheet = "";
-
-
- /**
- * @access private
- */
- var $items = Array();
-
-
- /**
- * This feed's MIME content type.
- * @since 1.4
- * @access private
- */
- var $contentType = "application/xml";
-
-
- /**
- * This feed's character encoding.
- * @since 1.6.1
- **/
- var $encoding = "ISO-8859-1";
-
-
- /**
- * Any additional elements to include as an assiciated array. All $key => $value pairs
- * will be included unencoded in the feed in the form
- * <$key>$value</$key>
- * Again: No encoding will be used! This means you can invalidate or enhance the feed
- * if $value contains markup. This may be abused to embed tags not implemented by
- * the FeedCreator class used.
- */
- var $additionalElements = Array();
-
-
- /**
- * Adds an FeedItem to the feed.
- *
- * @param object FeedItem $item The FeedItem to add to the feed.
- * @access public
- */
- function addItem($item) {
- $this->items[] = $item;
- }
-
-
- /**
- * Truncates a string to a certain length at the most sensible point.
- * First, if there's a '.' character near the end of the string, the string is truncated after this character.
- * If there is no '.', the string is truncated after the last ' ' character.
- * If the string is truncated, " ..." is appended.
- * If the string is already shorter than $length, it is returned unchanged.
- *
- * @static
- * @param string string A string to be truncated.
- * @param int length the maximum length the string should be truncated to
- * @return string the truncated string
- */
- function iTrunc($string, $length) {
- if (strlen($string)<=$length) {
- return $string;
- }
-
- $pos = strrpos($string,".");
- if ($pos>=$length-4) {
- $string = substr($string,0,$length-4);
- $pos = strrpos($string,".");
- }
- if ($pos>=$length*0.4) {
- return substr($string,0,$pos+1)." ...";
- }
-
- $pos = strrpos($string," ");
- if ($pos>=$length-4) {
- $string = substr($string,0,$length-4);
- $pos = strrpos($string," ");
- }
- if ($pos>=$length*0.4) {
- return substr($string,0,$pos)." ...";
- }
-
- return substr($string,0,$length-4)." ...";
-
- }
-
-
- /**
- * Creates a comment indicating the generator of this feed.
- * The format of this comment seems to be recognized by
- * Syndic8.com.
- */
- function _createGeneratorComment() {
- return "<!-- generator=\"".FEEDCREATOR_VERSION."\" -->\n";
- }
-
-
- /**
- * Creates a string containing all additional elements specified in
- * $additionalElements.
- * @param elements array an associative array containing key => value pairs
- * @param indentString string a string that will be inserted before every generated line
- * @return string the XML tags corresponding to $additionalElements
- */
- function _createAdditionalElements($elements, $indentString="") {
- $ae = "";
- if (is_array($elements)) {
- foreach($elements AS $key => $value) {
- $ae.= $indentString."<$key>$value</$key>\n";
- }
- }
- return $ae;
- }
-
- function _createStylesheetReferences() {
- $xml = "";
- if ($this->cssStyleSheet) $xml .= "<?xml-stylesheet href=\"".$this->cssStyleSheet."\" type=\"text/css\"?>\n";
- if ($this->xslStyleSheet) $xml .= "<?xml-stylesheet href=\"".$this->xslStyleSheet."\" type=\"text/xsl\"?>\n";
- return $xml;
- }
-
-
- /**
- * Builds the feed's text.
- * @abstract
- * @return string the feed's complete text
- */
- function createFeed() {
- }
-
- /**
- * Generate a filename for the feed cache file. The result will be $_SERVER["PHP_SELF"] with the extension changed to .xml.
- * For example:
- *
- * echo $_SERVER["PHP_SELF"]."\n";
- * echo FeedCreator::_generateFilename();
- *
- * would produce:
- *
- * /rss/latestnews.php
- * latestnews.xml
- *
- * @return string the feed cache filename
- * @since 1.4
- * @access private
- */
- function _generateFilename() {
- $fileInfo = pathinfo($_SERVER["PHP_SELF"]);
- return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".xml";
- }
-
-
- /**
- * @since 1.4
- * @access private
- */
- function _redirect($filename) {
- // attention, heavily-commented-out-area
-
- // maybe use this in addition to file time checking
- //Header("Expires: ".date("r",time()+$this->_timeout));
-
- /* no caching at all, doesn't seem to work as good:
- Header("Cache-Control: no-cache");
- Header("Pragma: no-cache");
- */
-
- // HTTP redirect, some feed readers' simple HTTP implementations don't follow it
- //Header("Location: ".$filename);
-
- Header("Content-Type: ".$this->contentType."; charset=".$this->encoding."; filename=".basename($filename));
- Header("Content-Disposition: inline; filename=".basename($filename));
- readfile($filename, "r");
- die();
- }
-
- /**
- * Turns on caching and checks if there is a recent version of this feed in the cache.
- * If there is, an HTTP redirect header is sent.
- * To effectively use caching, you should create the FeedCreator object and call this method
- * before anything else, especially before you do the time consuming task to build the feed
- * (web fetching, for example).
- * @since 1.4
- * @param filename string optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()).
- * @param timeout int optional the timeout in seconds before a cached version is refreshed (defaults to 3600 = 1 hour)
- */
- function useCached($filename="", $timeout=3600) {
- $this->_timeout = $timeout;
- if ($filename=="") {
- $filename = $this->_generateFilename();
- }
- if (file_exists($filename) AND (time()-filemtime($filename) < $timeout)) {
- $this->_redirect($filename);
- }
- }
-
-
- /**
- * Saves this feed as a file on the local disk. After the file is saved, a redirect
- * header may be sent to redirect the user to the newly created file.
- * @since 1.4
- *
- * @param filename string optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()).
- * @param redirect boolean optional send an HTTP redirect header or not. If true, the user will be automatically redirected to the created file.
- */
- function saveFeed($filename="", $displayContents=true) {
- if ($filename=="") {
- $filename = $this->_generateFilename();
- }
- $feedFile = fopen($filename, "w+");
- if ($feedFile) {
- fputs($feedFile,$this->createFeed());
- fclose($feedFile);
- if ($displayContents) {
- $this->_redirect($filename);
- }
- } else {
- echo "<br /><strong>Error creating feed file, please check write permissions.</strong><br />";
- }
- }
-
-}
-
-
-/**
- * FeedDate is an internal class that stores a date for a feed or feed item.
- * Usually, you won't need to use this.
- */
-class FeedDate {
- var $unix;
-
- /**
- * Creates a new instance of FeedDate representing a given date.
- * Accepts RFC 822, ISO 8601 date formats as well as unix time stamps.
- * @param mixed $dateString optional the date this FeedDate will represent. If not specified, the current date and time is used.
- */
- function FeedDate($dateString="") {
- if ($dateString=="") $dateString = date("r");
-
- if (is_integer($dateString)) {
- $this->unix = $dateString;
- return;
- }
- if (preg_match("~(?:(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun),\\s+)?(\\d{1,2})\\s+([a-zA-Z]{3})\\s+(\\d{4})\\s+(\\d{2}):(\\d{2}):(\\d{2})\\s+(.*)~",$dateString,$matches)) {
- $months = Array("Jan"=>1,"Feb"=>2,"Mar"=>3,"Apr"=>4,"May"=>5,"Jun"=>6,"Jul"=>7,"Aug"=>8,"Sep"=>9,"Oct"=>10,"Nov"=>11,"Dec"=>12);
- $this->unix = mktime($matches[4],$matches[5],$matches[6],$months[$matches[2]],$matches[1],$matches[3]);
- if (substr($matches[7],0,1)=='+' OR substr($matches[7],0,1)=='-') {
- $tzOffset = (substr($matches[7],0,3) * 60 + substr($matches[7],-2)) * 60;
- } else {
- if (strlen($matches[7])==1) {
- $oneHour = 3600;
- $ord = ord($matches[7]);
- if ($ord < ord("M")) {
- $tzOffset = (ord("A") - $ord - 1) * $oneHour;
- } elseif ($ord >= ord("M") AND $matches[7]!="Z") {
- $tzOffset = ($ord - ord("M")) * $oneHour;
- } elseif ($matches[7]=="Z") {
- $tzOffset = 0;
- }
- }
- switch ($matches[7]) {
- case "UT":
- case "GMT": $tzOffset = 0;
- }
- }
- $this->unix += $tzOffset;
- return;
- }
- if (preg_match("~(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2})(.*)~",$dateString,$matches)) {
- $this->unix = mktime($matches[4],$matches[5],$matches[6],$matches[2],$matches[3],$matches[1]);
- if (substr($matches[7],0,1)=='+' OR substr($matches[7],0,1)=='-') {
- $tzOffset = (substr($matches[7],0,3) * 60 + substr($matches[7],-2)) * 60;
- } else {
- if ($matches[7]=="Z") {
- $tzOffset = 0;
- }
- }
- $this->unix += $tzOffset;
- return;
- }
- $this->unix = 0;
- }
-
- /**
- * Gets the date stored in this FeedDate as an RFC 822 date.
- *
- * @return a date in RFC 822 format
- */
- function rfc822() {
- //return gmdate("r",$this->unix);
- $date = gmdate("D, d M Y H:i:s", $this->unix);
- if (TIME_ZONE!="") $date .= " ".str_replace(":","",TIME_ZONE);
- return $date;
- }
-
- /**
- * Gets the date stored in this FeedDate as an ISO 8601 date.
- *
- * @return a date in ISO 8601 format
- */
- function iso8601() {
- $date = gmdate("Y-m-d\TH:i:sO",$this->unix);
- $date = substr($date,0,22) . ':' . substr($date,-2);
- if (TIME_ZONE!="") $date = str_replace("+00:00",TIME_ZONE,$date);
- return $date;
- }
-
- /**
- * Gets the date stored in this FeedDate as unix time stamp.
- *
- * @return a date as a unix time stamp
- */
- function unix() {
- return $this->unix;
- }
-}
-
-
-/**
- * RSSCreator10 is a FeedCreator that implements RDF Site Summary (RSS) 1.0.
- *
- * @see http://www.purl.org/rss/1.0/
- * @since 1.3
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- */
-class RSSCreator10 extends FeedCreator {
-
- /**
- * Builds the RSS feed's text. The feed will be compliant to RDF Site Summary (RSS) 1.0.
- * The feed will contain all items previously added in the same order.
