<?php
// --------------------------------------------------------------------------------
// PhpConcept Library - Tar Module 1.3.1
// --------------------------------------------------------------------------------
// License GNU/GPL - Vincent Blavet - January 2003
// http://www.phpconcept.net
// --------------------------------------------------------------------------------
//
// Presentation :
//   PclTar is a library that allow you to create a GNU TAR + GNU ZIP archive,
//   to add files or directories, to extract all the archive or a part of it.
//   So far tests show that the files generated by PclTar are readable by
//   gzip tools and WinZip application.
//
// Description :
//   See readme.txt (English & Fran�ais) and http://www.phpconcept.net
//
// Warning :
//   This library and the associated files are non commercial, non professional
//   work.
//   It should not have unexpected results. However if any damage is caused by
//   this software the author can not be responsible.
//   The use of this software is at the risk of the user.
//
// --------------------------------------------------------------------------------

// ----- Look for double include
if (!defined("PCL_TAR")) {
	define("PCL_TAR", 1);

	// ----- Configuration variable
	// Theses values may be changed by the user of PclTar library
	if (!isset($g_pcltar_lib_dir)) {
		$g_pcltar_lib_dir = find_in_path("lib/pcltar");
	}

	// ----- Error codes
	//   -1 : Unable to open file in binary write mode
	//   -2 : Unable to open file in binary read mode
	//   -3 : Invalid parameters
	//   -4 : File does not exist
	//   -5 : Filename is too long (max. 99)
	//   -6 : Not a valid tar file
	//   -7 : Invalid extracted file size
	//   -8 : Unable to create directory
	//   -9 : Invalid archive extension
	//  -10 : Invalid archive format
	//  -11 : Unable to delete file (unlink)
	//  -12 : Unable to rename file (rename)
	//  -13 : Invalid header checksum


// --------------------------------------------------------------------------------
// ***** UNDER THIS LINE NOTHING NEEDS TO BE MODIFIED *****
// --------------------------------------------------------------------------------

	// ----- Global variables
	$g_pcltar_version = "1.3.1";

	// ----- Extract extension type (.php3/.php/...)
	$g_pcltar_extension = "php";

	// ----- Include other libraries
	// This library should be called by each script before the include of PhpZip
	// Library in order to limit the potential 'lib' directory path problem.
	if (!defined("PCLERROR_LIB")) {
		include($g_pcltar_lib_dir . "/pclerror.lib." . $g_pcltar_extension);
	}
	if (!defined("PCLTRACE_LIB")) {
		include($g_pcltar_lib_dir . "/pcltrace.lib." . $g_pcltar_extension);
	}

	// --------------------------------------------------------------------------------
	// Function : PclTarCreate()
	// Description :
	//   Creates a new archive with name $p_tarname containing the files and/or
	//   directories indicated in $p_list. If the tar filename extension is
	//   ".tar", the file will not be compressed. If it is ".tar.gz" or ".tgz"
	//   it will be a gzip compressed tar archive.
	//   If you want to use an other extension, you must indicate the mode in
	//   $p_mode ("tar" or "tgz").
	//   $p_add_dir and $p_remove_dir give you the ability to store a path
	//   which is not the real path of the files.
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_filelist : An array containing file or directory names, or
	//                 a string containing one filename or directory name, or
	//                 a string containing a list of filenames and/or directory
	//                 names separated by spaces.
	//   $p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive,
	//             if $p_mode is not specified, it will be determined by the extension.
	//   $p_add_dir : Path to add in the filename path archived
	//   $p_remove_dir : Path to remove in the filename path archived
	// Return Values :
	//   1 on success, or an error code (see table at the beginning).
	// --------------------------------------------------------------------------------
	function PclTarCreate($p_tarname, $p_filelist = "", $p_mode = "", $p_add_dir = "", $p_remove_dir = "") {
		$trace_file_list = (is_array($p_filelist) ? implode(' ', $p_filelist) : $p_filelist);
		TrFctStart(__FILE__, __LINE__, "PclTarCreate",
			"tar=$p_tarname, file='$trace_file_list', mode=$p_mode, add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
		$v_result = 1;

		// ----- Look for default mode
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			// ----- Extract the tar format from the extension
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Trace
			TrFctMessage(__FILE__, __LINE__, 1, "Auto mode selected : found $p_mode");
		}

		// ----- Look if the $p_filelist is really an array
		if (is_array($p_filelist)) {
			// ----- Call the create fct
			$v_result = PclTarHandleCreate($p_tarname, $p_filelist, $p_mode, $p_add_dir, $p_remove_dir);
		} // ----- Look if the $p_filelist is a string
		else {
			if (is_string($p_filelist)) {
				// ----- Create a list with the elements from the string
				$v_list = explode(" ", $p_filelist);

				// ----- Call the create fct
				$v_result = PclTarHandleCreate($p_tarname, $v_list, $p_mode, $p_add_dir, $p_remove_dir);
			} // ----- Invalid variable
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid variable type p_filelist");
				$v_result = -3;
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarAdd()
	// Description :
	//   PLEASE DO NOT USE ANY MORE THIS FUNCTION. Use PclTarAddList().
	//
	//   This function is maintained only for compatibility reason
	//
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_filelist : An array containing file or directory names, or
	//                 a string containing one filename or directory name, or
	//                 a string containing a list of filenames and/or directory
	//                 names separated by spaces.
	// Return Values :
	//   1 on success,
	//   Or an error code (see list on top).
	// --------------------------------------------------------------------------------
	function PclTarAdd($p_tarname, $p_filelist) {
		TrFctStart(__FILE__, __LINE__, "PclTarAdd", "tar=$p_tarname, file=$p_filelist");
		$v_result = 1;
		$v_list_detail = array();

		// ----- Extract the tar format from the extension
		if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Look if the $p_filelist is really an array
		if (is_array($p_filelist)) {
			// ----- Call the add fct
			$v_result = PclTarHandleAppend($p_tarname, $p_filelist, $p_mode, $v_list_detail, "", "");
		} // ----- Look if the $p_filelist is a string
		else {
			if (is_string($p_filelist)) {
				// ----- Create a list with the elements from the string
				$v_list = explode(" ", $p_filelist);

				// ----- Call the add fct
				$v_result = PclTarHandleAppend($p_tarname, $v_list, $p_mode, $v_list_detail, "", "");
			} // ----- Invalid variable
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid variable type p_filelist");
				$v_result = -3;
			}
		}

		// ----- Cleaning
		unset($v_list_detail);

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarAddList()
	// Description :
	//   Add a list of files or directories ($p_filelist) in the tar archive $p_tarname.
	//   The list can be an array of file/directory names or a string with names
	//   separated by one space.
	//   $p_add_dir and $p_remove_dir will give the ability to memorize a path which is
	//   different from the real path of the file. This is usefull if you want to have PclTar
	//   running in any directory, and memorize relative path from an other directory.
	//   If $p_mode is not set it will be automatically computed from the $p_tarname
	//   extension (.tar, .tar.gz or .tgz).
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_filelist : An array containing file or directory names, or
	//                 a string containing one filename or directory name, or
	//                 a string containing a list of filenames and/or directory
	//                 names separated by spaces.
	//   $p_add_dir : Path to add in the filename path archived
	//   $p_remove_dir : Path to remove in the filename path archived
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	// Return Values :
	//   1 on success,
	//   Or an error code (see list on top).
	// --------------------------------------------------------------------------------
	function PclTarAddList($p_tarname, $p_filelist, $p_add_dir = "", $p_remove_dir = "", $p_mode = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarAddList",
			"tar=$p_tarname, file=$p_filelist, p_add_dir='$p_add_dir', p_remove_dir='$p_remove_dir', mode=$p_mode");
		$v_result = 1;
		$p_list_detail = array();

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}
		}

		// ----- Look if the $p_filelist is really an array
		if (is_array($p_filelist)) {
			// ----- Call the add fct
			$v_result = PclTarHandleAppend($p_tarname, $p_filelist, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir);
		} // ----- Look if the $p_filelist is a string
		else {
			if (is_string($p_filelist)) {
				// ----- Create a list with the elements from the string
				$v_list = explode(" ", $p_filelist);

				// ----- Call the add fct
				$v_result = PclTarHandleAppend($p_tarname, $v_list, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir);
			} // ----- Invalid variable
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid variable type p_filelist");
				$v_result = -3;
			}
		}

		// ----- Return
		if ($v_result != 1) {
			TrFctEnd(__FILE__, __LINE__, 0);

			return 0;
		}
		TrFctEnd(__FILE__, __LINE__, $p_list_detail);

		return $p_list_detail;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarList()
	// Description :
	//   Gives the list of all the files present in the tar archive $p_tarname.
	//   The list is the function result, it will be 0 on error.
	//   Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
	//   function will determine the type of the archive.
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	// Return Values :
	//  0 on error (Use PclErrorCode() and PclErrorString() for more info)
	//  or
	//  An array containing file properties. Each file properties is an array of
	//  properties.
	//  The properties (array field names) are :
	//    filename, size, mode, uid, gid, mtime, typeflag, status
	//  Exemple : $v_list = PclTarList("my.tar");
	//            for ($i=0; $i<sizeof($v_list); $i++)
	//              echo "Filename :'".$v_list[$i]['filename']."'<br>";
	// --------------------------------------------------------------------------------
	function PclTarList($p_tarname, $p_mode = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarList", "tar=$p_tarname, mode='$p_mode'");
		$v_result = 1;

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Call the extracting fct
		$p_list = array();
		if (($v_result = PclTarHandleExtract($p_tarname, 0, $p_list, "list", "", $p_mode, "")) != 1) {
			unset($p_list);
			TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

			return (0);
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $p_list);

		return $p_list;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarExtract()
	// Description :
	//   Extract all the files present in the archive $p_tarname, in the directory
	//   $p_path. The relative path of the archived files are keep and become
	//   relative to $p_path.
	//   If a file with the same name already exists it will be replaced.
	//   If the path to the file does not exist, it will be created.
	//   Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
	//   function will determine the type of the archive.
	// Parameters :
	//   $p_tarname : Name of an existing tar file.
	//   $p_path : Path where the files will be extracted. The files will use
	//             their memorized path from $p_path.
	//             If $p_path is "", files will be extracted in "./".
	//   $p_remove_path : Path to remove (from the file memorized path) while writing the
	//                    extracted files. If the path does not match the file path,
	//                    the file is extracted with its memorized path.
	//                    $p_path and $p_remove_path are commulative.
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	// Return Values :
	//   Same as PclTarList()
	// --------------------------------------------------------------------------------
	function PclTarExtract($p_tarname, $p_path = "./", $p_remove_path = "", $p_mode = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarExtract",
			"tar='$p_tarname', path='$p_path', remove_path='$p_remove_path', mode='$p_mode'");
		$v_result = 1;

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Call the extracting fct
		if (($v_result = PclTarHandleExtract($p_tarname, 0, $p_list, "complete", $p_path, $p_mode,
				$p_remove_path)) != 1
		) {
			TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

			return (0);
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $p_list);

		return $p_list;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarExtractList()
	// Description :
	//   Extract the files present in the archive $p_tarname and specified in
	//   $p_filelist, in the directory
	//   $p_path. The relative path of the archived files are keep and become
	//   relative to $p_path.
	//   If a directory is sp�cified in the list, all the files from this directory
	//   will be extracted.
	//   If a file with the same name already exists it will be replaced.
	//   If the path to the file does not exist, it will be created.
	//   Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
	//   function will determine the type of the archive.
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_filelist : An array containing file or directory names, or
	//                 a string containing one filename or directory name, or
	//                 a string containing a list of filenames and/or directory
	//                 names separated by spaces.
	//   $p_path : Path where the files will be extracted. The files will use
	//             their memorized path from $p_path.
	//             If $p_path is "", files will be extracted in "./".
	//   $p_remove_path : Path to remove (from the file memorized path) while writing the
	//                    extracted files. If the path does not match the file path,
	//                    the file is extracted with its memorized path.
	//                    $p_path and $p_remove_path are commulative.
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	// Return Values :
	//   Same as PclTarList()
	// --------------------------------------------------------------------------------
	function PclTarExtractList($p_tarname, $p_filelist, $p_path = "./", $p_remove_path = "", $p_mode = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarExtractList",
			"tar=$p_tarname, list, path=$p_path, remove_path='$p_remove_path', mode='$p_mode'");
		$v_result = 1;

