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Edit File: pclzip.lib.php

<?php
// --------------------------------------------------------------------------------
// PhpConcept Library - Zip Module 2.8.2
// --------------------------------------------------------------------------------
// License GNU/LGPL - Vincent Blavet - August 2009
// http://www.phpconcept.net
// --------------------------------------------------------------------------------
//
// Presentation :
//   PclZip is a PHP library that manage ZIP archives.
//   So far tests show that archives generated by PclZip are readable by
//   WinZip application and other tools.
//
// Description :
//   See readme.txt 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.
//
// --------------------------------------------------------------------------------
// $Id: pclzip.lib.php,v 1.60 2009/09/30 21:01:04 vblavet Exp $
// --------------------------------------------------------------------------------

// ----- Constants
  if (!defined('PCLZIP_READ_BLOCK_SIZE')) {
    define( 'PCLZIP_READ_BLOCK_SIZE', 2048 );
  }
  
  // ----- File list separator
  // In version 1.x of PclZip, the separator for file list is a space
  // (which is not a very smart choice, specifically for windows paths !).
  // A better separator should be a comma (,). This constant gives you the
  // abilty to change that.
  // However notice that changing this value, may have impact on existing
  // scripts, using space separated filenames.
  // Recommanded values for compatibility with older versions :
  //define( 'PCLZIP_SEPARATOR', ' ' );
  // Recommanded values for smart separation of filenames.
  if (!defined('PCLZIP_SEPARATOR')) {
    define( 'PCLZIP_SEPARATOR', ',' );
  }

// ----- Error configuration
  // 0 : PclZip Class integrated error handling
  // 1 : PclError external library error handling. By enabling this
  //     you must ensure that you have included PclError library.
  // [2,...] : reserved for futur use
  if (!defined('PCLZIP_ERROR_EXTERNAL')) {
    define( 'PCLZIP_ERROR_EXTERNAL', 0 );
  }

// ----- Optional static temporary directory
  //       By default temporary files are generated in the script current
  //       path.
  //       If defined :
  //       - MUST BE terminated by a '/'.
  //       - MUST be a valid, already created directory
  //       Samples :
  // define( 'PCLZIP_TEMPORARY_DIR', '/temp/' );
  // define( 'PCLZIP_TEMPORARY_DIR', 'C:/Temp/' );
  if (!defined('PCLZIP_TEMPORARY_DIR')) {
    define( 'PCLZIP_TEMPORARY_DIR', '' );
  }

// ----- Optional threshold ratio for use of temporary files
  //       Pclzip sense the size of the file to add/extract and decide to
  //       use or not temporary file. The algorythm is looking for 
  //       memory_limit of PHP and apply a ratio.
  //       threshold = memory_limit * ratio.
  //       Recommended values are under 0.5. Default 0.47.
  //       Samples :
  // define( 'PCLZIP_TEMPORARY_FILE_RATIO', 0.5 );
  if (!defined('PCLZIP_TEMPORARY_FILE_RATIO')) {
    define( 'PCLZIP_TEMPORARY_FILE_RATIO', 0.47 );
  }

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

// ----- Global variables
  $g_pclzip_version = "2.8.2";

// ----- 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. 255)
  //   -6 : Not a valid zip 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
  //  -14 : Invalid archive size
  define( 'PCLZIP_ERR_USER_ABORTED', 2 );
  define( 'PCLZIP_ERR_NO_ERROR', 0 );
  define( 'PCLZIP_ERR_WRITE_OPEN_FAIL', -1 );
  define( 'PCLZIP_ERR_READ_OPEN_FAIL', -2 );
  define( 'PCLZIP_ERR_INVALID_PARAMETER', -3 );
  define( 'PCLZIP_ERR_MISSING_FILE', -4 );
  define( 'PCLZIP_ERR_FILENAME_TOO_LONG', -5 );
  define( 'PCLZIP_ERR_INVALID_ZIP', -6 );
  define( 'PCLZIP_ERR_BAD_EXTRACTED_FILE', -7 );
  define( 'PCLZIP_ERR_DIR_CREATE_FAIL', -8 );
  define( 'PCLZIP_ERR_BAD_EXTENSION', -9 );
  define( 'PCLZIP_ERR_BAD_FORMAT', -10 );
  define( 'PCLZIP_ERR_DELETE_FILE_FAIL', -11 );
  define( 'PCLZIP_ERR_RENAME_FILE_FAIL', -12 );
  define( 'PCLZIP_ERR_BAD_CHECKSUM', -13 );
  define( 'PCLZIP_ERR_INVALID_ARCHIVE_ZIP', -14 );
  define( 'PCLZIP_ERR_MISSING_OPTION_VALUE', -15 );
  define( 'PCLZIP_ERR_INVALID_OPTION_VALUE', -16 );
  define( 'PCLZIP_ERR_ALREADY_A_DIRECTORY', -17 );
  define( 'PCLZIP_ERR_UNSUPPORTED_COMPRESSION', -18 );
  define( 'PCLZIP_ERR_UNSUPPORTED_ENCRYPTION', -19 );
  define( 'PCLZIP_ERR_INVALID_ATTRIBUTE_VALUE', -20 );
  define( 'PCLZIP_ERR_DIRECTORY_RESTRICTION', -21 );

