<?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: NotEmpty.php 22691 2010-07-26 19:29:14Z thomas $

 */

/**

 * @see Zend_Validate_Abstract

 */

require_once 'Zend/Validate/Abstract.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_NotEmpty extends Zend_Validate_Abstract

{

    const BOOLEAN       = 1;

    const INTEGER       = 2;

    const FLOAT         = 4;

    const STRING        = 8;

    const ZERO          = 16;

    const EMPTY_ARRAY   = 32;

    const NULL          = 64;

    const PHP           = 127;

    const SPACE         = 128;

    const OBJECT        = 256;

    const OBJECT_STRING = 512;

    const OBJECT_COUNT  = 1024;

    const ALL           = 2047;

    const INVALID  = 'notEmptyInvalid';

    const IS_EMPTY = 'isEmpty';

    protected $_constants = array(

        self::BOOLEAN       => 'boolean',

        self::INTEGER       => 'integer',

        self::FLOAT         => 'float',

        self::STRING        => 'string',

        self::ZERO          => 'zero',

        self::EMPTY_ARRAY   => 'array',

        self::NULL          => 'null',

        self::PHP           => 'php',

        self::SPACE         => 'space',

        self::OBJECT        => 'object',

        self::OBJECT_STRING => 'objectstring',

        self::OBJECT_COUNT  => 'objectcount',

        self::ALL           => 'all',

    );

    /**

     * @var array

     */

    protected $_messageTemplates = array(

        self::IS_EMPTY => "Value is required and can't be empty",

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

    );

    /**

     * Internal type to detect

     *

     * @var integer

     */

    protected $_type = 493;

    /**

     * Constructor

     *

     * @param string|array|Zend_Config $options OPTIONAL

     */

    public function __construct($options = null)

    {

        if ($options instanceof Zend_Config) {

            $options = $options->toArray();

        } else if (!is_array($options)) {

            $options = func_get_args();

            $temp    = array();

            if (!empty($options)) {

                $temp['type'] = array_shift($options);

            }

            $options = $temp;

        }

        if (is_array($options) && array_key_exists('type', $options)) {

            $this->setType($options['type']);

        }

    }

    /**

     * Returns the set types

     *

     * @return array

     */

    public function getType()

    {

        return $this->_type;

    }

    /**

     * Set the types

     *

     * @param  integer|array $type

     * @throws Zend_Validate_Exception

     * @return Zend_Validate_NotEmpty

     */

    public function setType($type = null)

    {

        if (is_array($type)) {

            $detected = 0;

            foreach($type as $value) {

                if (is_int($value)) {

                    $detected += $value;

                } else if (in_array($value, $this->_constants)) {

                    $detected += array_search($value, $this->_constants);

                }

            }

            $type = $detected;

        } else if (is_string($type) && in_array($type, $this->_constants)) {

            $type = array_search($type, $this->_constants);

        }

        if (!is_int($type) || ($type < 0) || ($type > self::ALL)) {

            require_once 'Zend/Validate/Exception.php';

            throw new Zend_Validate_Exception('Unknown type');

        }

        $this->_type = $type;

        return $this;

    }

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns true if and only if $value is not an empty value.

     *

     * @param  string $value

     * @return boolean

     */

    public function isValid($value)

    {

        if ($value !== null && !is_string($value) && !is_int($value) && !is_float($value) &&

            !is_bool($value) && !is_array($value) && !is_object($value)) {

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

            return false;

        }

        $type    = $this->getType();

        $this->_setValue($value);

        $object  = false;

        // OBJECT_COUNT (countable object)

        if ($type >= self::OBJECT_COUNT) {

            $type -= self::OBJECT_COUNT;

            $object = true;

            if (is_object($value) && ($value instanceof Countable) && (count($value) == 0)) {

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

                return false;

            }

        }

        // OBJECT_STRING (object's toString)

        if ($type >= self::OBJECT_STRING) {

            $type -= self::OBJECT_STRING;

            $object = true;

            if ((is_object($value) && (!method_exists($value, '__toString'))) ||

                (is_object($value) && (method_exists($value, '__toString')) && (((string) $value) == ""))) {

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

                return false;

            }

        }

        // OBJECT (object)

        if ($type >= self::OBJECT) {

            $type -= self::OBJECT;

            // fall trough, objects are always not empty

        } else if ($object === false) {

            // object not allowed but object given -> return false

            if (is_object($value)) {

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

                return false;

            }

        }

        // SPACE ('   ')

        if ($type >= self::SPACE) {

            $type -= self::SPACE;

            if (is_string($value) && (preg_match('/^\s+$/s', $value))) {

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

                return false;

            }

        }

        // NULL (null)

        if ($type >= self::NULL) {

            $type -= self::NULL;

            if ($value === null) {

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

                return false;

            }

        }

        // EMPTY_ARRAY (array())

        if ($type >= self::EMPTY_ARRAY) {

            $type -= self::EMPTY_ARRAY;

            if (is_array($value) && ($value == array())) {

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

                return false;

            }

        }

        // ZERO ('0')

        if ($type >= self::ZERO) {

            $type -= self::ZERO;

            if (is_string($value) && ($value == '0')) {

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

                return false;

            }

        }

        // STRING ('')

        if ($type >= self::STRING) {

            $type -= self::STRING;

            if (is_string($value) && ($value == '')) {

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

                return false;

            }

        }

        // FLOAT (0.0)

        if ($type >= self::FLOAT) {

            $type -= self::FLOAT;

            if (is_float($value) && ($value == 0.0)) {

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

                return false;

            }

        }

        // INTEGER (0)

        if ($type >= self::INTEGER) {

            $type -= self::INTEGER;

            if (is_int($value) && ($value == 0)) {

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

                return false;

            }

        }

        // BOOLEAN (false)

        if ($type >= self::BOOLEAN) {

            $type -= self::BOOLEAN;

            if (is_bool($value) && ($value == false)) {

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

                return false;

            }

        }

        return true;

    }

}