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Look if the $p_filelist is really an array
		if (is_array($p_filelist)) {
			// ----- Call the extracting fct
			if (($v_result = PclTarHandleExtract($p_tarname, $p_filelist, $p_list, "partial", $p_path, $p_mode,
					$p_remove_path)) != 1
			) {
				TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

				return (0);
			}
		} // ----- Look if the $p_filelist is a string
		else {
			if (is_string($p_filelist)) {
				// ----- Create a list with the elements from the string
				$v_list = explode(" ", $p_filelist);

				// ----- Call the extracting fct
				if (($v_result = PclTarHandleExtract($p_tarname, $v_list, $p_list, "partial", $p_path, $p_mode,
						$p_remove_path)) != 1
				) {
					TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

					return (0);
				}
			} // ----- Invalid variable
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid variable type p_filelist");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $p_list);

		return $p_list;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarExtractIndex()
	// Description :
	//   Extract the files present in the archive $p_tarname and specified at
	//   the indexes in $p_index, in the directory
	//   $p_path. The relative path of the archived files are keep and become
	//   relative to $p_path.
	//   If a directory is specified in the list, the directory only is created. All
	//   the file stored in this archive for this directory
	//   are not extracted.
	//   If a file with the same name already exists it will be replaced.
	//   If the path to the file does not exist, it will be created.
	//   Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
	//   function will determine the type of the archive.
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_index : A single index (integer) or a string of indexes of files to
	//              extract. The form of the string is "0,4-6,8-12" with only numbers
	//              and '-' for range or ',' to separate ranges. No spaces or ';'
	//              are allowed.
	//   $p_path : Path where the files will be extracted. The files will use
	//             their memorized path from $p_path.
	//             If $p_path is "", files will be extracted in "./".
	//   $p_remove_path : Path to remove (from the file memorized path) while writing the
	//                    extracted files. If the path does not match the file path,
	//                    the file is extracted with its memorized path.
	//                    $p_path and $p_remove_path are commulative.
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	// Return Values :
	//   Same as PclTarList()
	// --------------------------------------------------------------------------------
	function PclTarExtractIndex($p_tarname, $p_index, $p_path = "./", $p_remove_path = "", $p_mode = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarExtractIndex",
			"tar=$p_tarname, index='$p_index', path=$p_path, remove_path='$p_remove_path', mode='$p_mode'");
		$v_result = 1;

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Look if the $p_index is really an integer
		if (is_integer($p_index)) {
			// ----- Call the extracting fct
			if (($v_result = PclTarHandleExtractByIndexList($p_tarname, "$p_index", $p_list, $p_path, $p_remove_path,
					$p_mode)) != 1
			) {
				TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

				return (0);
			}
		} // ----- Look if the $p_filelist is a string
		else {
			if (is_string($p_index)) {
				// ----- Call the extracting fct
				if (($v_result = PclTarHandleExtractByIndexList($p_tarname, $p_index, $p_list, $p_path, $p_remove_path,
						$p_mode)) != 1
				) {
					TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

					return (0);
				}
			} // ----- Invalid variable
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid variable type $p_index");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $p_list);

		return $p_list;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarDelete()
	// Description :
	//   This function deletes from the archive $p_tarname the files which are listed
	//   in $p_filelist. $p_filelist can be a string with file names separated by
	//   spaces, or an array containing the file names.
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_filelist : An array or a string containing file names to remove from the
	//                 archive.
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	// Return Values :
	//   List of the files which are kept in the archive (same format as PclTarList())
	// --------------------------------------------------------------------------------
	function PclTarDelete($p_tarname, $p_filelist, $p_mode = "") {
		$trace_file_list = (is_array($p_filelist) ? implode(' ', $p_filelist) : $p_filelist);
		TrFctStart(__FILE__, __LINE__, "PclTarDelete", "tar='$p_tarname', list='$trace_file_list', mode='$p_mode'");
		$v_result = 1;

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Look if the $p_filelist is really an array
		if (is_array($p_filelist)) {
			// ----- Call the extracting fct
			if (($v_result = PclTarHandleDelete($p_tarname, $p_filelist, $p_list, $p_mode)) != 1) {
				TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

				return (0);
			}
		} // ----- Look if the $p_filelist is a string
		else {
			if (is_string($p_filelist)) {
				// ----- Create a list with the elements from the string
				$v_list = explode(" ", $p_filelist);

				// ----- Call the extracting fct
				if (($v_result = PclTarHandleDelete($p_tarname, $v_list, $p_list, $p_mode)) != 1) {
					TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

					return (0);
				}
			} // ----- Invalid variable
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid variable type p_filelist");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $p_list);

		return $p_list;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarUpdate()
	// Description :
	//   This function updates the files in $p_filelist which are already in the
	//   $p_tarname archive with an older last modified date. If the file does not
	//   exist, it is added at the end of the archive.
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_filelist : An array or a string containing file names to update from the
	//                 archive.
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	// Return Values :
	//   List of the files contained in the archive. The field status contains
	//   "updated", "not_updated", "added" or "ok" for the files not concerned.
	// --------------------------------------------------------------------------------
	function PclTarUpdate($p_tarname, $p_filelist, $p_mode = "", $p_add_dir = "", $p_remove_dir = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarUpdate", "tar='$p_tarname', list='$p_filelist', mode='$p_mode'");
		$v_result = 1;

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Look if the $p_filelist is really an array
		if (is_array($p_filelist)) {
			// ----- Call the extracting fct
			if (($v_result = PclTarHandleUpdate($p_tarname, $p_filelist, $p_list, $p_mode, $p_add_dir, $p_remove_dir)) != 1) {
				TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

				return (0);
			}
		} // ----- Look if the $p_filelist is a string
		else {
			if (is_string($p_filelist)) {
				// ----- Create a list with the elements from the string
				$v_list = explode(" ", $p_filelist);

				// ----- Call the extracting fct
				if (($v_result = PclTarHandleUpdate($p_tarname, $v_list, $p_list, $p_mode, $p_add_dir, $p_remove_dir)) != 1) {
					TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());

					return (0);
				}
			} // ----- Invalid variable
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid variable type p_filelist");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $p_list);

		return $p_list;
	}

	// --------------------------------------------------------------------------------


	// --------------------------------------------------------------------------------
	// Function : PclTarMerge()
	// Description :
	//   This function add the content of $p_tarname_add at the end of $p_tarname.
	// Parameters :
	//   $p_tarname : Name of an existing tar file
	//   $p_tarname_add : Name of an existing tar file taht will be added at the end
	//                    of $p_tarname.
	//   $p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
	//   $p_mode_add : 'tar' or 'tgz', if not set, will be determined by $p_tarname_add
	//                 extension
	// Return Values :
	//   List of the files contained in the archive. The field status contains
	//   "updated", "not_updated", "added" or "ok" for the files not concerned.
	// --------------------------------------------------------------------------------
	function PclTarMerge($p_tarname, $p_tarname_add, $p_mode = "", $p_mode_add = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarMerge",
			"tar='$p_tarname', tar_add='$p_tarname_add', mode='$p_mode', mode_add='$p_mode_add'");
		$v_result = 1;

		// ----- Check the parameters
		if (($p_tarname == "") || ($p_tarname_add == "")) {
			// ----- Error log
			PclErrorLog(-3, "Invalid empty archive name");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Extract the tar format from the extension
		if (($p_mode == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			if (($p_mode = PclTarHandleExtension($p_tarname)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}
		if (($p_mode_add == "") || (($p_mode_add != "tar") && ($p_mode_add != "tgz"))) {
			if (($p_mode_add = PclTarHandleExtension($p_tarname_add)) == "") {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return 0;
			}
		}

		// ----- Clear filecache
		clearstatcache();

		// ----- Check the file size
		if ((!is_file($p_tarname)) ||
			(((($v_size = filesize($p_tarname)) % 512) != 0) && ($p_mode == "tar"))
		) {
			// ----- Error log
			if (!is_file($p_tarname)) {
				PclErrorLog(-4, "Archive '$p_tarname' does not exist");
			} else {
				PclErrorLog(-6, "Archive '$p_tarname' has invalid size " . filesize($p_tarname) . "(not a 512 block multiple)");
			}

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}
		if ((!is_file($p_tarname_add)) ||
			(((($v_size_add = filesize($p_tarname_add)) % 512) != 0) && ($p_mode_add == "tar"))
		) {
			// ----- Error log
			if (!is_file($p_tarname_add)) {
				PclErrorLog(-4, "Archive '$p_tarname_add' does not exist");
			} else {
				PclErrorLog(-6,
					"Archive '$p_tarname_add' has invalid size " . filesize($p_tarname_add) . "(not a 512 block multiple)");
			}

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Look for compressed archive
		if ($p_mode == "tgz") {
			// ----- Open the file in read mode
			if (($p_tar = @gzopen($p_tarname, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Open a temporary file in write mode
			$v_temp_tarname = uniqid("pcltar-") . ".tmp";
			TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
			if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0) {
				// ----- Close tar file
				gzclose($p_tar);

				// ----- Error log
				PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Read the first 512 bytes block
			$v_buffer = gzread($p_tar, 512);

			// ----- Read the following blocks but not the last one
			if (!gzeof($p_tar)) {
				TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
				$i = 1;

				// ----- Read new 512 block and write the already read
				do {
					// ----- Write the already read block
					$v_binary_data = pack("a512", "$v_buffer");
					gzputs($v_temp_tar, $v_binary_data);

					$i++;
					TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

					// ----- Read next block
					$v_buffer = gzread($p_tar, 512);

				} while (!gzeof($p_tar));

				TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
			}
		} // ----- Look for uncompressed tar file
		else {
			if ($p_mode == "tar") {
				// ----- Open the tar file
				if (($p_tar = fopen($p_tarname, "r+b")) == 0) {
					// ----- Error log
					PclErrorLog(-1, "Unable to open file '$p_tarname' in binary write mode");

					// ----- Return
					TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

					return PclErrorCode();
				}

				// ----- Go to the beginning of last block
				TrFctMessage(__FILE__, __LINE__, 4, "Position before :" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));
				fseek($p_tar, $v_size - 512);
				TrFctMessage(__FILE__, __LINE__, 4, "Position after :" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));
			} // ----- Look for unknown type
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid tar mode $p_mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}
		}

		// ----- Look for type of archive to add
		if ($p_mode_add == "tgz") {
			TrFctMessage(__FILE__, __LINE__, 4, "Opening file $p_tarname_add");

			// ----- Open the file in read mode
			if (($p_tar_add = @gzopen($p_tarname_add, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_tarname_add' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Read the first 512 bytes block
			$v_buffer = gzread($p_tar_add, 512);

			// ----- Read the following blocks but not the last one
			if (!gzeof($p_tar_add)) {
				TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
				$i = 1;

				// ----- Read new 512 block and write the already read
				do {
					// ----- Write the already read block
					$v_binary_data = pack("a512", "$v_buffer");
					if ($p_mode == "tar") {
						fputs($p_tar, $v_binary_data);
					} else {
						gzputs($v_temp_tar, $v_binary_data);
					}

					$i++;
					TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

					// ----- Read next block
					$v_buffer = gzread($p_tar_add, 512);

				} while (!gzeof($p_tar_add));

				TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
			}

			// ----- Close the files
			gzclose($p_tar_add);
		} // ----- Look for uncompressed tar file
		else {
			if ($p_mode == "tar") {
				// ----- Open the file in read mode
				if (($p_tar_add = @fopen($p_tarname_add, "rb")) == 0) {
					// ----- Error log
					PclErrorLog(-2, "Unable to open file '$p_tarname_add' in binary read mode");

					// ----- Return
					TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

					return PclErrorCode();
				}

				// ----- Read the first 512 bytes block
				$v_buffer = fread($p_tar_add, 512);

				// ----- Read the following blocks but not the last one
				if (!feof($p_tar_add)) {
					TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
					$i = 1;

					// ----- Read new 512 block and write the already read
					do {
						// ----- Write the already read block
						$v_binary_data = pack("a512", "$v_buffer");
						if ($p_mode == "tar") {
							fputs($p_tar, $v_binary_data);
						} else {
							gzputs($v_temp_tar, $v_binary_data);
						}

						$i++;
						TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

						// ----- Read next block
						$v_buffer = fread($p_tar_add, 512);

					} while (!feof($p_tar_add));

					TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
				}

				// ----- Close the files
				fclose($p_tar_add);
			}
		}

		// ----- Call the footer of the tar archive
		$v_result = PclTarHandleFooter($p_tar, $p_mode);

		// ----- Look for closing compressed archive
		if ($p_mode == "tgz") {
			// ----- Close the files
			gzclose($p_tar);
			gzclose($v_temp_tar);

			// ----- Unlink tar file
			if (!@unlink($p_tarname)) {
				// ----- Error log
				PclErrorLog(-11, "Error while deleting archive name $p_tarname");
			}

			// ----- Rename tar file
			if (!@rename($v_temp_tarname, $p_tarname)) {
				// ----- Error log
				PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, $v_result);

			return $v_result;
		} // ----- Look for closing uncompressed tar file
		else {
			if ($p_mode == "tar") {
				// ----- Close the tarfile
				fclose($p_tar);
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------


// --------------------------------------------------------------------------------
// ***** UNDER THIS LINE ARE DEFINED PRIVATE INTERNAL FUNCTIONS *****
// *****                                                        *****
// *****       THESES FUNCTIONS MUST NOT BE USED DIRECTLY       *****
// --------------------------------------------------------------------------------


	// --------------------------------------------------------------------------------
	// Function : PclTarHandleCreate()
	// Description :
	// Parameters :
	//   $p_tarname : Name of the tar file
	//   $p_list : An array containing the file or directory names to add in the tar
	//   $p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleCreate($p_tarname, $p_list, $p_mode, $p_add_dir = "", $p_remove_dir = "") {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleCreate",
			"tar=$p_tarname, list, mode=$p_mode, add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
		$v_result = 1;
		$v_list_detail = array();

		// ----- Check the parameters
		if (($p_tarname == "") || (($p_mode != "tar") && ($p_mode != "tgz"))) {
			// ----- Error log
			if ($p_tarname == "") {
				PclErrorLog(-3, "Invalid empty archive name");
			} else {
				PclErrorLog(-3, "Unknown mode '$p_mode'");
			}

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Look for tar file
		if ($p_mode == "tar") {
			// ----- Open the tar file
			if (($p_tar = fopen($p_tarname, "wb")) == 0) {
				// ----- Error log
				PclErrorLog(-1, "Unable to open file [$p_tarname] in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Call the adding fct inside the tar
			if (($v_result = PclTarHandleAddList($p_tar, $p_list, $p_mode, $v_list_detail, $p_add_dir, $p_remove_dir)) == 1) {
				// ----- Call the footer of the tar archive
				$v_result = PclTarHandleFooter($p_tar, $p_mode);
			}

			// ----- Close the tarfile
			fclose($p_tar);
		} // ----- Look for tgz file
		else {
			// ----- Open the tar file
			if (($p_tar = @gzopen($p_tarname, "wb")) == 0) {
				// ----- Error log
				PclErrorLog(-1, "Unable to open file [$p_tarname] in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Call the adding fct inside the tar
			if (($v_result = PclTarHandleAddList($p_tar, $p_list, $p_mode, $v_list_detail, $p_add_dir, $p_remove_dir)) == 1) {
				// ----- Call the footer of the tar archive
				$v_result = PclTarHandleFooter($p_tar, $p_mode);
			}

			// ----- Close the tarfile
			gzclose($p_tar);
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleAppend()
	// Description :
	// Parameters :
	//   $p_tarname : Name of the tar file
	//   $p_list : An array containing the file or directory names to add in the tar
	//   $p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleAppend($p_tarname, $p_list, $p_mode, &$p_list_detail, $p_add_dir, $p_remove_dir) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleAppend", "tar=$p_tarname, list, mode=$p_mode");
		$v_result = 1;

		// ----- Check the parameters
		if ($p_tarname == "") {
			// ----- Error log
			PclErrorLog(-3, "Invalid empty archive name");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		clearstatcache();

		// ----- Check the file size
		if ((!is_file($p_tarname)) ||
			(((($v_size = filesize($p_tarname)) % 512) != 0) && ($p_mode == "tar"))
		) {
			// ----- Error log
			if (!is_file($p_tarname)) {
				PclErrorLog(-4, "Archive '$p_tarname' does not exist");
			} else {
				PclErrorLog(-6, "Archive '$p_tarname' has invalid size " . filesize($p_tarname) . "(not a 512 block multiple)");
			}

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Look for compressed archive
		if ($p_mode == "tgz") {
			// ----- Open the file in read mode
			if (($p_tar = @gzopen($p_tarname, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Open a temporary file in write mode
			$v_temp_tarname = uniqid("pcltar-") . ".tmp";
			TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
			if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0) {
				// ----- Close tar file
				gzclose($p_tar);

				// ----- Error log
				PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Read the first 512 bytes block
			$v_buffer = gzread($p_tar, 512);

			// ----- Read the following blocks but not the last one
			if (!gzeof($p_tar)) {
				TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
				$i = 1;

				// ----- Read new 512 block and write the already read
				do {
					// ----- Write the already read block
					$v_binary_data = pack("a512", "$v_buffer");
					gzputs($v_temp_tar, $v_binary_data);

					$i++;
					TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

					// ----- Read next block
					$v_buffer = gzread($p_tar, 512);

				} while (!gzeof($p_tar));

				TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
			}

			// ----- Call the adding fct inside the tar
			if (($v_result = PclTarHandleAddList($v_temp_tar, $p_list, $p_mode, $p_list_detail, $p_add_dir,
					$p_remove_dir)) == 1
			) {
				// ----- Call the footer of the tar archive
				$v_result = PclTarHandleFooter($v_temp_tar, $p_mode);
			}

			// ----- Close the files
			gzclose($p_tar);
			gzclose($v_temp_tar);

			// ----- Unlink tar file
			if (!@unlink($p_tarname)) {
				// ----- Error log
				PclErrorLog(-11, "Error while deleting archive name $p_tarname");
			}

			// ----- Rename tar file
			if (!@rename($v_temp_tarname, $p_tarname)) {
				// ----- Error log
				PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, $v_result);

			return $v_result;
		} // ----- Look for uncompressed tar file
		else {
			if ($p_mode == "tar") {
				// ----- Open the tar file
				if (($p_tar = fopen($p_tarname, "r+b")) == 0) {
					// ----- Error log
					PclErrorLog(-1, "Unable to open file '$p_tarname' in binary write mode");

					// ----- Return
					TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

					return PclErrorCode();
				}

				// ----- Go to the beginning of last block
				TrFctMessage(__FILE__, __LINE__, 4, "Position before :" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));
				fseek($p_tar, $v_size - 512);
				TrFctMessage(__FILE__, __LINE__, 4, "Position after :" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));

				// ----- Call the adding fct inside the tar
				if (($v_result = PclTarHandleAddList($p_tar, $p_list, $p_mode, $p_list_detail, $p_add_dir,
						$p_remove_dir)) == 1
				) {
					// ----- Call the footer of the tar archive
					$v_result = PclTarHandleFooter($p_tar, $p_mode);
				}

				// ----- Close the tarfile
				fclose($p_tar);
			} // ----- Look for unknown type
			else {
				// ----- Error log
				PclErrorLog(-3, "Invalid tar mode $p_mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleAddList()
	// Description :
	//   $p_add_dir and $p_remove_dir will give the ability to memorize a path which is
	//   different from the real path of the file. This is usefull if you want to have PclTar
	//   running in any directory, and memorize relative path from an other directory.
	// Parameters :
	//   $p_tar : File descriptor of the tar archive
	//   $p_list : An array containing the file or directory names to add in the tar
	//   $p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive
	//   $p_list_detail : list of added files with their properties (specially the status field)
	//   $p_add_dir : Path to add in the filename path archived
	//   $p_remove_dir : Path to remove in the filename path archived
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleAddList($p_tar, $p_list, $p_mode, &$p_list_detail, $p_add_dir, $p_remove_dir) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleAddList",
			"tar='$p_tar', list, mode='$p_mode', add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
		$v_result = 1;
		$v_header = array();

		// ----- Recuperate the current number of elt in list
		$v_nb = sizeof($p_list_detail);

		// ----- Check the parameters
		if ($p_tar == 0) {
			// ----- Error log
			PclErrorLog(-3, "Invalid file descriptor in file " . __FILE__ . ", line " . __LINE__);

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Check the arguments
		if (sizeof($p_list) == 0) {
			// ----- Error log
			PclErrorLog(-3, "Invalid file list parameter (invalid or empty list)");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Loop on the files
		for ($j = 0; ($j < count($p_list)) && ($v_result == 1); $j++) {
			// ----- Recuperate the filename
			$p_filename = $p_list[$j];

			TrFctMessage(__FILE__, __LINE__, 2, "Looking for file [$p_filename]");

			// ----- Skip empty file names
			if ($p_filename == "") {
				TrFctMessage(__FILE__, __LINE__, 2, "Skip empty filename");
				continue;
			}

			// ----- Check the filename
			if (!file_exists($p_filename)) {
				// ----- Error log
				TrFctMessage(__FILE__, __LINE__, 2, "File '$p_filename' does not exists");
				PclErrorLog(-4, "File '$p_filename' does not exists");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Check the path length
			if (strlen($p_filename) > 99) {
				// ----- Error log
				PclErrorLog(-5, "File name is too long (max. 99) : '$p_filename'");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			TrFctMessage(__FILE__, __LINE__, 4,
				"File position before header =" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));

			// ----- Add the file
			if (($v_result = PclTarHandleAddFile($p_tar, $p_filename, $p_mode, $v_header, $p_add_dir, $p_remove_dir)) != 1) {
				// ----- Return status
				TrFctEnd(__FILE__, __LINE__, $v_result);

				return $v_result;
			}

			// ----- Store the file infos
			$p_list_detail[$v_nb++] = $v_header;

			// ----- Look for directory
			if (is_dir($p_filename)) {
				TrFctMessage(__FILE__, __LINE__, 2, "$p_filename is a directory");

				// ----- Look for path
				if ($p_filename != ".") {
					$v_path = $p_filename . "/";
				} else {
					$v_path = "";
				}

				// ----- Read the directory for files and sub-directories
				$p_hdir = opendir($p_filename);
				$p_hitem = readdir($p_hdir); // '.' directory
				$p_hitem = readdir($p_hdir); // '..' directory
				while ($p_hitem = readdir($p_hdir)) {
					// ----- Look for a file
					if (is_file($v_path . $p_hitem)) {
						TrFctMessage(__FILE__, __LINE__, 4, "Add the file '" . $v_path . $p_hitem . "'");

						// ----- Add the file
						if (($v_result = PclTarHandleAddFile($p_tar, $v_path . $p_hitem, $p_mode, $v_header, $p_add_dir,
								$p_remove_dir)) != 1
						) {
							// ----- Return status
							TrFctEnd(__FILE__, __LINE__, $v_result);

							return $v_result;
						}

						// ----- Store the file infos
						$p_list_detail[$v_nb++] = $v_header;
					} // ----- Recursive call to PclTarHandleAddFile()
					else {
						TrFctMessage(__FILE__, __LINE__, 4, "'" . $v_path . $p_hitem . "' is a directory");

