--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/enmi/Zend/Validate/Barcode/Royalmail.php	Thu Jan 20 19:30:54 2011 +0100
@@ -0,0 +1,121 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Validate
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Royalmail.php 20785 2010-01-31 09:43:03Z mikaelkael $
+ */
+
+/**
+ * @see Zend_Validate_Barcode_AdapterAbstract
+ */
+require_once 'Zend/Validate/Barcode/AdapterAbstract.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Validate
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Validate_Barcode_Royalmail extends Zend_Validate_Barcode_AdapterAbstract
+{
+    /**
+     * Allowed barcode lengths
+     * @var integer
+     */
+    protected $_length = -1;
+
+    /**
+     * Allowed barcode characters
+     * @var string
+     */
+    protected $_characters = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+
+    protected $_rows = array(
+        '0' => 1, '1' => 1, '2' => 1, '3' => 1, '4' => 1, '5' => 1,
+        '6' => 2, '7' => 2, '8' => 2, '9' => 2, 'A' => 2, 'B' => 2,
+        'C' => 3, 'D' => 3, 'E' => 3, 'F' => 3, 'G' => 3, 'H' => 3,
+        'I' => 4, 'J' => 4, 'K' => 4, 'L' => 4, 'M' => 4, 'N' => 4,
+        'O' => 5, 'P' => 5, 'Q' => 5, 'R' => 5, 'S' => 5, 'T' => 5,
+        'U' => 0, 'V' => 0, 'W' => 0, 'X' => 0, 'Y' => 0, 'Z' => 0,
+     );
+
+    protected $_columns = array(
+        '0' => 1, '1' => 2, '2' => 3, '3' => 4, '4' => 5, '5' => 0,
+        '6' => 1, '7' => 2, '8' => 3, '9' => 4, 'A' => 5, 'B' => 0,
+        'C' => 1, 'D' => 2, 'E' => 3, 'F' => 4, 'G' => 5, 'H' => 0,
+        'I' => 1, 'J' => 2, 'K' => 3, 'L' => 4, 'M' => 5, 'N' => 0,
+        'O' => 1, 'P' => 2, 'Q' => 3, 'R' => 4, 'S' => 5, 'T' => 0,
+        'U' => 1, 'V' => 2, 'W' => 3, 'X' => 4, 'Y' => 5, 'Z' => 0,
+    );
+
+    /**
+     * Checksum function
+     * @var string
+     */
+    protected $_checksum = '_royalmail';
+
+    /**
+     * Validates the checksum ()
+     *
+     * @param  string $value The barcode to validate
+     * @return boolean
+     */
+    protected function _royalmail($value)
+    {
+        $checksum = substr($value, -1, 1);
+        $values   = str_split(substr($value, 0, -1));
+        $rowvalue = 0;
+        $colvalue = 0;
+        foreach($values as $row) {
+            $rowvalue += $this->_rows[$row];
+            $colvalue += $this->_columns[$row];
+        }
+
+        $rowvalue %= 6;
+        $colvalue %= 6;
+
+        $rowchkvalue = array_keys($this->_rows, $rowvalue);
+        $colchkvalue = array_keys($this->_columns, $colvalue);
+        $chkvalue    = current(array_intersect($rowchkvalue, $colchkvalue));
+        if ($chkvalue == $checksum) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Allows start and stop tag within checked chars
+     *
+     * @param  string $value The barcode to check for allowed characters
+     * @return boolean
+     */
+    public function checkChars($value)
+    {
+        if ($value[0] == '(') {
+            $value = substr($value, 1);
+
+            if ($value[strlen($value) - 1] == ')') {
+                $value = substr($value, 0, -1);
+            } else {
+                return false;
+            }
+        }
+
+        return parent::checkChars($value);
+    }
+}