diff options
Diffstat (limited to 'system/libraries/Zip.php')
| -rw-r--r-- | system/libraries/Zip.php | 222 |
1 files changed, 127 insertions, 95 deletions
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php index 666327d5c..5c4c257f8 100644 --- a/system/libraries/Zip.php +++ b/system/libraries/Zip.php @@ -1,20 +1,30 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * - * An open source application development framework for PHP 5.1.6 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @author EllisLab Dev Team + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 1.0 * @filesource */ -// ------------------------------------------------------------------------ - /** * Zip Compression Class * @@ -27,26 +37,62 @@ * @package CodeIgniter * @subpackage Libraries * @category Encryption - * @author ExpressionEngine Dev Team + * @author EllisLab Dev Team * @link http://codeigniter.com/user_guide/libraries/zip.html */ -class CI_Zip { +class CI_Zip { + + /** + * Zip data in string form + * + * @var string + */ + public $zipdata = ''; + + /** + * Zip data for a directory in string form + * + * @var string + */ + public $directory = ''; - var $zipdata = ''; - var $directory = ''; - var $entries = 0; - var $file_num = 0; - var $offset = 0; - var $now; + /** + * Number of files/folder in zip file + * + * @var int + */ + public $entries = 0; + + /** + * Number of files in zip + * + * @var int + */ + public $file_num = 0; + + /** + * relative offset of local header + * + * @var int + */ + public $offset = 0; /** - * Constructor + * Reference to time at init + * + * @var int + */ + public $now; + + /** + * Initialize zip compression class + * + * @return void */ public function __construct() { - log_message('debug', "Zip Compression Class Initialized"); - $this->now = time(); + log_message('debug', 'Zip Compression Class Initialized'); } // -------------------------------------------------------------------- @@ -56,21 +102,19 @@ class CI_Zip { * * Lets you add a virtual directory into which you can place files. * - * @access public * @param mixed the directory name. Can be string or array * @return void */ - function add_dir($directory) + public function add_dir($directory) { - foreach ((array)$directory as $dir) + foreach ( (array) $directory as $dir) { - if ( ! preg_match("|.+/$|", $dir)) + if ( ! preg_match('|.+/$|', $dir)) { $dir .= '/'; } $dir_time = $this->_get_mod_time($dir); - $this->_add_dir($dir, $dir_time['file_mtime'], $dir_time['file_mdate']); } } @@ -78,22 +122,22 @@ class CI_Zip { // -------------------------------------------------------------------- /** - * Get file/directory modification time + * Get file/directory modification time * - * If this is a newly created file/dir, we will set the time to 'now' + * If this is a newly created file/dir, we will set the time to 'now' * - * @param string path to file - * @return array filemtime/filemdate + * @param string path to file + * @return array filemtime/filemdate */ - function _get_mod_time($dir) + protected function _get_mod_time($dir) { - // filemtime() will return false, but it does raise an error. - $date = (@filemtime($dir)) ? filemtime($dir) : getdate($this->now); - - $time['file_mtime'] = ($date['hours'] << 11) + ($date['minutes'] << 5) + $date['seconds'] / 2; - $time['file_mdate'] = (($date['year'] - 1980) << 9) + ($date['mon'] << 5) + $date['mday']; + // filemtime() may return false, but raises an error for non-existing files + $date = file_exists($dir) ? filemtime($dir) : getdate($this->now); - return $time; + return array( + 'file_mtime' => ($date['hours'] << 11) + ($date['minutes'] << 5) + $date['seconds'] / 2, + 'file_mdate' => (($date['year'] - 1980) << 9) + ($date['mon'] << 5) + $date['mday'] + ); } // -------------------------------------------------------------------- @@ -101,13 +145,14 @@ class CI_Zip { /** * Add Directory * - * @access private * @param string the directory name + * @param int + * @param int * @return void */ - function _add_dir($dir, $file_mtime, $file_mdate) + protected function _add_dir($dir, $file_mtime, $file_mdate) { - $dir = str_replace("\\", "/", $dir); + $dir = str_replace('\\', '/', $dir); $this->zipdata .= "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00" @@ -150,29 +195,26 @@ class CI_Zip { * Add Data to Zip * * Lets you add files to the archive. If the path is included - * in the filename it will be placed within a directory. Make + * in the filename it will be placed within a directory. Make * sure you use add_dir() first to create the folder. * - * @access public * @param mixed * @param string * @return void */ - function add_data($filepath, $data = NULL) + public function add_data($filepath, $data = NULL) { if (is_array($filepath)) { foreach ($filepath as $path => $data) { $file_data = $this->_get_mod_time($path); - $this->_add_data($path, $data, $file_data['file_mtime'], $file_data['file_mdate']); } } else { $file_data = $this->_get_mod_time($filepath); - $this->_add_data($filepath, $data, $file_data['file_mtime'], $file_data['file_mdate']); } } @@ -182,20 +224,19 @@ class CI_Zip { /** * Add Data to Zip * - * @access private * @param string the file name/path * @param string the data to be encoded + * @param int + * @param int * @return void */ - function _add_data($filepath, $data, $file_mtime, $file_mdate) + protected function _add_data($filepath, $data, $file_mtime, $file_mdate) { - $filepath = str_replace("\\", "/", $filepath); + $filepath = str_replace('\\', '/', $filepath); $uncompressed_size = strlen($data); $crc32 = crc32($data); - - $gzdata = gzcompress($data); - $gzdata = substr($gzdata, 2, -4); + $gzdata = substr(gzcompress($data), 2, -4); $compressed_size = strlen($gzdata); $this->zipdata .