// 2011.07.11: [get_post_link query="ID (tag_id) " target="_blank" plink="link name within page" title="instead of title name" ] 
// Wordpressの投稿・固定ページへのリンクを張る
// Autolink for Post and Pages in Wordpress
// 2011.07.13: If the status of the page or post is not "publish", the link information will be removed (Only title name).
// 2011.08.03: 1.1: added new attribute of link in page. (ex. plink="example" --> hogehoge#example)

// Parse parameters
extract(shortcode_atts(array('query' => '', 'target'=> '', 'plink' => '', 'title'=>''), $atts));
$query = attribute_escape(strip_tags(html_entity_decode($query,ENT_QUOTES)));
$target = attribute_escape(strip_tags(html_entity_decode($target,ENT_QUOTES)));
$plink = attribute_escape(strip_tags(html_entity_decode($plink,ENT_QUOTES)));
$title = attribute_escape(strip_tags(html_entity_decode($title,ENT_QUOTES)));

if (empty($query)) return '';
 
$c_post = get_post($query);

// 2011.07.13: Fixed in case of empty post.
if( $c_post ){
  if( $c_post->post_status != "publish")
    echo attribute_escape($c_post->post_title);
  else{
    echo '<a href="';
    echo clean_url(get_permalink($c_post->ID));
    // 2011.08.03
    if(!empty($plink)) 
    	echo '#' . $plink;
    echo '"';
    if(!empty($target))
      echo ' target ="' . $target . '"';
    echo '>';
    // 2011.08.03
    if(!empty($title))
      echo $title;
    else
      echo attribute_escape($c_post->post_title);
    echo '</a>';
  } 
}