- * @return string the feed's complete text
- */
- function createFeed() {
- $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
- $feed.= $this->_createGeneratorComment();
- if ($this->cssStyleSheet=="") {
- $cssStyleSheet = "http://www.w3.org/2000/08/w3c-synd/style.css";
- }
- $feed.= $this->_createStylesheetReferences();
- $feed.= "<rdf:RDF\n";
- $feed.= " xmlns=\"http://purl.org/rss/1.0/\"\n";
- $feed.= " xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n";
- $feed.= " xmlns:slash=\"http://purl.org/rss/1.0/modules/slash/\"\n";
- $feed.= " xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n";
- $feed.= " <channel rdf:about=\"".$this->syndicationURL."\">\n";
- $feed.= " <title>".htmlspecialchars($this->title)."</title>\n";
- $feed.= " <description>".htmlspecialchars($this->description)."</description>\n";
- $feed.= " <link>".$this->link."</link>\n";
- if ($this->image!=null) {
- $feed.= " <image rdf:resource=\"".$this->image->url."\" />\n";
- }
- $now = new FeedDate();
- $feed.= " <dc:date>".htmlspecialchars($now->iso8601())."</dc:date>\n";
- $feed.= " <items>\n";
- $feed.= " <rdf:Seq>\n";
- for ($i=0;$i<count($this->items);$i++) {
- $feed.= " <rdf:li rdf:resource=\"".htmlspecialchars($this->items[$i]->link)."\"/>\n";
- }
- $feed.= " </rdf:Seq>\n";
- $feed.= " </items>\n";
- $feed.= " </channel>\n";
- if ($this->image!=null) {
- $feed.= " <image rdf:about=\"".$this->image->url."\">\n";
- $feed.= " <title>".$this->image->title."</title>\n";
- $feed.= " <link>".$this->image->link."</link>\n";
- $feed.= " <url>".$this->image->url."</url>\n";
- $feed.= " </image>\n";
- }
- $feed.= $this->_createAdditionalElements($this->additionalElements, " ");
-
- for ($i=0;$i<count($this->items);$i++) {
- $feed.= " <item rdf:about=\"".htmlspecialchars($this->items[$i]->link)."\">\n";
- //$feed.= " <dc:type>Posting</dc:type>\n";
- $feed.= " <dc:format>text/html</dc:format>\n";
- if ($this->items[$i]->date!=null) {
- $itemDate = new FeedDate($this->items[$i]->date);
- $feed.= " <dc:date>".htmlspecialchars($itemDate->iso8601())."</dc:date>\n";
- }
- if ($this->items[$i]->source!="") {
- $feed.= " <dc:source>".htmlspecialchars($this->items[$i]->source)."</dc:source>\n";
- }
- if ($this->items[$i]->author!="") {
- $feed.= " <dc:creator>".htmlspecialchars($this->items[$i]->author)."</dc:creator>\n";
- }
- $feed.= " <title>".htmlspecialchars(strip_tags(strtr($this->items[$i]->title,"\n\r"," ")))."</title>\n";
- $feed.= " <link>".htmlspecialchars($this->items[$i]->link)."</link>\n";
- $feed.= " <description>".htmlspecialchars($this->items[$i]->description)."</description>\n";
- $feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, " ");
- $feed.= " </item>\n";
- }
- $feed.= "</rdf:RDF>\n";
- return $feed;
- }
-}
-
-
-
-/**
- * RSSCreator091 is a FeedCreator that implements RSS 0.91 Spec, revision 3.
- *
- * @see http://my.netscape.com/publish/formats/rss-spec-0.91.html
- * @since 1.3
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- */
-class RSSCreator091 extends FeedCreator {
-
- /**
- * Stores this RSS feed's version number.
- * @access private
- */
- var $RSSVersion;
-
- function RSSCreator091() {
- $this->_setRSSVersion("0.91");
- $this->contentType = "application/rss+xml";
- }
-
- /**
- * Sets this RSS feed's version number.
- * @access private
- */
- function _setRSSVersion($version) {
- $this->RSSVersion = $version;
- }
-
- /**
- * Builds the RSS feed's text. The feed will be compliant to RDF Site Summary (RSS) 1.0.
- * The feed will contain all items previously added in the same order.
- * @return string the feed's complete text
- */
- function createFeed() {
- $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
- $feed.= $this->_createGeneratorComment();
- $feed.= $this->_createStylesheetReferences();
- $feed.= "<rss version=\"".$this->RSSVersion."\" xmlns:atom=\"http://www.w3.org/2005/Atom\">\n";
- $feed.= " <channel>\n";
- $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars($this->title),100)."</title>\n";
- $this->descriptionTruncSize = 500;
- $feed.= " <description>".$this->getDescription()."</description>\n";
- $feed.= " <link>".$this->link."</link>\n";
- $feed.= " <atom:link href=\"".$this->syndicationURL."\" rel=\"self\" type=\"application/rss+xml\" />\n";
- $now = new FeedDate();
- $feed.= " <lastBuildDate>".htmlspecialchars($now->rfc822())."</lastBuildDate>\n";
- $feed.= " <generator>".FEEDCREATOR_VERSION."</generator>\n";
-
- if ($this->image!=null) {
- $feed.= " <image>\n";
- $feed.= " <url>".$this->image->url."</url>\n";
- $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars($this->image->title),100)."</title>\n";
- $feed.= " <link>".$this->image->link."</link>\n";
- if ($this->image->width!="") {
- $feed.= " <width>".$this->image->width."</width>\n";
- }
- if ($this->image->height!="") {
- $feed.= " <height>".$this->image->height."</height>\n";
- }
- if ($this->image->description!="") {
- $feed.= " <description>".$this->image->getDescription()."</description>\n";
- }
- $feed.= " </image>\n";
- }
- if ($this->language!="") {
- $feed.= " <language>".$this->language."</language>\n";
- }
- if ($this->copyright!="") {
- $feed.= " <copyright>".FeedCreator::iTrunc(htmlspecialchars($this->copyright),100)."</copyright>\n";
- }
- if ($this->editor!="") {
- $feed.= " <managingEditor>".FeedCreator::iTrunc(htmlspecialchars($this->editor),100)."</managingEditor>\n";
- }
- if ($this->webmaster!="") {
- $feed.= " <webMaster>".FeedCreator::iTrunc(htmlspecialchars($this->webmaster),100)."</webMaster>\n";
- }
- if ($this->pubDate!="") {
- $pubDate = new FeedDate($this->pubDate);
- $feed.= " <pubDate>".htmlspecialchars($pubDate->rfc822())."</pubDate>\n";
- }
- if ($this->category!="") {
- $feed.= " <category>".htmlspecialchars($this->category)."</category>\n";
- }
- if ($this->docs!="") {
- $feed.= " <docs>".FeedCreator::iTrunc(htmlspecialchars($this->docs),500)."</docs>\n";
- }
- if ($this->ttl!="") {
- $feed.= " <ttl>".htmlspecialchars($this->ttl)."</ttl>\n";
- }
- if ($this->rating!="") {
- $feed.= " <rating>".FeedCreator::iTrunc(htmlspecialchars($this->rating),500)."</rating>\n";
- }
- if ($this->skipHours!="") {
- $feed.= " <skipHours>".htmlspecialchars($this->skipHours)."</skipHours>\n";
- }
- if ($this->skipDays!="") {
- $feed.= " <skipDays>".htmlspecialchars($this->skipDays)."</skipDays>\n";
- }
- $feed.= $this->_createAdditionalElements($this->additionalElements, " ");
-
- for ($i=0;$i<count($this->items);$i++) {
- $feed.= " <item>\n";
- $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100)."</title>\n";
- $feed.= " <link>".htmlspecialchars($this->items[$i]->link)."</link>\n";
- $feed.= " <description>".$this->items[$i]->getDescription()."</description>\n";
-
- if ($this->items[$i]->author!="") {
- $feed.= " <author>".htmlspecialchars($this->items[$i]->author)."</author>\n";
- }
- /*
- // on hold
- if ($this->items[$i]->source!="") {
- $feed.= " <source>".htmlspecialchars($this->items[$i]->source)."</source>\n";
- }
- */
- if ($this->items[$i]->category!="") {
- $feed.= " <category>".htmlspecialchars($this->items[$i]->category)."</category>\n";
- }
- if ($this->items[$i]->comments!="") {
- $feed.= " <comments>".htmlspecialchars($this->items[$i]->comments)."</comments>\n";
- }
- if ($this->items[$i]->date!="") {
- $itemDate = new FeedDate($this->items[$i]->date);
- $feed.= " <pubDate>".htmlspecialchars($itemDate->rfc822())."</pubDate>\n";
- }
- if ($this->items[$i]->guid!="") {
- $feed.= " <guid>".htmlspecialchars($this->items[$i]->guid)."</guid>\n";
- }
- $feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, " ");
- $feed.= " </item>\n";
- }
- $feed.= " </channel>\n";
- $feed.= "</rss>\n";
- return $feed;
- }
-}
-
-
-
-/**
- * RSSCreator20 is a FeedCreator that implements RDF Site Summary (RSS) 2.0.
- *
- * @see http://backend.userland.com/rss
- * @since 1.3
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- */
-class RSSCreator20 extends RSSCreator091 {
-
- function RSSCreator20() {
- parent::_setRSSVersion("2.0");
- }
-
-}
-
-
-/**
- * PIECreator01 is a FeedCreator that implements the emerging PIE specification,
- * as in http://intertwingly.net/wiki/pie/Syntax.
- *
- * @deprecated
- * @since 1.3
- * @author Scott Reynen <scott@randomchaos.com> and Kai Blankenhorn <kaib@bitfolge.de>
- */
-class PIECreator01 extends FeedCreator {
-
- function PIECreator01() {
- $this->encoding = "utf-8";
- }
-
- function createFeed() {
- $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
- $feed.= $this->_createStylesheetReferences();
- $feed.= "<feed version=\"0.1\" xmlns=\"http://example.com/newformat#\">\n";
- $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars($this->title),100)."</title>\n";
- $this->truncSize = 500;
- $feed.= " <subtitle>".$this->getDescription()."</subtitle>\n";
- $feed.= " <link>".$this->link."</link>\n";
- for ($i=0;$i<count($this->items);$i++) {
- $feed.= " <entry>\n";
- $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100)."</title>\n";
- $feed.= " <link>".htmlspecialchars($this->items[$i]->link)."</link>\n";
- $itemDate = new FeedDate($this->items[$i]->date);
- $feed.= " <created>".htmlspecialchars($itemDate->iso8601())."</created>\n";
- $feed.= " <issued>".htmlspecialchars($itemDate->iso8601())."</issued>\n";
- $feed.= " <modified>".htmlspecialchars($itemDate->iso8601())."</modified>\n";
- $feed.= " <id>".htmlspecialchars($this->items[$i]->guid)."</id>\n";
- if ($this->items[$i]->author!="") {
- $feed.= " <author>\n";
- $feed.= " <name>".htmlspecialchars($this->items[$i]->author)."</name>\n";
- if ($this->items[$i]->authorEmail!="") {
- $feed.= " <email>".$this->items[$i]->authorEmail."</email>\n";
- }
- $feed.=" </author>\n";
- }
- $feed.= " <content type=\"text/html\" xml:lang=\"en-us\">\n";
- $feed.= " <div xmlns=\"http://www.w3.org/1999/xhtml\">".$this->items[$i]->getDescription()."</div>\n";
- $feed.= " </content>\n";
- $feed.= " </entry>\n";
- }
- $feed.= "</feed>\n";
- return $feed;
- }
-}
-
-
-/**
- * AtomCreator03 is a FeedCreator that implements the atom specification,
- * as in http://www.intertwingly.net/wiki/pie/FrontPage.
- * Please note that just by using AtomCreator03 you won't automatically
- * produce valid atom files. For example, you have to specify either an editor
- * for the feed or an author for every single feed item.
- *
- * Some elements have not been implemented yet. These are (incomplete list):
- * author URL, item author's email and URL, item contents, alternate links,
- * other link content types than text/html. Some of them may be created with
- * AtomCreator03::additionalElements.
- *
- * @see FeedCreator#additionalElements
- * @since 1.6
- * @author Kai Blankenhorn <kaib@bitfolge.de>, Scott Reynen <scott@randomchaos.com>
- */
-class AtomCreator03 extends FeedCreator {
-
- function AtomCreator03() {
- $this->contentType = "application/atom+xml";
- $this->encoding = "utf-8";
- }
-
- function createFeed() {
- $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
- $feed.= $this->_createGeneratorComment();
- $feed.= $this->_createStylesheetReferences();
- $feed.= "<feed version=\"0.3\" xmlns=\"http://purl.org/atom/ns#\"";
- if ($this->language!="") {
- $feed.= " xml:lang=\"".$this->language."\"";
- }
- $feed.= ">\n";
- $feed.= " <title>".htmlspecialchars($this->title)."</title>\n";
- $feed.= " <tagline>".htmlspecialchars($this->description)."</tagline>\n";
- $feed.= " <link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->link)."\"/>\n";
- $feed.= " <id>".htmlspecialchars($this->link)."</id>\n";
- $now = new FeedDate();
- $feed.= " <modified>".htmlspecialchars($now->iso8601())."</modified>\n";
- if ($this->editor!="") {
- $feed.= " <author>\n";
- $feed.= " <name>".$this->editor."</name>\n";
- if ($this->editorEmail!="") {
- $feed.= " <email>".$this->editorEmail."</email>\n";
- }
- $feed.= " </author>\n";
- }
- $feed.= " <generator>".FEEDCREATOR_VERSION."</generator>\n";
- $feed.= $this->_createAdditionalElements($this->additionalElements, " ");
- for ($i=0;$i<count($this->items);$i++) {
- $feed.= " <entry>\n";
- $feed.= " <title>".htmlspecialchars(strip_tags($this->items[$i]->title))."</title>\n";
- $feed.= " <link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->items[$i]->link)."\"/>\n";
- if ($this->items[$i]->date=="") {
- $this->items[$i]->date = time();
- }
- $itemDate = new FeedDate($this->items[$i]->date);
- $feed.= " <created>".htmlspecialchars($itemDate->iso8601())."</created>\n";
- $feed.= " <issued>".htmlspecialchars($itemDate->iso8601())."</issued>\n";
- $feed.= " <modified>".htmlspecialchars($itemDate->iso8601())."</modified>\n";
- $feed.= " <id>".htmlspecialchars($this->items[$i]->link)."</id>\n";
- $feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, " ");
- if ($this->items[$i]->author!="") {
- $feed.= " <author>\n";
- $feed.= " <name>".htmlspecialchars($this->items[$i]->author)."</name>\n";
- $feed.= " </author>\n";
- }
- if ($this->items[$i]->description!="") {
- $feed.= " <summary>".htmlspecialchars($this->items[$i]->description)."</summary>\n";
- }
- $feed.= " </entry>\n";
- }
- $feed.= "</feed>\n";
- return $feed;
- }
-}
-
-
-/**
- * MBOXCreator is a FeedCreator that implements the mbox format
- * as described in http://www.qmail.org/man/man5/mbox.html
- *
- * @since 1.3
- * @author Kai Blankenhorn <kaib@bitfolge.de>
- */
-class MBOXCreator extends FeedCreator {
-
- function MBOXCreator() {
- $this->contentType = "text/plain";
- $this->encoding = "ISO-8859-15";
- }
-
- function qp_enc($input = "", $line_max = 76) {
- $hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F');
- $lines = preg_split("/(?:\r\n|\r|\n)/", $input);
- $eol = "\r\n";
- $escape = "=";
- $output = "";
- while( list(, $line) = each($lines) ) {
- //$line = rtrim($line); // remove trailing white space -> no =20\r\n necessary
- $linlen = strlen($line);
- $newline = "";
- for($i = 0; $i < $linlen; $i++) {
- $c = substr($line, $i, 1);
- $dec = ord($c);
- if ( ($dec == 32) && ($i == ($linlen - 1)) ) { // convert space at eol only
- $c = "=20";
- } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) { // always encode "\t", which is *not* required
- $h2 = floor($dec/16); $h1 = floor($dec%16);
- $c = $escape.$hex["$h2"].$hex["$h1"];
- }
- if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted
- $output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay
- $newline = "";
- }
- $newline .= $c;
- } // end of for
- $output .= $newline.$eol;
- }
- return trim($output);
- }
-
-
- /**
- * Builds the MBOX contents.
- * @return string the feed's complete text
- */
- function createFeed() {
- for ($i=0;$i<count($this->items);$i++) {
- if ($this->items[$i]->author!="") {
- $from = $this->items[$i]->author;
- } else {
- $from = $this->title;
- }
- $itemDate = new FeedDate($this->items[$i]->date);
- $feed.= "From ".strtr(MBOXCreator::qp_enc($from)," ","_")." ".date("D M d H:i:s Y",$itemDate->unix())."\n";
- $feed.= "Content-Type: text/plain;\n";
- $feed.= " charset=\"".$this->encoding."\"\n";
- $feed.= "Content-Transfer-Encoding: quoted-printable\n";
- $feed.= "Content-Type: text/plain\n";
- $feed.= "From: \"".MBOXCreator::qp_enc($from)."\"\n";
- $feed.= "Date: ".$itemDate->rfc822()."\n";
- $feed.= "Subject: ".MBOXCreator::qp_enc(FeedCreator::iTrunc($this->items[$i]->title,100))."\n";
- $feed.= "\n";
- $body = chunk_split(MBOXCreator::qp_enc($this->items[$i]->description));
- $feed.= preg_replace("~\nFrom ([^\n]*)(\n?)~","\n>From $1$2\n",$body);
- $feed.= "\n";
- $feed.= "\n";
- }
- return $feed;
- }
-
- /**
- * Generate a filename for the feed cache file. Overridden from FeedCreator to prevent XML data types.
- * @return string the feed cache filename
- * @since 1.4
- * @access private
- */
- function _generateFilename() {
- $fileInfo = pathinfo($_SERVER["PHP_SELF"]);
- return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".mbox";
- }
-}
-
-
-/**
- * OPMLCreator is a FeedCreator that implements OPML 1.0.
- *
- * @see http://opml.scripting.com/spec
- * @author Dirk Clemens, Kai Blankenhorn
- * @since 1.5
- */
-class OPMLCreator extends FeedCreator {
-
- function OPMLCreator() {
- $this->encoding = "utf-8";
- }
-
- function createFeed() {
- $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
- $feed.= $this->_createGeneratorComment();
- $feed.= $this->_createStylesheetReferences();
- $feed.= "<opml xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">\n";
- $feed.= " <head>\n";
- $feed.= " <title>".htmlspecialchars($this->title)."</title>\n";
- if ($this->pubDate!="") {
- $date = new FeedDate($this->pubDate);
- $feed.= " <dateCreated>".$date->rfc822()."</dateCreated>\n";
- }
- if ($this->lastBuildDate!="") {
- $date = new FeedDate($this->lastBuildDate);
- $feed.= " <dateModified>".$date->rfc822()."</dateModified>\n";
- }
- if ($this->editor!="") {
- $feed.= " <ownerName>".$this->editor."</ownerName>\n";
- }
- if ($this->editorEmail!="") {
- $feed.= " <ownerEmail>".$this->editorEmail."</ownerEmail>\n";
- }
- $feed.= " </head>\n";
- $feed.= " <body>\n";
- for ($i=0;$i<count($this->items);$i++) {
- $feed.= " <outline type=\"rss\" ";
- $title = htmlspecialchars(strip_tags(strtr($this->items[$i]->title,"\n\r"," ")));
- $feed.= " title=\"".$title."\"";
- $feed.= " text=\"".$title."\"";
- //$feed.= " description=\"".htmlspecialchars($this->items[$i]->description)."\"";
- $feed.= " url=\"".htmlspecialchars($this->items[$i]->link)."\"";
- $feed.= "/>\n";
- }
- $feed.= " </body>\n";
- $feed.= "</opml>\n";
- return $feed;
- }
-}
-
-
-
-/**
- * HTMLCreator is a FeedCreator that writes an HTML feed file to a specific
- * location, overriding the createFeed method of the parent FeedCreator.
- * The HTML produced can be included over http by scripting languages, or serve
- * as the source for an IFrame.
- * All output by this class is embedded in <div></div> tags to enable formatting
- * using CSS.
- *
- * @author Pascal Van Hecke
- * @since 1.7
- */
-class HTMLCreator extends FeedCreator {
-
- var $contentType = "text/html";
-
- /**
- * Contains HTML to be output at the start of the feed's html representation.
- */
- var $header;
-
- /**
- * Contains HTML to be output at the end of the feed's html representation.
- */
- var $footer ;
-
- /**
- * Contains HTML to be output between entries. A separator is only used in
- * case of multiple entries.
- */
- var $separator;
-
- /**
- * Used to prefix the stylenames to make sure they are unique
- * and do not clash with stylenames on the users' page.
- */
- var $stylePrefix;
-
- /**
- * Determines whether the links open in a new window or not.
- */
- var $openInNewWindow = true;
-
- var $imageAlign ="right";
-
- /**
- * In case of very simple output you may want to get rid of the style tags,
- * hence this variable. There's no equivalent on item level, but of course you can
- * add strings to it while iterating over the items ($this->stylelessOutput .= ...)
- * and when it is non-empty, ONLY the styleless output is printed, the rest is ignored
- * in the function createFeed().
- */
- var $stylelessOutput ="";
-
- /**
- * Writes the HTML.
- * @return string the scripts's complete text
- */
- function createFeed() {
- // if there is styleless output, use the content of this variable and ignore the rest
- if ($this->stylelessOutput!="") {
- return $this->stylelessOutput;
- }
-
- //if no stylePrefix is set, generate it yourself depending on the script name
- if ($this->stylePrefix=="") {
- $this->stylePrefix = str_replace(".", "_", $this->_generateFilename())."_";
- }
-
- //set an openInNewWindow_token_to be inserted or not
- if ($this->openInNewWindow) {
- $targetInsert = " target='_blank'";
- }
-
- // use this array to put the lines in and implode later with "document.write" javascript
- $feedArray = array();
- if ($this->image!=null) {
- $imageStr = "<a href='".$this->image->link."'".$targetInsert.">".
- "<img src='".$this->image->url."' border='0' alt='".
- FeedCreator::iTrunc(htmlspecialchars($this->image->title),100).
- "' align='".$this->imageAlign."' ";
- if ($this->image->width) {
- $imageStr .=" width='".$this->image->width. "' ";
- }
- if ($this->image->height) {
- $imageStr .=" height='".$this->image->height."' ";
- }
- $imageStr .="/></a>";
- $feedArray[] = $imageStr;
- }
-
- if ($this->title) {
- $feedArray[] = "<div class='".$this->stylePrefix."title'><a href='".$this->link."' ".$targetInsert." class='".$this->stylePrefix."title'>".
- FeedCreator::iTrunc(htmlspecialchars($this->title),100)."</a></div>";
- }
- if ($this->getDescription()) {
- $feedArray[] = "<div class='".$this->stylePrefix."description'>".
- str_replace("]]>", "", str_replace("<![CDATA[", "", $this->getDescription())).
- "</div>";
- }
-
- if ($this->header) {
- $feedArray[] = "<div class='".$this->stylePrefix."header'>".$this->header."</div>";
- }
-
- for ($i=0;$i<count($this->items);$i++) {
- if ($this->separator and $i > 0) {
- $feedArray[] = "<div class='".$this->stylePrefix."separator'>".$this->separator."</div>";
- }
-
- if ($this->items[$i]->title) {
- if ($this->items[$i]->link) {
- $feedArray[] =
- "<div class='".$this->stylePrefix."item_title'><a href='".$this->items[$i]->link."' class='".$this->stylePrefix.
- "item_title'".$targetInsert.">".FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100).
- "</a></div>";
- } else {
- $feedArray[] =
- "<div class='".$this->stylePrefix."item_title'>".
- FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100).
- "</div>";
- }
- }
- if ($this->items[$i]->getDescription()) {
- $feedArray[] =
- "<div class='".$this->stylePrefix."item_description'>".
- str_replace("]]>", "", str_replace("<![CDATA[", "", $this->items[$i]->getDescription())).
- "</div>";
- }
- }
- if ($this->footer) {
- $feedArray[] = "<div class='".$this->stylePrefix."footer'>".$this->footer."</div>";
- }
-
- $feed= "".join($feedArray, "\r\n");
- return $feed;
- }
-
- /**
- * Overrrides parent to produce .html extensions
- *
- * @return string the feed cache filename
- * @since 1.4
- * @access private
- */
- function _generateFilename() {
- $fileInfo = pathinfo($_SERVER["PHP_SELF"]);
- return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".html";
- }
-}
-
-
-/**
- * JSCreator is a class that writes a js file to a specific
- * location, overriding the createFeed method of the parent HTMLCreator.
- *
- * @author Pascal Van Hecke
- */
-class JSCreator extends HTMLCreator {
- var $contentType = "text/javascript";
-
- /**
- * writes the javascript
- * @return string the scripts's complete text
- */
- function createFeed()
- {
- $feed = parent::createFeed();
- $feedArray = explode("\n",$feed);
-
- $jsFeed = "";
- foreach ($feedArray as $value) {
- $jsFeed .= "document.write('".trim(addslashes($value))."');\n";
- }
- return $jsFeed;
- }
-
- /**
- * Overrrides parent to produce .js extensions
- *
- * @return string the feed cache filename
- * @since 1.4
- * @access private
- */
- function _generateFilename() {
- $fileInfo = pathinfo($_SERVER["PHP_SELF"]);
- return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".js";
- }
-
-}
-
-
-
-/*** TEST SCRIPT *********************************************************
-
-//include("feedcreator.class.php");
-
-$rss = new UniversalFeedCreator();
-$rss->useCached();
-$rss->title = "PHP news";
-$rss->description = "daily news from the PHP scripting world";
-
-//optional
-//$rss->descriptionTruncSize = 500;
-//$rss->descriptionHtmlSyndicated = true;
-//$rss->xslStyleSheet = "http://feedster.com/rss20.xsl";
-
-$rss->link = "http://www.dailyphp.net/news";
-$rss->feedURL = "http://www.dailyphp.net/".$PHP_SELF;
-
-$image = new FeedImage();
-$image->title = "dailyphp.net logo";
-$image->url = "http://www.dailyphp.net/images/logo.gif";
-$image->link = "http://www.dailyphp.net";
-$image->description = "Feed provided by dailyphp.net. Click to visit.";
-
-//optional
-$image->descriptionTruncSize = 500;
-$image->descriptionHtmlSyndicated = true;
-
-$rss->image = $image;
-
-// get your news items from somewhere, e.g. your database:
-//mysql_select_db($dbHost, $dbUser, $dbPass);
-//$res = mysql_query("SELECT * FROM news ORDER BY newsdate DESC");
-//while ($data = mysql_fetch_object($res)) {
- $item = new FeedItem();
- $item->title = "This is an the test title of an item";
- $item->link = "http://localhost/item/";
- $item->description = "<b>description in </b><br/>HTML";
-
- //optional
- //item->descriptionTruncSize = 500;
- $item->descriptionHtmlSyndicated = true;
-
- $item->date = time();
- $item->source = "http://www.dailyphp.net";
- $item->author = "John Doe";
-
- $rss->addItem($item);
-//}
-
-// valid format strings are: RSS0.91, RSS1.0, RSS2.0, PIE0.1, MBOX, OPML, ATOM0.3, HTML, JS
-echo $rss->saveFeed("RSS0.91", "feed.xml");
-
-
-
-***************************************************************************/
-
-?>
+<?php +/*************************************************************************** + +FeedCreator class v1.7.2 +originally (c) Kai Blankenhorn +www.bitfolge.de +kaib@bitfolge.de +v1.3 work by Scott Reynen (scott@randomchaos.com) and Kai Blankenhorn +v1.5 OPML support by Dirk Clemens + +This library is free software; you can redistribute it and/or +modify it under the terms of the GNU Lesser General Public +License as published by the Free Software Foundation; either +version 2.1 of the License, or (at your option) any later version. + +This library 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 +Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public +License along with this library; if not, write to the Free Software +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +**************************************************************************** + + +Changelog: + +v1.7.2 10-11-04 + license changed to LGPL + +v1.7.1 + fixed a syntax bug + fixed left over debug code + +v1.7 07-18-04 + added HTML and JavaScript feeds (configurable via CSS) (thanks to Pascal Van Hecke) + added HTML descriptions for all feed formats (thanks to Pascal Van Hecke) + added a switch to select an external stylesheet (thanks to Pascal Van Hecke) + changed default content-type to application/xml + added character encoding setting + fixed numerous smaller bugs (thanks to Sören Fuhrmann of golem.de) + improved changing ATOM versions handling (thanks to August Trometer) + improved the UniversalFeedCreator's useCached method (thanks to Sören Fuhrmann of golem.de) + added charset output in HTTP headers (thanks to Sören Fuhrmann of golem.de) + added Slashdot namespace to RSS 1.0 (thanks to Sören Fuhrmann of golem.de) + +v1.6 05-10-04 + added stylesheet to RSS 1.0 feeds + fixed generator comment (thanks Kevin L. Papendick and Tanguy Pruvot) + fixed RFC822 date bug (thanks Tanguy Pruvot) + added TimeZone customization for RFC8601 (thanks Tanguy Pruvot) + fixed Content-type could be empty (thanks Tanguy Pruvot) + fixed author/creator in RSS1.0 (thanks Tanguy Pruvot) + +v1.6 beta 02-28-04 + added Atom 0.3 support (not all features, though) + improved OPML 1.0 support (hopefully - added more elements) + added support for arbitrary additional elements (use with caution) + code beautification :-) + considered beta due to some internal changes + +v1.5.1 01-27-04 + fixed some RSS 1.0 glitches (thanks to Stéphane Vanpoperynghe) + fixed some inconsistencies between documentation and code (thanks to Timothy Martin) + +v1.5 01-06-04 + added support for OPML 1.0 + added more documentation + +v1.4 11-11-03 + optional feed saving and caching + improved documentation + minor improvements + +v1.3 10-02-03 + renamed to FeedCreator, as it not only creates RSS anymore + added support for mbox + tentative support for echo/necho/atom/pie/??? + +v1.2 07-20-03 + intelligent auto-truncating of RSS 0.91 attributes + don't create some attributes when they're not set + documentation improved + fixed a real and a possible bug with date conversions + code cleanup + +v1.1 06-29-03 + added images to feeds + now includes most RSS 0.91 attributes + added RSS 2.0 feeds + +v1.0 06-24-03 + initial release + + + +***************************************************************************/ + +/*** GENERAL USAGE ********************************************************* + +include("feedcreator.class.php"); + +$rss = new UniversalFeedCreator(); +$rss->useCached(); // use cached version if age<1 hour +$rss->title = "PHP news"; +$rss->description = "daily news from the PHP scripting world"; + +//optional +$rss->descriptionTruncSize = 500; +$rss->descriptionHtmlSyndicated = true; + +$rss->link = "http://www.dailyphp.net/news"; +$rss->syndicationURL = "http://www.dailyphp.net/".$_SERVER["PHP_SELF"]; + +$image = new FeedImage(); +$image->title = "dailyphp.net logo"; +$image->url = "http://www.dailyphp.net/images/logo.gif"; +$image->link = "http://www.dailyphp.net"; +$image->description = "Feed provided by dailyphp.net. Click to visit."; + +//optional +$image->descriptionTruncSize = 500; +$image->descriptionHtmlSyndicated = true; + +$rss->image = $image; + +// get your news items from somewhere, e.g. your database: +mysql_select_db($dbHost, $dbUser, $dbPass); +$res = mysql_query("SELECT * FROM news ORDER BY newsdate DESC"); +while ($data = mysql_fetch_object($res)) { + $item = new FeedItem(); + $item->title = $data->title; + $item->link = $data->url; + $item->description = $data->short; + + //optional + item->descriptionTruncSize = 500; + item->descriptionHtmlSyndicated = true; + + $item->date = $data->newsdate; + $item->source = "http://www.dailyphp.net"; + $item->author = "John Doe"; + + $rss->addItem($item); +} + +// valid format strings are: RSS0.91, RSS1.0, RSS2.0, PIE0.1 (deprecated), +// MBOX, OPML, ATOM, ATOM0.3, HTML, JS +echo $rss->saveFeed("RSS1.0", "news/feed.xml"); + + +*************************************************************************** +* A little setup * +**************************************************************************/ + +// your local timezone, set to "" to disable or for GMT +define("TIME_ZONE","+01:00"); + + + + +/** + * Version string. + **/ +define("FEEDCREATOR_VERSION", "FeedCreator 1.7.2"); + + + +/** + * A FeedItem is a part of a FeedCreator feed. + * + * @author Kai Blankenhorn <kaib@bitfolge.de> + * @since 1.3 + */ +class FeedItem extends HtmlDescribable { + /** + * Mandatory attributes of an item. + */ + var $title, $description, $link; + + /** + * Optional attributes of an item. + */ + var $author, $authorEmail, $image, $category, $comments, $guid, $source, $creator; + + /** + * Publishing date of an item. May be in one of the following formats: + * + * RFC 822: + * "Mon, 20 Jan 03 18:05:41 +0400" + * "20 Jan 03 18:05:41 +0000" + * + * ISO 8601: + * "2003-01-20T18:05:41+04:00" + * + * Unix: + * 1043082341 + */ + var $date; + + /** + * Any additional elements to include as an assiciated array. All $key => $value pairs + * will be included unencoded in the feed item in the form + * <$key>$value</$key> + * Again: No encoding will be used! This means you can invalidate or enhance the feed + * if $value contains markup. This may be abused to embed tags not implemented by + * the FeedCreator class used. + */ + var $additionalElements = Array(); + + // on hold + // var $source; +} + + + +/** + * An FeedImage may be added to a FeedCreator feed. + * @author Kai Blankenhorn <kaib@bitfolge.de> + * @since 1.3 + */ +class FeedImage extends HtmlDescribable { + /** + * Mandatory attributes of an image. + */ + var $title, $url, $link; + + /** + * Optional attributes of an image. + */ + var $width, $height, $description; +} + + + +/** + * An HtmlDescribable is an item within a feed that can have a description that may + * include HTML markup. + */ +class HtmlDescribable { + /** + * Indicates whether the description field should be rendered in HTML. + */ + var $descriptionHtmlSyndicated; + + /** + * Indicates whether and to how many characters a description should be truncated. + */ + var $descriptionTruncSize; + + /** + * Returns a formatted description field, depending on descriptionHtmlSyndicated and + * $descriptionTruncSize properties + * @return string the formatted description + */ + function getDescription() { + $descriptionField = new FeedHtmlField($this->description); + $descriptionField->syndicateHtml = $this->descriptionHtmlSyndicated; + $descriptionField->truncSize = $this->descriptionTruncSize; + return $descriptionField->output(); + } + +} + + +/** + * An FeedHtmlField describes and generates + * a feed, item or image html field (probably a description). Output is + * generated based on $truncSize, $syndicateHtml properties. + * @author Pascal Van Hecke <feedcreator.class.php@vanhecke.info> + * @version 1.6 + */ +class FeedHtmlField { + /** + * Mandatory attributes of a FeedHtmlField. + */ + var $rawFieldContent; + + /** + * Optional attributes of a FeedHtmlField. + * + */ + var $truncSize, $syndicateHtml; + + /** + * Creates a new instance of FeedHtmlField. + * @param $string: if given, sets the rawFieldContent property + */ + function FeedHtmlField($parFieldContent) { + if ($parFieldContent) { + $this->rawFieldContent = $parFieldContent; + } + } + + + /** + * Creates the right output, depending on $truncSize, $syndicateHtml properties. + * @return string the formatted field + */ + function output() { + // when field available and syndicated in html we assume + // - valid html in $rawFieldContent and we enclose in CDATA tags + // - no truncation (truncating risks producing invalid html) + if (!$this->rawFieldContent) { + $result = ""; + } elseif ($this->syndicateHtml) { + $result = "<![CDATA[".$this->rawFieldContent."]]>"; + } else { + if ($this->truncSize and is_int($this->truncSize)) { + $result = FeedCreator::iTrunc(htmlspecialchars($this->rawFieldContent),$this->truncSize); + } else { + $result = htmlspecialchars($this->rawFieldContent); + } + } + return $result; + } + +} + + + +/** + * UniversalFeedCreator lets you choose during runtime which + * format to build. + * For general usage of a feed class, see the FeedCreator class + * below or the example above. + * + * @since 1.3 + * @author Kai Blankenhorn <kaib@bitfolge.de> + */ +class UniversalFeedCreator extends FeedCreator { + var $_feed; + + function _setFormat($format) { + switch (strtoupper($format)) { + + case "2.0": + // fall through + case "RSS2.0": + $this->_feed = new RSSCreator20(); + break; + + case "1.0": + // fall through + case "RSS1.0": + $this->_feed = new RSSCreator10(); + break; + + case "0.91": + // fall through + case "RSS0.91": + $this->_feed = new RSSCreator091(); + break; + + case "PIE0.1": + $this->_feed = new PIECreator01(); + break; + + case "MBOX": + $this->_feed = new MBOXCreator(); + break; + + case "OPML": + $this->_feed = new OPMLCreator(); + break; + + case "ATOM": + // fall through: always the latest ATOM version + + case "ATOM0.3": + $this->_feed = new AtomCreator03(); + break; + + case "HTML": + $this->_feed = new HTMLCreator(); + break; + + case "JS": + // fall through + case "JAVASCRIPT": + $this->_feed = new JSCreator(); + break; + + default: + $this->_feed = new RSSCreator091(); + break; + } + + $vars = get_object_vars($this); + foreach ($vars as $key => $value) { + // prevent overwriting of properties "contentType", "encoding"; do not copy "_feed" itself + if (!in_array($key, array("_feed", "contentType", "encoding"))) { + $this->_feed->{$key} = $this->{$key}; + } + } + } + + /** + * Creates a syndication feed based on the items previously added. + * + * @see FeedCreator::addItem() + * @param string format format the feed should comply to. Valid values are: + * "PIE0.1", "mbox", "RSS0.91", "RSS1.0", "RSS2.0", "OPML", "ATOM0.3", "HTML", "JS" + * @return string the contents of the feed. + */ + function createFeed($format = "RSS0.91") { + $this->_setFormat($format); + return $this->_feed->createFeed(); + } + + + + /** + * Saves this feed as a file on the local disk. After the file is saved, an HTTP redirect + * header may be sent to redirect the use to the newly created file. + * @since 1.4 + * + * @param string format format the feed should comply to. Valid values are: + * "PIE0.1" (deprecated), "mbox", "RSS0.91", "RSS1.0", "RSS2.0", "OPML", "ATOM", "ATOM0.3", "HTML", "JS" + * @param string filename optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()). + * @param boolean displayContents optional send the content of the file or not. If true, the file will be sent in the body of the response. + */ + function saveFeed($format="RSS0.91", $filename="", $displayContents=true) { + $this->_setFormat($format); + $this->_feed->saveFeed($filename, $displayContents); + } + + + /** + * Turns on caching and checks if there is a recent version of this feed in the cache. + * If there is, an HTTP redirect header is sent. + * To effectively use caching, you should create the FeedCreator object and call this method + * before anything else, especially before you do the time consuming task to build the feed + * (web fetching, for example). + * + * @param string format format the feed should comply to. Valid values are: + * "PIE0.1" (deprecated), "mbox", "RSS0.91", "RSS1.0", "RSS2.0", "OPML", "ATOM0.3". + * @param filename string optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()). + * @param timeout int optional the timeout in seconds before a cached version is refreshed (defaults to 3600 = 1 hour) + */ + function useCached($format="RSS0.91", $filename="", $timeout=3600) { + $this->_setFormat($format); + $this->_feed->useCached($filename, $timeout); + } + +} + + +/** + * FeedCreator is the abstract base implementation for concrete + * implementations that implement a specific format of syndication. + * + * @abstract + * @author Kai Blankenhorn <kaib@bitfolge.de> + * @since 1.4 + */ +class FeedCreator extends HtmlDescribable { + + /** + * Mandatory attributes of a feed. + */ + var $title, $description, $link; + + + /** + * Optional attributes of a feed. + */ + var $syndicationURL, $image, $language, $copyright, $pubDate, $lastBuildDate, $editor, $editorEmail, $webmaster, $category, $docs, $ttl, $rating, $skipHours, $skipDays; + + /** + * The url of the external xsl stylesheet used to format the naked rss feed. + * Ignored in the output when empty. + */ + var $xslStyleSheet = ""; + + + /** + * @access private + */ + var $items = Array(); + + + /** + * This feed's MIME content type. + * @since 1.4 + * @access private + */ + var $contentType = "application/xml"; + + + /** + * This feed's character encoding. + * @since 1.6.1 + **/ + var $encoding = "ISO-8859-1"; + + + /** + * Any additional elements to include as an assiciated array. All $key => $value pairs + * will be included unencoded in the feed in the form + * <$key>$value</$key> + * Again: No encoding will be used! This means you can invalidate or enhance the feed + * if $value contains markup. This may be abused to embed tags not implemented by + * the FeedCreator class used. + */ + var $additionalElements = Array(); + + + /** + * Adds an FeedItem to the feed. + * + * @param object FeedItem $item The FeedItem to add to the feed. + * @access public + */ + function addItem($item) { + $this->items[] = $item; + } + + + /** + * Truncates a string to a certain length at the most sensible point. + * First, if there's a '.' character near the end of the string, the string is truncated after this character. + * If there is no '.', the string is truncated after the last ' ' character. + * If the string is truncated, " ..." is appended. + * If the string is already shorter than $length, it is returned unchanged. + * + * @static + * @param string string A string to be truncated. + * @param int length the maximum length the string should be truncated to + * @return string the truncated string + */ + function iTrunc($string, $length) { + if (strlen($string)<=$length) { + return $string; + } + + $pos = strrpos($string,"."); + if ($pos>=$length-4) { + $string = substr($string,0,$length-4); + $pos = strrpos($string,"."); + } + if ($pos>=$length*0.4) { + return substr($string,0,$pos+1)." ..."; + } + + $pos = strrpos($string," "); + if ($pos>=$length-4) { + $string = substr($string,0,$length-4); + $pos = strrpos($string," "); + } + if ($pos>=$length*0.4) { + return substr($string,0,$pos)." ..."; + } + + return substr($string,0,$length-4)." ..."; + + } + + + /** + * Creates a comment indicating the generator of this feed. + * The format of this comment seems to be recognized by + * Syndic8.com. + */ + function _createGeneratorComment() { + return "<!-- generator=\"".FEEDCREATOR_VERSION."\" -->\n"; + } + + + /** + * Creates a string containing all additional elements specified in + * $additionalElements. + * @param elements array an associative array containing key => value pairs + * @param indentString string a string that will be inserted before every generated line + * @return string the XML tags corresponding to $additionalElements + */ + function _createAdditionalElements($elements, $indentString="") { + $ae = ""; + if (is_array($elements)) { + foreach($elements AS $key => $value) { + $ae.= $indentString."<$key>$value</$key>\n"; + } + } + return $ae; + } + + function _createStylesheetReferences() { + $xml = ""; + if ($this->cssStyleSheet) $xml .= "<?xml-stylesheet href=\"".$this->cssStyleSheet."\" type=\"text/css\"?>\n"; + if ($this->xslStyleSheet) $xml .= "<?xml-stylesheet href=\"".$this->xslStyleSheet."\" type=\"text/xsl\"?>\n"; + return $xml; + } + + + /** + * Builds the feed's text. + * @abstract + * @return string the feed's complete text + */ + function createFeed() { + } + + /** + * Generate a filename for the feed cache file. The result will be $_SERVER["PHP_SELF"] with the extension changed to .xml. + * For example: + * + * echo $_SERVER["PHP_SELF"]."\n"; + * echo FeedCreator::_generateFilename(); + * + * would produce: + * + * /rss/latestnews.php + * latestnews.xml + * + * @return string the feed cache filename + * @since 1.4 + * @access private + */ + function _generateFilename() { + $fileInfo = pathinfo($_SERVER["PHP_SELF"]); + return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".xml"; + } + + + /** + * @since 1.4 + * @access private + */ + function _redirect($filename) { + // attention, heavily-commented-out-area + + // maybe use this in addition to file time checking + //Header("Expires: ".date("r",time()+$this->_timeout)); + + /* no caching at all, doesn't seem to work as good: + Header("Cache-Control: no-cache"); + Header("Pragma: no-cache"); + */ + + // HTTP redirect, some feed readers' simple HTTP implementations don't follow it + //Header("Location: ".$filename); + + Header("Content-Type: ".$this->contentType."; charset=".$this->encoding."; filename=".basename($filename)); + Header("Content-Disposition: inline; filename=".basename($filename)); + readfile($filename, "r"); + die(); + } + + /** + * Turns on caching and checks if there is a recent version of this feed in the cache. + * If there is, an HTTP redirect header is sent. + * To effectively use caching, you should create the FeedCreator object and call this method + * before anything else, especially before you do the time consuming task to build the feed + * (web fetching, for example). + * @since 1.4 + * @param filename string optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()). + * @param timeout int optional the timeout in seconds before a cached version is refreshed (defaults to 3600 = 1 hour) + */ + function useCached($filename="", $timeout=3600) { + $this->_timeout = $timeout; + if ($filename=="") { + $filename = $this->_generateFilename(); + } + if (file_exists($filename) AND (time()-filemtime($filename) < $timeout)) { + $this->_redirect($filename); + } + } + + + /** + * Saves this feed as a file on the local disk. After the file is saved, a redirect + * header may be sent to redirect the user to the newly created file. + * @since 1.4 + * + * @param filename string optional the filename where a recent version of the feed is saved. If not specified, the filename is $_SERVER["PHP_SELF"] with the extension changed to .xml (see _generateFilename()). + * @param redirect boolean optional send an HTTP redirect header or not. If true, the user will be automatically redirected to the created file. + */ + function saveFeed($filename="", $displayContents=true) { + if ($filename=="") { + $filename = $this->_generateFilename(); + } + $feedFile = fopen($filename, "w+"); + if ($feedFile) { + fputs($feedFile,$this->createFeed()); + fclose($feedFile); + if ($displayContents) { + $this->_redirect($filename); + } + } else { + echo "<br /><strong>Error creating feed file, please check write permissions.</strong><br />"; + } + } + +} + + +/** + * FeedDate is an internal class that stores a date for a feed or feed item. + * Usually, you won't need to use this. + */ +class FeedDate { + var $unix; + + /** + * Creates a new instance of FeedDate representing a given date. + * Accepts RFC 822, ISO 8601 date formats as well as unix time stamps. + * @param mixed $dateString optional the date this FeedDate will represent. If not specified, the current date and time is used. + */ + function FeedDate($dateString="") { + if ($dateString=="") $dateString = date("r"); + + if (is_integer($dateString)) { + $this->unix = $dateString; + return; + } + if (preg_match("~(?:(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun),\\s+)?(\\d{1,2})\\s+([a-zA-Z]{3})\\s+(\\d{4})\\s+(\\d{2}):(\\d{2}):(\\d{2})\\s+(.*)~",$dateString,$matches)) { + $months = Array("Jan"=>1,"Feb"=>2,"Mar"=>3,"Apr"=>4,"May"=>5,"Jun"=>6,"Jul"=>7,"Aug"=>8,"Sep"=>9,"Oct"=>10,"Nov"=>11,"Dec"=>12); + $this->unix = mktime($matches[4],$matches[5],$matches[6],$months[$matches[2]],$matches[1],$matches[3]); + if (substr($matches[7],0,1)=='+' OR substr($matches[7],0,1)=='-') { + $tzOffset = (substr($matches[7],0,3) * 60 + substr($matches[7],-2)) * 60; + } else { + if (strlen($matches[7])==1) { + $oneHour = 3600; + $ord = ord($matches[7]); + if ($ord < ord("M")) { + $tzOffset = (ord("A") - $ord - 1) * $oneHour; + } elseif ($ord >= ord("M") AND $matches[7]!="Z") { + $tzOffset = ($ord - ord("M")) * $oneHour; + } elseif ($matches[7]=="Z") { + $tzOffset = 0; + } + } + switch ($matches[7]) { + case "UT": + case "GMT": $tzOffset = 0; + } + } + $this->unix += $tzOffset; + return; + } + if (preg_match("~(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2})(.*)~",$dateString,$matches)) { + $this->unix = mktime($matches[4],$matches[5],$matches[6],$matches[2],$matches[3],$matches[1]); + if (substr($matches[7],0,1)=='+' OR substr($matches[7],0,1)=='-') { + $tzOffset = (substr($matches[7],0,3) * 60 + substr($matches[7],-2)) * 60; + } else { + if ($matches[7]=="Z") { + $tzOffset = 0; + } + } + $this->unix += $tzOffset; + return; + } + $this->unix = 0; + } + + /** + * Gets the date stored in this FeedDate as an RFC 822 date. + * + * @return a date in RFC 822 format + */ + function rfc822() { + //return gmdate("r",$this->unix); + $date = gmdate("D, d M Y H:i:s", $this->unix); + if (TIME_ZONE!="") $date .= " ".str_replace(":","",TIME_ZONE); + return $date; + } + + /** + * Gets the date stored in this FeedDate as an ISO 8601 date. + * + * @return a date in ISO 8601 format + */ + function iso8601() { + $date = gmdate("Y-m-d\TH:i:sO",$this->unix); + $date = substr($date,0,22) . ':' . substr($date,-2); + if (TIME_ZONE!="") $date = str_replace("+00:00",TIME_ZONE,$date); + return $date; + } + + /** + * Gets the date stored in this FeedDate as unix time stamp. + * + * @return a date as a unix time stamp + */ + function unix() { + return $this->unix; + } +} + + +/** + * RSSCreator10 is a FeedCreator that implements RDF Site Summary (RSS) 1.0. + * + * @see http://www.purl.org/rss/1.0/ + * @since 1.3 + * @author Kai Blankenhorn <kaib@bitfolge.de> + */ +class RSSCreator10 extends FeedCreator { + + /** + * Builds the RSS feed's text. The feed will be compliant to RDF Site Summary (RSS) 1.0. + * The feed will contain all items previously added in the same order. + * @return string the feed's complete text + */ + function createFeed() { + $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n"; + $feed.= $this->_createGeneratorComment(); + if ($this->cssStyleSheet=="") { + $cssStyleSheet = "http://www.w3.org/2000/08/w3c-synd/style.css"; + } + $feed.= $this->_createStylesheetReferences(); + $feed.= "<rdf:RDF\n"; + $feed.= " xmlns=\"http://purl.org/rss/1.0/\"\n"; + $feed.= " xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n"; + $feed.= " xmlns:slash=\"http://purl.org/rss/1.0/modules/slash/\"\n"; + $feed.= " xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n"; + $feed.= " <channel rdf:about=\"".$this->syndicationURL."\">\n"; + $feed.= " <title>".htmlspecialchars($this->title)."</title>\n"; + $feed.= " <description>".htmlspecialchars($this->description)."</description>\n"; + $feed.= " <link>".$this->link."</link>\n"; + if ($this->image!=null) { + $feed.= " <image rdf:resource=\"".$this->image->url."\" />\n"; + } + $now = new FeedDate(); + $feed.= " <dc:date>".htmlspecialchars($now->iso8601())."</dc:date>\n"; + $feed.= " <items>\n"; + $feed.= " <rdf:Seq>\n"; + for ($i=0;$i<count($this->items);$i++) { + $feed.= " <rdf:li rdf:resource=\"".htmlspecialchars($this->items[$i]->link)."\"/>\n"; + } + $feed.= " </rdf:Seq>\n"; + $feed.= " </items>\n"; + $feed.= " </channel>\n"; + if ($this->image!=null) { + $feed.= " <image rdf:about=\"".$this->image->url."\">\n"; + $feed.= " <title>".$this->image->title."</title>\n"; + $feed.= " <link>".$this->image->link."</link>\n"; + $feed.= " <url>".$this->image->url."</url>\n"; + $feed.= " </image>\n"; + } + $feed.= $this->_createAdditionalElements($this->additionalElements, " "); + + for ($i=0;$i<count($this->items);$i++) { + $feed.= " <item rdf:about=\"".htmlspecialchars($this->items[$i]->link)."\">\n"; + //$feed.= " <dc:type>Posting</dc:type>\n"; + $feed.= " <dc:format>text/html</dc:format>\n"; + if ($this->items[$i]->date!=null) { + $itemDate = new FeedDate($this->items[$i]->date); + $feed.= " <dc:date>".htmlspecialchars($itemDate->iso8601())."</dc:date>\n"; + } + if ($this->items[$i]->source!="") { + $feed.= " <dc:source>".htmlspecialchars($this->items[$i]->source)."</dc:source>\n"; + } + if ($this->items[$i]->author!="") { + $feed.= " <dc:creator>".htmlspecialchars($this->items[$i]->author)."</dc:creator>\n"; + } + $feed.= " <title>".htmlspecialchars(strip_tags(strtr($this->items[$i]->title,"\n\r"," ")))."</title>\n"; + $feed.= " <link>".htmlspecialchars($this->items[$i]->link)."</link>\n"; + $feed.= " <description>".htmlspecialchars($this->items[$i]->description)."</description>\n"; + $feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, " "); + $feed.= " </item>\n"; + } + $feed.= "</rdf:RDF>\n"; + return $feed; + } +} + + + +/** + * RSSCreator091 is a FeedCreator that implements RSS 0.91 Spec, revision 3. + * + * @see http://my.netscape.com/publish/formats/rss-spec-0.91.html + * @since 1.3 + * @author Kai Blankenhorn <kaib@bitfolge.de> + */ +class RSSCreator091 extends FeedCreator { + + /** + * Stores this RSS feed's version number. + * @access private + */ + var $RSSVersion; + + function RSSCreator091() { + $this->_setRSSVersion("0.91"); + $this->contentType = "application/rss+xml"; + } + + /** + * Sets this RSS feed's version number. + * @access private + */ + function _setRSSVersion($version) { + $this->RSSVersion = $version; + } + + /** + * Builds the RSS feed's text. The feed will be compliant to RDF Site Summary (RSS) 1.0. + * The feed will contain all items previously added in the same order. + * @return string the feed's complete text + */ + function createFeed() { + $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n"; + $feed.