CodeIgniter installed

[living-lab-site.git] / system / helpers / download_helper.php

diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
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+++ b/system/helpers/download_helper.php
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+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package            CodeIgniter
+ * @author             ExpressionEngine Dev Team
+ * @copyright  Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license            http://codeigniter.com/user_guide/license.html
+ * @link               http://codeigniter.com
+ * @since              Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CodeIgniter Download Helpers
+ *
+ * @package            CodeIgniter
+ * @subpackage Helpers
+ * @category   Helpers
+ * @author             ExpressionEngine Dev Team
+ * @link               http://codeigniter.com/user_guide/helpers/download_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Force Download
+ *
+ * Generates headers that force a download to happen
+ *
+ * @access     public
+ * @param      string  filename
+ * @param      mixed   the data to be downloaded
+ * @return     void
+ */
+if ( ! function_exists('force_download'))
+{
+       function force_download($filename = '', $data = '')
+       {
+               if ($filename == '' OR $data == '')
+               {
+                       return FALSE;
+               }
+
+               // Try to determine if the filename includes a file extension.
+               // We need it in order to set the MIME type
+               if (FALSE === strpos($filename, '.'))
+               {
+                       return FALSE;
+               }
+
+               // Grab the file extension
+               $x = explode('.', $filename);
+               $extension = end($x);
+
+               // Load the mime types
+               if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes'.EXT))
+               {
+                       include(APPPATH.'config/'.ENVIRONMENT.'/mimes'.EXT);
+               }
+               elseif (is_file(APPPATH.'config/mimes'.EXT))
+               {
+                       include(APPPATH.'config/mimes'.EXT);
+               }
+
+               // Set a default mime if we can't find it
+               if ( ! isset($mimes[$extension]))
+               {
+                       $mime = 'application/octet-stream';
+               }
+               else
+               {
+                       $mime = (is_array($mimes[$extension])) ? $mimes[$extension][0] : $mimes[$extension];
+               }
+
+               // Generate the server headers
+               if (strpos($_SERVER['HTTP_USER_AGENT'], "MSIE") !== FALSE)
+               {
+                       header('Content-Type: "'.$mime.'"');
+                       header('Content-Disposition: attachment; filename="'.$filename.'"');
+                       header('Expires: 0');
+                       header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
+                       header("Content-Transfer-Encoding: binary");
+                       header('Pragma: public');
+                       header("Content-Length: ".strlen($data));
+               }
+               else
+               {
+                       header('Content-Type: "'.$mime.'"');
+                       header('Content-Disposition: attachment; filename="'.$filename.'"');
+                       header("Content-Transfer-Encoding: binary");
+                       header('Expires: 0');
+                       header('Pragma: no-cache');
+                       header("Content-Length: ".strlen($data));
+               }
+
+               exit($data);
+       }
+}
+
+
+/* End of file download_helper.php */
+/* Location: ./system/helpers/download_helper.php */
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