feed-pseudo-widget.php

<?php
/*
Plugin Name: feed-pseudo-widget
Plugin URI: http://wordpress.org/#
Description: feed-pseudo-widget
Author: Matt Martz
Version: 1.0
Author URI: http://sivel.net/
*/

function feed_pseudo_widget($atts, $content) {
	extract(shortcode_atts(array(
		'url' => false,
		'count' => 10,
		'title' => true,
		'title_before' => '<h3>',
		'title_after' => '</h3>',
		'before' => '<ol>',
		'after' => '</ol>',
		'link_before' => '<li>',
		'link_after' => '</li>',
		'cache' => false,
		'timeout' => 3600,
		'description' => false,
		'content' => false,
		'meta' => false,
		'date_format' => 'd M Y H:i:s',
		'width' => null,
		'height' => null,
		'float' => 'none'
	), $atts));

	$arrURL = parse_url($url);
	if ( $url == false || $arrURL == false ) {
		return "<p>Malformed or no feed URL provided.</p>";
	}

	$boolvals = array('title', 'cache', 'description', 'content', 'meta');
	foreach ( $boolvals as $boolval ) {
		if ( $$boolval == "true" )
			$$boolval = true;
		else
			$$boolval = false;
	}

	$strintvals = array(
		array('attr' => 'count',	'default' => 10,	    'type' => 'int'),
		array('attr' => 'title_before', 'default' => '<h3>',	    'type' => 'string'),
		array('attr' => 'title_after',	'default' => '</h3>',	    'type' => 'string'),
		array('attr' => 'before',	'default' => '<ol>',	    'type' => 'string'),
		array('attr' => 'after',	'default' => '</ol>',	    'type' => 'string'),
		array('attr' => 'link_before',	'default' => '<li>',	    'type' => 'string'),
		array('attr' => 'link_after',	'default' => '</li>',	    'type' => 'string'),
		array('attr' => 'timeout',	'default' => 3600,	    'type' => 'int'),
		array('attr' => 'date_format',	'default' => 'd M Y H:i:s', 'type' => 'string'),
		array('attr' => 'height',       'default' => null,          'type' => 'string'),
		array('attr' => 'width',        'default' => null,          'type' => 'string'),
		array('attr' => 'float',	'default' => 'none',        'type' => 'string')
	);
	foreach ( $strintvals as $strintval ) {
		if ( $strintval['type'] == 'int' )
			$$strintval['attr'] = (int) $$strintval['attr'];

		if ( $strintval['type'] == 'string' )
			$$strintval['attr'] = (string) $$strintval['attr'];

		if ( ( $strintval['type'] == 'int' && !is_int($$strintval['attr']) ) || ( $strintval['type'] == 'string' && !is_string($$strintval['attr']) ) || $$strintval['attr'] === 0 )
			$$strintval['attr'] = $strintval['default'];
	}

	if ( !class_exists('SimplePie') )
		include('simplepie.inc');

	$feed = new SimplePie();
	$feed->set_feed_url(array($url));

	if ( $cache == true && ( !is_dir(WP_CONTENT_DIR . '/rss_cache') || !is_writable(WP_CONTENT_DIR . '/rss_cache') ) )
		$cache = false;

	$feed->set_cache_location(WP_CONTENT_DIR . '/rss_cache');
	$feed->set_cache_duration($timeout);
	$feed->set_timeout(5);
	$feed->enable_cache($cache);
	$feed->strip_htmltags(array('script'));
	$feed->set_item_limit($count);
	$feed->init();
	$feed->handle_content_type();

	$items = $feed->get_items();
	if ( !isset($items[0]) )
		return "<p>Feed could not be retrieved.</p>\n";

	unset($feed);

	$output = "<div class='feed-pseudo-widget'";
	if ( !empty($height) || !empty($width) || !empty($float) ) {
		$output .= " style='";
		if ( !empty($height) )
			$output .= "height:$height;";
		if ( !empty($width) )
			$output .= "width:$width;";
		if ( !empty($float) )
			$output .= "float:$float;";
		$output .= "'";
	}
	$output .= ">\n";

	if ( $title == true )
		$output .= "$title_before<a href='{$items[0]->get_feed()->get_permalink()}' title='{$items[0]->get_feed()->get_title()}'>{$items[0]->get_feed()->get_title()}</a>$title_after\n";

	$output .= $before;

	foreach ( $items as $item ) {
		$output .= $link_before . "\n";
		$output .= "<a href='{$item->get_permalink()}' title='{$item->get_title()}'>{$item->get_title()}</a>\n";

		if ( $meta == true )
			$output .= "<span class='feed-pseudo-widget-meta'>-by {$item->get_author()->get_name()} on {$item->get_date($date_format)} GMT</span>\n";

		if ( $content == true )
			$output .= "<div class='feed-pseudo-widget-content'>{$item->get_content()}</div>\n";

		if ( $description == true && $content != true )
			$output .= "<div class='feed-pseudo-widget-description'>{$item->get_description()}</div>\n";

		$output .= $link_after. "\n";
	}

	$output .= $after;

	$output .= "</div>\n";
	return $output;
}

add_shortcode('feed', 'feed_pseudo_widget');

add_action('wp_head', 'feed_pseudo_widget_css');
function feed_pseudo_widget_css() {
?>
<style type="text/css">
	.feed-pseudo-widget {
		border: 3px solid lightgrey;
		-moz-border-radius: 10px;
		-khtml-border-radius: 10px;
		-webkit-border-radius: 10px;
		padding: 0 10px 0 10px;
		margin: 10px 0 10px 0;
	}
	.feed-pseudo-widget h3 {
		border-bottom: 1px solid lightgrey;
	}
	.feed-pseudo-widget-meta {
		font-size: 85%;
	}
</style>
<?php
}
?>