						// ----- Need an array as parameter
						$p_temp_list[0] = $v_path . $p_hitem;
						$v_result = PclTarHandleAddList($p_tar, $p_temp_list, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir);
					}
				}

				// ----- Free memory for the recursive loop
				unset($p_temp_list);
				unset($p_hdir);
				unset($p_hitem);
			} else {
				TrFctMessage(__FILE__, __LINE__, 4,
					"File position after blocks =" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleAddFile()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleAddFile($p_tar, $p_filename, $p_mode, &$p_header, $p_add_dir, $p_remove_dir) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleAddFile",
			"tar='$p_tar', filename='$p_filename', p_mode='$p_mode', add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
		$v_result = 1;

		// ----- Check the parameters
		if ($p_tar == 0) {
			// ----- Error log
			PclErrorLog(-3, "Invalid file descriptor in file " . __FILE__ . ", line " . __LINE__);

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Skip empty file names
		if ($p_filename == "") {
			// ----- Error log
			PclErrorLog(-3, "Invalid file list parameter (invalid or empty list)");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Calculate the stored filename
		$v_stored_filename = $p_filename;
		if ($p_remove_dir != "") {
			if (substr($p_remove_dir, -1) != '/') {
				$p_remove_dir .= "/";
			}

			if ((substr($p_filename, 0, 2) == "./") || (substr($p_remove_dir, 0, 2) == "./")) {
				if ((substr($p_filename, 0, 2) == "./") && (substr($p_remove_dir, 0, 2) != "./")) {
					$p_remove_dir = "./" . $p_remove_dir;
				}
				if ((substr($p_filename, 0, 2) != "./") && (substr($p_remove_dir, 0, 2) == "./")) {
					$p_remove_dir = substr($p_remove_dir, 2);
				}
			}

			if (substr($p_filename, 0, strlen($p_remove_dir)) == $p_remove_dir) {
				$v_stored_filename = substr($p_filename, strlen($p_remove_dir));
				TrFctMessage(__FILE__, __LINE__, 3, "Remove path '$p_remove_dir' in file '$p_filename' = '$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 . "/" . $v_stored_filename;
			}
			TrFctMessage(__FILE__, __LINE__, 3, "Add path '$p_add_dir' in file '$p_filename' = '$v_stored_filename'");
		}

		// ----- Check the path length
		if (strlen($v_stored_filename) > 99) {
			// ----- Error log
			PclErrorLog(-5, "Stored file name is too long (max. 99) : '$v_stored_filename'");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Look for a file
		if (is_file($p_filename)) {
			// ----- Open the source file
			if (($v_file = fopen($p_filename, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_filename' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Call the header generation
			if (($v_result = PclTarHandleHeader($p_tar, $p_filename, $p_mode, $p_header, $v_stored_filename)) != 1) {
				// ----- Return status
				TrFctEnd(__FILE__, __LINE__, $v_result);

				return $v_result;
			}

			TrFctMessage(__FILE__, __LINE__, 4,
				"File position after header =" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));

			// ----- Read the file by 512 octets blocks
			$i = 0;
			while (($v_buffer = fread($v_file, 512)) != "") {
				$v_binary_data = pack("a512", "$v_buffer");
				if ($p_mode == "tar") {
					fputs($p_tar, $v_binary_data);
				} else {
					gzputs($p_tar, $v_binary_data);
				}
				$i++;
			}
			TrFctMessage(__FILE__, __LINE__, 2, "$i 512 bytes blocks");

			// ----- Close the file
			fclose($v_file);

			TrFctMessage(__FILE__, __LINE__, 4,
				"File position after blocks =" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));
		} // ----- Look for a directory
		else {
			// ----- Call the header generation
			if (($v_result = PclTarHandleHeader($p_tar, $p_filename, $p_mode, $p_header, $v_stored_filename)) != 1) {
				// ----- Return status
				TrFctEnd(__FILE__, __LINE__, $v_result);

				return $v_result;
			}

			TrFctMessage(__FILE__, __LINE__, 4,
				"File position after header =" . ($p_mode == "tar" ? ftell($p_tar) : gztell($p_tar)));
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleHeader()
	// Description :
	//   This function creates in the TAR $p_tar, the TAR header for the file
	//   $p_filename.
	//
	//   1. The informations needed to compose the header are recuperated and formatted
	//   2. Two binary strings are composed for the first part of the header, before
	//      and after checksum field.
	//   3. The checksum is calculated from the two binary strings
	//   4. The header is write in the tar file (first binary string, binary string
	//      for checksum and last binary string).
	// Parameters :
	//   $p_tar : a valid file descriptor, opened in write mode,
	//   $p_filename : The name of the file the header is for,
	//   $p_mode : The mode of the archive ("tar" or "tgz").
	//   $p_header : A pointer to a array where will be set the file properties
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleHeader($p_tar, $p_filename, $p_mode, &$p_header, $p_stored_filename) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleHeader",
			"tar=$p_tar, file='$p_filename', mode='$p_mode', stored_filename='$p_stored_filename'");
		$v_result = 1;

		// ----- Check the parameters
		if (($p_tar == 0) || ($p_filename == "")) {
			// ----- Error log
			PclErrorLog(-3, "Invalid file descriptor in file " . __FILE__ . ", line " . __LINE__);

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Filename (reduce the path of stored name)
		if ($p_stored_filename == "") {
			$p_stored_filename = $p_filename;
		}
		$v_reduce_filename = PclTarHandlePathReduction($p_stored_filename);
		TrFctMessage(__FILE__, __LINE__, 2,
			"Filename (reduced) '$v_reduce_filename', strlen " . strlen($v_reduce_filename));

		// ----- Get file info
		$v_info = stat($p_filename);
		$v_uid = sprintf("%6s ", DecOct($v_info[4]));
		$v_gid = sprintf("%6s ", DecOct($v_info[5]));
		TrFctMessage(__FILE__, __LINE__, 3, "uid=$v_uid, gid=$v_gid");
		$v_perms = sprintf("%6s ", DecOct(fileperms($p_filename)));
		TrFctMessage(__FILE__, __LINE__, 3, "file permissions $v_perms");

		// ----- File mtime
		$v_mtime_data = filemtime($p_filename);
		TrFctMessage(__FILE__, __LINE__, 2, "File mtime : $v_mtime_data");
		$v_mtime = sprintf("%11s", DecOct($v_mtime_data));

		// ----- File typeflag
		// '0' or '\0' is the code for regular file
		// '5' is directory
		if (is_dir($p_filename)) {
			$v_typeflag = "5";
			$v_size = 0;
		} else {
			$v_typeflag = "";

			// ----- Get the file size
			clearstatcache();
			$v_size = filesize($p_filename);
		}

		TrFctMessage(__FILE__, __LINE__, 2, "File size : $v_size");
		$v_size = sprintf("%11s ", DecOct($v_size));

		TrFctMessage(__FILE__, __LINE__, 2, "File typeflag : $v_typeflag");

		// ----- Linkname
		$v_linkname = "";

		// ----- Magic
		$v_magic = "";

		// ----- Version
		$v_version = "";

		// ----- uname
		$v_uname = "";

		// ----- gname
		$v_gname = "";

		// ----- devmajor
		$v_devmajor = "";

		// ----- devminor
		$v_devminor = "";

		// ----- prefix
		$v_prefix = "";

		// ----- Compose the binary string of the header in two parts arround the checksum position
		$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));
		}
		TrFctMessage(__FILE__, __LINE__, 3, "Calculated checksum : $v_checksum");

		// ----- Write the first 148 bytes of the header in the archive
		if ($p_mode == "tar") {
			fputs($p_tar, $v_binary_data_first, 148);
		} else {
			gzputs($p_tar, $v_binary_data_first, 148);
		}

		// ----- Write the calculated checksum
		$v_checksum = sprintf("%6s ", DecOct($v_checksum));
		$v_binary_data = pack("a8", $v_checksum);
		if ($p_mode == "tar") {
			fputs($p_tar, $v_binary_data, 8);
		} else {
			gzputs($p_tar, $v_binary_data, 8);
		}

		// ----- Write the last 356 bytes of the header in the archive
		if ($p_mode == "tar") {
			fputs($p_tar, $v_binary_data_last, 356);
		} else {
			gzputs($p_tar, $v_binary_data_last, 356);
		}

		// ----- Set the properties in the header "structure"
		$p_header['filename'] = $v_reduce_filename;
		$p_header['mode'] = $v_perms;
		$p_header['uid'] = $v_uid;
		$p_header['gid'] = $v_gid;
		$p_header['size'] = $v_size;
		$p_header['mtime'] = $v_mtime;
		$p_header['typeflag'] = $v_typeflag;
		$p_header['status'] = "added";

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleFooter()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleFooter($p_tar, $p_mode) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleFooter", "tar='$p_tar', p_mode=$p_mode");
		$v_result = 1;

		// ----- Write the last 0 filled block for end of archive
		$v_binary_data = pack("a512", "");
		if ($p_mode == "tar") {
			fputs($p_tar, $v_binary_data);
		} else {
			gzputs($p_tar, $v_binary_data);
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleExtract()
	// Description :
	// Parameters :
	//   $p_tarname : Filename of the tar (or tgz) archive
	//   $p_file_list : An array which contains the list of files to extract, this
	//                  array may be empty when $p_mode is 'complete'
	//   $p_list_detail : An array where will be placed the properties of  each extracted/listed file
	//   $p_mode : 'complete' will extract all files from the archive,
	//             'partial' will look for files in $p_file_list
	//             'list' will only list the files from the archive without any extract
	//   $p_path : Path to add while writing the extracted files
	//   $p_tar_mode : 'tar' for GNU TAR archive, 'tgz' for compressed archive
	//   $p_remove_path : Path to remove (from the file memorized path) while writing the
	//                    extracted files. If the path does not match the file path,
	//                    the file is extracted with its memorized path.
	//                    $p_remove_path does not apply to 'list' mode.
	//                    $p_path and $p_remove_path are commulative.
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleExtract(
		$p_tarname,
		$p_file_list,
		&$p_list_detail,
		$p_mode,
		$p_path,
		$p_tar_mode,
		$p_remove_path
	) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleExtract",
			"archive='$p_tarname', list, mode=$p_mode, path=$p_path, tar_mode=$p_tar_mode, remove_path='$p_remove_path'");
		$v_result = 1;
		$v_nb = 0;
		$v_extract_all = true;
		$v_listing = false;

		// ----- Check the path
		if (($p_path == "") || ((substr($p_path, 0, 1) != "/") && (substr($p_path, 0, 3) != "../"))) {
			$p_path = "./" . $p_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);

		// ----- Study the mode
		switch ($p_mode) {
			case "complete" :
				// ----- Flag extract of all files
				$v_extract_all = true;
				$v_listing = false;
				break;
			case "partial" :
				// ----- Flag extract of specific files
				$v_extract_all = false;
				$v_listing = false;
				break;
			case "list" :
				// ----- Flag list of all files
				$v_extract_all = false;
				$v_listing = true;
				break;
			default :
				// ----- Error log
				PclErrorLog(-3, "Invalid extract mode ($p_mode)");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
		}

		// ----- Open the tar file
		if ($p_tar_mode == "tar") {
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
			$v_tar = fopen($p_tarname, "rb");
		} else {
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
			$v_tar = @gzopen($p_tarname, "rb");
		}

		// ----- Check that the archive is open
		if ($v_tar == 0) {
			// ----- Error log
			PclErrorLog(-2, "Unable to open archive '$p_tarname' in binary read mode");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Read the blocks
		while (!($v_end_of_file = ($p_tar_mode == "tar" ? feof($v_tar) : gzeof($v_tar)))) {
			TrFctMessage(__FILE__, __LINE__, 3, "Looking for next header ...");