// ----- Options values
  define( 'PCLZIP_OPT_PATH', 77001 );
  define( 'PCLZIP_OPT_ADD_PATH', 77002 );
  define( 'PCLZIP_OPT_REMOVE_PATH', 77003 );
  define( 'PCLZIP_OPT_REMOVE_ALL_PATH', 77004 );
  define( 'PCLZIP_OPT_SET_CHMOD', 77005 );
  define( 'PCLZIP_OPT_EXTRACT_AS_STRING', 77006 );
  define( 'PCLZIP_OPT_NO_COMPRESSION', 77007 );
  define( 'PCLZIP_OPT_BY_NAME', 77008 );
  define( 'PCLZIP_OPT_BY_INDEX', 77009 );
  define( 'PCLZIP_OPT_BY_EREG', 77010 );
  define( 'PCLZIP_OPT_BY_PREG', 77011 );
  define( 'PCLZIP_OPT_COMMENT', 77012 );
  define( 'PCLZIP_OPT_ADD_COMMENT', 77013 );
  define( 'PCLZIP_OPT_PREPEND_COMMENT', 77014 );
  define( 'PCLZIP_OPT_EXTRACT_IN_OUTPUT', 77015 );
  define( 'PCLZIP_OPT_REPLACE_NEWER', 77016 );
  define( 'PCLZIP_OPT_STOP_ON_ERROR', 77017 );
  // Having big trouble with crypt. Need to multiply 2 long int
  // which is not correctly supported by PHP ...
  //define( 'PCLZIP_OPT_CRYPT', 77018 );
  define( 'PCLZIP_OPT_EXTRACT_DIR_RESTRICTION', 77019 );
  define( 'PCLZIP_OPT_TEMP_FILE_THRESHOLD', 77020 );
  define( 'PCLZIP_OPT_ADD_TEMP_FILE_THRESHOLD', 77020 ); // alias
  define( 'PCLZIP_OPT_TEMP_FILE_ON', 77021 );
  define( 'PCLZIP_OPT_ADD_TEMP_FILE_ON', 77021 ); // alias
  define( 'PCLZIP_OPT_TEMP_FILE_OFF', 77022 );
  define( 'PCLZIP_OPT_ADD_TEMP_FILE_OFF', 77022 ); // alias
  
  // ----- File description attributes
  define( 'PCLZIP_ATT_FILE_NAME', 79001 );
  define( 'PCLZIP_ATT_FILE_NEW_SHORT_NAME', 79002 );
  define( 'PCLZIP_ATT_FILE_NEW_FULL_NAME', 79003 );
  define( 'PCLZIP_ATT_FILE_MTIME', 79004 );
  define( 'PCLZIP_ATT_FILE_CONTENT', 79005 );
  define( 'PCLZIP_ATT_FILE_COMMENT', 79006 );

// ----- Call backs values
  define( 'PCLZIP_CB_PRE_EXTRACT', 78001 );
  define( 'PCLZIP_CB_POST_EXTRACT', 78002 );
  define( 'PCLZIP_CB_PRE_ADD', 78003 );
  define( 'PCLZIP_CB_POST_ADD', 78004 );
  /* For futur use
  define( 'PCLZIP_CB_PRE_LIST', 78005 );
  define( 'PCLZIP_CB_POST_LIST', 78006 );
  define( 'PCLZIP_CB_PRE_DELETE', 78007 );
  define( 'PCLZIP_CB_POST_DELETE', 78008 );
  */

// --------------------------------------------------------------------------------
  // Class : PclZip
  // Description :
  //   PclZip is the class that represent a Zip archive.
  //   The public methods allow the manipulation of the archive.
  // Attributes :
  //   Attributes must not be accessed directly.
  // Methods :
  //   PclZip() : Object creator
  //   create() : Creates the Zip archive
  //   listContent() : List the content of the Zip archive
  //   extract() : Extract the content of the archive
  //   properties() : List the properties of the archive
  // --------------------------------------------------------------------------------
  class PclZip
  {
    // ----- Filename of the zip file
    var $zipname = '';

