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trunk/proactiveenglish/lib/symfony/validator/sfUrlValidator.class.php

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+<?php
+
+/*
+ * This file is part of the symfony package.
+ * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
+ * 
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * sfUrlValidator verifies a parameter contains a value that qualifies as a valid URL.
+ *
+ * @package    symfony
+ * @subpackage validator
+ * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
+ * @version    SVN: $Id: sfUrlValidator.class.php 8720 2008-05-02 10:07:15Z FabianLange $
+ */
+class sfUrlValidator extends sfValidator
+{
+  /**
+   * Executes this validator.
+   *
+   * @param mixed A file or parameter value/array
+   * @param error An error message reference
+   *
+   * @return bool true, if this validator executes successfully, otherwise false
+   */
+  public function execute(&$value, &$error)
+  {
+    $re = '~^
+      (https?|ftp)://                         # http or https or ftp
+      (
+        ([a-z0-9-]+\.)+[a-z]{2,6}             # a domain name
+          |                                   #  or
+        \d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}    # a IP address
+      )
+      (:[0-9]+)?                              # a port (optional)
+      (/?|/\S+)                               # a /, nothing or a / with something
+    $~ix';
+    if (!preg_match($re, $value))
+    {
+      $error = $this->getParameterHolder()->get('url_error');
+      return false;
+    }
+
+    return true;
+  }
+
+  /**
+   * Initializes this validator.
+   *
+   * @param sfContext The current application context
+   * @param array   An associative array of initialization parameters
+   *
+   * @return bool true, if initialization completes successfully, otherwise false
+   */
+  public function initialize($context, $parameters = null)
+  {
+    // initialize parent
+    parent::initialize($context);
+
+    // set defaults
+    $this->getParameterHolder()->set('url_error', 'Invalid input');
+
+    $this->getParameterHolder()->add($parameters);
+
+    return true;
+  }
+}