			// ----- Clear cache of file infos
			clearstatcache();

			// ----- Reset extract tag
			$v_extract_file = false;
			$v_extraction_stopped = 0;

			// ----- Read the 512 bytes header
			if ($p_tar_mode == "tar") {
				$v_binary_data = fread($v_tar, 512);
			} else {
				$v_binary_data = gzread($v_tar, 512);
			}

			// ----- Read the header properties
			if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1) {
				// ----- Close the archive file
				if ($p_tar_mode == "tar") {
					fclose($v_tar);
				} else {
					gzclose($v_tar);
				}

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, $v_result);

				return $v_result;
			}

			// ----- Look for empty blocks to skip
			if ($v_header['filename'] == "") {
				TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
				continue;
			}

			TrFctMessage(__FILE__, __LINE__, 2, "Found file '$v_header[filename]', size '$v_header[size]'");

			// ----- Look for partial extract
			if ((!$v_extract_all) && (is_array($p_file_list))) {
				TrFctMessage(__FILE__, __LINE__, 2, "Look if the file '$v_header[filename]' need to be extracted");

				// ----- By default no unzip if the file is not found
				$v_extract_file = false;

				// ----- Look into the file list
				for ($i = 0; $i < sizeof($p_file_list); $i++) {
					TrFctMessage(__FILE__, __LINE__, 2,
						"Compare archived file '$v_header[filename]' from asked list file '" . $p_file_list[$i] . "'");

					// ----- Look if it is a directory
					if (substr($p_file_list[$i], -1) == "/") {
						TrFctMessage(__FILE__, __LINE__, 3, "Compare file '$v_header[filename]' with directory '$p_file_list[$i]'");

						// ----- 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])
						) {
							// ----- The file is in the directory, so extract it
							TrFctMessage(__FILE__, __LINE__, 2,
								"File '$v_header[filename]' is in directory '$p_file_list[$i]' : extract it");
							$v_extract_file = true;

							// ----- End of loop
							break;
						}
					} // ----- It is a file, so compare the file names
					else {
						if ($p_file_list[$i] == $v_header['filename']) {
							// ----- File found
							TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' should be extracted");
							$v_extract_file = true;

							// ----- End of loop
							break;
						}
					}
				}

				// ----- Trace
				if (!$v_extract_file) {
					TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' should not be extracted");
				}
			} else {
				// ----- All files need to be extracted
				$v_extract_file = true;
			}

			// ----- Look if this file need to be extracted
			if (($v_extract_file) && (!$v_listing)) {
				// ----- Look for path to remove
				if (($p_remove_path != "")
					&& (substr($v_header['filename'], 0, $p_remove_path_size) == $p_remove_path)
				) {
					TrFctMessage(__FILE__, __LINE__, 3, "Found path '$p_remove_path' to remove in file '$v_header[filename]'");
					// ----- Remove the path
					$v_header['filename'] = substr($v_header['filename'], $p_remove_path_size);
					TrFctMessage(__FILE__, __LINE__, 3, "Reslting file is '$v_header[filename]'");
				}

				// ----- Add the path to the file
				if (($p_path != "./") && ($p_path != "/")) {
					// ----- Look for the path end '/'
					while (substr($p_path, -1) == "/") {
						TrFctMessage(__FILE__, __LINE__, 3, "Destination path [$p_path] ends by '/'");
						$p_path = substr($p_path, 0, strlen($p_path) - 1);
						TrFctMessage(__FILE__, __LINE__, 3, "Modified to [$p_path]");
					}

					// ----- Add the path
					if (substr($v_header['filename'], 0, 1) == "/") {
						$v_header['filename'] = $p_path . $v_header['filename'];
					} else {
						$v_header['filename'] = $p_path . "/" . $v_header['filename'];
					}
				}

				// ----- Trace
				TrFctMessage(__FILE__, __LINE__, 2,
					"Extracting file (with path) '$v_header[filename]', size '$v_header[size]'");

				// ----- Check that the file does not exists
				if (file_exists($v_header['filename'])) {
					TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' already exists");

					// ----- Look if file is a directory
					if (is_dir($v_header['filename'])) {
						TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is a directory");

						// ----- Change the file status
						$v_header['status'] = "already_a_directory";

						// ----- Skip the extract
						$v_extraction_stopped = 1;
						$v_extract_file = 0;
					} // ----- Look if file is write protected
					else {
						if (!is_writeable($v_header['filename'])) {
							TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is write protected");

							// ----- Change the file status
							$v_header['status'] = "write_protected";

							// ----- Skip the extract
							$v_extraction_stopped = 1;
							$v_extract_file = 0;
						} // ----- Look if the extracted file is older
						else {
							if (filemtime($v_header['filename']) > $v_header['mtime']) {
								TrFctMessage(__FILE__, __LINE__, 2,
									"Existing file '$v_header[filename]' is newer (" . date("l dS of F Y h:i:s A",
										filemtime($v_header['filename'])) . ") than the extracted file (" . date("l dS of F Y h:i:s A",
										$v_header['mtime']) . ")");

								// ----- Change the file status
								$v_header['status'] = "newer_exist";

								// ----- Skip the extract
								$v_extraction_stopped = 1;
								$v_extract_file = 0;
							}
						}
					}
				} // ----- Check the directory availability and create it if necessary
				else {
					if ($v_header['typeflag'] == "5") {
						$v_dir_to_check = $v_header['filename'];
					} else {
						if (!strstr($v_header['filename'], "/")) {
							$v_dir_to_check = "";
						} else {
							$v_dir_to_check = dirname($v_header['filename']);
						}
					}

					if (($v_result = PclTarHandlerDirCheck($v_dir_to_check)) != 1) {
						TrFctMessage(__FILE__, __LINE__, 2, "Unable to create path for '$v_header[filename]'");

						// ----- Change the file status
						$v_header['status'] = "path_creation_fail";

						// ----- Skip the extract
						$v_extraction_stopped = 1;
						$v_extract_file = 0;
					}
				}

				// ----- Do the extraction
				if (($v_extract_file) && ($v_header['typeflag'] != "5")) {
					// ----- Open the destination file in write mode
					if (($v_dest_file = @fopen($v_header['filename'], "wb")) == 0) {
						TrFctMessage(__FILE__, __LINE__, 2, "Error while opening '$v_header[filename]' in write binary mode");

						// ----- Change the file status
						$v_header['status'] = "write_error";

						// ----- Jump to next file
						TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
						if ($p_tar_mode == "tar") {
							fseek($v_tar, ftell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
						} else {
							gzseek($v_tar, gztell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
						}
					} else {
						TrFctMessage(__FILE__, __LINE__, 2, "Start extraction of '$v_header[filename]'");

						// ----- Read data
						$n = floor($v_header['size'] / 512);
						for ($i = 0; $i < $n; $i++) {
							TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number " . ($i + 1));
							if ($p_tar_mode == "tar") {
								$v_content = fread($v_tar, 512);
							} else {
								$v_content = gzread($v_tar, 512);
							}
							fwrite($v_dest_file, $v_content, 512);
						}
						if (($v_header['size'] % 512) != 0) {
							TrFctMessage(__FILE__, __LINE__, 3, "Read last " . ($v_header['size'] % 512) . " bytes in a 512 block");
							if ($p_tar_mode == "tar") {
								$v_content = fread($v_tar, 512);
							} else {
								$v_content = gzread($v_tar, 512);
							}
							fwrite($v_dest_file, $v_content, ($v_header['size'] % 512));
						}

						// ----- Close the destination file
						fclose($v_dest_file);

						// ----- Change the file mode, mtime
						touch($v_header['filename'], $v_header['mtime']);
						//chmod($v_header['filename'], DecOct($v_header['mode']));
					}

					// ----- Check the file size
					clearstatcache();
					if (filesize($v_header['filename']) != $v_header['size']) {
						// ----- Close the archive file
						if ($p_tar_mode == "tar") {
							fclose($v_tar);
						} else {
							gzclose($v_tar);
						}

						// ----- Error log
						PclErrorLog(-7,
							"Extracted file '$v_header[filename]' does not have the correct file size '" . filesize($v_filename) . "' ('$v_header[size]' expected). Archive may be corrupted.");

						// ----- Return
						TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

						return PclErrorCode();
					}

					// ----- Trace
					TrFctMessage(__FILE__, __LINE__, 2, "Extraction done");
				} else {
					TrFctMessage(__FILE__, __LINE__, 2, "Extraction of file '$v_header[filename]' skipped.");

					// ----- Jump to next file
					TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
					if ($p_tar_mode == "tar") {
						fseek($v_tar, ftell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
					} else {
						gzseek($v_tar, gztell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
					}
				}
			} // ----- Look for file that is not to be unzipped
			else {
				// ----- Trace
				TrFctMessage(__FILE__, __LINE__, 2, "Jump file '$v_header[filename]'");
				TrFctMessage(__FILE__, __LINE__, 4,
					"Position avant jump [" . ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) . "]");

				// ----- Jump to next file
				if ($p_tar_mode == "tar") {
					fseek($v_tar, ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) + (ceil(($v_header['size'] / 512)) * 512));
				} else {
					gzseek($v_tar, gztell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
				}

				TrFctMessage(__FILE__, __LINE__, 4,
					"Position apr�s jump [" . ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) . "]");
			}

			if ($p_tar_mode == "tar") {
				$v_end_of_file = feof($v_tar);
			} else {
				$v_end_of_file = gzeof($v_tar);
			}

			// ----- File name and properties are logged if listing mode or file is extracted
			if ($v_listing || $v_extract_file || $v_extraction_stopped) {
				TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

				// ----- 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 = "/";
				}

				// ----- Add the array describing the file into the list
				$p_list_detail[$v_nb] = $v_header;

				// ----- Increment
				$v_nb++;
			}
		}

		// ----- Close the tarfile
		if ($p_tar_mode == "tar") {
			fclose($v_tar);
		} else {
			gzclose($v_tar);
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleExtractByIndexList()
	// Description :
	//   Extract the files which are at the indexes specified. If the 'file' at the
	//   index is a directory, the directory only is created, not all the files stored
	//   for that directory.
	// Parameters :
	//   $p_index_string : String of indexes of files to extract. The form of the
	//                     string is "0,4-6,8-12" with only numbers and '-' for
	//                     for range, and ',' to separate ranges. No spaces or ';'
	//                     are allowed.
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleExtractByIndexList(
		$p_tarname,
		$p_index_string,
		&$p_list_detail,
		$p_path,
		$p_remove_path,
		$p_tar_mode
	) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleExtractByIndexList",
			"archive='$p_tarname', index_string='$p_index_string', list, path=$p_path, remove_path='$p_remove_path', tar_mode=$p_tar_mode");
		$v_result = 1;
		$v_nb = 0;

		// ----- TBC : I should check the string by a regexp

		// ----- Check the path
		if (($p_path == "") || ((substr($p_path, 0, 1) != "/") && (substr($p_path, 0, 3) != "../") && (substr($p_path, 0,
						2) != "./"))
		) {
			$p_path = "./" . $p_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);

		// ----- Open the tar file
		if ($p_tar_mode == "tar") {
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
			$v_tar = @fopen($p_tarname, "rb");
		} else {
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
			$v_tar = @gzopen($p_tarname, "rb");
		}

		// ----- Check that the archive is open
		if ($v_tar == 0) {
			// ----- Error log
			PclErrorLog(-2, "Unable to open archive '$p_tarname' in binary read mode");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Manipulate the index list
		$v_list = explode(",", $p_index_string);
		sort($v_list);

		// ----- Loop on the index list
		$v_index = 0;
		for ($i = 0; ($i < sizeof($v_list)) && ($v_result); $i++) {
			TrFctMessage(__FILE__, __LINE__, 3, "Looking for index part '$v_list[$i]'");

