1: <?php
 2: /**
 3:  * The Ingo_Script_Sieve_Test_Exists class represents a test for the
 4:  * existence of one or more headers in a message.
 5:  *
 6:  * See the enclosed file LICENSE for license information (ASL).  If you
 7:  * did not receive this file, see http://www.horde.org/licenses/apache.
 8:  *
 9:  * @author  Mike Cochrane <mike@graftonhall.co.nz>
10:  * @package Ingo
11:  */
12: class Ingo_Script_Sieve_Test_Exists extends Ingo_Script_Sieve_Test
13: {
14:     /**
15:      * Constructor.
16:      *
17:      * @param array $vars  Any required parameters.
18:      */
19:     public function __construct($vars = array())
20:     {
21:         $this->_vars['headers'] = isset($vars['headers'])
22:             ? $vars['headers']
23:             : '';
24:     }
25: 
26:     /**
27:      * Checks if the rule parameters are valid.
28:      *
29:      * @return boolean|string  True if this rule is valid, an error message
30:      *                         otherwise.
31:      */
32:     public function check()
33:     {
34:         return preg_split('(\r\n|\n|\r)', $this->_vars['headers'])
35:             ? true
36:             : _("No headers specified");
37:     }
38: 
39:     /**
40:      * Returns a script snippet representing this rule and any sub-rules.
41:      *
42:      * @return string  A Sieve script snippet.
43:      */
44:     public function toCode()
45:     {
46:         $code = 'exists ';
47:         $headers = preg_split('(\r\n|\n|\r)', $this->_vars['headers']);
48:         if (count($headers) > 1) {
49:             $code .= "[";
50:             $headerstr = '';
51:             foreach ($headers as $header) {
52:                 $headerstr .= (empty($headerstr) ? '"' : ', "') .
53:                     Ingo_Script_Sieve::escapeString($header) . '"';
54:             }
55:             $code .= $headerstr . "] ";
56:         } elseif (count($headers) == 1) {
57:             $code .= '"' . Ingo_Script_Sieve::escapeString($headers[0]) . '" ';
58:         } else {
59:             return "**error** No Headers Specified";
60:         }
61: 
62:         return $code;
63:     }
64: 
65: }
66: