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Editing: InputFile.php

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<?php
/**
 * Class for <input type="file" /> elements
 *
 * PHP version 5
 *
 * LICENSE:
 *
 * Copyright (c) 2006-2011, Alexey Borzov <avb@php.net>,
 *                          Bertrand Mansion <golgote@mamasam.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * 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.
 *    * The names of the authors may not be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR
 * 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.
 *
 * @category   HTML
 * @package    HTML_QuickForm2
 * @author     Alexey Borzov <avb@php.net>
 * @author     Bertrand Mansion <golgote@mamasam.com>
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    SVN: $Id: InputFile.php 311713 2011-06-01 16:23:43Z avb $
 * @link       http://pear.php.net/package/HTML_QuickForm2
 */

/**
 * Base class for <input> elements
 */
require_once 'HTML/QuickForm2/Element/Input.php';

/**
 * Class for <input type="file" /> elements
 *
 * @category   HTML
 * @package    HTML_QuickForm2
 * @author     Alexey Borzov <avb@php.net>
 * @author     Bertrand Mansion <golgote@mamasam.com>
 * @version    Release: @package_version@
 */
class HTML_QuickForm2_Element_InputFile extends HTML_QuickForm2_Element_Input
{
   /**
    * Language to display error messages in
    * @var  string
    */
    protected $language = null;

/**
    * Information on uploaded file, from submit data source
    * @var array
    */
    protected $value = null;

protected $attributes = array('type' => 'file');

/**
    * Message provider for upload error messages
    * @var  callback|HTML_QuickForm2_MessageProvider
    */
    protected $messageProvider;

/**
    * Class constructor
    *
    * Possible keys in $data array are:
    *  - 'messageProvider': an instance of a class implementing
    *    HTML_QuickForm2_MessageProvider interface, this will be used to get
    *    localized error messages. Default will be used if not given.
    *  - 'language': language to display error messages in, will be passed to
    *    message provider.
    *  - 'errorMessages': (DEPRECATED, use messageProvider) an array of error
    *    messages with the following format
    *    <pre>
    *      'language code 1' => array(
    *         UPLOAD_ERR_... => 'message',
    *         ...
    *         UPLOAD_ERR_... => 'message'
    *      ),
    *      ...
    *      'language code N' => array(
    *         ...
    *      )
    *    </pre>
    *    Note that error messages for UPLOAD_ERR_INI_SIZE and UPLOAD_ERR_FORM_SIZE
    *    may contain '%d' placeholders that will be automatically replaced by the
    *    appropriate size limits. Note also that you don't need to provide messages
    *    for every possible error code in the arrays, you may e.g. override just
    *    one error message for a particular language.
    *
    * @param    string  Element name
    * @param    mixed   Attributes (either a string or an array)
    * @param    array   Data used to set up error messages for PHP's file
    *                   upload errors.
    */
    public function __construct($name = null, $attributes = null, array $data = array())
    {
        // Using deprecated 'errorMessages' key, let's keep this separate to remove later
        if (isset($data['errorMessages'])) {
            HTML_QuickForm2_Loader::loadClass('HTML_QuickForm2_MessageProvider_Default');
            $this->messageProvider = HTML_QuickForm2_MessageProvider_Default::getInstance();
            // neither array_merge() nor array_merge_recursive will do
            foreach ($data['errorMessages'] as $lang => $ary) {
                foreach ($ary as $code => $message) {
                    $this->messageProvider->set(array('file', $code), $lang, $message);
                }
            }

} elseif (isset($data['messageProvider'])) {
            if (!is_callable($data['messageProvider'])
                && !$data['messageProvider'] instanceof HTML_QuickForm2_MessageProvider
            ) {
                throw new HTML_QuickForm2_InvalidArgumentException(
                    "messageProvider: expecting a callback or an implementation"
                    . " of HTML_QuickForm2_MessageProvider"
                );
            }
            $this->messageProvider = $data['messageProvider'];

} else {
            HTML_QuickForm2_Loader::loadClass('HTML_QuickForm2_MessageProvider_Default');
            $this->messageProvider = HTML_QuickForm2_MessageProvider_Default::getInstance();
        }
        if (isset($data['language'])) {
            $this->language = $data['language'];
        }
        unset($data['messageProvider'], $data['errorMessages'], $data['language']);
        parent::__construct($name, $attributes, $data);
    }

