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<?php
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/**
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* TTarFileExtractor class file
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*
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* @author Vincent Blavet <vincent@phpconcept.net>
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* @copyright Copyright © 1997-2003 The PHP Group
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* @version $Id: TTarFileExtractor.php 1637 2007-01-17 22:26:53Z xue $
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* @package System.IO
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*/
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/* vim: set ts=4 sw=4: */
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2003 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 3.0 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available through the world-wide-web at the following url: |
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// | http://www.php.net/license/3_0.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Author: Vincent Blavet <vincent@phpconcept.net> |
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// +----------------------------------------------------------------------+
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//
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// $Id: TTarFileExtractor.php 1637 2007-01-17 22:26:53Z xue $
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/**
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* TTarFileExtractor class
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*
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* @author Vincent Blavet <vincent@phpconcept.net>
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* @version $Id: TTarFileExtractor.php 1637 2007-01-17 22:26:53Z xue $
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* @package System.IO
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* @since 3.0
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*/
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class TTarFileExtractor
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{
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/**
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* @var string Name of the Tar
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*/
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private $_tarname='';
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/**
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* @var file descriptor
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*/
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private $_file=0;
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/**
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* @var string Local Tar name of a remote Tar (http:// or ftp://)
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*/
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private $_temp_tarname='';
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/**
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* Archive_Tar Class constructor. This flavour of the constructor only
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* declare a new Archive_Tar object, identifying it by the name of the
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* tar file.
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*
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* @param string $p_tarname The name of the tar archive to create
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* @access public
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*/
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public function __construct($p_tarname)
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{
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$this->_tarname = $p_tarname;
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}
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public function __destruct()
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{
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$this->_close();
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// ----- Look for a local copy to delete
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if ($this->_temp_tarname != '')
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@unlink($this->_temp_tarname);
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}
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public function extract($p_path='')
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{
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return $this->extractModify($p_path, '');
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}
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/**
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* This method extract all the content of the archive in the directory
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* indicated by $p_path. When relevant the memorized path of the
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* files/dir can be modified by removing the $p_remove_path path at the
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* beginning of the file/dir path.
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* While extracting a file, if the directory path does not exists it is
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* created.
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* While extracting a file, if the file already exists it is replaced
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* without looking for last modification date.
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* While extracting a file, if the file already exists and is write
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* protected, the extraction is aborted.
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* While extracting a file, if a directory with the same name already
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* exists, the extraction is aborted.
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* While extracting a directory, if a file with the same name already
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* exists, the extraction is aborted.
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* While extracting a file/directory if the destination directory exist
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* and is write protected, or does not exist but can not be created,
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* the extraction is aborted.
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* If after extraction an extracted file does not show the correct
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* stored file size, the extraction is aborted.
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* When the extraction is aborted, a PEAR error text is set and false
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* is returned. However the result can be a partial extraction that may
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* need to be manually cleaned.
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*
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* @param string $p_path The path of the directory where the
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* files/dir need to by extracted.
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* @param string $p_remove_path Part of the memorized path that can be
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* removed if present at the beginning of
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* the file/dir path.
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* @return boolean true on success, false on error.
