[ZF-8675] Zend_Validate_Barcode:

- added a POSTNET adapter

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@20021 44c647ce-9c0f-0410-b52a-842ac1e357ba

documentation/manual/en/module_specs/Zend_Validate-Barcode.xml

@@ -250,6 +250,18 @@
 
         <listitem>
             <para>
+                <emphasis>POSTNET</emphasis>: Postnet is used by the US Postal Service.
+            </para>
+
+            <para>
+                This barcode can have a length of 6, 7, 10 or 12 characters. It supports only
+                digits, and the last digit is always a checksum. This standard is mainly used
+                by the United States Postal Services.
+            </para>
+        </listitem>
+
+        <listitem>
+            <para>
                 <emphasis>ROYALMAIL</emphasis>: Royalmail is used by Royal Mail.
             </para>
 

library/Zend/Validate/Barcode/Postnet.php

@@ -0,0 +1,78 @@
+<?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) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id:$
+ */
+
+/**
+ * @see Zend_Validate_Barcode_AdapterAbstract
+ */
+require_once 'Zend/Validate/Barcode/AdapterAbstract.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Validate
+ * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Validate_Barcode_Postnet extends Zend_Validate_Barcode_AdapterAbstract
+{
+    /**
+     * Allowed barcode lengths
+     * @var integer
+     */
+    protected $_length = array(6, 7, 10, 12);
+
+    /**
+     * Allowed barcode characters
+     * @var string
+     */
+    protected $_characters = '0123456789';
+
+    /**
+     * Checksum function
+     * @var string
+     */
+    protected $_checksum = '_postnet';
+
+    /**
+     * Validates the checksum ()
+     * POSTNET implementation
+     *
+     * @param  string $value The barcode to validate
+     * @return boolean
+     */
+    protected function _postnet($value)
+    {
+        $checksum = substr($value, -1, 1);
+        $values   = str_split(substr($value, 0, -1));
+
+        $check = 0;
+        foreach($values as $row) {
+            $check += $row;
+        }
+
+        $check %= 10;
+        $check = 10 - $check;
+        if ($check == $checksum) {
+            return true;
+        }
+
+        return false;
+    }
+}

tests/Zend/Validate/BarcodeTest.php

@@ -362,6 +362,14 @@ class Zend_Validate_BarcodeTest extends PHPUnit_Framework_TestCase
         $this->assertFalse($barcode->isValid('21348075016402'));
     }
 
+    public function testPOSTNET()
+    {
+        $barcode = new Zend_Validate_Barcode('postnet');
+        $this->assertTrue($barcode->isValid('5555512372'));
+        $this->assertFalse($barcode->isValid('123'));
+        $this->assertFalse($barcode->isValid('5555512371'));
+    }
+
     public function testROYALMAIL()
     {
         $barcode = new Zend_Validate_Barcode('royalmail');