| <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
|
| /**
|
| * CodeIgniter
|
| *
|
| * An open source application development framework for PHP 4.3.2 or newer
|
| *
|
| * @package CodeIgniter
|
| * @author ExpressionEngine Dev Team
|
| * @copyright Copyright (c) 2006, EllisLab, Inc.
|
| * @license http://codeigniter.com/user_guide/license.html
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| * @link http://codeigniter.com
|
| * @since Version 1.0
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| * @filesource
|
| */
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
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| * CodeIgniter File Helpers
|
| *
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| * @package CodeIgniter
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| * @subpackage Helpers
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| * @category Helpers
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| * @author ExpressionEngine Dev Team
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| * @link http://codeigniter.com/user_guide/helpers/file_helper.html
|
| */
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
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| * Read File
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| *
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| * Opens the file specfied in the path and returns it as a string.
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| *
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| * @access public
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| * @param string path to file
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| * @return string
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| */
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| if (! function_exists('read_file'))
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| {
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| function read_file($file)
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| {
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| if (! file_exists($file))
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| {
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| return FALSE;
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| }
|
|
|
| if (function_exists('file_get_contents'))
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| {
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| return file_get_contents($file);
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| }
|
|
|
| if (! $fp = @fopen($file, FOPEN_READ))
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| {
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| return FALSE;
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| }
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|
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| flock($fp, LOCK_SH);
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|
|
| $data = '';
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| if (filesize($file) > 0)
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| {
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| $data =& fread($fp, filesize($file));
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| }
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|
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| flock($fp, LOCK_UN);
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| fclose($fp);
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|
|
| return $data;
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| }
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| }
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
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| * Write File
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| *
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| * Writes data to the file specified in the path.
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| * Creates a new file if non-existent.
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| *
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| * @access public
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| * @param string path to file
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| * @param string file data
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| * @return bool
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| */
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| if (! function_exists('write_file'))
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| {
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| function write_file($path, $data, $mode = FOPEN_WRITE_CREATE_DESTRUCTIVE)
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| {
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| if (! $fp = fopen($path, $mode))
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| {
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| return FALSE;
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| }
|
|
|
| flock($fp, LOCK_EX);
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| fwrite($fp, $data);
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| flock($fp, LOCK_UN);
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| fclose($fp);
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|
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| return TRUE;
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| }
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| }
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
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| * Delete Files
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| *
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| * Deletes all files contained in the supplied directory path.
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| * Files must be writable or owned by the system in order to be deleted.
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| * If the second parameter is set to TRUE, any directories contained
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| * within the supplied base directory will be nuked as well.
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| *
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| * @access public
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| * @param string path to file
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| * @param bool whether to delete any directories found in the path
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| * @return bool
|
| */
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| if (! function_exists('delete_files'))
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| {
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| function delete_files($path, $del_dir = FALSE, $level = 0)
|
| {
|
| // Trim the trailing slash
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| $path = preg_replace("|^(.+?)/*$|", "\\1", $path);
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|
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| if (! $current_dir = @opendir($path))
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| return;
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|
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| while(FALSE !== ($filename = @readdir($current_dir)))
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| {
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| if ($filename != "." and $filename != "..")
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| {
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| if (is_dir($path.'/'.$filename))
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| {
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| delete_files($path.'/'.$filename, $del_dir, $level + 1);
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| }
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| else
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| {
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| unlink($path.'/'.$filename);
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| }
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| }
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| }
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| @closedir($current_dir);
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|
|
| if ($del_dir == TRUE AND $level > 0)
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| {
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| @rmdir($path);
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| }
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| }
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| }
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
|
| * Get Filenames
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| *
|
| * Reads the specified directory and builds an array containing the filenames.
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| * Any sub-folders contained within the specified path are read as well.