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* @access public
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*/
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protected function extractModify($p_path, $p_remove_path)
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{
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$v_result = true;
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$v_list_detail = array();
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if ($v_result = $this->_openRead()) {
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$v_result = $this->_extractList($p_path, $v_list_detail,
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"complete", 0, $p_remove_path);
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$this->_close();
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}
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return $v_result;
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}
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protected function _error($p_message)
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{
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throw new Exception($p_message);
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}
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private function _isArchive($p_filename=null)
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{
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if ($p_filename == null) {
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$p_filename = $this->_tarname;
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}
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clearstatcache();
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return @is_file($p_filename);
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}
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private function _openRead()
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{
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if (strtolower(substr($this->_tarname, 0, 7)) == 'http://') {
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// ----- Look if a local copy need to be done
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if ($this->_temp_tarname == '') {
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$this->_temp_tarname = uniqid('tar').'.tmp';
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if (!$v_file_from = @fopen($this->_tarname, 'rb')) {
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$this->_error('Unable to open in read mode \''
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.$this->_tarname.'\'');
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$this->_temp_tarname = '';
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return false;
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}
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if (!$v_file_to = @fopen($this->_temp_tarname, 'wb')) {
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$this->_error('Unable to open in write mode \''
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.$this->_temp_tarname.'\'');
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$this->_temp_tarname = '';
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return false;
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}
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while ($v_data = @fread($v_file_from, 1024))
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@fwrite($v_file_to, $v_data);
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@fclose($v_file_from);
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@fclose($v_file_to);
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}
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// ----- File to open if the local copy
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$v_filename = $this->_temp_tarname;
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} else
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// ----- File to open if the normal Tar file
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$v_filename = $this->_tarname;
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$this->_file = @fopen($v_filename, "rb");
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if ($this->_file == 0) {
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$this->_error('Unable to open in read mode \''.$v_filename.'\'');
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return false;
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}
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return true;
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}
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private function _close()
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{
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//if (isset($this->_file)) {
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if (is_resource($this->_file))
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{
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@fclose($this->_file);
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$this->_file = 0;
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}
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// ----- Look if a local copy need to be erase
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// Note that it might be interesting to keep the url for a time : ToDo
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if ($this->_temp_tarname != '') {
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@unlink($this->_temp_tarname);
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$this->_temp_tarname = '';
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}
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return true;
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}
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private function _cleanFile()
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{
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$this->_close();
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// ----- Look for a local copy
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if ($this->_temp_tarname != '') {
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// ----- Remove the local copy but not the remote tarname
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@unlink($this->_temp_tarname);
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$this->_temp_tarname = '';
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} else {
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// ----- Remove the local tarname file
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@unlink($this->_tarname);
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}
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$this->_tarname = '';
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return true;
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}
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private function _readBlock()
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{
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$v_block = null;
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if (is_resource($this->_file)) {
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$v_block = @fread($this->_file, 512);
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}
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return $v_block;
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}
