1 files changed, 120 insertions, 0 deletions
diff --git a/lib/Zend/Validate/Alpha.php b/lib/Zend/Validate/Alpha.php
new file mode 100644
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+++ b/lib/Zend/Validate/Alpha.php
@@ -0,0 +1,120 @@
+<?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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Alpha.php 8064 2008-02-16 10:58:39Z thomas $
+ */
+
+
+/**
+ * @see Zend_Validate_Abstract
+ */
+require_once 'Zend/Validate/Abstract.php';
+
+
+/**
+ * @category   Zend
+ * @package    Zend_Validate
+ * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Validate_Alpha extends Zend_Validate_Abstract
+{
+    /**
+     * Validation failure message key for when the value contains non-alphabetic characters
+     */
+    const NOT_ALPHA = 'notAlpha';
+
+    /**
+     * Validation failure message key for when the value is an empty string
+     */
+    const STRING_EMPTY = 'stringEmpty';
+
+    /**
+     * Whether to allow white space characters; off by default
+     *
+     * @var boolean
+     */
+    public $allowWhiteSpace;
+
+    /**
+     * Alphabetic filter used for validation
+     *
+     * @var Zend_Filter_Alpha
+     */
+    protected static $_filter = null;
+
+    /**
+     * Validation failure message template definitions
+     *
+     * @var array
+     */
+    protected $_messageTemplates = array(
+        self::NOT_ALPHA    => "'%value%' has not only alphabetic characters",
+        self::STRING_EMPTY => "'%value%' is an empty string"
+    );
+
+    /**
+     * Sets default option values for this instance
+     *
+     * @param  boolean $allowWhiteSpace
+     * @return void
+     */
+    public function __construct($allowWhiteSpace = false)
+    {
+        $this->allowWhiteSpace = (boolean) $allowWhiteSpace;
+    }
+
+    /**
+     * Defined by Zend_Validate_Interface
+     *
+     * Returns true if and only if $value contains only alphabetic characters
+     *
+     * @param  string $value
+     * @return boolean
+     */
+    public function isValid($value)
+    {
+        $valueString = (string) $value;
+
+        $this->_setValue($valueString);
+
+        if ('' === $valueString) {
+            $this->_error(self::STRING_EMPTY);
+            return false;
+        }
+
+        if (null === self::$_filter) {
+            /**
+             * @see Zend_Filter_Alpha
+             */
+            require_once 'Zend/Filter/Alpha.php';
+            self::$_filter = new Zend_Filter_Alpha();
+        }
+
+        self::$_filter->allowWhiteSpace = $this->allowWhiteSpace;
+
+        if ($valueString !== self::$_filter->filter($valueString)) {
+            $this->_error(self::NOT_ALPHA);
+            return false;
+        }
+
+        return true;
+    }
+
+}