mambax7 / extcal

class/pcltar.lib.php

<?php
// --------------------------------------------------------------------------------
// PhpConcept Library - Tar Module 1.3.1
// --------------------------------------------------------------------------------
// License GNU/GPL - Vincent Blavet - January 2003
// http://www.phpconcept.net
// --------------------------------------------------------------------------------
//
// Presentation :
//   PclTar is a library that allow you to create a GNU TAR + GNU ZIP archive,
//   to add files or directories, to extract all the archive or a part of it.
//   So far tests show that the files generated by PclTar are readable by
//   gzip tools and WinZip application.
//
// Description :
//   See readme.txt (English & 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($gPcltarLibDir)) {
        $gPcltarLibDir = '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';

    // ----- 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 $gPcltarLibDir . '/pclerror.lib.php';
    }
    if (!defined('PCLTRACE_LIB')) {
        include $gPcltarLibDir . '/pcltrace.lib.php';
    }

    // --------------------------------------------------------------------------------
    // 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).
    // --------------------------------------------------------------------------------
    /**
     * @param              $p_tarname
     * @param string|array $p_filelist
     * @param string       $p_mode
     * @param string       $p_add_dir
     * @param string       $p_remove_dir
     *
     * @return int
     */
    function PclTarCreate($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).
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tarname
     * @param $p_filelist
     *
     * @return int
     */
    function PclTarAdd($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).
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param        $p_filelist
     * @param string $p_add_dir
     * @param string $p_remove_dir
     * @param string $p_mode
     *
     * @return array|int
     */
    function PclTarAddList($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; $i<count($v_list); ++$i)
    //              echo "Filename :'".$v_list[$i]['filename']."'<br>";
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param string $p_mode
     *
     * @return array|int
     */
    function PclTarList($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()
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param string $p_path
     * @param string $p_remove_path
     * @param string $p_mode
     *
     * @return int
     */
    function PclTarExtract($p_tarname, $p_path = './', $p_remove_path = '', $p_mode = '')
    {
        TrFctStart(__FILE__, __LINE__, 'PclTarExtract', "tar='$p_tarname', path='$p_path', remove_path='$p_remove_path', mode='$p_mode'");
        $v_result = 1;

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

                return 0;
            }
        }

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

            return 0;
        }

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

        return $p_list;
    }

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

    // --------------------------------------------------------------------------------
    // Function : PclTarExtractList()
    // Description :
    //   Extract the files present in the archive $p_tarname and specified in
    //   $p_filelist, in the directory
    //   $p_path. The relative path of the archived files are keep and become
    //   relative to $p_path.
    //   If a directory is 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()
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param        $p_filelist
     * @param string $p_path
     * @param string $p_remove_path
     * @param string $p_mode
     *
     * @return int
     */
    function PclTarExtractList($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()
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param        $p_index
     * @param string $p_path
     * @param string $p_remove_path
     * @param string $p_mode
     *
     * @return int
     */
    function PclTarExtractIndex($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 $p_index is really an integer
        if (is_int($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())
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param        $p_filelist
     * @param string $p_mode
     *
     * @return int
     */
    function PclTarDelete($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.
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param        $p_filelist
     * @param string $p_mode
     * @param string $p_add_dir
     * @param string $p_remove_dir
     *
     * @return int
     */
    function PclTarUpdate($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.
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param        $p_tarname_add
     * @param string $p_mode
     * @param string $p_mode_add
     *
     * @return int
     */
    function PclTarMerge($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-', true) . '.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 ($p_mode === 'tar') {
                        fwrite($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 ($p_mode === 'tar') {
                            fwrite($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param        $p_tarname
     * @param        $p_list
     * @param        $p_mode
     * @param string $p_add_dir
     * @param string $p_remove_dir
     *
     * @return int
     */
    function PclTarHandleCreate($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tarname
     * @param $p_list
     * @param $p_mode
     * @param $p_list_detail
     * @param $p_add_dir
     * @param $p_remove_dir
     *
     * @return int
     */
    function PclTarHandleAppend($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-', true) . '.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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tar
     * @param $p_list
     * @param $p_mode
     * @param $p_list_detail
     * @param $p_add_dir
     * @param $p_remove_dir
     *
     * @return int
     */
    function PclTarHandleAddList($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
        $v_nb = count($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 (count($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
                $v_path = '';
                if ($p_filename !== '.') {
                    $v_path = $p_filename . '/';
                }

