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Found 1 result

  1. Uncommon Use of Standard Operators

    I recently downloaded the following PHP include and discovered an entire method of coding that I do not understand. Could someone please explain the use of the following, for me non-standard, characters in this document: - + @@ ... @@ Is this a way of designating the codes of different versions within the same script? Is it functional or is it comment? How does it work? --- feedcreator.class.php Mon Oct 11 20:12:36 2004 +++ feedcreator-ppt.class.php Mon Nov 21 18:58:50 2005 @@ -1,12 +1,14 @@ <?php /*************************************************************************** -FeedCreator class v1.7.2 +FeedCreator class v1.7.2-ppt 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 +v1.7.2-mod on-the-fly feed generation by Fabian Wolf (info@f2w.de) +v1.7.2-ppt ATOM 1.0 support by Mohammad Hafiz bin Ismail (mypapit@gmail.com) This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -27,6 +29,14 @@ Changelog: +v1.7.2-ppt 11-21-05 + added Atom 1.0 support + added enclosure support for RSS 2.0/ATOM 1.0 + added docs for v1.7.2-ppt only! + +v1.7.2-mod 03-12-05 + added output function outputFeed for on-the-fly feed generation + v1.7.2 10-11-04 license changed to LGPL @@ -138,6 +148,14 @@ //optional item->descriptionTruncSize = 500; item->descriptionHtmlSyndicated = true; + + //optional (enclosure) + $item->enclosure = new EnclosureItem(); + $item->enclosure->url='http://http://www.dailyphp.net/media/voice.mp3'; + $item->enclosure->length="950230"; + $item->enclosure->type='audio/x-mpeg' + + $item->date = $data->newsdate; $item->source = "http://www.dailyphp.net"; @@ -147,9 +165,12 @@ } // valid format strings are: RSS0.91, RSS1.0, RSS2.0, PIE0.1 (deprecated), -// MBOX, OPML, ATOM, ATOM0.3, HTML, JS +// MBOX, OPML, ATOM, ATOM10, ATOM0.3, HTML, JS echo $rss->saveFeed("RSS1.0", "news/feed.xml"); +//to generate "on-the-fly" +$rss->outputFeed("RSS1.0"); + *************************************************************************** * A little setup * @@ -164,7 +185,8 @@ /** * Version string. **/ -define("FEEDCREATOR_VERSION", "FeedCreator 1.7.2"); + +define("FEEDCREATOR_VERSION", "FeedCreator 1.7.2-ppt (info@mypapit.net)"); @@ -201,6 +223,17 @@ var $date; /** + * Add <enclosure> element tag RSS 2.0 + * modified by : Mohammad Hafiz bin Ismail (mypapit@gmail.com) + * + * + * display : + * <enclosure length="17691" url="http://something.com/picture.jpg" type="image/jpeg" /> + * + */ + var $enclosure; + + /** * 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> @@ -214,6 +247,26 @@ // var $source; } +class EnclosureItem extends HtmlDescribable { + /* + * + * core variables + * + **/ + var $url,$length,$type; + + /* + * For use with another extension like Yahoo mRSS + * Warning : + * These variables might not show up in + * later release / not finalize yet! + * + */ + var $width, $height, $title, $description, $keywords, $thumburl; + + var $additionalElements = Array(); + +} /** @@ -265,6 +318,7 @@ } + /** * An FeedHtmlField describes and generates * a feed, item or image html field (probably a description). Output is @@ -333,6 +387,63 @@ class UniversalFeedCreator extends FeedCreator { var $_feed; + function _setMIME($format) { + switch (strtoupper($format)) { + + case "2.0": + // fall through + case "RSS2.0": + header('Content-type: text/xml', true); + break; + + case "1.0": + // fall through + case "RSS1.0": + header('Content-type: text/xml', true); + break; + + case "PIE0.1": + header('Content-type: text/xml', true); + break; + + case "MBOX": + header('Content-type: text/plain', true); + break; + + case "OPML": + header('Content-type: text/xml', true); + break; + + case "ATOM": + // fall through: always the latest ATOM version + case "ATOM1.0": + header('Content-type: application/xml', true); + break; + + case "ATOM0.3": + header('Content-type: application/xml', true); + break; + + + case "HTML": + header('Content-type: text/html', true); + break; + + case "JS": + // fall through + case "JAVASCRIPT": + header('Content-type: text/javascript', true); + break; + + default: + case "0.91": + // fall through + case "RSS0.91": + header('Content-type: text/xml', true); + break; + } + } + function _setFormat($format) { switch (strtoupper($format)) { @@ -368,11 +479,15 @@ case "ATOM": // fall through: always the latest ATOM version + case "ATOM1.0": + $this->_feed = new AtomCreator10(); + break; + case "ATOM0.3": $this->_feed = new AtomCreator03(); break; - + case "HTML": $this->_feed = new HTMLCreator(); break; @@ -445,6 +560,20 @@ $this->_feed->useCached($filename, $timeout); } + + /** + * Outputs feed to the browser - needed for on-the-fly feed generation (like it is done in WordPress, etc.) + * + * @param format string format the feed should comply to. Valid values are: + * "PIE0.1" (deprecated), "mbox", "RSS0.91", "RSS1.0", "RSS2.0", "OPML", "ATOM0.3". + */ + function outputFeed($format='RSS0.91') { + $this->_setFormat($format); + $this->_setMIME($format); + $this->_feed->outputFeed(); + } + + } @@ -692,6 +821,17 @@ echo "<br /><b>Error creating feed file, please check write permissions.</b><br />"; } } + + /** + * Outputs this feed directly to the browser - for on-the-fly feed generation + * @since 1.7.2-mod + * + * still missing: proper header output - currently you have to add it manually + */ + function outputFeed() { + echo $this->createFeed(); + } + } @@ -711,7 +851,7 @@ function FeedDate($dateString="") { if ($dateString=="") $dateString = date("r"); - if (is_integer($dateString)) { + if (is_numeric($dateString)) { $this->unix = $dateString; return; } @@ -770,7 +910,7 @@ /** * Gets the date stored in this FeedDate as an ISO 8601 date. * - * @return a date in ISO 8601 format + * @return a date in ISO 8601 (RFC 3339) format */ function iso8601() { $date = gmdate("Y-m-d\TH:i:sO",$this->unix); @@ -779,6 +919,7 @@ return $date; } + /** * Gets the date stored in this FeedDate as unix time stamp. * @@ -997,8 +1138,23 @@ $feed.= " <guid>".htmlspecialchars($this->items[$i]->guid)."</guid>\n"; } $feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, " "); + + if ($this->RSSVersion == "2.0" && $this->items[$i]->enclosure != NULL) + { + $feed.= " <enclosure url=\""; + $feed.= $this->items[$i]->enclosure->url; + $feed.= "\" length=\""; + $feed.= $this->items[$i]->enclosure->length; + $feed.= "\" type=\""; + $feed.= $this->items[$i]->enclosure->type; + $feed.= "\"/>\n"; + } + + + $feed.= " </item>\n"; } + $feed.= " </channel>\n"; $feed.= "</rss>\n"; return $feed; @@ -1072,7 +1228,88 @@ } } +/** + * AtomCreator10 is a FeedCreator that implements the atom specification, + * as in http://www.atomenabled.org/developers/syndication/atom-format-spec.php + * Please note that just by using AtomCreator10 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 + * AtomCreator10::additionalElements. + * + * @see FeedCreator#additionalElements + * @since 1.7.2-mod (modified) + * @author Mohammad Hafiz Ismail (mypapit@gmail.com) + */ + class AtomCreator10 extends FeedCreator { + + function AtomCreator10() { + $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(); + $feed.= "<feed xmlns=\"http://www.w3.org/2005/Atom\""; + if ($this->language!="") { + $feed.= " xml:lang=\"".$this->language."\""; + } + $feed.= ">\n"; + $feed.= " <title>".htmlspecialchars($this->title)."</title>\n"; + $feed.= " <subtitle>".htmlspecialchars($this->description)."</subtitle>\n"; + $feed.= " <link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->link)."\"/>\n"; + $feed.= " <id>".htmlspecialchars($this->link)."</id>\n"; + $now = new FeedDate(); + $feed.= " <updated>".htmlspecialchars($now->iso8601())."</updated>\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.= "<link rel=\"self\" type=\"application/atom+xml\" href=\"". $this->syndicationURL . "\" />\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); + $feed.= " <published>".htmlspecialchars($itemDate->iso8601())."</published>\n"; + $feed.= " <updated>".htmlspecialchars($itemDate->iso8601())."</updated>\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[$i]->description)."</summary>\n"; + } + if ($this->items[$i]->enclosure != NULL) { + $feed.=" <link rel=\"enclosure\" href=\"". $this->items[$i]->enclosure->url ."\" type=\"". $this->items[$i]->enclosure->type."\" length=\"". $this->items[$i]->enclosure->length . "\" />\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.
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