<?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: Validate.php 21339 2010-03-05 15:32:25Z thomas $

 */

/**

 * @see Zend_Validate_Interface

 */

require_once 'Zend/Validate/Interface.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

 */

class Zend_Validate implements Zend_Validate_Interface

{

    /**

     * Validator chain

     *

     * @var array

     */

    protected $_validators = array();

    /**

     * Array of validation failure messages

     *

     * @var array

     */

    protected $_messages = array();

    /**

     * Default Namespaces

     *

     * @var array

     */

    protected static $_defaultNamespaces = array();

    /**

     * Array of validation failure message codes

     *

     * @var array

     * @deprecated Since 1.5.0

     */

    protected $_errors = array();

    /**

     * Adds a validator to the end of the chain

     *

     * If $breakChainOnFailure is true, then if the validator fails, the next validator in the chain,

     * if one exists, will not be executed.

     *

     * @param  Zend_Validate_Interface $validator

     * @param  boolean                 $breakChainOnFailure

     * @return Zend_Validate Provides a fluent interface

     */

    public function addValidator(Zend_Validate_Interface $validator, $breakChainOnFailure = false)

    {

        $this->_validators[] = array(

            'instance' => $validator,

            'breakChainOnFailure' => (boolean) $breakChainOnFailure

            );

        return $this;

    }

    /**

     * Returns true if and only if $value passes all validations in the chain

     *

     * Validators are run in the order in which they were added to the chain (FIFO).

     *

     * @param  mixed $value

     * @return boolean

     */

    public function isValid($value)

    {

        $this->_messages = array();

        $this->_errors   = array();

        $result = true;

        foreach ($this->_validators as $element) {

            $validator = $element['instance'];

            if ($validator->isValid($value)) {

                continue;

            }

            $result = false;

            $messages = $validator->getMessages();

            $this->_messages = array_merge($this->_messages, $messages);

            $this->_errors   = array_merge($this->_errors,   array_keys($messages));

            if ($element['breakChainOnFailure']) {

                break;

            }

        }

        return $result;

    }

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns array of validation failure messages

     *

     * @return array

     */

    public function getMessages()

    {

        return $this->_messages;

    }

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns array of validation failure message codes

     *

     * @return array

     * @deprecated Since 1.5.0

     */

    public function getErrors()

    {

        return $this->_errors;

    }

    /**

     * Returns the set default namespaces

     *

     * @return array

     */

    public static function getDefaultNamespaces()

    {

        return self::$_defaultNamespaces;

    }

    /**

     * Sets new default namespaces

     *

     * @param array|string $namespace

     * @return null

     */

    public static function setDefaultNamespaces($namespace)

    {

        if (!is_array($namespace)) {

            $namespace = array((string) $namespace);

        }

        self::$_defaultNamespaces = $namespace;

    }

    /**

     * Adds a new default namespace

     *

     * @param array|string $namespace

     * @return null

     */

    public static function addDefaultNamespaces($namespace)

    {

        if (!is_array($namespace)) {

            $namespace = array((string) $namespace);

        }

        self::$_defaultNamespaces = array_unique(array_merge(self::$_defaultNamespaces, $namespace));

    }

    /**

     * Returns true when defaultNamespaces are set

     *

     * @return boolean

     */

    public static function hasDefaultNamespaces()

    {

        return (!empty(self::$_defaultNamespaces));

    }

    /**

     * @param  mixed    $value

     * @param  string   $classBaseName

     * @param  array    $args          OPTIONAL

     * @param  mixed    $namespaces    OPTIONAL

     * @return boolean

     * @throws Zend_Validate_Exception

     */

    public static function is($value, $classBaseName, array $args = array(), $namespaces = array())

    {

        $namespaces = array_merge((array) $namespaces, self::$_defaultNamespaces, array('Zend_Validate'));

        $className  = ucfirst($classBaseName);

        try {

            if (!class_exists($className, false)) {

                require_once 'Zend/Loader.php';

                foreach($namespaces as $namespace) {

                    $class = $namespace . '_' . $className;

                    $file  = str_replace('_', DIRECTORY_SEPARATOR, $class) . '.php';

                    if (Zend_Loader::isReadable($file)) {

                        Zend_Loader::loadClass($class);

                        $className = $class;

                        break;

                    }

                }

            }

            $class = new ReflectionClass($className);

            if ($class->implementsInterface('Zend_Validate_Interface')) {

                if ($class->hasMethod('__construct')) {

                    $keys    = array_keys($args);

                    $numeric = false;

                    foreach($keys as $key) {

                        if (is_numeric($key)) {

                            $numeric = true;

                            break;

                        }

                    }

                    if ($numeric) {

                        $object = $class->newInstanceArgs($args);

                    } else {

                        $object = $class->newInstance($args);

                    }

                } else {

                    $object = $class->newInstance();

                }

                return $object->isValid($value);

            }

        } catch (Zend_Validate_Exception $ze) {

            // if there is an exception while validating throw it

            throw $ze;

        } catch (Exception $e) {

            // fallthrough and continue for missing validation classes

        }

        require_once 'Zend/Validate/Exception.php';

        throw new Zend_Validate_Exception("Validate class not found from basename '$classBaseName'");

    }

    /**

     * Returns the maximum allowed message length

     *

     * @return integer

     */

    public static function getMessageLength()

    {

        require_once 'Zend/Validate/Abstract.php';

        return Zend_Validate_Abstract::getMessageLength();

    }

    /**

     * Sets the maximum allowed message length

     *

     * @param integer $length

     */

    public static function setMessageLength($length = -1)

    {

        require_once 'Zend/Validate/Abstract.php';

        Zend_Validate_Abstract::setMessageLength($length);

    }

    /**

     * Returns the default translation object

     *

     * @return Zend_Translate_Adapter|null

     */

    public static function getDefaultTranslator($translator = null)

    {

        require_once 'Zend/Validate/Abstract.php';

        return Zend_Validate_Abstract::getDefaultTranslator();

    }

    /**

     * Sets a default translation object for all validation objects

     *

     * @param Zend_Translate|Zend_Translate_Adapter|null $translator

     */

    public static function setDefaultTranslator($translator = null)

    {

        require_once 'Zend/Validate/Abstract.php';

        Zend_Validate_Abstract::setDefaultTranslator($translator);

    }

}