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| *
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| * @access public
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| * @param string path to source
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| * @param bool whether to include the path as part of the filename
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| * @param bool internal variable to determine recursion status - do not use in calls
|
| * @return array
|
| */
|
| if (! function_exists('get_filenames'))
|
| {
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| function get_filenames($source_dir, $include_path = FALSE, $_recursion = FALSE)
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| {
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| static $_filedata = array();
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|
|
| if ($fp = @opendir($source_dir))
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| {
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| // reset the array and make sure $source_dir has a trailing slash on the initial call
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| if ($_recursion === FALSE)
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| {
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| $_filedata = array();
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| $source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
|
| }
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|
|
| while (FALSE !== ($file = readdir($fp)))
|
| {
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| if (@is_dir($source_dir.$file) && strncmp($file, '.', 1) !== 0)
|
| {
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| get_filenames($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE);
|
| }
|
| elseif (strncmp($file, '.', 1) !== 0)
|
| {
|
|
|
| $_filedata[] = ($include_path == TRUE) ? $source_dir.$file : $file;
|
| }
|
| }
|
| return $_filedata;
|
| }
|
| else
|
| {
|
| return FALSE;
|
| }
|
| }
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Get Directory File Information
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| *
|
| * Reads the specified directory and builds an array containing the filenames,
|
| * filesize, dates, and permissions
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| *
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| * Any sub-folders contained within the specified path are read as well.
|
| *
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| * @access public
|
| * @param string path to source
|
| * @param bool whether to include the path as part of the filename
|
| * @param bool internal variable to determine recursion status - do not use in calls
|
| * @return array
|
| */
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| if (! function_exists('get_dir_file_info'))
|
| {
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| function get_dir_file_info($source_dir, $include_path = FALSE, $_recursion = FALSE)
|
| {
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| $_filedata = array();
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| $relative_path = $source_dir;
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|
|
| if ($fp = @opendir($source_dir))
|
| {
|
| // reset the array and make sure $source_dir has a trailing slash on the initial call
|
| if ($_recursion === FALSE)
|
| {
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| $_filedata = array();
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| $source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
|
| }
|
|
|
| while (FALSE !== ($file = readdir($fp)))
|
| {
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| if (@is_dir($source_dir.$file) && strncmp($file, '.', 1) !== 0)
|
| {
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| get_dir_file_info($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE);
|
| }
|
| elseif (strncmp($file, '.', 1) !== 0)
|
| {
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| $_filedata[$file] = get_file_info($source_dir.$file);
|
| $_filedata[$file]['relative_path'] = $relative_path;
|
| }
|
| }
|
| return $_filedata;
|
| }
|
| else
|
| {
|
| return FALSE;
|
| }
|
| }
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Get File Info
|
| *
|
| * Given a file and path, returns the name, path, size, date modified
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| * Second parameter allows you to explicitly declare what information you want returned
|
| * Options are: name, server_path, size, date, readable, writable, executable, fileperms
|
| * Returns FALSE if the file cannot be found.
|
| *
|
| * @access public
|
| * @param string path to file
|
| * @param mixed array or comma separated string of information returned
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| * @return array
|
| */
|
| if (! function_exists('get_file_info'))
|
| {
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| function get_file_info($file, $returned_values = array('name', 'server_path', 'size', 'date'))
|
| {
|
|
|
| if (! file_exists($file))
|
| {
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| return FALSE;
|
| }
|
|
|
| if (is_string($returned_values))
|
| {
|
| $returned_values = explode(',', $returned_values);
|
| }
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|
|
| foreach ($returned_values as $key)
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| {
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| switch ($key)
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| {
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| case 'name':
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| $fileinfo['name'] = substr(strrchr($file, '/'), 1);
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| break;
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| case 'server_path':
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| $fileinfo['server_path'] = $file;
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| break;
|
| case 'size':
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| $fileinfo['size'] = filesize($file);
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| break;
|
| case 'date':
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| $fileinfo['date'] = filectime($file);
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| break;
|
| case 'readable':
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| $fileinfo['readable'] = is_readable($file);
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| break;
|
| case 'writable':
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| // There are known problems using is_weritable on IIS. It may not be reliable - consider fileperms()
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| $fileinfo['writable'] = is_writable($file);
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| break;
|
| case 'executable':
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| $fileinfo['executable'] = is_executable($file);
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| break;
|
| case 'fileperms':
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| $fileinfo['fileperms'] = fileperms($file);
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| break;
|
| }
|
| }
|
|
|
| return $fileinfo;
|
| }
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Get Mime by Extension
|
| *
|
| * Translates a file extension into a mime type based on config/mimes.php.
|
| * Returns FALSE if it can't determine the type, or open the mime config file
|
| *
|
| * Note: this is NOT an accurate way of determining file mime types, and is here strictly as a convenience
|
| * It should NOT be trusted, and should certainly NOT be used for security
|
| *
|
| * @access public
|
| * @param string path to file
|
| * @return mixed
|
| */
|
| if (! function_exists('get_mime_by_extension'))
|
| {
|
| function get_mime_by_extension($file)
|
| {
|
| $extension = substr(strrchr($file, '.'), 1);
|
|
|
| global $mimes;
|
|
|
| if (! is_array($mimes))
|
| {
|
| if (! require_once(APPPATH.'config/mimes.php'))
|
| {
|
| return FALSE;
|
| }
|
| }
|
|
|
| if (array_key_exists($extension, $mimes))
|
| {
|
| if (is_array($mimes[$extension]))
|
| {
|
| // Multiple mime types, just give the first one
|
| return current($mimes[$extension]);
|
| }
|
| else
|
| {
|
| return $mimes[$extension];
|
| }
|
| }
|
| else
|
| {
|
| return FALSE;
|
| }
|
| }
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Symbolic Permissions
|
| *
|
| * Takes a numeric value representing a file's permissions and returns
|
| * standard symbolic notation representing that value
|
| *
|
| * @access public
|
| * @param int
|
| * @return string
|
| */
|
| if (! function_exists('symbolic_permissions'))
|
| {
|
| function symbolic_permissions($perms)
|
| {
|
| if (($perms & 0xC000) == 0xC000)
|
| {
|
| $symbolic = 's'; // Socket
|
| }
|
| elseif (($perms & 0xA000) == 0xA000)
|
| {
|
| $symbolic = 'l'; // Symbolic Link
|
| }
|
| elseif (($perms & 0x8000) == 0x8000)
|
| {
|
| $symbolic = '-'; // Regular
|
| }
|
| elseif (($perms & 0x6000) == 0x6000)
|
| {
|
| $symbolic = 'b'; // Block special
|
| }
|
| elseif (($perms & 0x4000) == 0x4000)
|
| {
|
| $symbolic = 'd'; // Directory
|
| }
|
| elseif (($perms & 0x2000) == 0x2000)
|
| {
|
| $symbolic = 'c'; // Character special
|
| }
|
| elseif (($perms & 0x1000) == 0x1000)
|
| {
|
| $symbolic = 'p'; // FIFO pipe
|
| }
|
| else
|
| {
|
| $symbolic = 'u'; // Unknown
|
| }
|
|
|
| // Owner
|
| $symbolic .= (($perms & 0x0100) ? 'r' : '-');
|
| $symbolic .= (($perms & 0x0080) ? 'w' : '-');
|
| $symbolic .= (($perms & 0x0040) ? (($perms & 0x0800) ? 's' : 'x' ) : (($perms & 0x0800) ? 'S' : '-'));
|
|
|
| // Group
|
| $symbolic .= (($perms & 0x0020) ? 'r' : '-');
|
| $symbolic .= (($perms & 0x0010) ? 'w' : '-');
|
| $symbolic .= (($perms & 0x0008) ? (($perms & 0x0400) ? 's' : 'x' ) : (($perms & 0x0400) ? 'S' : '-'));
|
|
|
| // World
|
| $symbolic .= (($perms & 0x0004) ? 'r' : '-');
|
| $symbolic .= (($perms & 0x0002) ? 'w' : '-');
|
| $symbolic .= (($perms & 0x0001) ? (($perms & 0x0200) ? 't' : 'x' ) : (($perms & 0x0200) ? 'T' : '-'));
|
|
|
| return $symbolic;
|
| }
|
| }
|
|
|
| // --------------------------------------------------------------------
|
|
|
| /**
|
| * Octal Permissions
|
| *
|
| * Takes a numeric value representing a file's permissions and returns
|
| * a three character string representing the file's octal permissions
|
| *
|
| * @access public
|
| * @param int
|
| * @return string
|
| */
|
| if (! function_exists('octal_permissions'))
|
| {
|
| function octal_permissions($perms)
|
| {
|
| return substr(sprintf('%o', $perms), -3);
|
| }
|
| }
|
|
|
| |
| /* End of file file_helper.php */ |
| /* Location: ./system/helpers/file_helper.php */ |