= $this->_createGeneratorComment(); + $feed.= $this->_createStylesheetReferences(); + $feed.= "<rss version=\"".$this->RSSVersion."\" xmlns:atom=\"http://www.w3.org/2005/Atom\">\n"; + $feed.= " <channel>\n"; + $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars($this->title),100)."</title>\n"; + $this->descriptionTruncSize = 500; + $feed.= " <description>".$this->getDescription()."</description>\n"; + $feed.= " <link>".$this->link."</link>\n"; + $feed.= " <atom:link href=\"".$this->syndicationURL."\" rel=\"self\" type=\"application/rss+xml\" />\n"; + $now = new FeedDate(); + $feed.= " <lastBuildDate>".htmlspecialchars($now->rfc822())."</lastBuildDate>\n"; + $feed.= " <generator>".FEEDCREATOR_VERSION."</generator>\n"; + + if ($this->image!=null) { + $feed.= " <image>\n"; + $feed.= " <url>".$this->image->url."</url>\n"; + $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars($this->image->title),100)."</title>\n"; + $feed.= " <link>".$this->image->link."</link>\n"; + if ($this->image->width!="") { + $feed.= " <width>".$this->image->width."</width>\n"; + } + if ($this->image->height!="") { + $feed.= " <height>".$this->image->height."</height>\n"; + } + if ($this->image->description!="") { + $feed.= " <description>".$this->image->getDescription()."</description>\n"; + } + $feed.= " </image>\n"; + } + if ($this->language!="") { + $feed.= " <language>".$this->language."</language>\n"; + } + if ($this->copyright!="") { + $feed.= " <copyright>".FeedCreator::iTrunc(htmlspecialchars($this->copyright),100)."</copyright>\n"; + } + if ($this->editor!="") { + $feed.= " <managingEditor>".FeedCreator::iTrunc(htmlspecialchars($this->editor),100)."</managingEditor>\n"; + } + if ($this->webmaster!="") { + $feed.= " <webMaster>".FeedCreator::iTrunc(htmlspecialchars($this->webmaster),100)."</webMaster>\n"; + } + if ($this->pubDate!="") { + $pubDate = new FeedDate($this->pubDate); + $feed.= " <pubDate>".htmlspecialchars($pubDate->rfc822())."</pubDate>\n"; + } + if ($this->category!="") { + $feed.= " <category>".htmlspecialchars($this->category)."</category>\n"; + } + if ($this->docs!="") { + $feed.= " <docs>".FeedCreator::iTrunc(htmlspecialchars($this->docs),500)."</docs>\n"; + } + if ($this->ttl!="") { + $feed.= " <ttl>".htmlspecialchars($this->ttl)."</ttl>\n"; + } + if ($this->rating!="") { + $feed.= " <rating>".FeedCreator::iTrunc(htmlspecialchars($this->rating),500)."</rating>\n"; + } + if ($this->skipHours!="") { + $feed.= " <skipHours>".htmlspecialchars($this->skipHours)."</skipHours>\n"; + } + if ($this->skipDays!="") { + $feed.= " <skipDays>".htmlspecialchars($this->skipDays)."</skipDays>\n"; + } + $feed.= $this->_createAdditionalElements($this->additionalElements, " "); + + for ($i=0;$i<count($this->items);$i++) { + $feed.= " <item>\n"; + $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100)."</title>\n"; + $feed.= " <link>".htmlspecialchars($this->items[$i]->link)."</link>\n"; + $feed.= " <description>".$this->items[$i]->getDescription()."</description>\n"; + + if ($this->items[$i]->author!="") { + $feed.= " <author>".htmlspecialchars($this->items[$i]->author)."</author>\n"; + } + /* + // on hold + if ($this->items[$i]->source!="") { + $feed.= " <source>".htmlspecialchars($this->items[$i]->source)."</source>\n"; + } + */ + if ($this->items[$i]->category!="") { + $feed.= " <category>".htmlspecialchars($this->items[$i]->category)."</category>\n"; + } + if ($this->items[$i]->comments!="") { + $feed.= " <comments>".htmlspecialchars($this->items[$i]->comments)."</comments>\n"; + } + if ($this->items[$i]->date!="") { + $itemDate = new FeedDate($this->items[$i]->date); + $feed.= " <pubDate>".htmlspecialchars($itemDate->rfc822())."</pubDate>\n"; + } + if ($this->items[$i]->guid!="") { + $feed.= " <guid>".htmlspecialchars($this->items[$i]->guid)."</guid>\n"; + } + $feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, " "); + $feed.= " </item>\n"; + } + $feed.= " </channel>\n"; + $feed.= "</rss>\n"; + return $feed; + } +} + + + +/** + * RSSCreator20 is a FeedCreator that implements RDF Site Summary (RSS) 2.0. + * + * @see http://backend.userland.com/rss + * @since 1.3 + * @author Kai Blankenhorn <kaib@bitfolge.de> + */ +class RSSCreator20 extends RSSCreator091 { + + function RSSCreator20() { + parent::_setRSSVersion("2.0"); + } + +} + + +/** + * PIECreator01 is a FeedCreator that implements the emerging PIE specification, + * as in http://intertwingly.net/wiki/pie/Syntax. + * + * @deprecated + * @since 1.3 + * @author Scott Reynen <scott@randomchaos.com> and Kai Blankenhorn <kaib@bitfolge.de> + */ +class PIECreator01 extends FeedCreator { + + function PIECreator01() { + $this->encoding = "utf-8"; + } + + function createFeed() { + $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n"; + $feed.= $this->_createStylesheetReferences(); + $feed.= "<feed version=\"0.1\" xmlns=\"http://example.com/newformat#\">\n"; + $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars($this->title),100)."</title>\n"; + $this->truncSize = 500; + $feed.= " <subtitle>".$this->getDescription()."</subtitle>\n"; + $feed.= " <link>".$this->link."</link>\n"; + for ($i=0;$i<count($this->items);$i++) { + $feed.= " <entry>\n"; + $feed.= " <title>".FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100)."</title>\n"; + $feed.= " <link>".htmlspecialchars($this->items[$i]->link)."</link>\n"; + $itemDate = new FeedDate($this->items[$i]->date); + $feed.= " <created>".htmlspecialchars($itemDate->iso8601())."</created>\n"; + $feed.= " <issued>".htmlspecialchars($itemDate->iso8601())."</issued>\n"; + $feed.= " <modified>".htmlspecialchars($itemDate->iso8601())."</modified>\n"; + $feed.= " <id>".htmlspecialchars($this->items[$i]->guid)."</id>\n"; + if ($this->items[$i]->author!="") { + $feed.= " <author>\n"; + $feed.= " <name>".htmlspecialchars($this->items[$i]->author)."</name>\n"; + if ($this->items[$i]->authorEmail!="") { + $feed.= " <email>".$this->items[$i]->authorEmail."</email>\n"; + } + $feed.=" </author>\n"; + } + $feed.= " <content type=\"text/html\" xml:lang=\"en-us\">\n"; + $feed.= " <div xmlns=\"http://www.w3.org/1999/xhtml\">".$this->items[$i]->getDescription()."</div>\n"; + $feed.= " </content>\n"; + $feed.= " </entry>\n"; + } + $feed.= "</feed>\n"; + return $feed; + } +} + + +/** + * AtomCreator03 is a FeedCreator that implements the atom specification, + * as in http://www.intertwingly.net/wiki/pie/FrontPage. + * Please note that just by using AtomCreator03 you won't automatically + * produce valid atom files. For example, you have to specify either an editor + * for the feed or an author for every single feed item. + * + * Some elements have not been implemented yet. These are (incomplete list): + * author URL, item author's email and URL, item contents, alternate links, + * other link content types than text/html. Some of them may be created with + * AtomCreator03::additionalElements. + * + * @see FeedCreator#additionalElements + * @since 1.6 + * @author Kai Blankenhorn <kaib@bitfolge.de>, Scott Reynen <scott@randomchaos.com> + */ +class AtomCreator03 extends FeedCreator { + + function AtomCreator03() { + $this->contentType = "application/atom+xml"; + $this->encoding = "utf-8"; + } + + function createFeed() { + $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n"; + $feed.= $this->_createGeneratorComment(); + $feed.= $this->_createStylesheetReferences(); + $feed.= "<feed version=\"0.3\" xmlns=\"http://purl.org/atom/ns#\""; + if ($this->language!="") { + $feed.= " xml:lang=\"".$this->language."\""; + } + $feed.= ">\n"; + $feed.= " <title>".htmlspecialchars($this->title)."</title>\n"; + $feed.= " <tagline>".htmlspecialchars($this->description)."</tagline>\n"; + $feed.= " <link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->link)."\"/>\n"; + $feed.= " <id>".htmlspecialchars($this->link)."</id>\n"; + $now = new FeedDate(); + $feed.= " <modified>".htmlspecialchars($now->iso8601())."</modified>\n"; + if ($this->editor!="") { + $feed.= " <author>\n"; + $feed.= " <name>".$this->editor."</name>\n"; + if ($this->editorEmail!="") { + $feed.= " <email>".$this->editorEmail."</email>\n"; + } + $feed.= " </author>\n"; + } + $feed.= " <generator>".FEEDCREATOR_VERSION."</generator>\n"; + $feed.= $this->_createAdditionalElements($this->additionalElements, " "); + for ($i=0;$i<count($this->items);$i++) { + $feed.= " <entry>\n"; + $feed.= " <title>".htmlspecialchars(strip_tags($this->items[$i]->title))."</title>\n"; + $feed.= " <link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->items[$i]->link)."\"/>\n"; + if ($this->items[$i]->date=="") { + $this->items[$i]->date = time(); + } + $itemDate = new FeedDate($this->items[$i]->date); + $feed.= " <created>".htmlspecialchars($itemDate->iso8601())."</created>\n"; + $feed.= " <issued>".htmlspecialchars($itemDate->iso8601())."</issued>\n"; + $feed.= " <modified>".htmlspecialchars($itemDate->iso8601())."</modified>\n"; + $feed.= " <id>".htmlspecialchars($this->items[$i]->link)."</id>\n"; + $feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, " "); + if ($this->items[$i]->author!="") { + $feed.= " <author>\n"; + $feed.= " <name>".htmlspecialchars($this->items[$i]->author)."</name>\n"; + $feed.= " </author>\n"; + } + if ($this->items[$i]->description!="") { + $feed.= " <summary>".htmlspecialchars($this->items[$i]->description)."</summary>\n"; + } + $feed.= " </entry>\n"; + } + $feed.= "</feed>\n"; + return $feed; + } +} + + +/** + * MBOXCreator is a FeedCreator that implements the mbox format + * as described in http://www.qmail.org/man/man5/mbox.html + * + * @since 1.3 + * @author Kai Blankenhorn <kaib@bitfolge.de> + */ +class MBOXCreator extends FeedCreator { + + function MBOXCreator() { + $this->contentType = "text/plain"; + $this->encoding = "ISO-8859-15"; + } + + function qp_enc($input = "", $line_max = 76) { + $hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'); + $lines = preg_split("/(?:\r\n|\r|\n)/", $input); + $eol = "\r\n"; + $escape = "="; + $output = ""; + while( list(, $line) = each($lines) ) { + //$line = rtrim($line); // remove trailing white space -> no =20\r\n necessary + $linlen = strlen($line); + $newline = ""; + for($i = 0; $i < $linlen; $i++) { + $c = substr($line, $i, 1); + $dec = ord($c); + if ( ($dec == 32) && ($i == ($linlen - 1)) ) { // convert space at eol only + $c = "=20"; + } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) { // always encode "\t", which is *not* required + $h2 = floor($dec/16); $h1 = floor($dec%16); + $c = $escape.$hex["$h2"].