comparison core/lib/Drupal/Core/Archiver/ArchiveTar.php @ 0:c75dbcec494b

Initial commit from drush-created site

+<?php
+// @codingStandardsIgnoreFile
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * File::CSV
+ *
+ * PHP versions 4 and 5
+ *
+ * Copyright (c) 1997-2008,
+ * Vincent Blavet <[e-mail]>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @category  File_Formats
+ * @package   Archive_Tar
+ * @author    Vincent Blavet <[e-mail]>
+ * @copyright 1997-2010 The Authors
+ * @license   http://www.opensource.org/licenses/bsd-license.php New BSD License
+ * @version   CVS: $Id$
+ * @link      http://pear.php.net/package/Archive_Tar
+ */
+
+ /**
+ * Note on Drupal 8 porting.
+ * This file origin is Tar.php, release 1.4.0 (stable) with some code
+ * from PEAR.php, release 1.9.5 (stable) both at http://pear.php.net.
+ * To simplify future porting from pear of this file, you should not
+ * do cosmetic or other non significant changes to this file.
+ * The following changes have been done:
+ *  Added namespace Drupal\Core\Archiver.
+ *  Removed require_once 'PEAR.php'.
+ *  Added defintion of OS_WINDOWS taken from PEAR.php.
+ *  Renamed class to ArchiveTar.
+ *  Removed extends PEAR from class.
+ *  Removed call parent:: __construct().
+ *  Changed PEAR::loadExtension($extname) to this->loadExtension($extname).
+ *  Added function loadExtension() taken from PEAR.php.
+ *  Changed all calls of unlink() to drupal_unlink().
+ *  Changed $this->error_object = &$this->raiseError($p_message)
+ *  to throw new \Exception($p_message).
+ */
+
+
+// Drupal addition.
+namespace {
+
+// Drupal removal require_once 'PEAR.php'.
+
+// Drupal addition OS_WINDOWS as defined in PEAR.php.
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    define('OS_WINDOWS', true);
+} else {
+    define('OS_WINDOWS', false);
+}
+
+define('ARCHIVE_TAR_ATT_SEPARATOR', 90001);
+define('ARCHIVE_TAR_END_BLOCK', pack("a512", ''));
+
+if (!function_exists('gzopen') && function_exists('gzopen64')) {
+    function gzopen($filename, $mode, $use_include_path = 0)
+    {
+        return gzopen64($filename, $mode, $use_include_path);
+    }
+}
+
+if (!function_exists('gztell') && function_exists('gztell64')) {
+    function gztell($zp)
+    {
+        return gztell64($zp);
+    }
+}
+
+if (!function_exists('gzseek') && function_exists('gzseek64')) {
+    function gzseek($zp, $offset, $whence = SEEK_SET)
+    {
+        return gzseek64($zp, $offset, $whence);
+    }
+}
+}
+
+// Drupal addition.
+namespace Drupal\Core\Archiver {
+/**
+ * Creates a (compressed) Tar archive
+ *
+ * @package Archive_Tar
+ * @author  Vincent Blavet <[e-mail]>
+ * @license http://www.opensource.org/licenses/bsd-license.php New BSD License
+ * @version $Revision$
+ */
+// Drupal change class Archive_Tar extends PEAR.
+class ArchiveTar
+{
+    /**
+     * @var string Name of the Tar
+     */
+    public $_tarname = '';
+
+    /**
+     * @var boolean if true, the Tar file will be gzipped
+     */
+    public $_compress = false;
+
+    /**
+     * @var string Type of compression : 'none', 'gz', 'bz2' or 'lzma2'
+     */
+    public $_compress_type = 'none';
+
+    /**
+     * @var string Explode separator
+     */
+    public $_separator = ' ';
+
+    /**
+     * @var file descriptor
+     */
+    public $_file = 0;
+
+    /**
+     * @var string Local Tar name of a remote Tar (http:// or ftp://)
+     */
+    public $_temp_tarname = '';
+
+    /**
+     * @var string regular expression for ignoring files or directories
+     */
+    public $_ignore_regexp = '';
+
+    /**
+     * @var object PEAR_Error object
+     */
+    public $error_object = null;
+
+    /**
+     * Archive_Tar Class constructor. This flavour of the constructor only
+     * declare a new Archive_Tar object, identifying it by the name of the
+     * tar file.
+     * If the compress argument is set the tar will be read or created as a
+     * gzip or bz2 compressed TAR file.
+     *
+     * @param string $p_tarname The name of the tar archive to create
+     * @param string $p_compress can be null, 'gz', 'bz2' or 'lzma2'. This
+     *               parameter indicates if gzip, bz2 or lzma2 compression
+     *               is required.  For compatibility reason the
+     *               boolean value 'true' means 'gz'.
+     *
+     * @return bool
+     */
+    public function __construct($p_tarname, $p_compress = null)
+    {
+        // Drupal removal parent::__construct().
+
+        $this->_compress = false;
+        $this->_compress_type = 'none';
+        if (($p_compress === null) || ($p_compress == '')) {
+            if (@file_exists($p_tarname)) {
+                if ($fp = @fopen($p_tarname, "rb")) {
+                    // look for gzip magic cookie
+                    $data = fread($fp, 2);
+                    fclose($fp);
+                    if ($data == "\37\213") {
+                        $this->_compress = true;
+                        $this->_compress_type = 'gz';
+                        // No sure it's enought for a magic code ....
+                    } elseif ($data == "BZ") {
+                        $this->_compress = true;
+                        $this->_compress_type = 'bz2';
+                    } elseif (file_get_contents($p_tarname, false, null, 1, 4) == '7zXZ') {
+                        $this->_compress = true;
+                        $this->_compress_type = 'lzma2';
+                    }
+                }
+            } else {
+                // probably a remote file or some file accessible
+                // through a stream interface
+                if (substr($p_tarname, -2) == 'gz') {
+                    $this->_compress = true;
+                    $this->_compress_type = 'gz';
+                } elseif ((substr($p_tarname, -3) == 'bz2') ||
+                    (substr($p_tarname, -2) == 'bz')
+                ) {
+                    $this->_compress = true;
+                    $this->_compress_type = 'bz2';
+                } else {
+                    if (substr($p_tarname, -2) == 'xz') {
+                        $this->_compress = true;
+                        $this->_compress_type = 'lzma2';
+                    }
+                }
+            }
+        } else {
+            if (($p_compress === true) || ($p_compress == 'gz')) {
+                $this->_compress = true;
+                $this->_compress_type = 'gz';
+            } else {
+                if ($p_compress == 'bz2') {
+                    $this->_compress = true;
+                    $this->_compress_type = 'bz2';
+                } else {
+                    if ($p_compress == 'lzma2') {
+                        $this->_compress = true;
+                        $this->_compress_type = 'lzma2';
+                    } else {
+                        $this->_error(
+                            "Unsupported compression type '$p_compress'\n" .
+                            "Supported types are 'gz', 'bz2' and 'lzma2'.\n"
+                        );
+                        return false;
+                    }
+                }
+            }
+        }
+        $this->_tarname = $p_tarname;
+        if ($this->_compress) { // assert zlib or bz2 or xz extension support
+            if ($this->_compress_type == 'gz') {
+                $extname = 'zlib';
+            } else {
+                if ($this->_compress_type == 'bz2') {
+                    $extname = 'bz2';
+                } else {
+                    if ($this->_compress_type == 'lzma2') {
+                        $extname = 'xz';
+                    }
+                }
+            }
+
+            if (!extension_loaded($extname)) {
+                // Drupal change PEAR::loadExtension($extname).
+                $this->loadExtension($extname);
+            }
+            if (!extension_loaded($extname)) {
+                $this->_error(
+                    "The extension '$extname' couldn't be found.\n" .
+                    "Please make sure your version of PHP was built " .
+                    "with '$extname' support.\n"
+                );
+                return false;
+            }
+        }
+    }
+
+    public function __destruct()
+    {
+        $this->_close();
+        // ----- Look for a local copy to delete
+        if ($this->_temp_tarname != '') {
+            @drupal_unlink($this->_temp_tarname);
+        }
+    }
+
+    // Drupal addition from PEAR.php.
+    /**
+    * OS independent PHP extension load. Remember to take care
+    * on the correct extension name for case sensitive OSes.
+    *
+    * @param string $ext The extension name
+    * @return bool Success or not on the dl() call
+    */
+    function loadExtension($ext)
+    {
+        if (extension_loaded($ext)) {
+            return true;
+        }
+
+        // if either returns true dl() will produce a FATAL error, stop that
+        if (
+            function_exists('dl') === false ||
+            ini_get('enable_dl') != 1 ||
+            ini_get('safe_mode') == 1
+        ) {
+            return false;
+        }
+
+        if (OS_WINDOWS) {
+            $suffix = '.dll';
+        } elseif (PHP_OS == 'HP-UX') {
+            $suffix = '.sl';
+        } elseif (PHP_OS == 'AIX') {
+            $suffix = '.a';
+        } elseif (PHP_OS == 'OSX') {
+            $suffix = '.bundle';
+        } else {
+            $suffix = '.so';
+        }
+
+        return @dl('php_'.$ext.$suffix) || @dl($ext.$suffix);
+    }
+
+
+    /**
+     * This method creates the archive file and add the files / directories
+     * that are listed in $p_filelist.
+     * If a file with the same name exist and is writable, it is replaced
+     * by the new tar.
+     * The method return false and a PEAR error text.
+     * The $p_filelist parameter can be an array of string, each string
+     * representing a filename or a directory name with their path if
+     * needed. It can also be a single string with names separated by a
+     * single blank.
+     * For each directory added in the archive, the files and
+     * sub-directories are also added.
+     * See also createModify() method for more details.
+     *
+     * @param array $p_filelist An array of filenames and directory names, or a
+     *              single string with names separated by a single
+     *              blank space.
+     *
+     * @return true on success, false on error.
+     * @see    createModify()
+     */
+    public function create($p_filelist)
+    {
+        return $this->createModify($p_filelist, '', '');
+    }
+
+    /**
+     * This method add the files / directories that are listed in $p_filelist in
+     * the archive. If the archive does not exist it is created.
+     * The method return false and a PEAR error text.
+     * The files and directories listed are only added at the end of the archive,
+     * even if a file with the same name is already archived.
+     * See also createModify() method for more details.
+     *
+     * @param array $p_filelist An array of filenames and directory names, or a
+     *              single string with names separated by a single
+     *              blank space.
+     *
+     * @return true on success, false on error.
+     * @see    createModify()
+     * @access public
+     */
+    public function add($p_filelist)
+    {
+        return $this->addModify($p_filelist, '', '');
+    }
+
+    /**
+     * @param string $p_path
+     * @param bool $p_preserve
+     * @return bool
+     */
+    public function extract($p_path = '', $p_preserve = false)
+    {
+        return $this->extractModify($p_path, '', $p_preserve);
+    }
+
+    /**
+     * @return array|int
+     */
+    public function listContent()
+    {
+        $v_list_detail = array();
+
+        if ($this->_openRead()) {
+            if (!$this->_extractList('', $v_list_detail, "list", '', '')) {
+                unset($v_list_detail);
+                $v_list_detail = 0;
+            }
+            $this->_close();
+        }
+
+        return $v_list_detail;
+    }
+
+    /**
+     * This method creates the archive file and add the files / directories
+     * that are listed in $p_filelist.
+     * If the file already exists and is writable, it is replaced by the
+     * new tar. It is a create and not an add. If the file exists and is
+     * read-only or is a directory it is not replaced. The method return
+     * false and a PEAR error text.
+     * The $p_filelist parameter can be an array of string, each string
+     * representing a filename or a directory name with their path if
+     * needed. It can also be a single string with names separated by a
+     * single blank.
+     * The path indicated in $p_remove_dir will be removed from the
+     * memorized path of each file / directory listed when this path
+     * exists. By default nothing is removed (empty path '')
+     * The path indicated in $p_add_dir will be added at the beginning of
+     * the memorized path of each file / directory listed. However it can
+     * be set to empty ''. The adding of a path is done after the removing
+     * of path.
+     * The path add/remove ability enables the user to prepare an archive
+     * for extraction in a different path than the origin files are.
+     * See also addModify() method for file adding properties.
+     *
+     * @param array $p_filelist An array of filenames and directory names,
+     *                             or a single string with names separated by
+     *                             a single blank space.
+     * @param string $p_add_dir A string which contains a path to be added
+     *                             to the memorized path of each element in
+     *                             the list.
+     * @param string $p_remove_dir A string which contains a path to be
+     *                             removed from the memorized path of each
+     *                             element in the list, when relevant.
+     *
+     * @return boolean true on success, false on error.
+     * @see addModify()
+     */
+    public function createModify($p_filelist, $p_add_dir, $p_remove_dir = '')
+    {
+        $v_result = true;
+
+        if (!$this->_openWrite()) {
+            return false;
+        }
+
+        if ($p_filelist != '') {
+            if (is_array($p_filelist)) {
+                $v_list = $p_filelist;
+            } elseif (is_string($p_filelist)) {
+                $v_list = explode($this->_separator, $p_filelist);
+            } else {
+                $this->_cleanFile();
+                $this->_error('Invalid file list');
+                return false;
+            }
+
+            $v_result = $this->_addList($v_list, $p_add_dir, $p_remove_dir);
+        }
+
+        if ($v_result) {
+            $this->_writeFooter();
+            $this->_close();
+        } else {
+            $this->_cleanFile();
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * This method add the files / directories listed in $p_filelist at the
+     * end of the existing archive. If the archive does not yet exists it
+     * is created.
+     * The $p_filelist parameter can be an array of string, each string
+     * representing a filename or a directory name with their path if
+     * needed. It can also be a single string with names separated by a
+     * single blank.
+     * The path indicated in $p_remove_dir will be removed from the
+     * memorized path of each file / directory listed when this path
+     * exists. By default nothing is removed (empty path '')
+     * The path indicated in $p_add_dir will be added at the beginning of
+     * the memorized path of each file / directory listed. However it can
+     * be set to empty ''. The adding of a path is done after the removing
+     * of path.
+     * The path add/remove ability enables the user to prepare an archive
+     * for extraction in a different path than the origin files are.
+     * If a file/dir is already in the archive it will only be added at the
+     * end of the archive. There is no update of the existing archived
+     * file/dir. However while extracting the archive, the last file will
+     * replace the first one. This results in a none optimization of the
+     * archive size.
+     * If a file/dir does not exist the file/dir is ignored. However an
+     * error text is send to PEAR error.
+     * If a file/dir is not readable the file/dir is ignored. However an
+     * error text is send to PEAR error.
+     *
+     * @param array $p_filelist An array of filenames and directory
+     *                             names, or a single string with names
+     *                             separated by a single blank space.
+     * @param string $p_add_dir A string which contains a path to be
+     *                             added to the memorized path of each
+     *                             element in the list.
+     * @param string $p_remove_dir A string which contains a path to be
+     *                             removed from the memorized path of
+     *                             each element in the list, when
+     *                             relevant.
+     *
+     * @return true on success, false on error.
+     */
+    public function addModify($p_filelist, $p_add_dir, $p_remove_dir = '')
+    {
+        $v_result = true;
+
+        if (!$this->_isArchive()) {
+            $v_result = $this->createModify(
+                $p_filelist,
+                $p_add_dir,
+                $p_remove_dir
+            );
+        } else {
+            if (is_array($p_filelist)) {
+                $v_list = $p_filelist;
+            } elseif (is_string($p_filelist)) {
+                $v_list = explode($this->_separator, $p_filelist);
+            } else {
+                $this->_error('Invalid file list');
+                return false;
+            }
+
+            $v_result = $this->_append($v_list, $p_add_dir, $p_remove_dir);
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * This method add a single string as a file at the
+     * end of the existing archive. If the archive does not yet exists it
+     * is created.
+     *
+     * @param string $p_filename A string which contains the full
+     *                           filename path that will be associated
+     *                           with the string.
+     * @param string $p_string The content of the file added in
+     *                           the archive.
+     * @param bool|int $p_datetime A custom date/time (unix timestamp)
+     *                           for the file (optional).
+     * @param array $p_params An array of optional params:
+     *                               stamp => the datetime (replaces
+     *                                   datetime above if it exists)
+     *                               mode => the permissions on the
+     *                                   file (600 by default)
+     *                               type => is this a link?  See the
+     *                                   tar specification for details.
+     *                                   (default = regular file)
+     *                               uid => the user ID of the file
+     *                                   (default = 0 = root)
+     *                               gid => the group ID of the file
+     *                                   (default = 0 = root)
+     *
+     * @return true on success, false on error.
+     */
+    public function addString($p_filename, $p_string, $p_datetime = false, $p_params = array())
+    {
+        $p_stamp = @$p_params["stamp"] ? $p_params["stamp"] : ($p_datetime ? $p_datetime : time());
+        $p_mode = @$p_params["mode"] ? $p_params["mode"] : 0600;
+        $p_type = @$p_params["type"] ? $p_params["type"] : "";
+        $p_uid = @$p_params["uid"] ? $p_params["uid"] : "";
+        $p_gid = @$p_params["gid"] ? $p_params["gid"] : "";
+        $v_result = true;
+
+        if (!$this->_isArchive()) {
+            if (!$this->_openWrite()) {
+                return false;
+            }
+            $this->_close();
+        }
+
+        if (!$this->_openAppend()) {
+            return false;
+        }
+
+        // Need to check the get back to the temporary file ? ....
+        $v_result = $this->_addString($p_filename, $p_string, $p_datetime, $p_params);
+
+        $this->_writeFooter();
+
+        $this->_close();
+
+        return $v_result;
+    }
+
+    /**
+     * This method extract all the content of the archive in the directory
+     * indicated by $p_path. When relevant the memorized path of the
+     * files/dir can be modified by removing the $p_remove_path path at the
+     * beginning of the file/dir path.
+     * While extracting a file, if the directory path does not exists it is
+     * created.
+     * While extracting a file, if the file already exists it is replaced
+     * without looking for last modification date.
+     * While extracting a file, if the file already exists and is write
+     * protected, the extraction is aborted.
+     * While extracting a file, if a directory with the same name already
+     * exists, the extraction is aborted.
+     * While extracting a directory, if a file with the same name already
+     * exists, the extraction is aborted.
+     * While extracting a file/directory if the destination directory exist
+     * and is write protected, or does not exist but can not be created,
+     * the extraction is aborted.
+     * If after extraction an extracted file does not show the correct
+     * stored file size, the extraction is aborted.