/**
    * File upload elements cannot be frozen
    *
    * To properly "freeze" a file upload element one has to store the uploaded
    * file somewhere and store the file info in session. This is way outside
    * the scope of this class.
    *
    * @param    bool    Whether element should be frozen or editable. This
    *                   parameter is ignored in case of file uploads
    * @return   bool    Always returns false
    */
    public function toggleFrozen($freeze = null)
    {
        return false;
    }

/**
    * Returns the information on uploaded file
    *
    * @return   array|null
    */
    public function getRawValue()
    {
        return $this->value;
    }

/**
    * Alias of getRawValue(), InputFile elements do not allow filters
    * @return   array|null
    */
    public function getValue()
    {
        return $this->getRawValue();
    }

/**
    * File upload's value cannot be set here
    *
    * @param     mixed    Value for file element, this parameter is ignored
    * @return    HTML_QuickForm2_Element_InputFile
    */
    public function setValue($value)
    {
        return $this;
    }

protected function updateValue()
    {
        // request #16807: file uploads should not be added to forms with
        // method="get", enctype should be set to multipart/form-data
        // we cannot do this in setContainer() as the element may be added to
        // e.g. a group first and then the group may be added to a form
        $container = $this->getContainer();
        while (!empty($container)) {
            if ($container instanceof HTML_QuickForm2) {
                if ('get' == $container->getAttribute('method')) {
                    throw new HTML_QuickForm2_InvalidArgumentException(
                        'File upload elements can only be added to forms with post submit method'
                    );
                }
                if ('multipart/form-data' != $container->getAttribute('enctype')) {
                    $container->setAttribute('enctype', 'multipart/form-data');
                }
                break;
            }
            $container = $container->getContainer();
        }

foreach ($this->getDataSources() as $ds) {
            if ($ds instanceof HTML_QuickForm2_DataSource_Submit) {
                $value = $ds->getUpload($this->getName());
                if (null !== $value) {
                    $this->value = $value;
                    return;
                }
            }
        }
        $this->value = null;
    }

/**
    * Performs the server-side validation
    *
    * Before the Rules added to the element kick in, the element checks the
    * error code added to the $_FILES array by PHP. If the code isn't
    * UPLOAD_ERR_OK or UPLOAD_ERR_NO_FILE then a built-in error message will be
    * displayed and no further validation will take place.
    *
    * @return   boolean     Whether the element is valid
    */
    protected function validate()
    {
        if (strlen($this->error)) {
            return false;
        }
        if (isset($this->value['error']) &&
            !in_array($this->value['error'], array(UPLOAD_ERR_OK, UPLOAD_ERR_NO_FILE)))
        {
            $errorMessage = $this->messageProvider instanceof HTML_QuickForm2_MessageProvider
                            ? $this->messageProvider->get(array('file', $this->value['error']), $this->language)
                            : call_user_func($this->messageProvider, array('file', $this->value['error']), $this->language);
            if (UPLOAD_ERR_INI_SIZE == $this->value['error']) {
                $iniSize = ini_get('upload_max_filesize');
                $size    = intval($iniSize);
                switch (strtoupper(substr($iniSize, -1))) {
                    case 'G': $size *= 1024;
                    case 'M': $size *= 1024;
                    case 'K': $size *= 1024;
                }

} elseif (UPLOAD_ERR_FORM_SIZE == $this->value['error']) {
                foreach ($this->getDataSources() as $ds) {
                    if ($ds instanceof HTML_QuickForm2_DataSource_Submit) {
                        $size = intval($ds->getValue('MAX_FILE_SIZE'));
                        break;
                    }
                }
            }
            $this->error = isset($size)? sprintf($errorMessage, $size): $errorMessage;
            return false;
        }
        return parent::validate();
    }

public function addFilter($callback, array $options = array())
    {
        throw new HTML_QuickForm2_Exception(
            'InputFile elements do not support filters'
        );
    }

public function addRecursiveFilter($callback, array $options = array())
    {
        throw new HTML_QuickForm2_Exception(
            'InputFile elements do not support filters'
        );
    }
}
?>

Editing: InputFile.php

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