$hex["$h1"]; + } + if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted + $output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay + $newline = ""; + } + $newline .= $c; + } // end of for + $output .= $newline.$eol; + } + return trim($output); + } + + + /** + * Builds the MBOX contents. + * @return string the feed's complete text + */ + function createFeed() { + for ($i=0;$i<count($this->items);$i++) { + if ($this->items[$i]->author!="") { + $from = $this->items[$i]->author; + } else { + $from = $this->title; + } + $itemDate = new FeedDate($this->items[$i]->date); + $feed.= "From ".strtr(MBOXCreator::qp_enc($from)," ","_")." ".date("D M d H:i:s Y",$itemDate->unix())."\n"; + $feed.= "Content-Type: text/plain;\n"; + $feed.= " charset=\"".$this->encoding."\"\n"; + $feed.= "Content-Transfer-Encoding: quoted-printable\n"; + $feed.= "Content-Type: text/plain\n"; + $feed.= "From: \"".MBOXCreator::qp_enc($from)."\"\n"; + $feed.= "Date: ".$itemDate->rfc822()."\n"; + $feed.= "Subject: ".MBOXCreator::qp_enc(FeedCreator::iTrunc($this->items[$i]->title,100))."\n"; + $feed.= "\n"; + $body = chunk_split(MBOXCreator::qp_enc($this->items[$i]->description)); + $feed.= preg_replace("~\nFrom ([^\n]*)(\n?)~","\n>From $1$2\n",$body); + $feed.= "\n"; + $feed.= "\n"; + } + return $feed; + } + + /** + * Generate a filename for the feed cache file. Overridden from FeedCreator to prevent XML data types. + * @return string the feed cache filename + * @since 1.4 + * @access private + */ + function _generateFilename() { + $fileInfo = pathinfo($_SERVER["PHP_SELF"]); + return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".mbox"; + } +} + + +/** + * OPMLCreator is a FeedCreator that implements OPML 1.0. + * + * @see http://opml.scripting.com/spec + * @author Dirk Clemens, Kai Blankenhorn + * @since 1.5 + */ +class OPMLCreator extends FeedCreator { + + function OPMLCreator() { + $this->encoding = "utf-8"; + } + + function createFeed() { + $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n"; + $feed.= $this->_createGeneratorComment(); + $feed.= $this->_createStylesheetReferences(); + $feed.= "<opml xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">\n"; + $feed.= " <head>\n"; + $feed.= " <title>".htmlspecialchars($this->title)."</title>\n"; + if ($this->pubDate!="") { + $date = new FeedDate($this->pubDate); + $feed.= " <dateCreated>".$date->rfc822()."</dateCreated>\n"; + } + if ($this->lastBuildDate!="") { + $date = new FeedDate($this->lastBuildDate); + $feed.= " <dateModified>".$date->rfc822()."</dateModified>\n"; + } + if ($this->editor!="") { + $feed.= " <ownerName>".$this->editor."</ownerName>\n"; + } + if ($this->editorEmail!="") { + $feed.= " <ownerEmail>".$this->editorEmail."</ownerEmail>\n"; + } + $feed.= " </head>\n"; + $feed.= " <body>\n"; + for ($i=0;$i<count($this->items);$i++) { + $feed.= " <outline type=\"rss\" "; + $title = htmlspecialchars(strip_tags(strtr($this->items[$i]->title,"\n\r"," "))); + $feed.= " title=\"".$title."\""; + $feed.= " text=\"".$title."\""; + //$feed.= " description=\"".htmlspecialchars($this->items[$i]->description)."\""; + $feed.= " url=\"".htmlspecialchars($this->items[$i]->link)."\""; + $feed.= "/>\n"; + } + $feed.= " </body>\n"; + $feed.= "</opml>\n"; + return $feed; + } +} + + + +/** + * HTMLCreator is a FeedCreator that writes an HTML feed file to a specific + * location, overriding the createFeed method of the parent FeedCreator. + * The HTML produced can be included over http by scripting languages, or serve + * as the source for an IFrame. + * All output by this class is embedded in <div></div> tags to enable formatting + * using CSS. + * + * @author Pascal Van Hecke + * @since 1.7 + */ +class HTMLCreator extends FeedCreator { + + var $contentType = "text/html"; + + /** + * Contains HTML to be output at the start of the feed's html representation. + */ + var $header; + + /** + * Contains HTML to be output at the end of the feed's html representation. + */ + var $footer ; + + /** + * Contains HTML to be output between entries. A separator is only used in + * case of multiple entries. + */ + var $separator; + + /** + * Used to prefix the stylenames to make sure they are unique + * and do not clash with stylenames on the users' page. + */ + var $stylePrefix; + + /** + * Determines whether the links open in a new window or not. + */ + var $openInNewWindow = true; + + var $imageAlign ="right"; + + /** + * In case of very simple output you may want to get rid of the style tags, + * hence this variable. There's no equivalent on item level, but of course you can + * add strings to it while iterating over the items ($this->stylelessOutput .= ...) + * and when it is non-empty, ONLY the styleless output is printed, the rest is ignored + * in the function createFeed(). + */ + var $stylelessOutput =""; + + /** + * Writes the HTML. + * @return string the scripts's complete text + */ + function createFeed() { + // if there is styleless output, use the content of this variable and ignore the rest + if ($this->stylelessOutput!="") { + return $this->stylelessOutput; + } + + //if no stylePrefix is set, generate it yourself depending on the script name + if ($this->stylePrefix=="") { + $this->stylePrefix = str_replace(".", "_", $this->_generateFilename())."_"; + } + + //set an openInNewWindow_token_to be inserted or not + if ($this->openInNewWindow) { + $targetInsert = " target='_blank'"; + } + + // use this array to put the lines in and implode later with "document.write" javascript + $feedArray = array(); + if ($this->image!=null) { + $imageStr = "<a href='".$this->image->link."'".$targetInsert.">". + "<img src='".$this->image->url."' border='0' alt='". + FeedCreator::iTrunc(htmlspecialchars($this->image->title),100). + "' align='".$this->imageAlign."' "; + if ($this->image->width) { + $imageStr .=" width='".$this->image->width. "' "; + } + if ($this->image->height) { + $imageStr .=" height='".$this->image->height."' "; + } + $imageStr .="/></a>"; + $feedArray[] = $imageStr; + } + + if ($this->title) { + $feedArray[] = "<div class='".$this->stylePrefix."title'><a href='".$this->link."' ".$targetInsert." class='".$this->stylePrefix."title'>". + FeedCreator::iTrunc(htmlspecialchars($this->title),100)."</a></div>"; + } + if ($this->getDescription()) { + $feedArray[] = "<div class='".$this->stylePrefix."description'>". + str_replace("]]>", "", str_replace("<![CDATA[", "", $this->getDescription())). + "</div>"; + } + + if ($this->header) { + $feedArray[] = "<div class='".$this->stylePrefix."header'>".$this->header."</div>"; + } + + for ($i=0;$i<count($this->items);$i++) { + if ($this->separator and $i > 0) { + $feedArray[] = "<div class='".$this->stylePrefix."separator'>".$this->separator."</div>"; + } + + if ($this->items[$i]->title) { + if ($this->items[$i]->link) { + $feedArray[] = + "<div class='".$this->stylePrefix."item_title'><a href='".$this->items[$i]->link."' class='".$this->stylePrefix. + "item_title'".$targetInsert.">".FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100). + "</a></div>"; + } else { + $feedArray[] = + "<div class='".$this->stylePrefix."item_title'>". + FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100). + "</div>"; + } + } + if ($this->items[$i]->getDescription()) { + $feedArray[] = + "<div class='".$this->stylePrefix."item_description'>". + str_replace("]]>", "", str_replace("<![CDATA[", "", $this->items[$i]->getDescription())). + "</div>"; + } + } + if ($this->footer) { + $feedArray[] = "<div class='".$this->stylePrefix."footer'>".$this->footer."</div>"; + } + + $feed= "".join($feedArray, "\r\n"); + return $feed; + } + + /** + * Overrrides parent to produce .html extensions + * + * @return string the feed cache filename + * @since 1.4 + * @access private + */ + function _generateFilename() { + $fileInfo = pathinfo($_SERVER["PHP_SELF"]); + return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".html"; + } +} + + +/** + * JSCreator is a class that writes a js file to a specific + * location, overriding the createFeed method of the parent HTMLCreator. + * + * @author Pascal Van Hecke + */ +class JSCreator extends HTMLCreator { + var $contentType = "text/javascript"; + + /** + * writes the javascript + * @return string the scripts's complete text + */ + function createFeed() + { + $feed = parent::createFeed(); + $feedArray = explode("\n",$feed); + + $jsFeed = ""; + foreach ($feedArray as $value) { + $jsFeed .= "document.write('".trim(addslashes($value))."');\n"; + } + return $jsFeed; + } + + /** + * Overrrides parent to produce .js extensions + * + * @return string the feed cache filename + * @since 1.4 + * @access private + */ + function _generateFilename() { + $fileInfo = pathinfo($_SERVER["PHP_SELF"]); + return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".js"; + } + +} + + + +/*** TEST SCRIPT ********************************************************* + +//include("feedcreator.class.php"); + +$rss = new UniversalFeedCreator(); +$rss->useCached(); +$rss->title = "PHP news"; +$rss->description = "daily news from the PHP scripting world"; + +//optional +//$rss->descriptionTruncSize = 500; +//$rss->descriptionHtmlSyndicated = true; +//$rss->xslStyleSheet = "http://feedster.com/rss20.xsl"; + +$rss->link = "http://www.dailyphp.net/news"; +$rss->feedURL = "http://www.dailyphp.net/".$PHP_SELF; + +$image = new FeedImage(); +$image->title = "dailyphp.net logo"; +$image->url = "http://www.dailyphp.net/images/logo.gif"; +$image->link = "http://www.dailyphp.net"; +$image->description = "Feed provided by dailyphp.net. Click to visit."; + +//optional +$image->descriptionTruncSize = 500; +$image->descriptionHtmlSyndicated = true; + +$rss->image = $image; + +// get your news items from somewhere, e.g. your database: +//mysql_select_db($dbHost, $dbUser, $dbPass); +//$res = mysql_query("SELECT * FROM news ORDER BY newsdate DESC"); +//while ($data = mysql_fetch_object($res)) { + $item = new FeedItem(); + $item->title = "This is an the test title of an item"; + $item->link = "http://localhost/item/"; + $item->description = "<b>description in </b><br/>HTML"; + + //optional + //item->descriptionTruncSize = 500; + $item->descriptionHtmlSyndicated = true; + + $item->date = time(); + $item->source = "http://www.dailyphp.net"; + $item->author = "John Doe"; + + $rss->addItem($item); +//} + +// valid format strings are: RSS0.91, RSS1.0, RSS2.0, PIE0.1, MBOX, OPML, ATOM0.3, HTML, JS +echo $rss->saveFeed("RSS0.91", "feed.xml"); + + + +***************************************************************************/ + +?> |