// ----- File descriptor of the zip file
    var $zip_fd = 0;

// ----- Internal error handling
    var $error_code = 1;
    var $error_string = '';
    
    // ----- Current status of the magic_quotes_runtime
    // This value store the php configuration for magic_quotes
    // The class can then disable the magic_quotes and reset it after
    var $magic_quotes_status;

// --------------------------------------------------------------------------------
  // Function : PclZip()
  // Description :
  //   Creates a PclZip object and set the name of the associated Zip archive
  //   filename.
  //   Note that no real action is taken, if the archive does not exist it is not
  //   created. Use create() for that.
  // --------------------------------------------------------------------------------
  function PclZip($p_zipname)
  {

// ----- Tests the zlib
    if (!function_exists('gzopen'))
    {
      die('Abort '.basename(__FILE__).' : Missing zlib extensions');
    }

// ----- Set the attributes
    $this->zipname = $p_zipname;
    $this->zip_fd = 0;
    $this->magic_quotes_status = -1;

// ----- Return
    return;
  }
  // --------------------------------------------------------------------------------

// --------------------------------------------------------------------------------
  // Function :
  //   create($p_filelist, $p_add_dir="", $p_remove_dir="")
  //   create($p_filelist, $p_option, $p_option_value, ...)
  // Description :
  //   This method supports two different synopsis. The first one is historical.
  //   This method creates a Zip Archive. The Zip file is created in the
  //   filesystem. The files and directories indicated in $p_filelist
  //   are added in the archive. See the parameters description for the
  //   supported format of $p_filelist.
  //   When a directory is in the list, the directory and its content is added
  //   in the archive.
  //   In this synopsis, the function takes an optional variable list of
  //   options. See bellow the supported options.
  // Parameters :
  //   $p_filelist : An array containing file or directory names, or
  //                 a string containing one filename or one directory name, or
  //                 a string containing a list of filenames and/or directory
  //                 names separated by spaces.
  //   $p_add_dir : A path to add before the real path of the archived file,
  //                in order to have it memorized in the archive.
  //   $p_remove_dir : A path to remove from the real path of the file to archive,
  //                   in order to have a shorter path memorized in the archive.
  //                   When $p_add_dir and $p_remove_dir are set, $p_remove_dir
  //                   is removed first, before $p_add_dir is added.
  // Options :
  //   PCLZIP_OPT_ADD_PATH :
  //   PCLZIP_OPT_REMOVE_PATH :
  //   PCLZIP_OPT_REMOVE_ALL_PATH :
  //   PCLZIP_OPT_COMMENT :
  //   PCLZIP_CB_PRE_ADD :
  //   PCLZIP_CB_POST_ADD :
  // Return Values :
  //   0 on failure,
  //   The list of the added files, with a status of the add action.
  //   (see PclZip::listContent() for list entry format)
  // --------------------------------------------------------------------------------
  function create($p_filelist)
  {
    $v_result=1;

// ----- Reset the error handler
    $this->privErrorReset();

// ----- Set default values
    $v_options = array();
    $v_options[PCLZIP_OPT_NO_COMPRESSION] = FALSE;

// ----- Look for variable options arguments
    $v_size = func_num_args();

// ----- Look for arguments
    if ($v_size > 1) {
      // ----- Get the arguments
      $v_arg_list = func_get_args();

// ----- Remove from the options list the first argument
      array_shift($v_arg_list);
      $v_size--;

// ----- Look for first arg
      if ((is_integer($v_arg_list[0])) && ($v_arg_list[0] > 77000)) {

// ----- Parse the options
        $v_result = $this->privParseOptions($v_arg_list, $v_size, $v_options,
                                            array (PCLZIP_OPT_REMOVE_PATH => 'optional',
                                                   PCLZIP_OPT_REMOVE_ALL_PATH => 'optional',
                                                   PCLZIP_OPT_ADD_PATH => 'optional',
                                                   PCLZIP_CB_PRE_ADD => 'optional',
                                                   PCLZIP_CB_POST_ADD => 'optional',
                                                   PCLZIP_OPT_NO_COMPRESSION => 'optional',
                                                   PCLZIP_OPT_COMMENT => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_THRESHOLD => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_ON => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_OFF => 'optional'
                                                   //, PCLZIP_OPT_CRYPT => 'optional'
                                             ));
        if ($v_result != 1) {
          return 0;
        }
      }

// ----- Look for 2 args
      // Here we need to support the first historic synopsis of the
      // method.
      else {

// ----- Get the first argument
        $v_options[PCLZIP_OPT_ADD_PATH] = $v_arg_list[0];

