/dist/webpagetest/www/lib/pcltar.lib.php3

<?

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

// 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 & Français) 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 = "lib";



  // ----- 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/...)

  $g_pcltar_extension = substr(strrchr(basename($PATH_TRANSLATED), '.'), 1);



  // ----- 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="")

  {

    TrFctStart(__FILE__, __LINE__, "PclTarCreate", "tar=$p_tarname, file='$p_filelist', 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, $v_tar_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 spécified 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, $v_tar_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, $v_tar_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, $v_tar_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, $v_tar_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="")

  {

    TrFctStart(__FILE__, __LINE__, "PclTarDelete", "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 (($v_result = PclTarHandleDelete($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");

      $v_tar_mode = "tgz";

    }

    else if (substr($p_tarname, -4) == ".tar")

    {

      TrFctMessage(__FILE__, __LINE__, 2, "Archive is a tar");

      $v_tar_mode = "tar";

    }

    else

    {

      // ----- Error log

      PclErrorLog(-9, "Invalid archive extension");



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



      $v_tar_mode = "";

    }



    // ----- Return

    TrFctEnd(__FILE__, __LINE__, $v_tar_mode);

    return $v_tar_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

}

?>