                // ----- 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, $p_hdir, $p_hitem);
            } else {
                TrFctMessage(__FILE__, __LINE__, 4, 'File position after blocks =' . ($p_mode === 'tar' ? ftell($p_tar) : gztell($p_tar)));
            }
        }

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

        return $v_result;
    }

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

    // --------------------------------------------------------------------------------
    // Function : PclTarHandleAddFile()
    // Description :
    // Parameters :
    // Return Values :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tar
     * @param $p_filename
     * @param $p_mode
     * @param $p_header
     * @param $p_add_dir
     * @param $p_remove_dir
     *
     * @return int
     */
    function PclTarHandleAddFile($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 ((0 === strpos($p_filename, './')) || (0 === strpos($p_remove_dir, './'))) {
                if ((0 === strpos($p_filename, './')) && (0 !== strpos($p_remove_dir, './'))) {
                    $p_remove_dir = './' . $p_remove_dir;
                }
                if ((0 !== strpos($p_filename, './')) && (0 === strpos($p_remove_dir, './'))) {
                    $p_remove_dir = substr($p_remove_dir, 2);
                }
            }

            if (0 === strpos($p_filename, $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 ($p_mode === 'tar') {
                    fwrite($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tar
     * @param $p_filename
     * @param $p_mode
     * @param $p_header
     * @param $p_stored_filename
     *
     * @return int
     */
    function PclTarHandleHeader($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 ($p_mode === 'tar') {
            fwrite($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') {
            fwrite($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 ($p_mode === 'tar') {
            fwrite($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tar
     * @param $p_mode
     *
     * @return int
     */
    function PclTarHandleFooter($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') {
            fwrite($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tarname
     * @param $p_file_list
     * @param $p_list_detail
     * @param $p_mode
     * @param $p_path
     * @param $p_tar_mode
     * @param $p_remove_path
     *
     * @return int
     */
    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($p_path, 0, 3) != "../")))
        if ($p_path == '') {
            $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, $iMax = count($p_file_list); $i < $iMax; ++$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[$i]))
                            && (0 === strpos($v_header['filename'], $p_file_list[$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 (($p_remove_path != '') && (0 === strpos($v_header['filename'], $p_remove_path))) {
                    TrFctMessage(__FILE__, __LINE__, 3, "Found path '$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, -1);
                        TrFctMessage(__FILE__, __LINE__, 3, "Modified to [$p_path]");
                    }

                    // ----- Add the path
                    if (0 === strpos($v_header['filename'], '/')) {
                        $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;
                        $v_extract_file       = 0;
                    } // ----- Look if file is write protected
                    else {
                        if (!s_writable($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 = $v_header['filename'];
                    } else {
                        if (false === strpos($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)

The variable $v_filename does not exist. Did you forget to declare it?

                                        . "' ('"
                                        . $v_header['size']
                                        . "' expected). Archive may be corrupted.");

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

                        return PclErrorCode();
                    }

                    // ----- Trace
                    TrFctMessage(__FILE__, __LINE__, 2, 'Extraction done');
                } else {

This code seems to be duplicated across your project.