+     * When the extraction is aborted, a PEAR error text is set and false
+     * is returned. However the result can be a partial extraction that may
+     * need to be manually cleaned.
+     *
+     * @param string $p_path The path of the directory where the
+     *                               files/dir need to by extracted.
+     * @param string $p_remove_path Part of the memorized path that can be
+     *                               removed if present at the beginning of
+     *                               the file/dir path.
+     * @param boolean $p_preserve Preserve user/group ownership of files
+     *
+     * @return boolean true on success, false on error.
+     * @see    extractList()
+     */
+    public function extractModify($p_path, $p_remove_path, $p_preserve = false)
+    {
+        $v_result = true;
+        $v_list_detail = array();
+
+        if ($v_result = $this->_openRead()) {
+            $v_result = $this->_extractList(
+                $p_path,
+                $v_list_detail,
+                "complete",
+                0,
+                $p_remove_path,
+                $p_preserve
+            );
+            $this->_close();
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * This method extract from the archive one file identified by $p_filename.
+     * The return value is a string with the file content, or NULL on error.
+     *
+     * @param string $p_filename The path of the file to extract in a string.
+     *
+     * @return a string with the file content or NULL.
+     */
+    public function extractInString($p_filename)
+    {
+        if ($this->_openRead()) {
+            $v_result = $this->_extractInString($p_filename);
+            $this->_close();
+        } else {
+            $v_result = null;
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * This method extract from the archive only the files indicated in the
+     * $p_filelist. These files are extracted in the current directory or
+     * in the directory indicated by the optional $p_path parameter.
+     * If indicated the $p_remove_path can be used in the same way as it is
+     * used in extractModify() method.
+     *
+     * @param array $p_filelist An array of filenames and directory names,
+     *                               or a single string with names separated
+     *                               by a single blank space.
+     * @param string $p_path The path of the directory where the
+     *                               files/dir need to by extracted.
+     * @param string $p_remove_path Part of the memorized path that can be
+     *                               removed if present at the beginning of
+     *                               the file/dir path.
+     * @param boolean $p_preserve Preserve user/group ownership of files
+     *
+     * @return true on success, false on error.
+     * @see    extractModify()
+     */
+    public function extractList($p_filelist, $p_path = '', $p_remove_path = '', $p_preserve = false)
+    {
+        $v_result = true;
+        $v_list_detail = array();
+
+        if (is_array($p_filelist)) {
+            $v_list = $p_filelist;
+        } elseif (is_string($p_filelist)) {
+            $v_list = explode($this->_separator, $p_filelist);
+        } else {
+            $this->_error('Invalid string list');
+            return false;
+        }
+
+        if ($v_result = $this->_openRead()) {
+            $v_result = $this->_extractList(
+                $p_path,
+                $v_list_detail,
+                "partial",
+                $v_list,
+                $p_remove_path,
+                $p_preserve
+            );
+            $this->_close();
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * This method set specific attributes of the archive. It uses a variable
+     * list of parameters, in the format attribute code + attribute values :
+     * $arch->setAttribute(ARCHIVE_TAR_ATT_SEPARATOR, ',');
+     *
+     * @return true on success, false on error.
+     */
+    public function setAttribute()
+    {
+        $v_result = true;
+
+        // ----- Get the number of variable list of arguments
+        if (($v_size = func_num_args()) == 0) {
+            return true;
+        }
+
+        // ----- Get the arguments
+        $v_att_list = & func_get_args();
+
+        // ----- Read the attributes
+        $i = 0;
+        while ($i < $v_size) {
+
+            // ----- Look for next option
+            switch ($v_att_list[$i]) {
+                // ----- Look for options that request a string value
+                case ARCHIVE_TAR_ATT_SEPARATOR :
+                    // ----- Check the number of parameters
+                    if (($i + 1) >= $v_size) {
+                        $this->_error(
+                            'Invalid number of parameters for '
+                            . 'attribute ARCHIVE_TAR_ATT_SEPARATOR'
+                        );
+                        return false;
+                    }
+
+                    // ----- Get the value
+                    $this->_separator = $v_att_list[$i + 1];
+                    $i++;
+                    break;
+
+                default :
+                    $this->_error('Unknown attribute code ' . $v_att_list[$i] . '');
+                    return false;
+            }
+
+            // ----- Next attribute
+            $i++;
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * This method sets the regular expression for ignoring files and directories
+     * at import, for example:
+     * $arch->setIgnoreRegexp("#CVS|\.svn#");
+     *
+     * @param string $regexp regular expression defining which files or directories to ignore
+     */
+    public function setIgnoreRegexp($regexp)
+    {
+        $this->_ignore_regexp = $regexp;
+    }
+
+    /**
+     * This method sets the regular expression for ignoring all files and directories
+     * matching the filenames in the array list at import, for example:
+     * $arch->setIgnoreList(array('CVS', '.svn', 'bin/tool'));
+     *
+     * @param array $list a list of file or directory names to ignore
+     *
+     * @access public
+     */
+    public function setIgnoreList($list)
+    {
+        $regexp = str_replace(array('#', '.', '^', '$'), array('\#', '\.', '\^', '\$'), $list);
+        $regexp = '#/' . join('$|/', $list) . '#';
+        $this->setIgnoreRegexp($regexp);
+    }
+
+    /**
+     * @param string $p_message
+     */
+    public function _error($p_message)
+    {
+        // Drupal change $this->error_object = $this->raiseError($p_message).
+        throw new \Exception($p_message);
+    }
+
+    /**
+     * @param string $p_message
+     */
+    public function _warning($p_message)
+    {
+        // Drupal change $this->error_object = $this->raiseError($p_message).
+        throw new \Exception($p_message);
+    }
+
+    /**
+     * @param string $p_filename
+     * @return bool
+     */
+    public function _isArchive($p_filename = null)
+    {
+        if ($p_filename == null) {
+            $p_filename = $this->_tarname;
+        }
+        clearstatcache();
+        return @is_file($p_filename) && !@is_link($p_filename);
+    }
+
+    /**
+     * @return bool
+     */
+    public function _openWrite()
+    {
+        if ($this->_compress_type == 'gz' && function_exists('gzopen')) {
+            $this->_file = @gzopen($this->_tarname, "wb9");
+        } else {
+            if ($this->_compress_type == 'bz2' && function_exists('bzopen')) {
+                $this->_file = @bzopen($this->_tarname, "w");
+            } else {
+                if ($this->_compress_type == 'lzma2' && function_exists('xzopen')) {
+                    $this->_file = @xzopen($this->_tarname, 'w');
+                } else {
+                    if ($this->_compress_type == 'none') {
+                        $this->_file = @fopen($this->_tarname, "wb");
+                    } else {
+                        $this->_error(
+                            'Unknown or missing compression type ('
+                            . $this->_compress_type . ')'
+                        );
+                        return false;
+                    }
+                }
+            }
+        }
+
+        if ($this->_file == 0) {
+            $this->_error(
+                'Unable to open in write mode \''
+                . $this->_tarname . '\''
+            );
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function _openRead()
+    {
+        if (strtolower(substr($this->_tarname, 0, 7)) == 'http://') {
+
+            // ----- Look if a local copy need to be done
+            if ($this->_temp_tarname == '') {
+                $this->_temp_tarname = uniqid('tar') . '.tmp';
+                if (!$v_file_from = @fopen($this->_tarname, 'rb')) {
+                    $this->_error(
+                        'Unable to open in read mode \''
+                        . $this->_tarname . '\''
+                    );
+                    $this->_temp_tarname = '';
+                    return false;
+                }
+                if (!$v_file_to = @fopen($this->_temp_tarname, 'wb')) {
+                    $this->_error(
+                        'Unable to open in write mode \''
+                        . $this->_temp_tarname . '\''
+                    );
+                    $this->_temp_tarname = '';
+                    return false;
+                }
+                while ($v_data = @fread($v_file_from, 1024)) {
+                    @fwrite($v_file_to, $v_data);
+                }
+                @fclose($v_file_from);
+                @fclose($v_file_to);
+            }
+
+            // ----- File to open if the local copy
+            $v_filename = $this->_temp_tarname;
+        } else {
+            // ----- File to open if the normal Tar file
+
+            $v_filename = $this->_tarname;
+        }
+
+        if ($this->_compress_type == 'gz' && function_exists('gzopen')) {
+            $this->_file = @gzopen($v_filename, "rb");
+        } else {
+            if ($this->_compress_type == 'bz2' && function_exists('bzopen')) {
+                $this->_file = @bzopen($v_filename, "r");
+            } else {
