<?php

/**
 * @package         Convert Forms
 * @version         3.2.11 Pro
 *
 * @author          Tassos Marinos <info@tassos.gr>
 * @link            http://www.tassos.gr
 * @copyright       Copyright © 2020 Tassos Marinos All Rights Reserved
 * @license         GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
 */

// No direct access
defined('_JEXEC') or die('Restricted access');

/**
 * CurlInterface
 *
 * An object-oriented shim that wraps the standard PHP cURL library.
 *
 * This interface has been created so that cURL functionality can be stubbed
 * out for unit testing, or swapped for an alternative library.
 *
 * @see curl
 * @package
 * @version $id$
 */
interface CurlInterface
{

	/**
	 * errNo
	 *
	 * Encapsulates curl_errno - Returns the last error number
	 * @param resource $ch - A cURL handle returned by init.
	 * @access public
	 * @return the error number or 0 if no error occured.
	 */
	public function errno($ch);

	/**
	 * error
	 *
	 * Encapsulates curl_error - Return last error string
	 * @param resource $ch - A cURL handle returned by init.
	 * @access public
	 * @return the error messge or '' if no error occured.
	 */
	public function error($ch);

	/**
	 * execute
	 *
	 * Encapsulates curl_exec - Perform a cURL session.
	 * @param resource $ch - A cURL handle returned by init.
	 * @access public
	 * @return TRUE on success, FALSE on failure.
	 */
	public function execute($ch);

	/**
	 * init
	 *
	 * Encapsulates curl_init - Initialize a cURL session.
	 * @param string $url - url to use.
	 * @access public
	 * @return cURL handle on success, FALSE on failure.
	 */
	public function init($url);

	/**
	 * setopt
	 *
	 * Encapsulates curl_setopt - Set an option for cURL transfer.
	 * @param resource $ch - A cURL handle returned by init.
	 * @param int $opt - The CURLOPT to set.
	 * @param mixed $value - The value to set.
	 * @access public
	 * @return True on success, FALSE on failure.
	 */
	public function setopt($ch, $option, $value);
}

/**
 * CurlObject
 *
 * A concrete implementation of CurlInterface using the PHP cURL library.
 *
 * @package
 * @version $id$
 */
class CurlObject implements CurlInterface
{

	public function errno($ch)
	{
		return curl_errno($ch);
	}

	public function error($ch)
	{
		return curl_error($ch);
	}

	public function execute($ch)
	{
		return curl_exec($ch);
	}

	public function init($url)
	{
		return curl_init($url);
	}

	public function setopt($ch, $option, $value)
	{
		return curl_setopt($ch, $option, $value);
	}

}

?>