                    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 après 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']) {
                    $v_file_dir = '';
                }
                if (($v_file_dir === '') && (0 === strpos($v_header['filename'], '/'))) {
                    $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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tarname
     * @param $p_index_string
     * @param $p_list_detail
     * @param $p_path
     * @param $p_remove_path
     * @param $p_tar_mode
     *
     * @return int
     */
    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 (($p_path === '')
            || ((0 !== strpos($p_path, '/')) && (0 !== strpos($p_path, '../'))
                && (0 !== strpos($p_path, './')))
        ) {
            $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; ($i < count($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]);
            $v_size_index_list = count($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tar
     * @param $p_index_current
     * @param $p_index_start
     * @param $p_index_stop
     * @param $p_list_detail
     * @param $p_path
     * @param $p_remove_path
     * @param $p_tar_mode
     *
     * @return int
     */
    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
        $v_nb = count($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 après 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']) {
                    $v_file_dir = '';
                }
                if (($v_file_dir === '') && (0 === strpos($v_header['filename'], '/'))) {
                    $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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tar
     * @param $v_header
     * @param $p_path
     * @param $p_remove_path
     * @param $p_tar_mode
     *
     * @return int
     */
    function PclTarHandleExtractFile($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 (($p_remove_path != '') && (0 === strpos($v_header['filename'], $p_remove_path))) {
            TrFctMessage(__FILE__, __LINE__, 3, "Found path '$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, -1);
                TrFctMessage(__FILE__, __LINE__, 3, "Modified to [$p_path]");
            }

            // ----- Add the path
            if (0 === strpos($v_header['filename'], '/')) {
                $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;
                $v_extract_file       = 0;
            } // ----- Look if file is write protected
            else {
                if (!s_writable($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 {

This code seems to be duplicated across your project.

            if ($v_header['typeflag'] == '5') {
                $v_dir_to_check = $v_header['filename'];
            } else {
                if (false === strpos($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)

The variable $v_filename does not exist. Did you forget to declare it?

                                . "' ('"
                                . $v_header['size']
                                . "' expected). Archive may be corrupted.");

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

                return PclErrorCode();
            }

            // ----- Trace
            TrFctMessage(__FILE__, __LINE__, 2, 'Extraction done');
        } else {

This code seems to be duplicated across your project.

            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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tarname
     * @param $p_file_list
     * @param $p_list_detail
     * @param $p_tar_mode
     *
     * @return int
     */
    function PclTarHandleDelete($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-', true) . '.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-', true) . '.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 < count($p_file_list)) && (!$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 ($p_tar_mode === 'tar') {
                    fwrite($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 après 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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tarname
     * @param $p_file_list
     * @param $p_list_detail
     * @param $p_tar_mode
     * @param $p_add_dir
     * @param $p_remove_dir
     *
     * @return int
     */
    function PclTarHandleUpdate($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-', true) . '.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-', true) . '.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, $iMax = count($p_file_list); $i < $iMax; ++$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 (0 === strpos($p_file_list[$i], $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 < count($v_stored_list)) && (!$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 ($p_tar_mode === 'tar') {
                    fwrite($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, $iMax = count($p_file_list); $i < $iMax; ++$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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $v_binary_data
     * @param $v_header
     *
     * @return int
     */
    function PclTarHandleReadHeader($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 ('' === $v_binary_data) {
            $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
    // --------------------------------------------------------------------------------
    /**
     * @param $p_dir
     *
     * @return int
     */
    function PclTarHandlerDirCheck($p_dir)
    {
        $v_result = 1;

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

        // ----- Check the directory availability
        if (('' == $p_dir) || is_dir($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_tarname
     *
     * @return string
     */
    function PclTarHandleExtension($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 :
    // --------------------------------------------------------------------------------
    /**
     * @param $p_dir
     *
     * @return string
     */
    function PclTarHandlePathReduction($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 ($i = count($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 ((0 != $i) && ('' == $v_list[$i]) && ($i != (count($v_list) - 1))) {
                            // ----- Ignore only the double '//' in path,
                            // but not the first and last '/'
                        } else {
                            $v_result = $v_list[$i] . ($i != (count($v_list) - 1) ? '/' . $v_result : '');
                        }
                    }
                }
            }
        }

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

        return $v_result;
    }

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

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