1: <?php
 2: /**
 3:  * Abstract send email
 4:  *
 5:  * PHP 5
 6:  *
 7:  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 8:  * Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
 9:  *
10:  * Licensed under The MIT License
11:  * Redistributions of files must retain the above copyright notice.
12:  *
13:  * @copyright     Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
14:  * @link          http://cakephp.org CakePHP(tm) Project
15:  * @package       Cake.Network.Email
16:  * @since         CakePHP(tm) v 2.0.0
17:  * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
18:  */
19: 
20: /**
21:  * Abstract transport for sending email
22:  *
23:  * @package       Cake.Network.Email
24:  */
25: abstract class AbstractTransport {
26: 
27: /**
28:  * Configurations
29:  *
30:  * @var array
31:  */
32:     protected $_config = array();
33: 
34: /**
35:  * Send mail
36:  *
37:  * @params CakeEmail $email
38:  * @return array
39:  */
40:     abstract public function send(CakeEmail $email);
41: 
42: /**
43:  * Set the config
44:  *
45:  * @param array $config
46:  * @return array Returns configs
47:  */
48:     public function config($config = null) {
49:         if (is_array($config)) {
50:             $this->_config = $config;
51:         }
52:         return $this->_config;
53:     }
54: 
55: /**
56:  * Help to convert headers in string
57:  *
58:  * @param array $headers Headers in format key => value
59:  * @param string $eol
60:  * @return string
61:  */
62:     protected function _headersToString($headers, $eol = "\r\n") {
63:         $out = '';
64:         foreach ($headers as $key => $value) {
65:             if ($value === false || $value === null || $value === '') {
66:                 continue;
67:             }
68:             $out .= $key . ': ' . $value . $eol;
69:         }
70:         if (!empty($out)) {
71:             $out = substr($out, 0, -1 * strlen($eol));
72:         }
73:         return $out;
74:     }
75: 
76: }
77: