freenetis-github/system/libraries/drivers/Archive/Zip.php @ 04ef9c6e
| 8baed187 | Michal Kliment | <?php defined('SYSPATH') or die('No direct script access.');
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/**
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* Archive library zip driver.
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*
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* $Id: Zip.php 1924 2008-02-05 16:39:20Z Shadowhand $
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*
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* @package Cache
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class Archive_Zip_Driver implements Archive_Driver {
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// Compiled directory structure
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protected $dirs = '';
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// Compiled archive data
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protected $data = '';
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// Offset location
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protected $offset = 0;
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public function create($paths, $filename = FALSE)
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{
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// Sort the paths to make sure that directories come before files
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sort($paths);
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foreach ($paths as $set)
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{
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// Add each path individually
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$this->add_data($set[0], $set[1], isset($set[2]) ? $set[2] : NULL);
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}
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// File data
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$data = implode('', $this->data);
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// Directory data
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$dirs = implode('', $this->dirs);
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$zipfile =
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$data. // File data
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$dirs. // Directory data
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"\x50\x4b\x05\x06\x00\x00\x00\x00". // Directory EOF
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pack('v', count($this->dirs)). // Total number of entries "on disk"
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pack('v', count($this->dirs)). // Total number of entries in file
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pack('V', strlen($dirs)). // Size of directories
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pack('V', strlen($data)). // Offset to directories
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"\x00\x00"; // Zip comment length
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if ($filename == FALSE)
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{
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return $zipfile;
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}
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if (substr($filename, -3) != 'zip')
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{
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// Append zip extension
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$filename .= '.zip';
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}
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// Create the file in binary write mode
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$file = fopen($filename, 'wb');
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// Lock the file
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flock($file, LOCK_EX);
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// Write the zip file
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$return = fwrite($file, $zipfile);
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// Unlock the file
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flock($file, LOCK_UN);
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// Close the file
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fclose($file);
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return (bool) $return;
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}
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public function add_data($file, $name, $contents = NULL)
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{
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// Determine the file type: 16 = dir, 32 = file
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$type = (substr($file, -1) === '/') ? 16 : 32;
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// Fetch the timestamp, using the current time if manually setting the contents
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$timestamp = date::unix2dos(($contents === NULL) ? filemtime($file) : time());
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// Read the file or use the defined contents
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$data = ($contents === NULL) ? file_get_contents($file) : $contents;
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// Gzip the data, use substr to fix a CRC bug
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$zdata = substr(gzcompress($data), 2, -4);
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$this->data[] =
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"\x50\x4b\x03\x04". // Zip header
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"\x14\x00". // Version required for extraction
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"\x00\x00". // General bit flag
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"\x08\x00". // Compression method
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pack('V', $timestamp). // Last mod time and date
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pack('V', crc32($data)). // CRC32
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pack('V', strlen($zdata)).// Compressed filesize
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pack('V', strlen($data)). // Uncompressed filesize
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pack('v', strlen($name)). // Length of file name
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pack('v', 0). // Extra field length
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$name. // File name
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$zdata; // Compressed data
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$this->dirs[] =
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"\x50\x4b\x01\x02". // Zip header
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"\x00\x00". // Version made by
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"\x14\x00". // Version required for extraction
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"\x00\x00". // General bit flag
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"\x08\x00". // Compression method
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pack('V', $timestamp). // Last mod time and date
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pack('V', crc32($data)). // CRC32
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pack('V', strlen($zdata)).// Compressed filesize
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pack('V', strlen($data)). // Uncompressed filesize
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pack('v', strlen($name)). // Length of file name
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pack('v', 0). // Extra field length
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// End "local file header"
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// Start "data descriptor"
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pack('v', 0). // CRC32
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pack('v', 0). // Compressed filesize
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pack('v', 0). // Uncompressed filesize
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pack('V', $type). // File attribute type
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pack('V', $this->offset). // Directory offset
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$name; // File name
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// Set the new offset
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$this->offset = strlen(implode('', $this->data));
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}
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} // End Archive_Zip_Driver Class
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