1: <?php
 2: /**
 3:  * Magento
 4:  *
 5:  * NOTICE OF LICENSE
 6:  *
 7:  * This source file is subject to the Open Software License (OSL 3.0)
 8:  * that is bundled with this package in the file LICENSE.txt.
 9:  * It is also available through the world-wide-web at this URL:
10:  * http://opensource.org/licenses/osl-3.0.php
11:  * If you did not receive a copy of the license and are unable to
12:  * obtain it through the world-wide-web, please send an email
13:  * to license@magentocommerce.com so we can send you a copy immediately.
14:  *
15:  * DISCLAIMER
16:  *
17:  * Do not edit or add to this file if you wish to upgrade Magento to newer
18:  * versions in the future. If you wish to customize Magento for your
19:  * needs please refer to http://www.magentocommerce.com for more information.
20:  *
21:  * @category    Mage
22:  * @package     Mage_Eav
23:  * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
24:  * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
25:  */
26: 
27: 
28: /**
29:  * Enter description here...
30:  *
31:  * Properties:
32:  * - prefix
33:  * - pad_length
34:  * - pad_char
35:  * - last_id
36:  */
37: class Mage_Eav_Model_Entity_Increment_Alphanum extends Mage_Eav_Model_Entity_Increment_Abstract
38: {
39:     public function getAllowedChars()
40:     {
41:         return '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
42:     }
43: 
44:     public function getNextId()
45:     {
46:         $lastId = $this->getLastId();
47: 
48:         if (strpos($lastId, $this->getPrefix())===0) {
49:             $lastId = substr($lastId, strlen($this->getPrefix()));
50:         }
51: 
52:         $lastId = str_pad((string)$lastId, $this->getPadLength(), $this->getPadChar(), STR_PAD_LEFT);
53: 
54:         $nextId = '';
55:         $bumpNextChar = true;
56:         $chars = $this->getAllowedChars();
57:         $lchars = strlen($chars);
58:         $lid = strlen($lastId)-1;
59: 
60:         for ($i = $lid; $i >= 0; $i--) {
61:             $p = strpos($chars, $lastId{$i});
62:             if (false===$p) {
63:                 throw Mage::exception('Mage_Eav', Mage::helper('eav')->__('Invalid character encountered in increment ID: %s', $lastId));
64:             }
65:             if ($bumpNextChar) {
66:                 $p++;
67:                 $bumpNextChar = false;
68:             }
69:             if ($p===$lchars) {
70:                 $p = 0;
71:                 $bumpNextChar = true;
72:             }
73:             $nextId = $chars{$p}.$nextId;
74:         }
75: 
76:         return $this->format($nextId);
77:     }
78: }
79: