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   1  <?php
   2  /**
   3   * Zend Framework
   4   *
   5   * LICENSE
   6   *
   7   * This source file is subject to the new BSD license that is bundled
   8   * with this package in the file LICENSE.txt.
   9   * It is also available through the world-wide-web at this URL:
  10   * http://framework.zend.com/license/new-bsd
  11   * If you did not receive a copy of the license and are unable to
  12   * obtain it through the world-wide-web, please send an email
  13   * to [email protected] so we can send you a copy immediately.
  14   *
  15   * @category   Zend
  16   * @package    Zend_Validate
  17   * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
  18   * @license    http://framework.zend.com/license/new-bsd     New BSD License
  19   * @version    $Id$
  20   */
  21  
  22  /**
  23   * @see Zend_Validate_Abstract
  24   */
  25  require_once 'Zend/Validate/Abstract.php';
  26  
  27  /**
  28   * @see Zend_Locale_Format
  29   */
  30  require_once 'Zend/Locale/Format.php';
  31  
  32  /**
  33   * @category   Zend
  34   * @package    Zend_Validate
  35   * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
  36   * @license    http://framework.zend.com/license/new-bsd     New BSD License
  37   */
  38  class Zend_Validate_Float extends Zend_Validate_Abstract
  39  {
  40      const INVALID   = 'floatInvalid';
  41      const NOT_FLOAT = 'notFloat';
  42  
  43      /**
  44       * @var array
  45       */
  46      protected $_messageTemplates = array(
  47          self::INVALID   => "Invalid type given, value should be float, string, or integer",
  48          self::NOT_FLOAT => "'%value%' does not appear to be a float",
  49      );
  50  
  51      protected $_locale;
  52  
  53      /**
  54       * Constructor for the float validator
  55       *
  56       * @param string|Zend_Config|Zend_Locale $locale
  57       */
  58      public function __construct($locale = null)
  59      {
  60          if ($locale instanceof Zend_Config) {
  61              $locale = $locale->toArray();
  62          }
  63  
  64          if (is_array($locale)) {
  65              if (array_key_exists('locale', $locale)) {
  66                  $locale = $locale['locale'];
  67              } else {
  68                  $locale = null;
  69              }
  70          }
  71  
  72          if (empty($locale)) {
  73              require_once 'Zend/Registry.php';
  74              if (Zend_Registry::isRegistered('Zend_Locale')) {
  75                  $locale = Zend_Registry::get('Zend_Locale');
  76              }
  77          }
  78  
  79          $this->setLocale($locale);
  80      }
  81  
  82      /**
  83       * Returns the set locale
  84       */
  85      public function getLocale()
  86      {
  87          return $this->_locale;
  88      }
  89  
  90      /**
  91       * Sets the locale to use
  92       *
  93       * @param string|Zend_Locale $locale
  94       */
  95      public function setLocale($locale = null)
  96      {
  97          require_once 'Zend/Locale.php';
  98          $this->_locale = Zend_Locale::findLocale($locale);
  99          return $this;
 100      }
 101  
 102      /**
 103       * Defined by Zend_Validate_Interface
 104       *
 105       * Returns true if and only if $value is a floating-point value
 106       *
 107       * @param  string $value
 108       * @return boolean
 109       */
 110      public function isValid($value)
 111      {
 112          if (!is_string($value) && !is_int($value) && !is_float($value)) {
 113              $this->_error(self::INVALID);
 114              return false;
 115          }
 116  
 117          if (is_float($value)) {
 118              return true;
 119          }
 120  
 121          $this->_setValue($value);
 122          try {
 123              if (!Zend_Locale_Format::isFloat($value, array('locale' => $this->_locale))) {
 124                  $this->_error(self::NOT_FLOAT);
 125                  return false;
 126              }
 127          } catch (Zend_Locale_Exception $e) {
 128              $this->_error(self::NOT_FLOAT);
 129              return false;
 130          }
 131  
 132          return true;
 133      }
 134  }