<?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 File Helpers * * @package CodeIgniter * @subpackage Helpers * @category Helpers * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/helpers/file_helpers.html */ // ------------------------------------------------------------------------ /** * Read File * * Opens the file specfied in the path and returns it as a string. * * @access public * @param string path to file * @return string */ if ( ! function_exists('read_file')) { function read_file($file) { if ( ! file_exists($file)) { return FALSE; } if (function_exists('file_get_contents')) { return file_get_contents($file); } if ( ! $fp = @fopen($file, FOPEN_READ)) { return FALSE; } flock($fp, LOCK_SH); $data = ''; if (filesize($file) > 0) { $data =& fread($fp, filesize($file)); } flock($fp, LOCK_UN); fclose($fp); return $data; } } // ------------------------------------------------------------------------ /** * Write File * * Writes data to the file specified in the path. * Creates a new file if non-existent. * * @access public * @param string path to file * @param string file data * @return bool */ if ( ! function_exists('write_file')) { function write_file($path, $data, $mode = FOPEN_WRITE_CREATE_DESTRUCTIVE) { if ( ! $fp = @fopen($path, $mode)) { return FALSE; } flock($fp, LOCK_EX); fwrite($fp, $data); flock($fp, LOCK_UN); fclose($fp); return TRUE; } } // ------------------------------------------------------------------------ /** * Delete Files * * Deletes all files contained in the supplied directory path. * Files must be writable or owned by the system in order to be deleted. * If the second parameter is set to TRUE, any directories contained * within the supplied base directory will be nuked as well. * * @access public * @param string path to file * @param bool whether to delete any directories found in the path * @return bool */ if ( ! function_exists('delete_files')) { function delete_files($path, $del_dir = FALSE, $level = 0) { // Trim the trailing slash $path = rtrim($path, DIRECTORY_SEPARATOR); if ( ! $current_dir = @opendir($path)) { return FALSE; } while (FALSE !== ($filename = @readdir($current_dir))) { if ($filename != "." and $filename != "..") { if (is_dir($path.DIRECTORY_SEPARATOR.$filename)) { // Ignore empty folders if (substr($filename, 0, 1) != '.') { delete_files($path.DIRECTORY_SEPARATOR.$filename, $del_dir, $level + 1); } } else { unlink($path.DIRECTORY_SEPARATOR.$filename); } } } @closedir($current_dir); if ($del_dir == TRUE AND $level > 0) { return @rmdir($path); } return TRUE; } } // ------------------------------------------------------------------------ /** * Get Filenames * * Reads the specified directory and builds an array containing the filenames. * Any sub-folders contained within the specified path are read as well. * * @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 */ if ( ! function_exists('get_filenames')) { function get_filenames($source_dir, $include_path = FALSE, $_recursion = FALSE) { static $_filedata = array(); if ($fp = @opendir($source_dir)) { // reset the array and make sure $source_dir has a trailing slash on the initial call if ($_recursion === FALSE) { $_filedata = array(); $source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR; } while (FALSE !== ($file = readdir($fp))) { if (@is_dir($source_dir.$file) && strncmp($file, '.', 1) !== 0) { get_filenames($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE); } elseif (strncmp($file, '.', 1) !== 0) { $_filedata[] = ($include_path == TRUE) ? $source_dir.$file : $file; } } return $_filedata; } else { return FALSE; } } } // -------------------------------------------------------------------- /** * Get Directory File Information * * Reads the specified directory and builds an array containing the filenames, * filesize, dates, and permissions * * Any sub-folders contained within the specified path are read as well. * * @access public * @param string path to source * @param bool Look only at the top level directory specified? * @param bool internal variable to determine recursion status - do not use in calls * @return array */ if ( ! function_exists('get_dir_file_info')) { function get_dir_file_info($source_dir, $top_level_only = TRUE, $_recursion = FALSE) { static $_filedata = array(); $relative_path = $source_dir; if ($fp = @opendir($source_dir)) { // reset the array and make sure $source_dir has a trailing slash on the initial call if ($_recursion === FALSE) { $_filedata = array(); $source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR; } // foreach (scandir($source_dir, 1) as $file) // In addition to being PHP5+, scandir() is simply not as fast while (FALSE !== ($file = readdir($fp))) { if (@is_dir($source_dir.$file) AND strncmp($file, '.', 1) !== 0 AND $top_level_only === FALSE) { get_dir_file_info($source_dir.$file.DIRECTORY_SEPARATOR, $top_level_only, TRUE); } elseif (strncmp($file, '.', 1) !== 0) { $_filedata[$file] = get_file_info($source_dir.$file); $_filedata[$file]['relative_path'] = $relative_path; } } return $_filedata; } else { return FALSE; } } } // -------------------------------------------------------------------- /** * Get File Info * * Given a file and path, returns the name, path, size, date modified * Second parameter allows you to explicitly declare what information you want returned * Options are: name, server_path, size, date, readable, writable, executable, fileperms * Returns FALSE if the file cannot be found. * * @access public * @param string path to file * @param mixed array or comma separated string of information returned * @return array */ if ( ! function_exists('get_file_info')) { function get_file_info($file, $returned_values = array('name', 'server_path', 'size', 'date')) { if ( ! file_exists($file)) { return FALSE; } if (is_string($returned_values)) { $returned_values = explode(',', $returned_values); } foreach ($returned_values as $key) { switch ($key) { case 'name': $fileinfo['name'] = substr(strrchr($file, DIRECTORY_SEPARATOR), 1); break; case 'server_path': $fileinfo['server_path'] = $file; break; case 'size': $fileinfo['size'] = filesize($file); break; case 'date': $fileinfo['date'] = filemtime($file); break; case 'readable': $fileinfo['readable'] = is_readable($file); break; case 'writable': // There are known problems using is_weritable on IIS. It may not be reliable - consider fileperms() $fileinfo['writable'] = is_writable($file); break; case 'executable': $fileinfo['executable'] = is_executable($file); break; case 'fileperms': $fileinfo['fileperms'] = fileperms($file); 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) { $extension = strtolower(substr(strrchr($file, '.'), 1)); global $mimes; if ( ! is_array($mimes)) { if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes.php')) { include(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'); } elseif (is_file(APPPATH.'config/mimes.php')) { include(APPPATH.'config/mimes.php'); } if ( ! is_array($mimes)) { return FALSE; } } if (array_key_exists($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 */ SIMPAN PERUBAHAN