WP Bookmarks

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<?php
/**
 * Bookmark Template Functions for usage in Themes
 *
 * @package WordPress
 * @subpackage Template
 */

/**
 * The formatted output of a list of bookmarks.
 *
 * The $bookmarks array must contain bookmark objects and will be iterated over
 * to retrieve the bookmark to be used in the output.
 *
 * The output is formatted as HTML with no way to change that format. However,
 * what is between, before, and after can be changed. The link itself will be
 * HTML.
 *
 * This function is used internally by wp_list_bookmarks() and should not be
 * used by themes.
 *
 * The defaults for overwriting are:
 * 'show_updated' - Default is 0 (integer). Will show the time of when the
 *		bookmark was last updated.
 * 'show_description' - Default is 0 (integer). Whether to show the description
 *		of the bookmark.
 * 'show_images' - Default is 1 (integer). Whether to show link image if
 *		available.
 * 'show_name' - Default is 0 (integer). Whether to show link name if
 *		available.
 * 'before' - Default is '<li>' (string). The html or text to prepend to each
 *		bookmarks.
 * 'after' - Default is '</li>' (string). The html or text to append to each
 *		bookmarks.
 * 'link_before' - Default is '' (string). The html or text to prepend to each
 *		bookmarks inside the <a> tag.
 * 'link_after' - Default is '' (string). The html or text to append to each
 *		bookmarks inside the <a> tag.
 * 'between' - Default is '\n' (string). The string for use in between the link,
 *		description, and image.
 * 'show_rating' - Default is 0 (integer). Whether to show the link rating.
 *
 * @since 2.1.0
 * @access private
 * @usedby wp_list_bookmarks()
 *
 * @param array $bookmarks List of bookmarks to traverse
 * @param string|array $args Optional. Overwrite the defaults.
 * @return string Formatted output in HTML
 */
function _walk_bookmarks($bookmarks, $args = '' ) {
	$defaults = array(
		'show_updated' => 0, 'show_description' => 0,
		'show_images' => 1, 'show_name' => 0,
		'before' => '<li>', 'after' => '</li>', 'between' => "\n",
		'show_rating' => 0, 'link_before' => '', 'link_after' => ''
	);

	$r = wp_parse_args( $args, $defaults );
	extract( $r, EXTR_SKIP );

	$output = ''; // Blank string to start with.

	foreach ( (array) $bookmarks as $bookmark ) {
		if ( !isset($bookmark->recently_updated) )
			$bookmark->recently_updated = false;
		$output .= $before;
		if ( $show_updated && $bookmark->recently_updated )
			$output .= get_option('links_recently_updated_prepend');

		$the_link = '#';
		if ( !empty($bookmark->link_url) )
			$the_link = esc_url($bookmark->link_url);

		$desc = esc_attr(sanitize_bookmark_field('link_description', $bookmark->link_description, $bookmark->link_id, 'display'));
		$name = esc_attr(sanitize_bookmark_field('link_name', $bookmark->link_name, $bookmark->link_id, 'display'));
 		$title = $desc;

		if ( $show_updated )
			if ( '00' != substr($bookmark->link_updated_f, 0, 2) ) {
				$title .= ' (';
				$title .= sprintf(__('Last updated: %s'), date(get_option('links_updated_date_format'), $bookmark->link_updated_f + (get_option('gmt_offset') * 3600)));
				$title .= ')';
			}

		$alt = ' alt="' . $name . ( $show_description ? ' ' . $title : '' ) . '"';

		if ( '' != $title )
			$title = ' title="' . $title . '"';

		$rel = $bookmark->link_rel;
		if ( '' != $rel )
			$rel = ' rel="' . esc_attr($rel) . '"';

		$target = $bookmark->link_target;
		if ( '' != $target )
			$target = ' target="' . $target . '"';

		$output .= '<a href="' . $the_link . '"' . $rel . $title . $target . '>';

		$output .= $link_before;

		if ( $bookmark->link_image != null && $show_images ) {
			if ( strpos($bookmark->link_image, 'http') === 0 )
				$output .= "<img src=\"$bookmark->link_image\" $alt $title />";
			else // If it's a relative path
				$output .= "<img src=\"" . get_option('siteurl') . "$bookmark->link_image\" $alt $title />";

			if ( $show_name )
				$output .= " $name";
		} else {
			$output .= $name;
		}

		$output .= $link_after;

		$output .= '</a>';

		if ( $show_updated && $bookmark->recently_updated )
			$output .= get_option('links_recently_updated_append');

		if ( $show_description && '' != $desc )
			$output .= $between . $desc;

		if ( $show_rating )
			$output .= $between . sanitize_bookmark_field('link_rating', $bookmark->link_rating, $bookmark->link_id, 'display');

		$output .= "$after\n";
	} // end while

	return $output;
}