<?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) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id$

 */



/**

 * @see Zend_Validate_Abstract

 */

require_once 'Zend/Validate/Abstract.php';



/**

 * @see Zend_Locale_Format

 */

require_once 'Zend/Locale/Format.php';



/**

 * @category   Zend

 * @package    Zend_Validate

 * @copyright  Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Validate_Float extends Zend_Validate_Abstract

{

    const INVALID   = 'floatInvalid';

    const NOT_FLOAT = 'notFloat';



    /**

     * @var array

     */

    protected $_messageTemplates = array(

        self::INVALID   => "Invalid type given. String, integer or float expected",

        self::NOT_FLOAT => "'%value%' does not appear to be a float",

    );



    protected $_locale;



    /**

     * Constructor for the float validator

     *

     * @param string|Zend_Config|Zend_Locale $locale

     */

    public function __construct($locale = null)

    {

        if ($locale instanceof Zend_Config) {

            $locale = $locale->toArray();

        }



        if (is_array($locale)) {

            if (array_key_exists('locale', $locale)) {

                $locale = $locale['locale'];

            } else {

                $locale = null;

            }

        }



        if (empty($locale)) {

            require_once 'Zend/Registry.php';

            if (Zend_Registry::isRegistered('Zend_Locale')) {

                $locale = Zend_Registry::get('Zend_Locale');

            }

        }



        $this->setLocale($locale);

    }



    /**

     * Returns the set locale

     */

    public function getLocale()

    {

        return $this->_locale;

    }



    /**

     * Sets the locale to use

     *

     * @param string|Zend_Locale $locale

     */

    public function setLocale($locale = null)

    {

        require_once 'Zend/Locale.php';

        $this->_locale = Zend_Locale::findLocale($locale);

        return $this;

    }



    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns true if and only if $value is a floating-point value

     *

     * @param  string $value

     * @return boolean

     */

    public function isValid($value)

    {

        if (!is_string($value) && !is_int($value) && !is_float($value)) {

            $this->_error(self::INVALID);

            return false;

        }



        if (is_float($value)) {

            return true;

        }



        $this->_setValue($value);

        try {

            if (!Zend_Locale_Format::isFloat($value, array('locale' => $this->_locale))) {

                $this->_error(self::NOT_FLOAT);

                return false;

            }

        } catch (Zend_Locale_Exception $e) {

            $this->_error(self::NOT_FLOAT);

            return false;

        }



        return true;

    }

}

