diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Validate/Barcode/AdapterAbstract.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Validate/Barcode/AdapterAbstract.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,315 @@
+<?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: AdapterAbstract.php 20785 2010-01-31 09:43:03Z mikaelkael $
+ */
+
+/**
+ * @see Zend_Validate_Barcode_AdapterInterface
+ */
+require_once 'Zend/Validate/Barcode/AdapterInterface.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
+ */
+abstract class Zend_Validate_Barcode_AdapterAbstract
+    implements Zend_Validate_Barcode_AdapterInterface
+{
+    /**
+     * Allowed barcode lengths
+     * @var integer|array|string
+     */
+    protected $_length;
+
+    /**
+     * Allowed barcode characters
+     * @var string
+     */
+    protected $_characters;
+
+    /**
+     * Callback to checksum function
+     * @var string|array
+     */
+    protected $_checksum;
+
+    /**
+     * Is a checksum value included?
+     * @var boolean
+     */
+    protected $_hasChecksum = true;
+
+    /**
+     * Checks the length of a barcode
+     *
+     * @param  string $value The barcode to check for proper length
+     * @return boolean
+     */
+    public function checkLength($value)
+    {
+        if (!is_string($value)) {
+            return false;
+        }
+
+        $fixum  = strlen($value);
+        $found  = false;
+        $length = $this->getLength();
+        if (is_array($length)) {
+            foreach ($length as $value) {
+                if ($fixum == $value) {
+                    $found = true;
+                }
+
+                if ($value == -1) {
+                    $found = true;
+                }
+            }
+        } elseif ($fixum == $length) {
+            $found = true;
+        } elseif ($length == -1) {
+            $found = true;
+        } elseif ($length == 'even') {
+            $count = $fixum % 2;
+            $found = ($count == 0) ? true : false;
+        } elseif ($length == 'odd') {
+            $count = $fixum % 2;
+            $found = ($count == 1) ? true : false;
+        }
+
+        return $found;
+    }
+
+    /**
+     * Checks for allowed characters within the barcode
+     *
+     * @param  string $value The barcode to check for allowed characters
+     * @return boolean
+     */
+    public function checkChars($value)
+    {
+        if (!is_string($value)) {
+            return false;
+        }
+
+        $characters = $this->getCharacters();
+        if ($characters == 128) {
+            for ($x = 0; $x < 128; ++$x) {
+                $value = str_replace(chr($x), '', $value);
+            }
+        } else {
+            $chars = str_split($characters);
+            foreach ($chars as $char) {
+                $value = str_replace($char, '', $value);
+            }
+        }
+
+        if (strlen($value) > 0) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Validates the checksum
+     *
+     * @param  string $value The barcode to check the checksum for
+     * @return boolean
+     */
+    public function checksum($value)
+    {
+        $checksum = $this->getChecksum();
+        if (!empty($checksum)) {
+            if (method_exists($this, $checksum)) {
+                return call_user_func(array($this, $checksum), $value);
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Returns the allowed barcode length
+     *
+     * @return string
+     */
+    public function getLength()
+    {
+        return $this->_length;
+    }
+
+    /**
+     * Returns the allowed characters
+     *
+     * @return integer|string
+     */
+    public function getCharacters()
+    {
+        return $this->_characters;
+    }
+
+    /**
+     * Returns the checksum function name
+     *
+     */
+    public function getChecksum()
+    {
+        return $this->_checksum;
+    }
+
+    /**
+     * Returns if barcode uses checksum
+     *
+     * @return boolean
+     */
+    public function getCheck()
+    {
+        return $this->_hasChecksum;
+    }
+
+    /**
+     * Sets the checksum validation
+     *
+     * @param  boolean $check
+     * @return Zend_Validate_Barcode_AdapterAbstract
+     */
+    public function setCheck($check)
+    {
+        $this->_hasChecksum = (boolean) $check;
+        return $this;
+    }
+
+    /**
+     * Validates the checksum (Modulo 10)
+     * GTIN implementation factor 3
+     *
+     * @param  string $value The barcode to validate
+     * @return boolean
+     */
+    protected function _gtin($value)
+    {
+        $barcode = substr($value, 0, -1);
+        $sum     = 0;
+        $length  = strlen($barcode) - 1;
+
+        for ($i = 0; $i <= $length; $i++) {
+            if (($i % 2) === 0) {
+                $sum += $barcode[$length - $i] * 3;
+            } else {
+                $sum += $barcode[$length - $i];
+            }
+        }
+
+        $calc     = $sum % 10;
+        $checksum = ($calc === 0) ? 0 : (10 - $calc);
+        if ($value[$length + 1] != $checksum) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Validates the checksum (Modulo 10)
+     * IDENTCODE implementation factors 9 and 4
+     *
+     * @param  string $value The barcode to validate
+     * @return boolean
+     */
+    protected function _identcode($value)
+    {
+        $barcode = substr($value, 0, -1);
+        $sum     = 0;
+        $length  = strlen($value) - 2;
+
+        for ($i = 0; $i <= $length; $i++) {
+            if (($i % 2) === 0) {
+                $sum += $barcode[$length - $i] * 4;
+            } else {
+                $sum += $barcode[$length - $i] * 9;
+            }
+        }
+
+        $calc     = $sum % 10;
+        $checksum = ($calc === 0) ? 0 : (10 - $calc);
+        if ($value[$length + 1] != $checksum) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Validates the checksum (Modulo 10)
+     * CODE25 implementation factor 3
+     *
+     * @param  string $value The barcode to validate
+     * @return boolean
+     */
+    protected function _code25($value)
+    {
+        $barcode = substr($value, 0, -1);
+        $sum     = 0;
+        $length  = strlen($barcode) - 1;
+
+        for ($i = 0; $i <= $length; $i++) {
+            if (($i % 2) === 0) {
+                $sum += $barcode[$i] * 3;
+            } else {
+                $sum += $barcode[$i];
+            }
+        }
+
+        $calc     = $sum % 10;
+        $checksum = ($calc === 0) ? 0 : (10 - $calc);
+        if ($value[$length + 1] != $checksum) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * 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;
+    }
+}