+                if ($this->_compress_type == 'lzma2' && function_exists('xzopen')) {
+                    $this->_file = @xzopen($v_filename, "r");
+                } else {
+                    if ($this->_compress_type == 'none') {
+                        $this->_file = @fopen($v_filename, "rb");
+                    } else {
+                        $this->_error(
+                            'Unknown or missing compression type ('
+                            . $this->_compress_type . ')'
+                        );
+                        return false;
+                    }
+                }
+            }
+        }
+
+        if ($this->_file == 0) {
+            $this->_error('Unable to open in read mode \'' . $v_filename . '\'');
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function _openReadWrite()
+    {
+        if ($this->_compress_type == 'gz') {
+            $this->_file = @gzopen($this->_tarname, "r+b");
+        } else {
+            if ($this->_compress_type == 'bz2') {
+                $this->_error(
+                    'Unable to open bz2 in read/write mode \''
+                    . $this->_tarname . '\' (limitation of bz2 extension)'
+                );
+                return false;
+            } else {
+                if ($this->_compress_type == 'lzma2') {
+                    $this->_error(
+                        'Unable to open lzma2 in read/write mode \''
+                        . $this->_tarname . '\' (limitation of lzma2 extension)'
+                    );
+                    return false;
+                } else {
+                    if ($this->_compress_type == 'none') {
+                        $this->_file = @fopen($this->_tarname, "r+b");
+                    } else {
+                        $this->_error(
+                            'Unknown or missing compression type ('
+                            . $this->_compress_type . ')'
+                        );
+                        return false;
+                    }
+                }
+            }
+        }
+
+        if ($this->_file == 0) {
+            $this->_error(
+                'Unable to open in read/write mode \''
+                . $this->_tarname . '\''
+            );
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function _close()
+    {
+        //if (isset($this->_file)) {
+        if (is_resource($this->_file)) {
+            if ($this->_compress_type == 'gz') {
+                @gzclose($this->_file);
+            } else {
+                if ($this->_compress_type == 'bz2') {
+                    @bzclose($this->_file);
+                } else {
+                    if ($this->_compress_type == 'lzma2') {
+                        @xzclose($this->_file);
+                    } else {
+                        if ($this->_compress_type == 'none') {
+                            @fclose($this->_file);
+                        } else {
+                            $this->_error(
+                                'Unknown or missing compression type ('
+                                . $this->_compress_type . ')'
+                            );
+                        }
+                    }
+                }
+            }
+
+            $this->_file = 0;
+        }
+
+        // ----- Look if a local copy need to be erase
+        // Note that it might be interesting to keep the url for a time : ToDo
+        if ($this->_temp_tarname != '') {
+            @drupal_unlink($this->_temp_tarname);
+            $this->_temp_tarname = '';
+        }
+
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function _cleanFile()
+    {
+        $this->_close();
+
+        // ----- Look for a local copy
+        if ($this->_temp_tarname != '') {
+            // ----- Remove the local copy but not the remote tarname
+            @drupal_unlink($this->_temp_tarname);
+            $this->_temp_tarname = '';
+        } else {
+            // ----- Remove the local tarname file
+            @drupal_unlink($this->_tarname);
+        }
+        $this->_tarname = '';
+
+        return true;
+    }
+
+    /**
+     * @param mixed $p_binary_data
+     * @param integer $p_len
+     * @return bool
+     */
+    public function _writeBlock($p_binary_data, $p_len = null)
+    {
+        if (is_resource($this->_file)) {
+            if ($p_len === null) {
+                if ($this->_compress_type == 'gz') {
+                    @gzputs($this->_file, $p_binary_data);
+                } else {
+                    if ($this->_compress_type == 'bz2') {
+                        @bzwrite($this->_file, $p_binary_data);
+                    } else {
+                        if ($this->_compress_type == 'lzma2') {
+                            @xzwrite($this->_file, $p_binary_data);
+                        } else {
+                            if ($this->_compress_type == 'none') {
+                                @fputs($this->_file, $p_binary_data);
+                            } else {
+                                $this->_error(
+                                    'Unknown or missing compression type ('
+                                    . $this->_compress_type . ')'
+                                );
+                            }
+                        }
+                    }
+                }
+            } else {
+                if ($this->_compress_type == 'gz') {
+                    @gzputs($this->_file, $p_binary_data, $p_len);
+                } else {
+                    if ($this->_compress_type == 'bz2') {
+                        @bzwrite($this->_file, $p_binary_data, $p_len);
+                    } else {
+                        if ($this->_compress_type == 'lzma2') {
+                            @xzwrite($this->_file, $p_binary_data, $p_len);
+                        } else {
+                            if ($this->_compress_type == 'none') {
+                                @fputs($this->_file, $p_binary_data, $p_len);
+                            } else {
+                                $this->_error(
+                                    'Unknown or missing compression type ('
+                                    . $this->_compress_type . ')'
+                                );
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        return true;
+    }
+
+    /**
+     * @return null|string
+     */
+    public function _readBlock()
+    {
+        $v_block = null;
+        if (is_resource($this->_file)) {
+            if ($this->_compress_type == 'gz') {
+                $v_block = @gzread($this->_file, 512);
+            } else {
+                if ($this->_compress_type == 'bz2') {
+                    $v_block = @bzread($this->_file, 512);
+                } else {
+                    if ($this->_compress_type == 'lzma2') {
+                        $v_block = @xzread($this->_file, 512);
+                    } else {
+                        if ($this->_compress_type == 'none') {
+                            $v_block = @fread($this->_file, 512);
+                        } else {
+                            $this->_error(
+                                'Unknown or missing compression type ('
+                                . $this->_compress_type . ')'
+                            );
+                        }
+                    }
+                }
+            }
+        }
+        return $v_block;
+    }
+
+    /**
+     * @param null $p_len
+     * @return bool
+     */
+    public function _jumpBlock($p_len = null)
+    {
+        if (is_resource($this->_file)) {
+            if ($p_len === null) {
+                $p_len = 1;
+            }
+
+            if ($this->_compress_type == 'gz') {
+                @gzseek($this->_file, gztell($this->_file) + ($p_len * 512));
+            } else {
+                if ($this->_compress_type == 'bz2') {
+                    // ----- Replace missing bztell() and bzseek()
+                    for ($i = 0; $i < $p_len; $i++) {
+                        $this->_readBlock();
+                    }
+                } else {
+                    if ($this->_compress_type == 'lzma2') {
+                        // ----- Replace missing xztell() and xzseek()
+                        for ($i = 0; $i < $p_len; $i++) {
+                            $this->_readBlock();
+                        }
+                    } else {
+                        if ($this->_compress_type == 'none') {
+                            @fseek($this->_file, $p_len * 512, SEEK_CUR);
+                        } else {
+                            $this->_error(
+                                'Unknown or missing compression type ('
+                                . $this->_compress_type . ')'
+                            );
+                        }
+                    }
+                }
+            }
+        }
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function _writeFooter()
+    {
+        if (is_resource($this->_file)) {
+            // ----- Write the last 0 filled block for end of archive
+            $v_binary_data = pack('a1024', '');
+            $this->_writeBlock($v_binary_data);
+        }
+        return true;
+    }
+
+    /**
+     * @param array $p_list
+     * @param string $p_add_dir
+     * @param string $p_remove_dir
+     * @return bool
+     */
+    public function _addList($p_list, $p_add_dir, $p_remove_dir)
+    {
+        $v_result = true;
+        $v_header = array();
+
+        // ----- Remove potential windows directory separator
+        $p_add_dir = $this->_translateWinPath($p_add_dir);
+        $p_remove_dir = $this->_translateWinPath($p_remove_dir, false);
+
+        if (!$this->_file) {
+            $this->_error('Invalid file descriptor');
+            return false;
+        }
+
+        if (sizeof($p_list) == 0) {
+            return true;
+        }
+
+        foreach ($p_list as $v_filename) {
+            if (!$v_result) {
+                break;
+            }
+
+            // ----- Skip the current tar name
+            if ($v_filename == $this->_tarname) {
+                continue;
+            }
+
+            if ($v_filename == '') {
+                continue;
+            }
+
+            // ----- ignore files and directories matching the ignore regular expression