			// ----- Extract range
			$v_index_list = explode("-", $v_list[$i]);
			$v_size_index_list = sizeof($v_index_list);
			if ($v_size_index_list == 1) {
				TrFctMessage(__FILE__, __LINE__, 3, "Only one index '$v_index_list[0]'");

				// ----- Do the extraction
				$v_result = PclTarHandleExtractByIndex($v_tar, $v_index, $v_index_list[0], $v_index_list[0], $p_list_detail,
					$p_path, $p_remove_path, $p_tar_mode);
			} else {
				if ($v_size_index_list == 2) {
					TrFctMessage(__FILE__, __LINE__, 3, "Two indexes '$v_index_list[0]' and '$v_index_list[1]'");

					// ----- Do the extraction
					$v_result = PclTarHandleExtractByIndex($v_tar, $v_index, $v_index_list[0], $v_index_list[1], $p_list_detail,
						$p_path, $p_remove_path, $p_tar_mode);
				}
			}
		}

		// ----- Close the tarfile
		if ($p_tar_mode == "tar") {
			fclose($v_tar);
		} else {
			gzclose($v_tar);
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleExtractByIndex()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleExtractByIndex(
		$p_tar,
		&$p_index_current,
		$p_index_start,
		$p_index_stop,
		&$p_list_detail,
		$p_path,
		$p_remove_path,
		$p_tar_mode
	) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleExtractByIndex",
			"archive_descr='$p_tar', index_current=$p_index_current, index_start='$p_index_start', index_stop='$p_index_stop', list, path=$p_path, remove_path='$p_remove_path', tar_mode=$p_tar_mode");
		$v_result = 1;
		$v_nb = 0;

		// TBC : I should replace all $v_tar by $p_tar in this function ....
		$v_tar = $p_tar;

		// ----- Look the number of elements already in $p_list_detail
		$v_nb = sizeof($p_list_detail);

		// ----- Read the blocks
		while (!($v_end_of_file = ($p_tar_mode == "tar" ? feof($v_tar) : gzeof($v_tar)))) {
			TrFctMessage(__FILE__, __LINE__, 3, "Looking for next file ...");
			TrFctMessage(__FILE__, __LINE__, 3, "Index current=$p_index_current, range=[$p_index_start, $p_index_stop])");

			if ($p_index_current > $p_index_stop) {
				TrFctMessage(__FILE__, __LINE__, 2, "Stop extraction, past stop index");
				break;
			}

			// ----- Clear cache of file infos
			clearstatcache();

			// ----- Reset extract tag
			$v_extract_file = false;
			$v_extraction_stopped = 0;

			// ----- Read the 512 bytes header
			if ($p_tar_mode == "tar") {
				$v_binary_data = fread($v_tar, 512);
			} else {
				$v_binary_data = gzread($v_tar, 512);
			}

			// ----- Read the header properties
			if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1) {
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, $v_result);

				return $v_result;
			}

			// ----- Look for empty blocks to skip
			if ($v_header['filename'] == "") {
				TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
				continue;
			}

			TrFctMessage(__FILE__, __LINE__, 2, "Found file '$v_header[filename]', size '$v_header[size]'");

			// ----- Look if file is in the range to be extracted
			if (($p_index_current >= $p_index_start) && ($p_index_current <= $p_index_stop)) {
				TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' is in the range to be extracted");
				$v_extract_file = true;
			} else {
				TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' is out of the range");
				$v_extract_file = false;
			}

			// ----- Look if this file need to be extracted
			if ($v_extract_file) {
				if (($v_result = PclTarHandleExtractFile($v_tar, $v_header, $p_path, $p_remove_path, $p_tar_mode)) != 1) {
					// ----- Return
					TrFctEnd(__FILE__, __LINE__, $v_result);

					return $v_result;
				}
			} // ----- Look for file that is not to be extracted
			else {
				// ----- Trace
				TrFctMessage(__FILE__, __LINE__, 2, "Jump file '$v_header[filename]'");
				TrFctMessage(__FILE__, __LINE__, 4,
					"Position avant jump [" . ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) . "]");

				// ----- Jump to next file
				if ($p_tar_mode == "tar") {
					fseek($v_tar, ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) + (ceil(($v_header['size'] / 512)) * 512));
				} else {
					gzseek($v_tar, gztell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
				}

				TrFctMessage(__FILE__, __LINE__, 4,
					"Position apr�s jump [" . ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) . "]");
			}

			if ($p_tar_mode == "tar") {
				$v_end_of_file = feof($v_tar);
			} else {
				$v_end_of_file = gzeof($v_tar);
			}

			// ----- File name and properties are logged if listing mode or file is extracted
			if ($v_extract_file) {
				TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

				// ----- 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 = "/";
				}

				// ----- Add the array describing the file into the list
				$p_list_detail[$v_nb] = $v_header;

				// ----- Increment
				$v_nb++;
			}

			// ----- Increment the current file index
			$p_index_current++;
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleExtractFile()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleExtractFile($p_tar, &$v_header, $p_path, $p_remove_path, $p_tar_mode) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleExtractFile",
			"archive_descr='$p_tar', path=$p_path, remove_path='$p_remove_path', tar_mode=$p_tar_mode");
		$v_result = 1;

		// TBC : I should replace all $v_tar by $p_tar in this function ....
		$v_tar = $p_tar;
		$v_extract_file = 1;

		$p_remove_path_size = strlen($p_remove_path);

		// ----- Look for path to remove
		if (($p_remove_path != "")
			&& (substr($v_header['filename'], 0, $p_remove_path_size) == $p_remove_path)
		) {
			TrFctMessage(__FILE__, __LINE__, 3, "Found path '$p_remove_path' to remove in file '$v_header[filename]'");
			// ----- Remove the path
			$v_header['filename'] = substr($v_header['filename'], $p_remove_path_size);
			TrFctMessage(__FILE__, __LINE__, 3, "Resulting file is '$v_header[filename]'");
		}

		// ----- Add the path to the file
		if (($p_path != "./") && ($p_path != "/")) {
			// ----- Look for the path end '/'
			while (substr($p_path, -1) == "/") {
				TrFctMessage(__FILE__, __LINE__, 3, "Destination path [$p_path] ends by '/'");
				$p_path = substr($p_path, 0, strlen($p_path) - 1);
				TrFctMessage(__FILE__, __LINE__, 3, "Modified to [$p_path]");
			}

			// ----- Add the path
			if (substr($v_header['filename'], 0, 1) == "/") {
				$v_header['filename'] = $p_path . $v_header['filename'];
			} else {
				$v_header['filename'] = $p_path . "/" . $v_header['filename'];
			}
		}

		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Extracting file (with path) '$v_header[filename]', size '$v_header[size]'");

		// ----- Check that the file does not exists
		if (file_exists($v_header['filename'])) {
			TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' already exists");

			// ----- Look if file is a directory
			if (is_dir($v_header['filename'])) {
				TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is a directory");

				// ----- Change the file status
				$v_header['status'] = "already_a_directory";

				// ----- Skip the extract
				$v_extraction_stopped = 1;
				$v_extract_file = 0;
			} // ----- Look if file is write protected
			else {
				if (!is_writeable($v_header['filename'])) {
					TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is write protected");

					// ----- Change the file status
					$v_header['status'] = "write_protected";

					// ----- Skip the extract
					$v_extraction_stopped = 1;
					$v_extract_file = 0;
				} // ----- Look if the extracted file is older
				else {
					if (filemtime($v_header['filename']) > $v_header['mtime']) {
						TrFctMessage(__FILE__, __LINE__, 2,
							"Existing file '$v_header[filename]' is newer (" . date("l dS of F Y h:i:s A",
								filemtime($v_header['filename'])) . ") than the extracted file (" . date("l dS of F Y h:i:s A",
								$v_header['mtime']) . ")");

						// ----- Change the file status
						$v_header['status'] = "newer_exist";

						// ----- Skip the extract
						$v_extraction_stopped = 1;
						$v_extract_file = 0;
					}
				}
			}
		} // ----- Check the directory availability and create it if necessary
		else {
			if ($v_header['typeflag'] == "5") {
				$v_dir_to_check = $v_header['filename'];
			} else {
				if (!strstr($v_header['filename'], "/")) {
					$v_dir_to_check = "";
				} else {
					$v_dir_to_check = dirname($v_header['filename']);
				}
			}

			if (($v_result = PclTarHandlerDirCheck($v_dir_to_check)) != 1) {
				TrFctMessage(__FILE__, __LINE__, 2, "Unable to create path for '$v_header[filename]'");

				// ----- Change the file status
				$v_header['status'] = "path_creation_fail";

				// ----- Skip the extract
				$v_extraction_stopped = 1;
				$v_extract_file = 0;
			}
		}

		// ----- Do the real bytes extraction (if not a directory)
		if (($v_extract_file) && ($v_header['typeflag'] != "5")) {
			// ----- Open the destination file in write mode
			if (($v_dest_file = @fopen($v_header['filename'], "wb")) == 0) {
				TrFctMessage(__FILE__, __LINE__, 2, "Error while opening '$v_header[filename]' in write binary mode");

				// ----- Change the file status
				$v_header['status'] = "write_error";

				// ----- Jump to next file
				TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
				if ($p_tar_mode == "tar") {
					fseek($v_tar, ftell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
				} else {
					gzseek($v_tar, gztell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
				}
			} else {
				TrFctMessage(__FILE__, __LINE__, 2, "Start extraction of '$v_header[filename]'");

				// ----- Read data
				$n = floor($v_header['size'] / 512);
				for ($i = 0; $i < $n; $i++) {
					TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number " . ($i + 1));
					if ($p_tar_mode == "tar") {
						$v_content = fread($v_tar, 512);
					} else {
						$v_content = gzread($v_tar, 512);
					}
					fwrite($v_dest_file, $v_content, 512);
				}
				if (($v_header['size'] % 512) != 0) {
					TrFctMessage(__FILE__, __LINE__, 3, "Read last " . ($v_header['size'] % 512) . " bytes in a 512 block");
					if ($p_tar_mode == "tar") {
						$v_content = fread($v_tar, 512);
					} else {
						$v_content = gzread($v_tar, 512);
					}
					fwrite($v_dest_file, $v_content, ($v_header['size'] % 512));
				}

				// ----- Close the destination file
				fclose($v_dest_file);

				// ----- Change the file mode, mtime
				touch($v_header['filename'], $v_header['mtime']);
				//chmod($v_header['filename'], DecOct($v_header['mode']));
			}

			// ----- Check the file size
			clearstatcache();
			if (filesize($v_header['filename']) != $v_header['size']) {
				// ----- Error log
				PclErrorLog(-7,
					"Extracted file '$v_header[filename]' does not have the correct file size '" . filesize($v_filename) . "' ('$v_header[size]' expected). Archive may be corrupted.");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Trace
			TrFctMessage(__FILE__, __LINE__, 2, "Extraction done");
		} else {
			TrFctMessage(__FILE__, __LINE__, 2, "Extraction of file '$v_header[filename]' skipped.");

			// ----- Jump to next file
			TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
			if ($p_tar_mode == "tar") {
				fseek($v_tar, ftell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
			} else {
				gzseek($v_tar, gztell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleDelete()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleDelete($p_tarname, $p_file_list, &$p_list_detail, $p_tar_mode) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleDelete", "archive='$p_tarname', list, tar_mode=$p_tar_mode");
		$v_result = 1;
		$v_nb = 0;

		// ----- Look for regular tar file
		if ($p_tar_mode == "tar") {
			// ----- Open file
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
			if (($v_tar = @fopen($p_tarname, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Open a temporary file in write mode
			$v_temp_tarname = uniqid("pcltar-") . ".tmp";
			TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
			if (($v_temp_tar = @fopen($v_temp_tarname, "wb")) == 0) {
				// ----- Close tar file
				fclose($v_tar);

