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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Superclass for plugins that do URL shortening
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package StatusNet
* @author Craig Andrews <candrews@integralblue.com>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
/**
* Superclass for plugins that do URL shortening
*
* @category Plugin
* @package StatusNet
* @author Craig Andrews <candrews@integralblue.com>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
abstract class UrlShortenerPlugin extends Plugin
{
public $shortenerName;
public $freeService=false;
//------------Url Shortener plugin should implement some (or all) of these methods------------\\
/**
* Short a URL
* @param url
* @return string shortened version of the url, or null if URL shortening failed
*/
protected abstract function shorten($url);
//------------These methods may help you implement your plugin------------\\
protected function http_get($url)
{
$request = HTTPClient::start();
$response = $request->get($url);
return $response->getBody();
}
protected function http_post($url,$data)
{
$request = HTTPClient::start();
$response = $request->post($url, null, $data);
return $response->getBody();
}
protected function tidy($response) {
$response = str_replace(' ', ' ', $response);
$config = array('output-xhtml' => true);
$tidy = new tidy;
$tidy->parseString($response, $config, 'utf8');
$tidy->cleanRepair();
return (string)$tidy;
}
//------------Below are the methods that connect StatusNet to the implementing Url Shortener plugin------------\\
function onInitializePlugin(){
if(!isset($this->shortenerName)){
throw new Exception("must specify a shortenerName");
}
}
function onGetUrlShorteners(&$shorteners)
{
$shorteners[$this->shortenerName]=array('freeService'=>$this->freeService);
}
function onStartShortenUrl($url,$shortenerName,&$shortenedUrl)
{
if($shortenerName == $this->shortenerName && strlen($url) >= common_config('site', 'shorturllength')){
$result = $this->shorten($url);
if(isset($result) && $result != null && $result !== false){
$shortenedUrl=$result;
common_log(LOG_INFO, __CLASS__ . ": $this->shortenerName shortened $url to $shortenedUrl");
return false;
}
}
}
}
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