+            if ($this->_ignore_regexp && preg_match($this->_ignore_regexp, '/' . $v_filename)) {
+                $this->_warning("File '$v_filename' ignored");
+                continue;
+            }
+
+            if (!file_exists($v_filename) && !is_link($v_filename)) {
+                $this->_warning("File '$v_filename' does not exist");
+                continue;
+            }
+
+            // ----- Add the file or directory header
+            if (!$this->_addFile($v_filename, $v_header, $p_add_dir, $p_remove_dir)) {
+                return false;
+            }
+
+            if (@is_dir($v_filename) && !@is_link($v_filename)) {
+                if (!($p_hdir = opendir($v_filename))) {
+                    $this->_warning("Directory '$v_filename' can not be read");
+                    continue;
+                }
+                while (false !== ($p_hitem = readdir($p_hdir))) {
+                    if (($p_hitem != '.') && ($p_hitem != '..')) {
+                        if ($v_filename != ".") {
+                            $p_temp_list[0] = $v_filename . '/' . $p_hitem;
+                        } else {
+                            $p_temp_list[0] = $p_hitem;
+                        }
+
+                        $v_result = $this->_addList(
+                            $p_temp_list,
+                            $p_add_dir,
+                            $p_remove_dir
+                        );
+                    }
+                }
+
+                unset($p_temp_list);
+                unset($p_hdir);
+                unset($p_hitem);
+            }
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * @param string $p_filename
+     * @param mixed $p_header
+     * @param string $p_add_dir
+     * @param string $p_remove_dir
+     * @param null $v_stored_filename
+     * @return bool
+     */
+    public function _addFile($p_filename, &$p_header, $p_add_dir, $p_remove_dir, $v_stored_filename = null)
+    {
+        if (!$this->_file) {
+            $this->_error('Invalid file descriptor');
+            return false;
+        }
+
+        if ($p_filename == '') {
+            $this->_error('Invalid file name');
+            return false;
+        }
+
+        if (is_null($v_stored_filename)) {
+            // ----- Calculate the stored filename
+            $p_filename = $this->_translateWinPath($p_filename, false);
+            $v_stored_filename = $p_filename;
+
+            if (strcmp($p_filename, $p_remove_dir) == 0) {
+                return true;
+            }
+
+            if ($p_remove_dir != '') {
+                if (substr($p_remove_dir, -1) != '/') {
+                    $p_remove_dir .= '/';
+                }
+
+                if (substr($p_filename, 0, strlen($p_remove_dir)) == $p_remove_dir) {
+                    $v_stored_filename = substr($p_filename, strlen($p_remove_dir));
+                }
+            }
+
+            $v_stored_filename = $this->_translateWinPath($v_stored_filename);
+            if ($p_add_dir != '') {
+                if (substr($p_add_dir, -1) == '/') {
+                    $v_stored_filename = $p_add_dir . $v_stored_filename;
+                } else {
+                    $v_stored_filename = $p_add_dir . '/' . $v_stored_filename;
+                }
+            }
+
+            $v_stored_filename = $this->_pathReduction($v_stored_filename);
+        }
+
+        if ($this->_isArchive($p_filename)) {
+            if (($v_file = @fopen($p_filename, "rb")) == 0) {
+                $this->_warning(
+                    "Unable to open file '" . $p_filename
+                    . "' in binary read mode"
+                );
+                return true;
+            }
+
+            if (!$this->_writeHeader($p_filename, $v_stored_filename)) {
+                return false;
+            }
+
+            while (($v_buffer = fread($v_file, 512)) != '') {
+                $v_binary_data = pack("a512", "$v_buffer");
+                $this->_writeBlock($v_binary_data);
+            }
+
+            fclose($v_file);
+        } else {
+            // ----- Only header for dir
+            if (!$this->_writeHeader($p_filename, $v_stored_filename)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * @param string $p_filename
+     * @param string $p_string
+     * @param bool $p_datetime
+     * @param array $p_params
+     * @return bool
+     */
+    public function _addString($p_filename, $p_string, $p_datetime = false, $p_params = array())
+    {
+        $p_stamp = @$p_params["stamp"] ? $p_params["stamp"] : ($p_datetime ? $p_datetime : time());
+        $p_mode = @$p_params["mode"] ? $p_params["mode"] : 0600;
+        $p_type = @$p_params["type"] ? $p_params["type"] : "";
+        $p_uid = @$p_params["uid"] ? $p_params["uid"] : 0;
+        $p_gid = @$p_params["gid"] ? $p_params["gid"] : 0;
+        if (!$this->_file) {
+            $this->_error('Invalid file descriptor');
+            return false;
+        }
+
+        if ($p_filename == '') {
+            $this->_error('Invalid file name');
+            return false;
+        }
+
+        // ----- Calculate the stored filename
+        $p_filename = $this->_translateWinPath($p_filename, false);
+
+        // ----- If datetime is not specified, set current time
+        if ($p_datetime === false) {
+            $p_datetime = time();
+        }
+
+        if (!$this->_writeHeaderBlock(
+            $p_filename,
+            strlen($p_string),
+            $p_stamp,
+            $p_mode,
+            $p_type,
+            $p_uid,
+            $p_gid
+        )
+        ) {
+            return false;
+        }
+
+        $i = 0;
+        while (($v_buffer = substr($p_string, (($i++) * 512), 512)) != '') {
+            $v_binary_data = pack("a512", $v_buffer);
+            $this->_writeBlock($v_binary_data);
+        }
+
+        return true;
+    }
+
+    /**
+     * @param string $p_filename
+     * @param string $p_stored_filename
+     * @return bool
+     */
+    public function _writeHeader($p_filename, $p_stored_filename)
+    {
+        if ($p_stored_filename == '') {
+            $p_stored_filename = $p_filename;
+        }
+        $v_reduce_filename = $this->_pathReduction($p_stored_filename);
+
+        if (strlen($v_reduce_filename) > 99) {
+            if (!$this->_writeLongHeader($v_reduce_filename)) {
+                return false;
+            }
+        }
+
+        $v_info = lstat($p_filename);
+        $v_uid = sprintf("%07s", DecOct($v_info[4]));
+        $v_gid = sprintf("%07s", DecOct($v_info[5]));
+        $v_perms = sprintf("%07s", DecOct($v_info['mode'] & 000777));
+
+        $v_mtime = sprintf("%011s", DecOct($v_info['mtime']));
+
+        $v_linkname = '';
+
+        if (@is_link($p_filename)) {
+            $v_typeflag = '2';
+            $v_linkname = readlink($p_filename);
+            $v_size = sprintf("%011s", DecOct(0));
+        } elseif (@is_dir($p_filename)) {
+            $v_typeflag = "5";
+            $v_size = sprintf("%011s", DecOct(0));
+        } else {
+            $v_typeflag = '0';
+            clearstatcache();
+            $v_size = sprintf("%011s", DecOct($v_info['size']));
+        }
+
+        $v_magic = 'ustar ';
+
+        $v_version = ' ';
+
+        if (function_exists('posix_getpwuid')) {
+            $userinfo = posix_getpwuid($v_info[4]);
+            $groupinfo = posix_getgrgid($v_info[5]);
+
+            $v_uname = $userinfo['name'];
+            $v_gname = $groupinfo['name'];
+        } else {
+            $v_uname = '';
+            $v_gname = '';
+        }
+
+        $v_devmajor = '';
+
+        $v_devminor = '';
+
+        $v_prefix = '';
+
+        $v_binary_data_first = pack(
+            "a100a8a8a8a12a12",
+            $v_reduce_filename,
+            $v_perms,
+            $v_uid,
+            $v_gid,
+            $v_size,
+            $v_mtime
+        );
+        $v_binary_data_last = pack(
+            "a1a100a6a2a32a32a8a8a155a12",
+            $v_typeflag,
+            $v_linkname,
+            $v_magic,
+            $v_version,
+            $v_uname,
+            $v_gname,
+            $v_devmajor,
+            $v_devminor,
+            $v_prefix,
+            ''
+        );
+
+        // ----- Calculate the checksum
+        $v_checksum = 0;
+        // ..... First part of the header
+        for ($i = 0; $i < 148; $i++) {
+            $v_checksum += ord(substr($v_binary_data_first, $i, 1));
+        }
+        // ..... Ignore the checksum value and replace it by ' ' (space)
+        for ($i = 148; $i < 156; $i++) {
+            $v_checksum += ord(' ');
+        }
+        // ..... Last part of the header
+        for ($i = 156, $j = 0; $i < 512; $i++, $j++) {
+            $v_checksum += ord(substr($v_binary_data_last, $j, 1));
+        }
+
+        // ----- Write the first 148 bytes of the header in the archive
+        $this->_writeBlock($v_binary_data_first, 148);
+
+        // ----- Write the calculated checksum
+        $v_checksum = sprintf("%06s ", DecOct($v_checksum));
+        $v_binary_data = pack("a8", $v_checksum);
+        $this->_writeBlock($v_binary_data, 8);
+
+        // ----- Write the last 356 bytes of the header in the archive
+        $this->_writeBlock($v_binary_data_last, 356);
+
+        return true;
+    }
+
+    /**
+     * @param string $p_filename
+     * @param int $p_size
+     * @param int $p_mtime
+     * @param int $p_perms
+     * @param string $p_type
+     * @param int $p_uid
+     * @param int $p_gid
+     * @return bool
+     */
+    public function _writeHeaderBlock(
+        $p_filename,
+        $p_size,
+        $p_mtime = 0,
+        $p_perms = 0,
+        $p_type = '',
+        $p_uid = 0,
+        $p_gid = 0
+    ) {
+        $p_filename = $this->_pathReduction($p_filename);
+
+        if (strlen($p_filename) > 99) {
+            if (!$this->_writeLongHeader($p_filename)) {
+                return false;
+            }
+        }
+
+        if ($p_type == "5") {
+            $v_size = sprintf("%011s", DecOct(0));
+        } else {
+            $v_size = sprintf("%011s", DecOct($p_size));
+        }
+
+        $v_uid = sprintf("%07s", DecOct($p_uid));