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private function _jumpBlock($p_len=null)
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{
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if (is_resource($this->_file)) {
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if ($p_len === null)
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$p_len = 1;
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@fseek($this->_file, @ftell($this->_file)+($p_len*512));
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}
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return true;
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}
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private function _readHeader($v_binary_data, &$v_header)
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{
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if (strlen($v_binary_data)==0) {
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$v_header['filename'] = '';
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return true;
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}
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if (strlen($v_binary_data) != 512) {
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$v_header['filename'] = '';
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$this->_error('Invalid block size : '.strlen($v_binary_data));
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return false;
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}
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// ----- Calculate the checksum
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$v_checksum = 0;
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// ..... First part of the header
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for ($i=0; $i<148; $i++)
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$v_checksum+=ord(substr($v_binary_data,$i,1));
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// ..... Ignore the checksum value and replace it by ' ' (space)
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for ($i=148; $i<156; $i++)
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$v_checksum += ord(' ');
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// ..... Last part of the header
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for ($i=156; $i<512; $i++)
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$v_checksum+=ord(substr($v_binary_data,$i,1));
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$v_data = unpack("a100filename/a8mode/a8uid/a8gid/a12size/a12mtime/"
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."a8checksum/a1typeflag/a100link/a6magic/a2version/"
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."a32uname/a32gname/a8devmajor/a8devminor",
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$v_binary_data);
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// ----- Extract the checksum
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$v_header['checksum'] = OctDec(trim($v_data['checksum']));
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if ($v_header['checksum'] != $v_checksum) {
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$v_header['filename'] = '';
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// ----- Look for last block (empty block)
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if (($v_checksum == 256) && ($v_header['checksum'] == 0))
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return true;
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$this->_error('Invalid checksum for file "'.$v_data['filename']
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.'" : '.$v_checksum.' calculated, '
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.$v_header['checksum'].' expected');
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return false;
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}
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// ----- Extract the properties
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$v_header['filename'] = trim($v_data['filename']);
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$v_header['mode'] = OctDec(trim($v_data['mode']));
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$v_header['uid'] = OctDec(trim($v_data['uid']));
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$v_header['gid'] = OctDec(trim($v_data['gid']));
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$v_header['size'] = OctDec(trim($v_data['size']));
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$v_header['mtime'] = OctDec(trim($v_data['mtime']));
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if (($v_header['typeflag'] = $v_data['typeflag']) == "5") {
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$v_header['size'] = 0;
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}
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return true;
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}
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private function _readLongHeader(&$v_header)
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{
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$v_filename = '';
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$n = floor($v_header['size']/512);
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for ($i=0; $i<$n; $i++) {
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$v_content = $this->_readBlock();
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$v_filename .= $v_content;
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}
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if (($v_header['size'] % 512) != 0) {
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$v_content = $this->_readBlock();
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$v_filename .= $v_content;
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}
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// ----- Read the next header
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$v_binary_data = $this->_readBlock();
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if (!$this->_readHeader($v_binary_data, $v_header))
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return false;
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$v_header['filename'] = $v_filename;
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return true;
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}
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protected function _extractList($p_path, &$p_list_detail, $p_mode,
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$p_file_list, $p_remove_path)
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324 |
{
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$v_result=true;
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$v_nb = 0;
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$v_extract_all = true;
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$v_listing = false;
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$p_path = $this->_translateWinPath($p_path, false);
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if ($p_path == '' || (substr($p_path, 0, 1) != '/'
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&& substr($p_path, 0, 3) != "../" && !strpos($p_path, ':'))) {
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$p_path = "./".$p_path;
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}
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$p_remove_path = $this->_translateWinPath($p_remove_path);