				// ----- Error log
				PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}
		} // ----- Look for compressed tar file
		else {
			// ----- Open the file in read mode
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
			if (($v_tar = @gzopen($p_tarname, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Open a temporary file in write mode
			$v_temp_tarname = uniqid("pcltar-") . ".tmp";
			TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
			if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0) {
				// ----- Close tar file
				gzclose($v_tar);

				// ----- Error log
				PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}
		}

		// ----- Read the blocks
		while (!($v_end_of_file = ($p_tar_mode == "tar" ? feof($v_tar) : gzeof($v_tar)))) {
			TrFctMessage(__FILE__, __LINE__, 3, "Looking for next header ...");

			// ----- Clear cache of file infos
			clearstatcache();

			// ----- Reset delete tag
			$v_delete_file = false;

			// ----- Read the first 512 block header
			if ($p_tar_mode == "tar") {
				$v_binary_data = fread($v_tar, 512);
			} else {
				$v_binary_data = gzread($v_tar, 512);
			}

			// ----- Read the header properties
			if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1) {
				// ----- Close the archive file
				if ($p_tar_mode == "tar") {
					fclose($v_tar);
					fclose($v_temp_tar);
				} else {
					gzclose($v_tar);
					gzclose($v_temp_tar);
				}
				@unlink($v_temp_tarname);

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, $v_result);

				return $v_result;
			}

			// ----- Look for empty blocks to skip
			if ($v_header['filename'] == "") {
				TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
				continue;
			}

			TrFctMessage(__FILE__, __LINE__, 2, "Found file '$v_header[filename]', size '$v_header[size]'");

			// ----- Look for filenames to delete
			for ($i = 0, $v_delete_file = false; ($i < sizeof($p_file_list)) && (!$v_delete_file); $i++) {
				// ----- Compare the file names
//        if ($p_file_list[$i] == $v_header['filename'])
				if (($v_len = strcmp($p_file_list[$i], $v_header['filename'])) <= 0) {
					if ($v_len == 0) {
						TrFctMessage(__FILE__, __LINE__, 3, "Found that '$v_header[filename]' need to be deleted");
						$v_delete_file = true;
					} else {
						TrFctMessage(__FILE__, __LINE__, 3, "Look if '$v_header[filename]' is a file in $p_file_list[$i]");
						if (substr($v_header['filename'], strlen($p_file_list[$i]), 1) == "/") {
							TrFctMessage(__FILE__, __LINE__, 3, "'$v_header[filename]' is a file in $p_file_list[$i]");
							$v_delete_file = true;
						}
					}
				}
			}

			// ----- Copy files that do not need to be deleted
			if (!$v_delete_file) {
				TrFctMessage(__FILE__, __LINE__, 2, "Keep file '$v_header[filename]'");

				// ----- Write the file header
				if ($p_tar_mode == "tar") {
					fputs($v_temp_tar, $v_binary_data, 512);
				} else {
					gzputs($v_temp_tar, $v_binary_data, 512);
				}

				// ----- Write the file data
				$n = ceil($v_header['size'] / 512);
				for ($i = 0; $i < $n; $i++) {
					TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number " . ($i + 1));
					if ($p_tar_mode == "tar") {
						$v_content = fread($v_tar, 512);
						fwrite($v_temp_tar, $v_content, 512);
					} else {
						$v_content = gzread($v_tar, 512);
						gzwrite($v_temp_tar, $v_content, 512);
					}
				}

				// ----- File name and properties are logged if listing mode or file is extracted
				TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

				// ----- Add the array describing the file into the list
				$p_list_detail[$v_nb] = $v_header;
				$p_list_detail[$v_nb]['status'] = "ok";

				// ----- Increment
				$v_nb++;
			} // ----- Look for file that is to be deleted
			else {
				// ----- Trace
				TrFctMessage(__FILE__, __LINE__, 2, "Start deletion of '$v_header[filename]'");
				TrFctMessage(__FILE__, __LINE__, 4,
					"Position avant jump [" . ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) . "]");

				// ----- Jump to next file
				if ($p_tar_mode == "tar") {
					fseek($v_tar, ftell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
				} else {
					gzseek($v_tar, gztell($v_tar) + (ceil(($v_header['size'] / 512)) * 512));
				}

				TrFctMessage(__FILE__, __LINE__, 4,
					"Position apr�s jump [" . ($p_tar_mode == "tar" ? ftell($v_tar) : gztell($v_tar)) . "]");
			}

			// ----- Look for end of file
			if ($p_tar_mode == "tar") {
				$v_end_of_file = feof($v_tar);
			} else {
				$v_end_of_file = gzeof($v_tar);
			}
		}

		// ----- Write the last empty buffer
		PclTarHandleFooter($v_temp_tar, $p_tar_mode);

		// ----- Close the tarfile
		if ($p_tar_mode == "tar") {
			fclose($v_tar);
			fclose($v_temp_tar);
		} else {
			gzclose($v_tar);
			gzclose($v_temp_tar);
		}

		// ----- Unlink tar file
		if (!@unlink($p_tarname)) {
			// ----- Error log
			PclErrorLog(-11, "Error while deleting archive name $p_tarname");
		}


		// ----- Rename tar file
		if (!@rename($v_temp_tarname, $p_tarname)) {
			// ----- Error log
			PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleUpdate()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleUpdate($p_tarname, $p_file_list, &$p_list_detail, $p_tar_mode, $p_add_dir, $p_remove_dir) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleUpdate", "archive='$p_tarname', list, tar_mode=$p_tar_mode");
		$v_result = 1;
		$v_nb = 0;
		$v_found_list = array();

		// ----- Look for regular tar file
		if ($p_tar_mode == "tar") {
			// ----- Open file
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
			if (($v_tar = @fopen($p_tarname, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Open a temporary file in write mode
			$v_temp_tarname = uniqid("pcltar-") . ".tmp";
			TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
			if (($v_temp_tar = @fopen($v_temp_tarname, "wb")) == 0) {
				// ----- Close tar file
				fclose($v_tar);

				// ----- Error log
				PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}
		} // ----- Look for compressed tar file
		else {
			// ----- Open the file in read mode
			TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
			if (($v_tar = @gzopen($p_tarname, "rb")) == 0) {
				// ----- Error log
				PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}

			// ----- Open a temporary file in write mode
			$v_temp_tarname = uniqid("pcltar-") . ".tmp";
			TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
			if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0) {
				// ----- Close tar file
				gzclose($v_tar);

				// ----- Error log
				PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				return PclErrorCode();
			}
		}

		// ----- Prepare the list of files
		for ($i = 0; $i < sizeof($p_file_list); $i++) {
			// ----- Reset the found list
			$v_found_list[$i] = 0;

			// ----- Calculate the stored filename
			$v_stored_list[$i] = $p_file_list[$i];
			if ($p_remove_dir != "") {
				if (substr($p_file_list[$i], -1) != '/') {
					$p_remove_dir .= "/";
				}

				if (substr($p_file_list[$i], 0, strlen($p_remove_dir)) == $p_remove_dir) {
					$v_stored_list[$i] = substr($p_file_list[$i], strlen($p_remove_dir));
					TrFctMessage(__FILE__, __LINE__, 3,
						"Remove path '$p_remove_dir' in file '$p_file_list[$i]' = '$v_stored_list[$i]'");
				}
			}
			if ($p_add_dir != "") {
				if (substr($p_add_dir, -1) == "/") {
					$v_stored_list[$i] = $p_add_dir . $v_stored_list[$i];
				} else {
					$v_stored_list[$i] = $p_add_dir . "/" . $v_stored_list[$i];
				}
				TrFctMessage(__FILE__, __LINE__, 3, "Add path '$p_add_dir' in file '$p_file_list[$i]' = '$v_stored_list[$i]'");
			}
			$v_stored_list[$i] = PclTarHandlePathReduction($v_stored_list[$i]);
			TrFctMessage(__FILE__, __LINE__, 3, "After reduction '$v_stored_list[$i]'");
		}


		// ----- Update file cache
		clearstatcache();

		// ----- Read the blocks
		while (!($v_end_of_file = ($p_tar_mode == "tar" ? feof($v_tar) : gzeof($v_tar)))) {
			TrFctMessage(__FILE__, __LINE__, 3, "Looking for next header ...");

			// ----- Clear cache of file infos
			clearstatcache();

			// ----- Reset current found filename
			$v_current_filename = "";

			// ----- Reset delete tag
			$v_delete_file = false;

			// ----- Read the first 512 block header
			if ($p_tar_mode == "tar") {
				$v_binary_data = fread($v_tar, 512);
			} else {
				$v_binary_data = gzread($v_tar, 512);
			}

			// ----- Read the header properties
			if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1) {
				// ----- Close the archive file
				if ($p_tar_mode == "tar") {
					fclose($v_tar);
					fclose($v_temp_tar);
				} else {
					gzclose($v_tar);
					gzclose($v_temp_tar);
				}
				@unlink($v_temp_tarname);

				// ----- Return
				TrFctEnd(__FILE__, __LINE__, $v_result);

				return $v_result;
			}

			// ----- Look for empty blocks to skip
			if ($v_header['filename'] == "") {
				TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
				continue;
			}

			TrFctMessage(__FILE__, __LINE__, 2, "Found file '$v_header[filename]', size '$v_header[size]'");

			// ----- Look for filenames to update
			for ($i = 0, $v_update_file = false, $v_found_file = false; ($i < sizeof($v_stored_list)) && (!$v_update_file); $i++) {
				TrFctMessage(__FILE__, __LINE__, 4, "Compare with file '$v_stored_list[$i]'");

				// ----- Compare the file names
				if ($v_stored_list[$i] == $v_header['filename']) {
					TrFctMessage(__FILE__, __LINE__, 3, "File '$v_stored_list[$i]' is present in archive");
					TrFctMessage(__FILE__, __LINE__, 3,
						"File '$v_stored_list[$i]' mtime=" . filemtime($p_file_list[$i]) . " " . date("l dS of F Y h:i:s A",
							filemtime($p_file_list[$i])));
					TrFctMessage(__FILE__, __LINE__, 3,
						"Archived mtime=" . $v_header['mtime'] . " " . date("l dS of F Y h:i:s A", $v_header['mtime']));

					// ----- Store found informations
					$v_found_file = true;
					$v_current_filename = $p_file_list[$i];

					// ----- Look if the file need to be updated
					if (filemtime($p_file_list[$i]) > $v_header['mtime']) {
						TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' need to be updated");
						$v_update_file = true;
					} else {
						TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' does not need to be updated");
						$v_update_file = false;
					}

					// ----- Flag the name in order not to add the file at the end
					$v_found_list[$i] = 1;
				} else {
					TrFctMessage(__FILE__, __LINE__, 4, "File '$p_file_list[$i]' is not '$v_header[filename]'");
				}
			}

			// ----- Copy files that do not need to be updated
			if (!$v_update_file) {
				TrFctMessage(__FILE__, __LINE__, 2, "Keep file '$v_header[filename]'");

				// ----- Write the file header
				if ($p_tar_mode == "tar") {
					fputs($v_temp_tar, $v_binary_data, 512);
				} else {
					gzputs($v_temp_tar, $v_binary_data, 512);
				}

				// ----- Write the file data
				$n = ceil($v_header['size'] / 512);
				for ($j = 0; $j < $n; $j++) {
					TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number " . ($j + 1));
					if ($p_tar_mode == "tar") {
						$v_content = fread($v_tar, 512);
						fwrite($v_temp_tar, $v_content, 512);
					} else {
						$v_content = gzread($v_tar, 512);
						gzwrite($v_temp_tar, $v_content, 512);
					}
				}

				// ----- File name and properties are logged if listing mode or file is extracted
				TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