+        $v_gid = sprintf("%07s", DecOct($p_gid));
+        $v_perms = sprintf("%07s", DecOct($p_perms & 000777));
+
+        $v_mtime = sprintf("%11s", DecOct($p_mtime));
+
+        $v_linkname = '';
+
+        $v_magic = 'ustar ';
+
+        $v_version = ' ';
+
+        if (function_exists('posix_getpwuid')) {
+            $userinfo = posix_getpwuid($p_uid);
+            $groupinfo = posix_getgrgid($p_gid);
+
+            $v_uname = $userinfo['name'];
+            $v_gname = $groupinfo['name'];
+        } else {
+            $v_uname = '';
+            $v_gname = '';
+        }
+
+        $v_devmajor = '';
+
+        $v_devminor = '';
+
+        $v_prefix = '';
+
+        $v_binary_data_first = pack(
+            "a100a8a8a8a12A12",
+            $p_filename,
+            $v_perms,
+            $v_uid,
+            $v_gid,
+            $v_size,
+            $v_mtime
+        );
+        $v_binary_data_last = pack(
+            "a1a100a6a2a32a32a8a8a155a12",
+            $p_type,
+            $v_linkname,
+            $v_magic,
+            $v_version,
+            $v_uname,
+            $v_gname,
+            $v_devmajor,
+            $v_devminor,
+            $v_prefix,
+            ''
+        );
+
+        // ----- Calculate the checksum
+        $v_checksum = 0;
+        // ..... First part of the header
+        for ($i = 0; $i < 148; $i++) {
+            $v_checksum += ord(substr($v_binary_data_first, $i, 1));
+        }
+        // ..... Ignore the checksum value and replace it by ' ' (space)
+        for ($i = 148; $i < 156; $i++) {
+            $v_checksum += ord(' ');
+        }
+        // ..... Last part of the header
+        for ($i = 156, $j = 0; $i < 512; $i++, $j++) {
+            $v_checksum += ord(substr($v_binary_data_last, $j, 1));
+        }
+
+        // ----- Write the first 148 bytes of the header in the archive
+        $this->_writeBlock($v_binary_data_first, 148);
+
+        // ----- Write the calculated checksum
+        $v_checksum = sprintf("%06s ", DecOct($v_checksum));
+        $v_binary_data = pack("a8", $v_checksum);
+        $this->_writeBlock($v_binary_data, 8);
+
+        // ----- Write the last 356 bytes of the header in the archive
+        $this->_writeBlock($v_binary_data_last, 356);
+
+        return true;
+    }
+
+    /**
+     * @param string $p_filename
+     * @return bool
+     */
+    public function _writeLongHeader($p_filename)
+    {
+        $v_size = sprintf("%11s ", DecOct(strlen($p_filename)));
+
+        $v_typeflag = 'L';
+
+        $v_linkname = '';
+
+        $v_magic = '';
+
+        $v_version = '';
+
+        $v_uname = '';
+
+        $v_gname = '';
+
+        $v_devmajor = '';
+
+        $v_devminor = '';
+
+        $v_prefix = '';
+
+        $v_binary_data_first = pack(
+            "a100a8a8a8a12a12",
+            '././@LongLink',
+            0,
+            0,
+            0,
+            $v_size,
+            0
+        );
+        $v_binary_data_last = pack(
+            "a1a100a6a2a32a32a8a8a155a12",
+            $v_typeflag,
+            $v_linkname,
+            $v_magic,
+            $v_version,
+            $v_uname,
+            $v_gname,
+            $v_devmajor,
+            $v_devminor,
+            $v_prefix,
+            ''
+        );
+
+        // ----- Calculate the checksum
+        $v_checksum = 0;
+        // ..... First part of the header
+        for ($i = 0; $i < 148; $i++) {
+            $v_checksum += ord(substr($v_binary_data_first, $i, 1));
+        }
+        // ..... Ignore the checksum value and replace it by ' ' (space)
+        for ($i = 148; $i < 156; $i++) {
+            $v_checksum += ord(' ');
+        }
+        // ..... Last part of the header
+        for ($i = 156, $j = 0; $i < 512; $i++, $j++) {
+            $v_checksum += ord(substr($v_binary_data_last, $j, 1));
+        }
+
+        // ----- Write the first 148 bytes of the header in the archive
+        $this->_writeBlock($v_binary_data_first, 148);
+
+        // ----- Write the calculated checksum
+        $v_checksum = sprintf("%06s ", DecOct($v_checksum));
+        $v_binary_data = pack("a8", $v_checksum);
+        $this->_writeBlock($v_binary_data, 8);
+
+        // ----- Write the last 356 bytes of the header in the archive
+        $this->_writeBlock($v_binary_data_last, 356);
+
+        // ----- Write the filename as content of the block
+        $i = 0;
+        while (($v_buffer = substr($p_filename, (($i++) * 512), 512)) != '') {
+            $v_binary_data = pack("a512", "$v_buffer");
+            $this->_writeBlock($v_binary_data);
+        }
+
+        return true;
+    }
+
+    /**
+     * @param mixed $v_binary_data
+     * @param mixed $v_header
+     * @return bool
+     */
+    public function _readHeader($v_binary_data, &$v_header)
+    {
+        if (strlen($v_binary_data) == 0) {
+            $v_header['filename'] = '';
+            return true;
+        }
+
+        if (strlen($v_binary_data) != 512) {
+            $v_header['filename'] = '';
+            $this->_error('Invalid block size : ' . strlen($v_binary_data));
+            return false;
+        }
+
+        if (!is_array($v_header)) {
+            $v_header = array();
+        }
+        // ----- Calculate the checksum
+        $v_checksum = 0;
+        // ..... First part of the header
+        for ($i = 0; $i < 148; $i++) {
+            $v_checksum += ord(substr($v_binary_data, $i, 1));
+        }
+        // ..... Ignore the checksum value and replace it by ' ' (space)
+        for ($i = 148; $i < 156; $i++) {
+            $v_checksum += ord(' ');
+        }
+        // ..... Last part of the header
+        for ($i = 156; $i < 512; $i++) {
+            $v_checksum += ord(substr($v_binary_data, $i, 1));
+        }
+
+        if (version_compare(PHP_VERSION, "5.5.0-dev") < 0) {
+            $fmt = "a100filename/a8mode/a8uid/a8gid/a12size/a12mtime/" .
+                "a8checksum/a1typeflag/a100link/a6magic/a2version/" .
+                "a32uname/a32gname/a8devmajor/a8devminor/a131prefix";
+        } else {
+            $fmt = "Z100filename/Z8mode/Z8uid/Z8gid/Z12size/Z12mtime/" .
+                "Z8checksum/Z1typeflag/Z100link/Z6magic/Z2version/" .
+                "Z32uname/Z32gname/Z8devmajor/Z8devminor/Z131prefix";
+        }
+        $v_data = unpack($fmt, $v_binary_data);
+
+        if (strlen($v_data["prefix"]) > 0) {
+            $v_data["filename"] = "$v_data[prefix]/$v_data[filename]";
+        }
+
+        // ----- Extract the checksum
+        $v_header['checksum'] = OctDec(trim($v_data['checksum']));
+        if ($v_header['checksum'] != $v_checksum) {
+            $v_header['filename'] = '';
+
+            // ----- Look for last block (empty block)
+            if (($v_checksum == 256) && ($v_header['checksum'] == 0)) {
+                return true;
+            }
+
+            $this->_error(
+                'Invalid checksum for file "' . $v_data['filename']
+                . '" : ' . $v_checksum . ' calculated, '
+                . $v_header['checksum'] . ' expected'
+            );
+            return false;
+        }
+
+        // ----- Extract the properties
+        $v_header['filename'] = rtrim($v_data['filename'], "\0");
+        if ($this->_maliciousFilename($v_header['filename'])) {
+            $this->_error(
+                'Malicious .tar detected, file "' . $v_header['filename'] .
+                '" will not install in desired directory tree'
+            );
+            return false;
+        }
+        $v_header['mode'] = OctDec(trim($v_data['mode']));
+        $v_header['uid'] = OctDec(trim($v_data['uid']));
+        $v_header['gid'] = OctDec(trim($v_data['gid']));
+        $v_header['size'] = OctDec(trim($v_data['size']));
+        $v_header['mtime'] = OctDec(trim($v_data['mtime']));
+        if (($v_header['typeflag'] = $v_data['typeflag']) == "5") {
+            $v_header['size'] = 0;
+        }
+        $v_header['link'] = trim($v_data['link']);
+        /* ----- All these fields are removed form the header because
+        they do not carry interesting info
+        $v_header[magic] = trim($v_data[magic]);
+        $v_header[version] = trim($v_data[version]);
+        $v_header[uname] = trim($v_data[uname]);
+        $v_header[gname] = trim($v_data[gname]);
+        $v_header[devmajor] = trim($v_data[devmajor]);
+        $v_header[devminor] = trim($v_data[devminor]);
+        */
+
+        return true;
+    }
+
+    /**
+     * Detect and report a malicious file name
+     *
+     * @param string $file
+     *
+     * @return bool
+     */
+    private function _maliciousFilename($file)
+    {
+        if (strpos($file, '/../') !== false) {
+            return true;
+        }
+        if (strpos($file, '../') === 0) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * @param $v_header
+     * @return bool
+     */
+    public function _readLongHeader(&$v_header)
+    {
+        $v_filename = '';
+        $v_filesize = $v_header['size'];
+        $n = floor($v_header['size'] / 512);
+        for ($i = 0; $i < $n; $i++) {
+            $v_content = $this->_readBlock();
+            $v_filename .= $v_content;
+        }
+        if (($v_header['size'] % 512) != 0) {
+            $v_content = $this->_readBlock();
+            $v_filename .= $v_content;
+        }
+
+        // ----- Read the next header
+        $v_binary_data = $this->_readBlock();
+
+        if (!$this->_readHeader($v_binary_data, $v_header)) {
+            return false;
+        }
+
+        $v_filename = rtrim(substr($v_filename, 0, $v_filesize), "\0");
+        $v_header['filename'] = $v_filename;
+        if ($this->_maliciousFilename($v_filename)) {
+            $this->_error(
+                'Malicious .tar detected, file "' . $v_filename .
+                '" will not install in desired directory tree'
+            );
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * This method extract from the archive one file identified by $p_filename.
+     * The return value is a string with the file content, or null on error.
+     *
+     * @param string $p_filename The path of the file to extract in a string.
+     *
+     * @return a string with the file content or null.