= @@ -236,10 +277,11 @@ class CI_Zip { /** * Read the contents of a file and add it to the zip * - * @access public + * @param string + * @param bool * @return bool */ - function read_file($path, $preserve_filepath = FALSE) + public function read_file($path, $preserve_filepath = FALSE) { if ( ! file_exists($path)) { @@ -248,16 +290,16 @@ class CI_Zip { if (FALSE !== ($data = file_get_contents($path))) { - $name = str_replace("\\", "/", $path); - + $name = str_replace('\\', '/', $path); if ($preserve_filepath === FALSE) { - $name = preg_replace("|.*/(.+)|", "\\1", $name); + $name = preg_replace('|.*/(.+)|', '\\1', $name); } $this->add_data($name, $data); return TRUE; } + return FALSE; } @@ -267,15 +309,17 @@ class CI_Zip { * Read a directory and add it to the zip. * * This function recursively reads a folder and everything it contains (including - * sub-folders) and creates a zip based on it. Whatever directory structure + * sub-folders) and creates a zip based on it. Whatever directory structure * is in the original file path will be recreated in the zip file. * - * @access public * @param string path to source + * @param bool + * @param bool * @return bool */ - function read_dir($path, $preserve_filepath = TRUE, $root_path = NULL) + public function read_dir($path, $preserve_filepath = TRUE, $root_path = NULL) { + $path = rtrim($path, '/\\').DIRECTORY_SEPARATOR; if ( ! $fp = @opendir($path)) { return FALSE; @@ -284,36 +328,32 @@ class CI_Zip { // Set the original directory root for child dir's to use as relative if ($root_path === NULL) { - $root_path = dirname($path).'/'; + $root_path = dirname($path).DIRECTORY_SEPARATOR; } while (FALSE !== ($file = readdir($fp))) { - if (substr($file, 0, 1) == '.') + if ($file[0] === '.') { continue; } if (@is_dir($path.$file)) { - $this->read_dir($path.$file."/", $preserve_filepath, $root_path); + $this->read_dir($path.$file.DIRECTORY_SEPARATOR, $preserve_filepath, $root_path); } - else + elseif (FALSE !== ($data = file_get_contents($path.$file))) { - if (FALSE !== ($data = file_get_contents($path.$file))) + $name = str_replace(array('\\', '/'), DIRECTORY_SEPARATOR, $path); + if ($preserve_filepath === FALSE) { - $name = str_replace("\\", "/", $path); - - if ($preserve_filepath === FALSE) - { - $name = str_replace($root_path, '', $name); - } - - $this->add_data($name.$file, $data); + $name = str_replace($root_path, '', $name); } + $this->add_data($name.$file, $data); } } + closedir($fp); return TRUE; } @@ -322,26 +362,23 @@ class CI_Zip { /** * Get the Zip file * - * @access public - * @return binary string + * @return string (binary encoded) */ - function get_zip() + public function get_zip() { // Is there any data to return? - if ($this->entries == 0) + if ($this->entries === 0) { return FALSE; } - $zip_data = $this->zipdata; - $zip_data .= $this->directory."\x50\x4b\x05\x06\x00\x00\x00\x00"; - $zip_data .= pack('v', $this->entries); // total # of entries "on this disk" - $zip_data .= pack('v', $this->entries); // total # of entries overall - $zip_data .= pack('V', strlen($this->directory)); // size of central dir - $zip_data .= pack('V', strlen($this->zipdata)); // offset to start of central dir - $zip_data .= "\x00\x00"; // .zip file comment length - - return $zip_data; + return $this->zipdata + .$this->directory."\x50\x4b\x05\x06\x00\x00\x00\x00" + .pack('v', $this->entries) // total # of entries "on this disk" + .pack('v', $this->entries) // total # of entries overall + .pack('V', strlen($this->directory)) // size of central dir + .pack('V', strlen($this->zipdata)) // offset to start of central dir + ."\x00\x00"; // .zip file comment length } // -------------------------------------------------------------------- @@ -351,11 +388,10 @@ class CI_Zip { * * Lets you write a file * - * @access public * @param string the file name * @return bool */ - function archive($filepath) + public function archive($filepath) { if ( ! ($fp = @fopen($filepath, FOPEN_WRITE_CREATE_DESTRUCTIVE))) { @@ -375,23 +411,19 @@ class CI_Zip { /** * Download * - * @access public * @param string the file name - * @param string the data to be encoded - * @return bool + * @return void */ - function download($filename = 'backup.zip') + public function download($filename = 'backup.zip') { - if ( ! preg_match("|.+?\.zip$|", $filename)) + if ( ! preg_match('|.+?\.zip$|', $filename)) { $filename .= '.zip'; } $CI =& get_instance(); $CI->load->helper('download'); - $get_zip = $this->get_zip(); - $zip_content =& $get_zip; force_download($filename, $zip_content); @@ -402,19 +434,19 @@ class CI_Zip { /** * Initialize Data * - * Lets you clear current zip data. Useful if you need to create + * Lets you clear current zip data. Useful if you need to create * multiple zips with different data. * - * @access public - * @return void + * @return object */ - function clear_data() + public function clear_data() { $this->zipdata = ''; $this->directory = ''; $this->entries = 0; $this->file_num = 0; $this->offset = 0; + return $this; } } |