				// ----- Add the array describing the file into the list
				$p_list_detail[$v_nb] = $v_header;
				$p_list_detail[$v_nb]['status'] = ($v_found_file ? "not_updated" : "ok");

				// ----- Increment
				$v_nb++;
			} // ----- Look for file that need to be updated
			else {
				// ----- Trace
				TrFctMessage(__FILE__, __LINE__, 2, "Start update of file '$v_current_filename'");

				// ----- Store the old file size
				$v_old_size = $v_header['size'];

				// ----- Add the file
				if (($v_result = PclTarHandleAddFile($v_temp_tar, $v_current_filename, $p_tar_mode, $v_header, $p_add_dir,
						$p_remove_dir)) != 1
				) {
					// ----- Close the tarfile
					if ($p_tar_mode == "tar") {
						fclose($v_tar);
						fclose($v_temp_tar);
					} else {
						gzclose($v_tar);
						gzclose($v_temp_tar);
					}
					@unlink($p_temp_tarname);

					// ----- Return status
					TrFctEnd(__FILE__, __LINE__, $v_result);

					return $v_result;
				}

				// ----- Trace
				TrFctMessage(__FILE__, __LINE__, 2, "Skip old file '$v_header[filename]'");

				// ----- Jump to next file
				if ($p_tar_mode == "tar") {
					fseek($v_tar, ftell($v_tar) + (ceil(($v_old_size / 512)) * 512));
				} else {
					gzseek($v_tar, gztell($v_tar) + (ceil(($v_old_size / 512)) * 512));
				}

				// ----- Add the array describing the file into the list
				$p_list_detail[$v_nb] = $v_header;
				$p_list_detail[$v_nb]['status'] = "updated";

				// ----- Increment
				$v_nb++;
			}

			// ----- Look for end of file
			if ($p_tar_mode == "tar") {
				$v_end_of_file = feof($v_tar);
			} else {
				$v_end_of_file = gzeof($v_tar);
			}
		}

		// ----- Look for files that does not exists in the archive and need to be added
		for ($i = 0; $i < sizeof($p_file_list); $i++) {
			// ----- Look if file not found in the archive
			if (!$v_found_list[$i]) {
				TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' need to be added");

				// ----- Add the file
				if (($v_result = PclTarHandleAddFile($v_temp_tar, $p_file_list[$i], $p_tar_mode, $v_header, $p_add_dir,
						$p_remove_dir)) != 1
				) {
					// ----- Close the tarfile
					if ($p_tar_mode == "tar") {
						fclose($v_tar);
						fclose($v_temp_tar);
					} else {
						gzclose($v_tar);
						gzclose($v_temp_tar);
					}
					@unlink($p_temp_tarname);

					// ----- Return status
					TrFctEnd(__FILE__, __LINE__, $v_result);

					return $v_result;
				}

				// ----- Add the array describing the file into the list
				$p_list_detail[$v_nb] = $v_header;
				$p_list_detail[$v_nb]['status'] = "added";

				// ----- Increment
				$v_nb++;
			} else {
				TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' was already updated if needed");
			}
		}

		// ----- Write the last empty buffer
		PclTarHandleFooter($v_temp_tar, $p_tar_mode);

		// ----- Close the tarfile
		if ($p_tar_mode == "tar") {
			fclose($v_tar);
			fclose($v_temp_tar);
		} else {
			gzclose($v_tar);
			gzclose($v_temp_tar);
		}

		// ----- Unlink tar file
		if (!@unlink($p_tarname)) {
			// ----- Error log
			PclErrorLog(-11, "Error while deleting archive name $p_tarname");
		}


		// ----- Rename tar file
		if (!@rename($v_temp_tarname, $p_tarname)) {
			// ----- Error log
			PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleReadHeader()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleReadHeader($v_binary_data, &$v_header) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleReadHeader", "");
		$v_result = 1;

		// ----- Read the 512 bytes header
		/*
    if ($p_tar_mode == "tar")
      $v_binary_data = fread($p_tar, 512);
    else
      $v_binary_data = gzread($p_tar, 512);
    */

		// ----- Look for no more block
		if (strlen($v_binary_data) == 0) {
			$v_header['filename'] = "";
			$v_header['status'] = "empty";

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, $v_result, "End of archive found");

			return $v_result;
		}

		// ----- Look for invalid block size
		if (strlen($v_binary_data) != 512) {
			$v_header['filename'] = "";
			$v_header['status'] = "invalid_header";
			TrFctMessage(__FILE__, __LINE__, 2, "Invalid block size : " . strlen($v_binary_data));

			// ----- Error log
			PclErrorLog(-10, "Invalid block size : " . strlen($v_binary_data));

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- 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));
		}
		TrFctMessage(__FILE__, __LINE__, 3, "Calculated checksum : $v_checksum");

		// ----- Extract the values
		TrFctMessage(__FILE__, __LINE__, 2, "Header : '$v_binary_data'");
		$v_data = unpack("a100filename/a8mode/a8uid/a8gid/a12size/a12mtime/a8checksum/a1typeflag/a100link/a6magic/a2version/a32uname/a32gname/a8devmajor/a8devminor",
			$v_binary_data);

		// ----- Extract the checksum for check
		$v_header['checksum'] = OctDec(trim($v_data['checksum']));
		TrFctMessage(__FILE__, __LINE__, 3, "File checksum : $v_header[checksum]");
		if ($v_header['checksum'] != $v_checksum) {
			TrFctMessage(__FILE__, __LINE__, 2,
				"File checksum is invalid : $v_checksum calculated, $v_header[checksum] expected");

			$v_header['filename'] = "";
			$v_header['status'] = "invalid_header";

			// ----- Look for last block (empty block)
			if (($v_checksum == 256) && ($v_header['checksum'] == 0)) {
				$v_header['status'] = "empty";
				// ----- Return
				TrFctEnd(__FILE__, __LINE__, $v_result, "End of archive found");

				return $v_result;
			}

			// ----- Error log
			PclErrorLog(-13, "Invalid checksum : $v_checksum calculated, $v_header[checksum] expected");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}
		TrFctMessage(__FILE__, __LINE__, 2, "File checksum is valid ($v_checksum)");

		// ----- Extract the properties
		$v_header['filename'] = trim($v_data['filename']);
		TrFctMessage(__FILE__, __LINE__, 2, "Name : '$v_header[filename]'");
		$v_header['mode'] = OctDec(trim($v_data['mode']));
		TrFctMessage(__FILE__, __LINE__, 2, "Mode : '" . DecOct($v_header['mode']) . "'");
		$v_header['uid'] = OctDec(trim($v_data['uid']));
		TrFctMessage(__FILE__, __LINE__, 2, "Uid : '$v_header[uid]'");
		$v_header['gid'] = OctDec(trim($v_data['gid']));
		TrFctMessage(__FILE__, __LINE__, 2, "Gid : '$v_header[gid]'");
		$v_header['size'] = OctDec(trim($v_data['size']));
		TrFctMessage(__FILE__, __LINE__, 2, "Size : '$v_header[size]'");
		$v_header['mtime'] = OctDec(trim($v_data['mtime']));
		TrFctMessage(__FILE__, __LINE__, 2, "Date : " . date("l dS of F Y h:i:s A", $v_header['mtime']));
		if (($v_header['typeflag'] = $v_data['typeflag']) == "5") {
			$v_header['size'] = 0;
			TrFctMessage(__FILE__, __LINE__, 2, "Size (folder) : '$v_header[size]'");
		}
		TrFctMessage(__FILE__, __LINE__, 2, "File typeflag : $v_header[typeflag]");
		/* ----- All these fields are removed form the header because they do not carry interesting info
    $v_header[link] = trim($v_data[link]);
    TrFctMessage(__FILE__, __LINE__, 2, "Linkname : $v_header[linkname]");
    $v_header[magic] = trim($v_data[magic]);
    TrFctMessage(__FILE__, __LINE__, 2, "Magic : $v_header[magic]");
    $v_header[version] = trim($v_data[version]);
    TrFctMessage(__FILE__, __LINE__, 2, "Version : $v_header[version]");
    $v_header[uname] = trim($v_data[uname]);
    TrFctMessage(__FILE__, __LINE__, 2, "Uname : $v_header[uname]");
    $v_header[gname] = trim($v_data[gname]);
    TrFctMessage(__FILE__, __LINE__, 2, "Gname : $v_header[gname]");
    $v_header[devmajor] = trim($v_data[devmajor]);
    TrFctMessage(__FILE__, __LINE__, 2, "Devmajor : $v_header[devmajor]");
    $v_header[devminor] = trim($v_data[devminor]);
    TrFctMessage(__FILE__, __LINE__, 2, "Devminor : $v_header[devminor]");
    */

		// ----- Set the status field
		$v_header['status'] = "ok";

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandlerDirCheck()
	// Description :
	//   Check if a directory exists, if not it creates it and all the parents directory
	//   which may be useful.
	// Parameters :
	//   $p_dir : Directory path to check (without / at the end).
	// Return Values :
	//    1 : OK
	//   -1 : Unable to create directory
	// --------------------------------------------------------------------------------
	function PclTarHandlerDirCheck($p_dir) {
		$v_result = 1;

		TrFctStart(__FILE__, __LINE__, "PclTarHandlerDirCheck", "$p_dir");

		// ----- Check the directory availability
		if ((is_dir($p_dir)) || ($p_dir == "")) {
			TrFctEnd(__FILE__, __LINE__, "'$p_dir' is a directory");

			return 1;
		}

		// ----- Look for file alone
		/*
    if (!strstr("$p_dir", "/"))
    {
      TrFctEnd(__FILE__, __LINE__,  "'$p_dir' is a file with no directory");
      return 1;
    }
    */

		// ----- Extract parent directory
		$p_parent_dir = dirname($p_dir);
		TrFctMessage(__FILE__, __LINE__, 3, "Parent directory is '$p_parent_dir'");

		// ----- Just a check
		if ($p_parent_dir != $p_dir) {
			// ----- Look for parent directory
			if ($p_parent_dir != "") {
				if (($v_result = PclTarHandlerDirCheck($p_parent_dir)) != 1) {
					TrFctEnd(__FILE__, __LINE__, $v_result);

					return $v_result;
				}
			}
		}

		// ----- Create the directory
		TrFctMessage(__FILE__, __LINE__, 3, "Create directory '$p_dir'");
		if (!@mkdir($p_dir, 0777)) {
			// ----- Error log
			PclErrorLog(-8, "Unable to create directory '$p_dir'");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

			return PclErrorCode();
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result, "Directory '$p_dir' created");

		return $v_result;
	}

	// --------------------------------------------------------------------------------

	// --------------------------------------------------------------------------------
	// Function : PclTarHandleExtension()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandleExtension($p_tarname) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandleExtension", "tar=$p_tarname");

		// ----- Look for file extension
		if ((substr($p_tarname, -7) == ".tar.gz") || (substr($p_tarname, -4) == ".tgz")) {
			TrFctMessage(__FILE__, __LINE__, 2, "Archive is a gzip tar");
			$p_mode = "tgz";
		} else {
			if (substr($p_tarname, -4) == ".tar") {
				TrFctMessage(__FILE__, __LINE__, 2, "Archive is a tar");
				$p_mode = "tar";
			} else {
				// ----- Error log
				PclErrorLog(-9, "Invalid archive extension");

				TrFctMessage(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

				$p_mode = "";
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $p_mode);

		return $p_mode;
	}

	// --------------------------------------------------------------------------------


	// --------------------------------------------------------------------------------
	// Function : PclTarHandlePathReduction()
	// Description :
	// Parameters :
	// Return Values :
	// --------------------------------------------------------------------------------
	function PclTarHandlePathReduction($p_dir) {
		TrFctStart(__FILE__, __LINE__, "PclTarHandlePathReduction", "dir='$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 : "");
						}
					}
				}
			}
		}

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);

		return $v_result;
	}

	// --------------------------------------------------------------------------------


// ----- End of double include look
}
