function reverse_tinyurl($url){
            // Resolves a TinyURL.com encoded url to it's source.
            $url = explode('.com/', $url);
            $url = 'http://preview.tinyurl.com/'.$url[1];
            $preview = file_get_contents($url);
            preg_match('/redirecturl" href="(.*)">/', $preview, $matches);
            return $matches[1];
        }
        
        function tinyurl($url){
        // Shortens a url
            $html = file_get_contents("http://tinyurl.com/create.php?url=".$url);
            preg_match('/http:\/\/preview\.tinyurl\.com\/(.*)<\/b>/', $html, $matches);
            return "http://tinyurl.com/".$matches[1];
        } 

function reverse_tinyurl($url){
	$url = explode('.com/', $url);
	$url = 'http://preview.tinyurl.com/'.$url[1];
	$preview = file_get_contents($url);
	preg_match('/redirecturl" href="(.*)">/', $preview, $matches);
	return $matches[1];
}

function makeLinks($sourceText) {
  $destText = preg_replace( "/([_a-zA-Z0-9-]+)(\.[_a-zA-Z0-9-]+)*@([a-zA-Z0-9-]+)(\.[a-zA-Z0-9-]+)*(\.[a-zA-Z]{2,4})/", '<a href="mailto:\\0">\\0</a>',$sourceText);
  $destText = preg_replace_callback('/\bhttp[^\s]+/',create_function('$matches', 'return "<a href=\"$matches[0]\">" . preg_replace("#(\.|/)#", "&shy;$1", $matches[0]) . "</a>";'),$destText);
  return $destText;
}

# allow neat perma urls
map.connect 'articles/:year/:month/:day', :controller  => 'articles', 
     :action => 'find_by_date', 
     :year => /\d{4}/, :day => nil, :month => nil
map.connect 'articles/:year/:month/:day/:title', :controller  => 'articles', 
     :action => 'permalink', :year => /\d{4}/