upgrade

vendor/zendframework/zend-validator/src/Isbn/Isbn10.php

@@ -0,0 +1,61 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zend-validator for the canonical source repository
+ * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Validator\Isbn;
+
+class Isbn10
+{
+    /**
+     * @param int|string $value
+     * @return int|string
+     */
+    public function getChecksum($value)
+    {
+        $sum = $this->sum($value);
+        return $this->checksum($sum);
+    }
+
+    /**
+     * Calculate the value sum.
+     *
+     * @param int|string $value
+     * @return int
+     */
+    private function sum($value)
+    {
+        $sum = 0;
+
+        for ($i = 0; $i < 9; $i++) {
+            $sum += (10 - $i) * $value[$i];
+        }
+
+        return $sum;
+    }
+
+    /**
+     * Calculate the checksum for the value's sum.
+     *
+     * @param int $sum
+     * @return int|string
+     */
+    private function checksum($sum)
+    {
+        $checksum = 11 - ($sum % 11);
+
+        if ($checksum == 11) {
+            return '0';
+        }
+
+        if ($checksum == 10) {
+            return 'X';
+        }
+
+        return $checksum;
+    }
+}

vendor/zendframework/zend-validator/src/Isbn/Isbn13.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zend-validator for the canonical source repository
+ * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Validator\Isbn;
+
+class Isbn13
+{
+    /**
+     * @param int|string $value
+     * @return int|string
+     */
+    public function getChecksum($value)
+    {
+        $sum = $this->sum($value);
+        return $this->checksum($sum);
+    }
+
+    /**
+     * Calculate the value sum.
+     *
+     * @param int|string $value
+     * @return int
+     */
+    private function sum($value)
+    {
+        $sum = 0;
+
+        for ($i = 0; $i < 12; $i++) {
+            if ($i % 2 == 0) {
+                $sum += $value[$i];
+                continue;
+            }
+
+            $sum += 3 * $value[$i];
+        }
+
+        return $sum;
+    }
+
+    /**
+     * Calculate the checksum for the value's sum.
+     *
+     * @param int $sum
+     * @return int|string
+     */
+    private function checksum($sum)
+    {
+        $checksum = 10 - ($sum % 10);
+
+        if ($checksum == 10) {
+            return '0';
+        }
+
+        return $checksum;
+    }
+}