<?php

/**
 * Returns a human readable error description for file upload errors.
 *
 * @author Dan Brown <danbrown@php.net>
 * @author Michiel Thalen
 * @copyright
 * -------------------------------------------------------------------- 
 *                   The PHP License, version 3.01
 * Copyright (c) 1999 - 2014 The PHP Group. All rights reserved.
 * -------------------------------------------------------------------- 
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted provided that the following conditions
 * are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the
 *      distribution.
 *
 *   3. The name "PHP" must not be used to endorse or promote products
 *      derived from this software without prior written permission. For
 *      written permission, please contact group@php.net.
 *
 *   4. Products derived from this software may not be called "PHP", nor
 *      may "PHP" appear in their name, without prior written permission
 *      from group@php.net.  You may indicate that your software works in
 *      conjunction with PHP by saying "Foo for PHP" instead of calling
 *      it "PHP Foo" or "phpfoo"
 *
 *   5. The PHP Group may publish revised and/or new versions of the
 *      license from time to time. Each version will be given a
 *      distinguishing version number.
 *      Once covered code has been published under a particular version
 *      of the license, you may always continue to use it under the terms
 *      of that version. You may also choose to use such covered code
 *      under the terms of any subsequent version of the license
 *      published by the PHP Group. No one other than the PHP Group has
 *      the right to modify the terms applicable to covered code created
 *      under this License.
 *
 *   6. Redistributions of any form whatsoever must retain the following
 *      acknowledgment:
 *      "This product includes PHP software, freely available from
 *      <http://www.php.net/software/>".
 *
 * THIS SOFTWARE IS PROVIDED BY THE PHP DEVELOPMENT TEAM ``AS IS'' AND 
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
 * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE PHP
 * DEVELOPMENT TEAM OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * -------------------------------------------------------------------- 
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the PHP Group.
 *
 * The PHP Group can be contacted via Email at group@php.net.
 *
 * For more information on the PHP Group and the PHP project, 
 * please see <http://www.php.net>.
 *
 * PHP includes the Zend Engine, freely available at
 * <http://www.zend.com>.
 */

class UploadException extends Exception
{
    public function __construct($code)
    {
        $message = $this->codeToMessage($code);
        parent::__construct($message, 500);
    }

    private function codeToMessage($code)
    {
        switch ($code) {
            case UPLOAD_ERR_INI_SIZE:
                $message = 'The uploaded file exceeds the upload_max_filesize directive in php.ini';
                break;
            case UPLOAD_ERR_FORM_SIZE:
                $message = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was '.
                           'specified in the HTML form';
                break;
            case UPLOAD_ERR_PARTIAL:
                $message = 'The uploaded file was only partially uploaded';
                break;
            case UPLOAD_ERR_NO_FILE:
                $message = 'No file was uploaded';
                break;
            case UPLOAD_ERR_NO_TMP_DIR:
                $message = 'Missing a temporary folder';
                break;
            case UPLOAD_ERR_CANT_WRITE:
                $message = 'Failed to write file to disk';
                break;
            case UPLOAD_ERR_EXTENSION:
                $message = 'File upload stopped by extension';
                break;

            default:
                $message = 'Unknown upload error';
                break;
        }

        return $message;
    }
}