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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Microid class
*
* 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 ID
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2008 StatusNet, Inc.
* @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);
}
/**
* A class for microids
*
* @category ID
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
* @see http://microid.org/
*/
class Microid
{
/** Agent part of the ID. */
var $agent = null;
/** Resource part of the ID. */
var $resource = null;
/**
* Constructor
*
* @param string $agent Agent of the ID
* @param string $resource Resource part
*/
function __construct($agent, $resource)
{
$this->agent = $agent;
$this->resource = $resource;
}
/**
* Generate a MicroID string
*
* @return string MicroID for agent and resource
*/
function toString()
{
$agent_proto = $this->_getProto($this->agent);
$resource_proto = $this->_getProto($this->resource);
return $agent_proto.'+'.$resource_proto.':sha1:'.
sha1(sha1($this->agent).sha1($this->resource));
}
/**
* Utility for getting the protocol part of a URI
*
* @param string $uri URI to parse
*
* @return string scheme part of the URI
*/
function _getProto($uri)
{
$colon = strpos($uri, ':');
return substr($uri, 0, $colon);
}
}
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