+     */
+    private function _extractInString($p_filename)
+    {
+        $v_result_str = "";
+
+        while (strlen($v_binary_data = $this->_readBlock()) != 0) {
+            if (!$this->_readHeader($v_binary_data, $v_header)) {
+                return null;
+            }
+
+            if ($v_header['filename'] == '') {
+                continue;
+            }
+
+            // ----- Look for long filename
+            if ($v_header['typeflag'] == 'L') {
+                if (!$this->_readLongHeader($v_header)) {
+                    return null;
+                }
+            }
+
+            if ($v_header['filename'] == $p_filename) {
+                if ($v_header['typeflag'] == "5") {
+                    $this->_error(
+                        'Unable to extract in string a directory '
+                        . 'entry {' . $v_header['filename'] . '}'
+                    );
+                    return null;
+                } else {
+                    $n = floor($v_header['size'] / 512);
+                    for ($i = 0; $i < $n; $i++) {
+                        $v_result_str .= $this->_readBlock();
+                    }
+                    if (($v_header['size'] % 512) != 0) {
+                        $v_content = $this->_readBlock();
+                        $v_result_str .= substr(
+                            $v_content,
+                            0,
+                            ($v_header['size'] % 512)
+                        );
+                    }
+                    return $v_result_str;
+                }
+            } else {
+                $this->_jumpBlock(ceil(($v_header['size'] / 512)));
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * @param string $p_path
+     * @param string $p_list_detail
+     * @param string $p_mode
+     * @param string $p_file_list
+     * @param string $p_remove_path
+     * @param bool $p_preserve
+     * @return bool
+     */
+    public function _extractList(
+        $p_path,
+        &$p_list_detail,
+        $p_mode,
+        $p_file_list,
+        $p_remove_path,
+        $p_preserve = false
+    ) {
+        $v_result = true;
+        $v_nb = 0;
+        $v_extract_all = true;
+        $v_listing = false;
+
+        $p_path = $this->_translateWinPath($p_path, false);
+        if ($p_path == '' || (substr($p_path, 0, 1) != '/'
+                && substr($p_path, 0, 3) != "../" && !strpos($p_path, ':'))
+        ) {
+            $p_path = "./" . $p_path;
+        }
+        $p_remove_path = $this->_translateWinPath($p_remove_path);
+
+        // ----- Look for path to remove format (should end by /)
+        if (($p_remove_path != '') && (substr($p_remove_path, -1) != '/')) {
+            $p_remove_path .= '/';
+        }
+        $p_remove_path_size = strlen($p_remove_path);
+
+        switch ($p_mode) {
+            case "complete" :
+                $v_extract_all = true;
+                $v_listing = false;
+                break;
+            case "partial" :
+                $v_extract_all = false;
+                $v_listing = false;
+                break;
+            case "list" :
+                $v_extract_all = false;
+                $v_listing = true;
+                break;
+            default :
+                $this->_error('Invalid extract mode (' . $p_mode . ')');
+                return false;
+        }
+
+        clearstatcache();
+
+        while (strlen($v_binary_data = $this->_readBlock()) != 0) {
+            $v_extract_file = false;
+            $v_extraction_stopped = 0;
+
+            if (!$this->_readHeader($v_binary_data, $v_header)) {
+                return false;
+            }
+
+            if ($v_header['filename'] == '') {
+                continue;
+            }
+
+            // ----- Look for long filename
+            if ($v_header['typeflag'] == 'L') {
+                if (!$this->_readLongHeader($v_header)) {
+                    return false;
+                }
+            }
+
+            // ignore extended / pax headers
+            if ($v_header['typeflag'] == 'x' || $v_header['typeflag'] == 'g') {
+                $this->_jumpBlock(ceil(($v_header['size'] / 512)));
+                continue;
+            }
+
+            if ((!$v_extract_all) && (is_array($p_file_list))) {
+                // ----- By default no unzip if the file is not found
+                $v_extract_file = false;
+
+                for ($i = 0; $i < sizeof($p_file_list); $i++) {
+                    // ----- Look if it is a directory
+                    if (substr($p_file_list[$i], -1) == '/') {
+                        // ----- Look if the directory is in the filename path
+                        if ((strlen($v_header['filename']) > strlen($p_file_list[$i]))
+                            && (substr($v_header['filename'], 0, strlen($p_file_list[$i]))
+                                == $p_file_list[$i])
+                        ) {
+                            $v_extract_file = true;
+                            break;
+                        }
+                    } // ----- It is a file, so compare the file names
+                    elseif ($p_file_list[$i] == $v_header['filename']) {
+                        $v_extract_file = true;
+                        break;
+                    }
+                }
+            } else {
+                $v_extract_file = true;
+            }
+
+            // ----- Look if this file need to be extracted
+            if (($v_extract_file) && (!$v_listing)) {
+                if (($p_remove_path != '')
+                    && (substr($v_header['filename'] . '/', 0, $p_remove_path_size)
+                        == $p_remove_path)
+                ) {
+                    $v_header['filename'] = substr(
+                        $v_header['filename'],
+                        $p_remove_path_size
+                    );
+                    if ($v_header['filename'] == '') {
+                        continue;
+                    }
+                }
+                if (($p_path != './') && ($p_path != '/')) {
+                    while (substr($p_path, -1) == '/') {
+                        $p_path = substr($p_path, 0, strlen($p_path) - 1);
+                    }
+
+                    if (substr($v_header['filename'], 0, 1) == '/') {
+                        $v_header['filename'] = $p_path . $v_header['filename'];
+                    } else {
+                        $v_header['filename'] = $p_path . '/' . $v_header['filename'];
+                    }
+                }
+                if (file_exists($v_header['filename'])) {
+                    if ((@is_dir($v_header['filename']))
+                        && ($v_header['typeflag'] == '')
+                    ) {
+                        $this->_error(
+                            'File ' . $v_header['filename']
+                            . ' already exists as a directory'
+                        );
+                        return false;
+                    }
+                    if (($this->_isArchive($v_header['filename']))
+                        && ($v_header['typeflag'] == "5")
+                    ) {
+                        $this->_error(
+                            'Directory ' . $v_header['filename']
+                            . ' already exists as a file'
+                        );
+                        return false;
+                    }
+                    if (!is_writeable($v_header['filename'])) {
+                        $this->_error(
+                            'File ' . $v_header['filename']
+                            . ' already exists and is write protected'
+                        );
+                        return false;
+                    }
+                    if (filemtime($v_header['filename']) > $v_header['mtime']) {
+                        // To be completed : An error or silent no replace ?
+                    }
+                } // ----- Check the directory availability and create it if necessary
+                elseif (($v_result
+                        = $this->_dirCheck(
+                        ($v_header['typeflag'] == "5"
+                            ? $v_header['filename']
+                            : dirname($v_header['filename']))
+                    )) != 1
+                ) {
+                    $this->_error('Unable to create path for ' . $v_header['filename']);
+                    return false;
+                }
+
+                if ($v_extract_file) {
+                    if ($v_header['typeflag'] == "5") {
+                        if (!@file_exists($v_header['filename'])) {
+                            if (!@mkdir($v_header['filename'], 0777)) {
+                                $this->_error(
+                                    'Unable to create directory {'
+                                    . $v_header['filename'] . '}'
+                                );
+                                return false;
+                            }
+                        }
+                    } elseif ($v_header['typeflag'] == "2") {
+                        if (@file_exists($v_header['filename'])) {
+                            @drupal_unlink($v_header['filename']);
+                        }
+                        if (!@symlink($v_header['link'], $v_header['filename'])) {
+                            $this->_error(
+                                'Unable to extract symbolic link {'
+                                . $v_header['filename'] . '}'
+                            );
+                            return false;
+                        }
+                    } else {
+                        if (($v_dest_file = @fopen($v_header['filename'], "wb")) == 0) {
+                            $this->_error(
+                                'Error while opening {' . $v_header['filename']
+                                . '} in write binary mode'
+                            );
+                            return false;
+                        } else {
+                            $n = floor($v_header['size'] / 512);
+                            for ($i = 0; $i < $n; $i++) {
+                                $v_content = $this->_readBlock();
+                                fwrite($v_dest_file, $v_content, 512);
+                            }
+                            if (($v_header['size'] % 512) != 0) {
+                                $v_content = $this->_readBlock();
+                                fwrite($v_dest_file, $v_content, ($v_header['size'] % 512));
+                            }
+
+                            @fclose($v_dest_file);
+
+                            if ($p_preserve) {
+                                @chown($v_header['filename'], $v_header['uid']);
+                                @chgrp($v_header['filename'], $v_header['gid']);
+                            }
+
+                            // ----- Change the file mode, mtime
+                            @touch($v_header['filename'], $v_header['mtime']);
+                            if ($v_header['mode'] & 0111) {
+                                // make file executable, obey umask
+                                $mode = fileperms($v_header['filename']) | (~umask() & 0111);
+                                @chmod($v_header['filename'], $mode);
+                            }
+                        }
+
+                        // ----- Check the file size
+                        clearstatcache();
+                        if (!is_file($v_header['filename'])) {
+                            $this->_error(
+                                'Extracted file ' . $v_header['filename']
+                                . 'does not exist. Archive may be corrupted.'
+                            );
+                            return false;
+                        }
+
+                        $filesize = filesize($v_header['filename']);
+                        if ($filesize != $v_header['size']) {
+                            $this->_error(
+                                'Extracted file ' . $v_header['filename']
+                                . ' does not have the correct file size \''
+                                . $filesize
+                                . '\' (' . $v_header['size']
+                                . ' expected). Archive may be corrupted.'