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// ----- Look for path to remove format (should end by /)
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if (($p_remove_path != '') && (substr($p_remove_path, -1) != '/'))
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$p_remove_path .= '/';
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$p_remove_path_size = strlen($p_remove_path);
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switch ($p_mode) {
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case "complete" :
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$v_extract_all = true;
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$v_listing = false;
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break;
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case "partial" :
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348 |
$v_extract_all = false;
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$v_listing = false;
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break;
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case "list" :
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$v_extract_all = false;
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$v_listing = true;
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354 |
break;
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355 |
default :
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356 |
$this->_error('Invalid extract mode ('.$p_mode.')');
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357 |
return false;
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358 |
}
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359 |
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360 |
clearstatcache();
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361 |
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|
362 |
while (strlen($v_binary_data = $this->_readBlock()) != 0)
|
|
|
363 |
{
|
|
|
364 |
$v_extract_file = false;
|
|
|
365 |
$v_extraction_stopped = 0;
|
|
|
366 |
|
|
|
367 |
if (!$this->_readHeader($v_binary_data, $v_header))
|
|
|
368 |
return false;
|
|
|
369 |
|
|
|
370 |
if ($v_header['filename'] == '') {
|
|
|
371 |
continue;
|
|
|
372 |
}
|
|
|
373 |
|
|
|
374 |
// ----- Look for long filename
|
|
|
375 |
if ($v_header['typeflag'] == 'L') {
|
|
|
376 |
if (!$this->_readLongHeader($v_header))
|
|
|
377 |
return false;
|
|
|
378 |
}
|
|
|
379 |
|
|
|
380 |
if ((!$v_extract_all) && (is_array($p_file_list))) {
|
|
|
381 |
// ----- By default no unzip if the file is not found
|
|
|
382 |
$v_extract_file = false;
|
|
|
383 |
|
|
|
384 |
for ($i=0; $i<sizeof($p_file_list); $i++) {
|
|
|
385 |
// ----- Look if it is a directory
|
|
|
386 |
if (substr($p_file_list[$i], -1) == '/') {
|
|
|
387 |
// ----- Look if the directory is in the filename path
|
|
|
388 |
if ((strlen($v_header['filename']) > strlen($p_file_list[$i]))
|
|
|
389 |
&& (substr($v_header['filename'], 0, strlen($p_file_list[$i]))
|
|
|
390 |
== $p_file_list[$i])) {
|
|
|
391 |
$v_extract_file = true;
|
|
|
392 |
break;
|
|
|
393 |
}
|
|
|
394 |
}
|
|
|
395 |
|
|
|
396 |
// ----- It is a file, so compare the file names
|
|
|
397 |
elseif ($p_file_list[$i] == $v_header['filename']) {
|
|
|
398 |
$v_extract_file = true;
|
|
|
399 |
break;
|
|
|
400 |
}
|
|
|
401 |
}
|
|
|
402 |
} else {
|
|
|
403 |
$v_extract_file = true;
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
// ----- Look if this file need to be extracted
|
|
|
407 |
if (($v_extract_file) && (!$v_listing))
|
|
|
408 |
{
|
|
|
409 |
if (($p_remove_path != '')
|
|
|
410 |
&& (substr($v_header['filename'], 0, $p_remove_path_size)
|
|
|
411 |
== $p_remove_path))
|
|
|
412 |
$v_header['filename'] = substr($v_header['filename'],
|
|
|
413 |
$p_remove_path_size);
|
|
|
414 |
if (($p_path != './') && ($p_path != '/')) {
|
|
|
415 |
while (substr($p_path, -1) == '/')
|
|
|
416 |
$p_path = substr($p_path, 0, strlen($p_path)-1);
|
|
|
417 |
|
|
|
418 |
if (substr($v_header['filename'], 0, 1) == '/')
|
|
|
419 |
$v_header['filename'] = $p_path.$v_header['filename'];
|
|
|
420 |
else
|
|
|
421 |
$v_header['filename'] = $p_path.'/'.$v_header['filename'];
|
|
|
422 |
}
|
|
|
423 |
if (file_exists($v_header['filename'])) {
|
|
|
424 |
if ( (@is_dir($v_header['filename']))
|
|
|
425 |
&& ($v_header['typeflag'] == '')) {
|
|
|
426 |
$this->_error('File '.$v_header['filename']
|
|
|
427 |
.' already exists as a directory');
|
|
|
428 |
return false;
|
|
|
429 |
}
|
|
|
430 |
if ( ($this->_isArchive($v_header['filename']))
|
|
|
431 |
&& ($v_header['typeflag'] == "5")) {
|
|
|
432 |
$this->_error('Directory '.$v_header['filename']
|
|
|
433 |
.' already exists as a file');
|
|
|
434 |
return false;
|
|
|
435 |
}
|
|
|
436 |
if (!is_writeable($v_header['filename'])) {
|
|
|
437 |
$this->_error('File '.$v_header['filename']
|
|
|
438 |
.' already exists and is write protected');
|
|
|
439 |
return false;
|
|
|
440 |
}
|
|
|
441 |
if (filemtime($v_header['filename']) > $v_header['mtime']) {
|
|
|
442 |
// To be completed : An error or silent no replace ?
|
|
|
443 |
}
|
|
|
444 |
}
|
|
|
445 |
|
|
|
446 |
// ----- Check the directory availability and create it if necessary
|
|
|
447 |
elseif (($v_result
|
|
|
448 |
= $this->_dirCheck(($v_header['typeflag'] == "5"
|
|
|
449 |
?$v_header['filename']
|
|
|
450 |
:dirname($v_header['filename'])))) != 1) {
|
|
|
451 |
$this->_error('Unable to create path for '.$v_header['filename']);
|
|
|
452 |
return false;
|
|
|
453 |
}
|
|
|
454 |
|
|
|
455 |
if ($v_extract_file) {
|
|
|
456 |
if ($v_header['typeflag'] == "5") {
|
|
|
457 |
if (!@file_exists($v_header['filename'])) {
|
|
|
458 |
if (!@mkdir($v_header['filename'], PRADO_CHMOD)) {
|
|
|
459 |
$this->_error('Unable to create directory {'
|
|
|
460 |
.$v_header['filename'].'}');
|
|
|
461 |
return false;
|
|
|
462 |
}
|
|
|
463 |
chmod($v_header['filename'], PRADO_CHMOD);
|
|
|
464 |
}
|
|
|
465 |
} else {
|
|
|
466 |
if (($v_dest_file = @fopen($v_header['filename'], "wb")) == 0) {
|
|
|
467 |
$this->_error('Error while opening {'.$v_header['filename']
|
|
|
468 |
.'} in write binary mode');
|
|
|
469 |
return false;
|
|
|
470 |
} else {
|
|
|
471 |
$n = floor($v_header['size']/512);
|
|
|
472 |
for ($i=0; $i<$n; $i++) {
|
|
|
473 |
$v_content = $this->_readBlock();
|
|
|
474 |
fwrite($v_dest_file, $v_content, 512);
|
|
|
475 |
}
|
|
|
476 |
if (($v_header['size'] % 512) != 0) {
|
|
|
477 |
$v_content = $this->_readBlock();
|
|
|
478 |
fwrite($v_dest_file, $v_content, ($v_header['size'] % 512));
|
|
|
479 |
}
|
|
|
480 |
|
|
|
481 |
@fclose($v_dest_file);
|
|
|
482 |
|
|
|
483 |
// ----- Change the file mode, mtime
|
|
|
484 |
@touch($v_header['filename'], $v_header['mtime']);
|
|
|
485 |
// To be completed
|
|
|
486 |
//chmod($v_header[filename], DecOct($v_header[mode]));
|
|
|
487 |
}
|
|
|
488 |
|
|
|
489 |
// ----- Check the file size
|
|
|
490 |
clearstatcache();
|
|
|
491 |
if (filesize($v_header['filename']) != $v_header['size']) {
|
|
|
492 |
$this->_error('Extracted file '.$v_header['filename']
|
|
|
493 |
.' does not have the correct file size \''
|
|
|
494 |
.filesize($v_header['filename'])
|
|
|
495 |
.'\' ('.$v_header['size']
|
|
|
496 |
.' expected). Archive may be corrupted.');
|
|
|
497 |
return false;
|
|
|
498 |
}
|
|
|
499 |
}
|
|
|
500 |
} else {
|
|
|
501 |
$this->_jumpBlock(ceil(($v_header['size']/512)));
|
|
|
502 |
}
|
|
|
503 |
} else {
|
|
|
504 |
$this->_jumpBlock(ceil(($v_header['size']/512)));
|
|
|
505 |
}
|
|
|
506 |
|
|
|
507 |
/* TBC : Seems to be unused ...
