gjerokrsteski/pimf-framework

<?php
/**
 * Util
 *
 * @copyright Copyright (c) 2010-2013 Gjero Krsteski (http://krsteski.de)
 * @license   http://opensource.org/licenses/MIT MIT License
 */

namespace Pimf\Util;

/**
 * A file uploaded through a form.
 *
 * <code>
 *
 *   // Create a file instance.
 *   $upload = new Uploaded(
 *     $_FILES['tmp_name'], $_FILES['name'], $_FILES['type'], $_FILES['size'], $_FILES['error']
 *   );
 *
 *   if ($upload instanceof Uploaded) {
 *     $upload->move('path/to/your/images/dir', $upload->getClientOriginalName());
 *   }
 *
 * </code>
 *
 * @package Util
 * @author  Gjero Krsteski <gjero@krsteski.de>
 */
class Uploaded extends File
{
    /**
     * Whether the test mode is activated.
     * Local files are used in test mode hence the code should not enforce HTTP uploads.
     *
     * @var bool
     */
    private $test = false;

    /**
     * The original name of the uploaded file.
     *
     * @var string
     */
    private $name;

    /**
     * The mime type provided by the uploader.
     *
     * @var string
     */
    private $mime;

    /**
     * The file size provided by the uploader.
     *
     * @var string
     */
    private $size;

    /**
     * The UPLOAD_ERR_XXX constant provided by the uploader.
     *
     * @var integer
     */
    private $error;

    /**
     * Accepts the information of the uploaded file as provided by the PHP global $_FILES.
     *
     * <code>
     *   // Create a file instance.
     *   $file = new Uploaded(
     *     $_FILES['tmp_name'], $_FILES['name'], $_FILES['type'], $_FILES['size'], $_FILES['error']
     *   );
     * </code>
     *
     * @param string      $path  The full temporary path to the file
     * @param string      $name  The original file name
     * @param string|null $mime  The type of the file as provided by PHP
     * @param string|null $size  The file size
     * @param int|null    $error The error constant of the upload (one of PHP's UPLOAD_ERR_XXX constants)
     * @param bool        $test  Whether the test mode is active
     *
     * @throws \RuntimeException If file_uploads is disabled
     */
    public function __construct($path, $name, $mime = null, $size = null, $error = null, $test = false)
    {
        if (!ini_get('file_uploads')) {
            throw new \RuntimeException('Unable to create file because "file_uploads" is disabled in your php.ini');
        }

        $this->name = $this->getName($name);
        $this->mime = $mime ?: 'application/octet-stream';
        $this->size = $size;
        $this->error = $error ?: UPLOAD_ERR_OK;
        $this->test = (bool)$test;

        parent::__construct($path, UPLOAD_ERR_OK === $this->error);
    }

    /**
     * Returns the original file name.
     *
     * It is extracted from the request from which the file has been uploaded.
     * Then is should not be considered as a safe value.
     *
     * @return string
     */
    public function getClientOriginalName()
    {
        return $this->name;
    }

    /**
     * Returns the file mime type.
     *
     * It is extracted from the request from which the file has been uploaded.
     * Then is should not be considered as a safe value.
     *
     * @return string
     */
    public function getClientMimeType()
    {
        return $this->mime;
    }

    /**
     * Returns the file size.
     *
     * It is extracted from the request from which the file has been uploaded.
     * Then is should not be considered as a safe value.
     *
     * @return string|null
     */
    public function getClientSize()
    {
        return $this->size;
    }

    /**
     * Returns the upload error.
     *
     * If the upload was successful, the constant UPLOAD_ERR_OK is returned.
     * Otherwise one of the other UPLOAD_ERR_XXX constants is returned.
     *
     * @return integer
     */
    public function getError()
    {
        return (int)$this->error;
    }

    /**
     * Returns whether the file was uploaded successfully.
     *
     * @return boolean True if no error occurred during uploading
     */
    public function isValid()
    {
        return $this->error === UPLOAD_ERR_OK;
    }

    /**
     * Moves the file to a new location.
     *
     * @param string $dir
     * @param null   $name
     *
     * @return \Pimf\Util\File
     * @throws \RuntimeException If the file has not been uploaded via Http or can not move the file.
     */
    public function move($dir, $name = null)
    {
        if ($this->isValid()) {

            if ($this->test) {
                return parent::move($dir, $name);
            }

            if (is_uploaded_file($this->getPathname())) {

                $target = $this->getTargetFile($dir, $name);

                move_uploaded_file($this->getPathname(), $target);

                chmod($target, 0666 & ~umask());

                return $target;
            }
        }

        throw new \RuntimeException("The file {$this->getPathname()} has not been uploaded via Http");
    }

    /**
     * Returns the maximum size of an uploaded file in bytes as configured in php.ini
     *
     * @return int
     */
    public static function getMaxFilesize()
    {
        $max = trim(ini_get('upload_max_filesize'));

        if ('' === $max) {
            return PHP_INT_MAX;
        }

        $unit = strtolower(substr($max, -1));
        $max = (int)substr($max, 0, -1);

        if (in_array($unit, array('g', 'm', 'k'), true)) {
            $max *= 1024;
        }

        return $max;
    }
}