+                            );
+                            return false;
+                        }
+                    }
+                } else {
+                    $this->_jumpBlock(ceil(($v_header['size'] / 512)));
+                }
+            } else {
+                $this->_jumpBlock(ceil(($v_header['size'] / 512)));
+            }
+
+            /* TBC : Seems to be unused ...
+            if ($this->_compress)
+              $v_end_of_file = @gzeof($this->_file);
+            else
+              $v_end_of_file = @feof($this->_file);
+              */
+
+            if ($v_listing || $v_extract_file || $v_extraction_stopped) {
+                // ----- Log extracted files
+                if (($v_file_dir = dirname($v_header['filename']))
+                    == $v_header['filename']
+                ) {
+                    $v_file_dir = '';
+                }
+                if ((substr($v_header['filename'], 0, 1) == '/') && ($v_file_dir == '')) {
+                    $v_file_dir = '/';
+                }
+
+                $p_list_detail[$v_nb++] = $v_header;
+                if (is_array($p_file_list) && (count($p_list_detail) == count($p_file_list))) {
+                    return true;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * @return bool
+     */
+    public function _openAppend()
+    {
+        if (filesize($this->_tarname) == 0) {
+            return $this->_openWrite();
+        }
+
+        if ($this->_compress) {
+            $this->_close();
+
+            if (!@rename($this->_tarname, $this->_tarname . ".tmp")) {
+                $this->_error(
+                    'Error while renaming \'' . $this->_tarname
+                    . '\' to temporary file \'' . $this->_tarname
+                    . '.tmp\''
+                );
+                return false;
+            }
+
+            if ($this->_compress_type == 'gz') {
+                $v_temp_tar = @gzopen($this->_tarname . ".tmp", "rb");
+            } elseif ($this->_compress_type == 'bz2') {
+                $v_temp_tar = @bzopen($this->_tarname . ".tmp", "r");
+            } elseif ($this->_compress_type == 'lzma2') {
+                $v_temp_tar = @xzopen($this->_tarname . ".tmp", "r");
+            }
+
+
+            if ($v_temp_tar == 0) {
+                $this->_error(
+                    'Unable to open file \'' . $this->_tarname
+                    . '.tmp\' in binary read mode'
+                );
+                @rename($this->_tarname . ".tmp", $this->_tarname);
+                return false;
+            }
+
+            if (!$this->_openWrite()) {
+                @rename($this->_tarname . ".tmp", $this->_tarname);
+                return false;
+            }
+
+            if ($this->_compress_type == 'gz') {
+                $end_blocks = 0;
+
+                while (!@gzeof($v_temp_tar)) {
+                    $v_buffer = @gzread($v_temp_tar, 512);
+                    if ($v_buffer == ARCHIVE_TAR_END_BLOCK || strlen($v_buffer) == 0) {
+                        $end_blocks++;
+                        // do not copy end blocks, we will re-make them
+                        // after appending
+                        continue;
+                    } elseif ($end_blocks > 0) {
+                        for ($i = 0; $i < $end_blocks; $i++) {
+                            $this->_writeBlock(ARCHIVE_TAR_END_BLOCK);
+                        }
+                        $end_blocks = 0;
+                    }
+                    $v_binary_data = pack("a512", $v_buffer);
+                    $this->_writeBlock($v_binary_data);
+                }
+
+                @gzclose($v_temp_tar);
+            } elseif ($this->_compress_type == 'bz2') {
+                $end_blocks = 0;
+
+                while (strlen($v_buffer = @bzread($v_temp_tar, 512)) > 0) {
+                    if ($v_buffer == ARCHIVE_TAR_END_BLOCK || strlen($v_buffer) == 0) {
+                        $end_blocks++;
+                        // do not copy end blocks, we will re-make them
+                        // after appending
+                        continue;
+                    } elseif ($end_blocks > 0) {
+                        for ($i = 0; $i < $end_blocks; $i++) {
+                            $this->_writeBlock(ARCHIVE_TAR_END_BLOCK);
+                        }
+                        $end_blocks = 0;
+                    }
+                    $v_binary_data = pack("a512", $v_buffer);
+                    $this->_writeBlock($v_binary_data);
+                }
+
+                @bzclose($v_temp_tar);
+            } elseif ($this->_compress_type == 'lzma2') {
+                $end_blocks = 0;
+
+                while (strlen($v_buffer = @xzread($v_temp_tar, 512)) > 0) {
+                    if ($v_buffer == ARCHIVE_TAR_END_BLOCK || strlen($v_buffer) == 0) {
+                        $end_blocks++;
+                        // do not copy end blocks, we will re-make them
+                        // after appending
+                        continue;
+                    } elseif ($end_blocks > 0) {
+                        for ($i = 0; $i < $end_blocks; $i++) {
+                            $this->_writeBlock(ARCHIVE_TAR_END_BLOCK);
+                        }
+                        $end_blocks = 0;
+                    }
+                    $v_binary_data = pack("a512", $v_buffer);
+                    $this->_writeBlock($v_binary_data);
+                }
+
+                @xzclose($v_temp_tar);
+            }
+
+            if (!@drupal_unlink($this->_tarname . ".tmp")) {
+                $this->_error(
+                    'Error while deleting temporary file \''
+                    . $this->_tarname . '.tmp\''
+                );
+            }
+        } else {
+            // ----- For not compressed tar, just add files before the last
+            //       one or two 512 bytes block
+            if (!$this->_openReadWrite()) {
+                return false;
+            }
+
+            clearstatcache();
+            $v_size = filesize($this->_tarname);
+
+            // We might have zero, one or two end blocks.
+            // The standard is two, but we should try to handle
+            // other cases.
+            fseek($this->_file, $v_size - 1024);
+            if (fread($this->_file, 512) == ARCHIVE_TAR_END_BLOCK) {
+                fseek($this->_file, $v_size - 1024);
+            } elseif (fread($this->_file, 512) == ARCHIVE_TAR_END_BLOCK) {
+                fseek($this->_file, $v_size - 512);
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * @param $p_filelist
+     * @param string $p_add_dir
+     * @param string $p_remove_dir
+     * @return bool
+     */
+    public function _append($p_filelist, $p_add_dir = '', $p_remove_dir = '')
+    {
+        if (!$this->_openAppend()) {
+            return false;
+        }
+
+        if ($this->_addList($p_filelist, $p_add_dir, $p_remove_dir)) {
+            $this->_writeFooter();
+        }
+
+        $this->_close();
+
+        return true;
+    }
+
+    /**
+     * Check if a directory exists and create it (including parent
+     * dirs) if not.
+     *
+     * @param string $p_dir directory to check
+     *
+     * @return bool true if the directory exists or was created
+     */
+    public function _dirCheck($p_dir)
+    {
+        clearstatcache();
+        if ((@is_dir($p_dir)) || ($p_dir == '')) {
+            return true;
+        }
+
+        $p_parent_dir = dirname($p_dir);
+
+        if (($p_parent_dir != $p_dir) &&
+            ($p_parent_dir != '') &&
+            (!$this->_dirCheck($p_parent_dir))
+        ) {
+            return false;
+        }
+
+        if (!@mkdir($p_dir, 0777)) {
+            $this->_error("Unable to create directory '$p_dir'");
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Compress path by changing for example "/dir/foo/../bar" to "/dir/bar",
+     * rand emove double slashes.
+     *
+     * @param string $p_dir path to reduce
+     *
+     * @return string reduced path
+     */
+    private function _pathReduction($p_dir)
+    {
+        $v_result = '';
+
+        // ----- Look for not empty path
+        if ($p_dir != '') {
+            // ----- Explode path by directory names
+            $v_list = explode('/', $p_dir);
+
+            // ----- Study directories from last to first
+            for ($i = sizeof($v_list) - 1; $i >= 0; $i--) {
+                // ----- Look for current path
+                if ($v_list[$i] == ".") {
+                    // ----- Ignore this directory
+                    // Should be the first $i=0, but no check is done
+                } else {
+                    if ($v_list[$i] == "..") {
+                        // ----- Ignore it and ignore the $i-1
+                        $i--;
+                    } else {
+                        if (($v_list[$i] == '')
+                            && ($i != (sizeof($v_list) - 1))
+                            && ($i != 0)
+                        ) {
+                            // ----- Ignore only the double '//' in path,
+                            // but not the first and last /
+                        } else {
+                            $v_result = $v_list[$i] . ($i != (sizeof($v_list) - 1) ? '/'
+                                    . $v_result : '');
+                        }
+                    }
+                }
+            }
+        }
+
+        if (defined('OS_WINDOWS') && OS_WINDOWS) {
+            $v_result = strtr($v_result, '\\', '/');
+        }
+
+        return $v_result;
+    }
+
+    /**
+     * @param $p_path
+     * @param bool $p_remove_disk_letter
+     * @return string
+     */
+    public function _translateWinPath($p_path, $p_remove_disk_letter = true)
+    {
+        if (defined('OS_WINDOWS') && OS_WINDOWS) {
+            // ----- Look for potential disk letter
+            if (($p_remove_disk_letter)
+                && (($v_position = strpos($p_path, ':')) != false)
+            ) {
+                $p_path = substr($p_path, $v_position + 1);
+            }
+            // ----- Change potential windows directory separator
+            if ((strpos($p_path, '\\') > 0) || (substr($p_path, 0, 1) == '\\')) {
+                $p_path = strtr($p_path, '\\', '/');
+            }
+        }
+        return $p_path;
+    }
+}
+}