<?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)

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

 * @version   $Id$

 */

/**

 * @see Zend_Validate_File_Size

 */

require_once 'Zend/Validate/File/Size.php';

/**

 * Validator for the size of all files which will be validated in sum

 *

 * @category  Zend

 * @package   Zend_Validate

 * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)

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

 */

class Zend_Validate_File_FilesSize extends Zend_Validate_File_Size

{

    /**

     * @const string Error constants

     */

    const TOO_BIG      = 'fileFilesSizeTooBig';

    const TOO_SMALL    = 'fileFilesSizeTooSmall';

    const NOT_READABLE = 'fileFilesSizeNotReadable';

    /**

     * @var array Error message templates

     */

    protected $_messageTemplates = array(

        self::TOO_BIG      => "All files in sum should have a maximum size of '%max%' but '%size%' were detected",

        self::TOO_SMALL    => "All files in sum should have a minimum size of '%min%' but '%size%' were detected",

        self::NOT_READABLE => "One or more files can not be read",

    );

    /**

     * Internal file array

     *

     * @var array

     */

    protected $_files;

    /**

     * Sets validator options

     *

     * Min limits the used diskspace for all files, when used with max=null it is the maximum filesize

     * It also accepts an array with the keys 'min' and 'max'

     *

     * @param  integer|array|Zend_Config $options Options for this validator

     * @throws Zend_Validate_Exception

     */

    public function __construct($options)

    {

        $this->_files = array();

        $this->_setSize(0);

        if ($options instanceof Zend_Config) {

            $options = $options->toArray();

        } elseif (is_scalar($options)) {

            $options = array('max' => $options);

        } elseif (!is_array($options)) {

            require_once 'Zend/Validate/Exception.php';

            throw new Zend_Validate_Exception('Invalid options to validator provided');

        }

        if (1 < func_num_args()) {

            $argv = func_get_args();

            array_shift($argv);

            $options['max'] = array_shift($argv);

            if (!empty($argv)) {

                $options['bytestring'] = array_shift($argv);

            }

        }

        parent::__construct($options);

    }

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns true if and only if the disk usage of all files is at least min and

     * not bigger than max (when max is not null).

     *

     * @param  string|array $value Real file to check for size

     * @param  array        $file  File data from Zend_File_Transfer

     * @return boolean

     */

    public function isValid($value, $file = null)

    {

        require_once 'Zend/Loader.php';

        if (is_string($value)) {

            $value = array($value);

        }

        $min  = $this->getMin(true);

        $max  = $this->getMax(true);

        $size = $this->_getSize();

        foreach ($value as $files) {

            // Is file readable ?

            if (!Zend_Loader::isReadable($files)) {

                $this->_throw($file, self::NOT_READABLE);

                continue;

            }

            if (!isset($this->_files[$files])) {

                $this->_files[$files] = $files;

            } else {

                // file already counted... do not count twice

                continue;

            }

            // limited to 2GB files

            $size += @filesize($files);

            $this->_size = $size;

            if (($max !== null) && ($max < $size)) {

                if ($this->useByteString()) {

                    $this->_max  = $this->_toByteString($max);

                    $this->_size = $this->_toByteString($size);

                    $this->_throw($file, self::TOO_BIG);

                    $this->_max  = $max;

                    $this->_size = $size;

                } else {

                    $this->_throw($file, self::TOO_BIG);

                }

            }

        }

        // Check that aggregate files are >= minimum size

        if (($min !== null) && ($size < $min)) {

            if ($this->useByteString()) {

                $this->_min  = $this->_toByteString($min);

                $this->_size = $this->_toByteString($size);

                $this->_throw($file, self::TOO_SMALL);

                $this->_min  = $min;

                $this->_size = $size;

            } else {

                $this->_throw($file, self::TOO_SMALL);

            }

        }

        if (count($this->_messages) > 0) {

            return false;

        }

        return true;

    }

}