|
|
|
508 |
if ($this->_compress)
|
|
|
509 |
$v_end_of_file = @gzeof($this->_file);
|
|
|
510 |
else
|
|
|
511 |
$v_end_of_file = @feof($this->_file);
|
|
|
512 |
*/
|
|
|
513 |
|
|
|
514 |
if ($v_listing || $v_extract_file || $v_extraction_stopped) {
|
|
|
515 |
// ----- Log extracted files
|
|
|
516 |
if (($v_file_dir = dirname($v_header['filename']))
|
|
|
517 |
== $v_header['filename'])
|
|
|
518 |
$v_file_dir = '';
|
|
|
519 |
if ((substr($v_header['filename'], 0, 1) == '/') && ($v_file_dir == ''))
|
|
|
520 |
$v_file_dir = '/';
|
|
|
521 |
|
|
|
522 |
$p_list_detail[$v_nb++] = $v_header;
|
|
|
523 |
}
|
|
|
524 |
}
|
|
|
525 |
|
|
|
526 |
return true;
|
|
|
527 |
}
|
|
|
528 |
|
|
|
529 |
/**
|
|
|
530 |
* Check if a directory exists and create it (including parent
|
|
|
531 |
* dirs) if not.
|
|
|
532 |
*
|
|
|
533 |
* @param string $p_dir directory to check
|
|
|
534 |
*
|
|
|
535 |
* @return bool true if the directory exists or was created
|
|
|
536 |
*/
|
|
|
537 |
protected function _dirCheck($p_dir)
|
|
|
538 |
{
|
|
|
539 |
if ((@is_dir($p_dir)) || ($p_dir == ''))
|
|
|
540 |
return true;
|
|
|
541 |
|
|
|
542 |
$p_parent_dir = dirname($p_dir);
|
|
|
543 |
|
|
|
544 |
if (($p_parent_dir != $p_dir) &&
|
|
|
545 |
($p_parent_dir != '') &&
|
|
|
546 |
(!$this->_dirCheck($p_parent_dir)))
|
|
|
547 |
return false;
|
|
|
548 |
|
|
|
549 |
if (!@mkdir($p_dir, PRADO_CHMOD)) {
|
|
|
550 |
$this->_error("Unable to create directory '$p_dir'");
|
|
|
551 |
return false;
|
|
|
552 |
}
|
|
|
553 |
chmod($p_dir,PRADO_CHMOD);
|
|
|
554 |
|
|
|
555 |
return true;
|
|
|
556 |
}
|
|
|
557 |
|
|
|
558 |
protected function _translateWinPath($p_path, $p_remove_disk_letter=true)
|
|
|
559 |
{
|
|
|
560 |
if (substr(PHP_OS, 0, 3) == 'WIN') {
|
|
|
561 |
// ----- Look for potential disk letter
|
|
|
562 |
if ( ($p_remove_disk_letter)
|
|
|
563 |
&& (($v_position = strpos($p_path, ':')) != false)) {
|
|
|
564 |
$p_path = substr($p_path, $v_position+1);
|
|
|
565 |
}
|
|
|
566 |
// ----- Change potential windows directory separator
|
|
|
567 |
if ((strpos($p_path, '\\') > 0) || (substr($p_path, 0,1) == '\\')) {
|
|
|
568 |
$p_path = strtr($p_path, '\\', '/');
|
|
|
569 |
}
|
|
|
570 |
}
|
|
|
571 |
return $p_path;
|
|
|
572 |
}
|
|
|
573 |
}
|
|
|
574 |
?>
|