// ----- Look for the optional second argument
        if ($v_size == 2) {
          $v_options[PCLZIP_OPT_REMOVE_PATH] = $v_arg_list[1];
        }
        else if ($v_size > 2) {
          PclZip::privErrorLog(PCLZIP_ERR_INVALID_PARAMETER,
		                       "Invalid number / type of arguments");
          return 0;
        }
      }
    }
    
    // ----- Look for default option values
    $this->privOptionDefaultThreshold($v_options);

// ----- Init
    $v_string_list = array();
    $v_att_list = array();
    $v_filedescr_list = array();
    $p_result_list = array();
    
    // ----- Look if the $p_filelist is really an array
    if (is_array($p_filelist)) {
    
      // ----- Look if the first element is also an array
      //       This will mean that this is a file description entry
      if (isset($p_filelist[0]) && is_array($p_filelist[0])) {
        $v_att_list = $p_filelist;
      }
      
      // ----- The list is a list of string names
      else {
        $v_string_list = $p_filelist;
      }
    }

// ----- Look if the $p_filelist is a string
    else if (is_string($p_filelist)) {
      // ----- Create a list from the string
      $v_string_list = explode(PCLZIP_SEPARATOR, $p_filelist);
    }

// ----- Invalid variable type for $p_filelist
    else {
      PclZip::privErrorLog(PCLZIP_ERR_INVALID_PARAMETER, "Invalid variable type p_filelist");
      return 0;
    }
    
    // ----- Reformat the string list
    if (sizeof($v_string_list) != 0) {
      foreach ($v_string_list as $v_string) {
        if ($v_string != '') {
          $v_att_list[][PCLZIP_ATT_FILE_NAME] = $v_string;
        }
        else {
        }
      }
    }
    
    // ----- For each file in the list check the attributes
    $v_supported_attributes
    = array ( PCLZIP_ATT_FILE_NAME => 'mandatory'
             ,PCLZIP_ATT_FILE_NEW_SHORT_NAME => 'optional'
             ,PCLZIP_ATT_FILE_NEW_FULL_NAME => 'optional'
             ,PCLZIP_ATT_FILE_MTIME => 'optional'
             ,PCLZIP_ATT_FILE_CONTENT => 'optional'
             ,PCLZIP_ATT_FILE_COMMENT => 'optional'
						);
    foreach ($v_att_list as $v_entry) {
      $v_result = $this->privFileDescrParseAtt($v_entry,
                                               $v_filedescr_list[],
                                               $v_options,
                                               $v_supported_attributes);
      if ($v_result != 1) {
        return 0;
      }
    }

// ----- Expand the filelist (expand directories)
    $v_result = $this->privFileDescrExpand($v_filedescr_list, $v_options);
    if ($v_result != 1) {
      return 0;
    }

// ----- Call the create fct
    $v_result = $this->privCreate($v_filedescr_list, $p_result_list, $v_options);
    if ($v_result != 1) {
      return 0;
    }

// ----- Return
    return $p_result_list;
  }
  // --------------------------------------------------------------------------------

// --------------------------------------------------------------------------------
  // Function :
  //   add($p_filelist, $p_add_dir="", $p_remove_dir="")
  //   add($p_filelist, $p_option, $p_option_value, ...)
  // Description :
  //   This method supports two synopsis. The first one is historical.
  //   This methods add the list of files in an existing archive.
  //   If a file with the same name already exists, it is added at the end of the
  //   archive, the first one is still present.
  //   If the archive does not exist, it is created.
  // Parameters :
  //   $p_filelist : An array containing file or directory names, or
  //                 a string containing one filename or one directory name, or
  //                 a string containing a list of filenames and/or directory
  //                 names separated by spaces.
  //   $p_add_dir : A path to add before the real path of the archived file,
  //                in order to have it memorized in the archive.
  //   $p_remove_dir : A path to remove from the real path of the file to archive,
  //                   in order to have a shorter path memorized in the archive.
  //                   When $p_add_dir and $p_remove_dir are set, $p_remove_dir
  //                   is removed first, before $p_add_dir is added.
  // Options :
  //   PCLZIP_OPT_ADD_PATH :
  //   PCLZIP_OPT_REMOVE_PATH :
  //   PCLZIP_OPT_REMOVE_ALL_PATH :
  //   PCLZIP_OPT_COMMENT :
  //   PCLZIP_OPT_ADD_COMMENT :
  //   PCLZIP_OPT_PREPEND_COMMENT :
  //   PCLZIP_CB_PRE_ADD :
  //   PCLZIP_CB_POST_ADD :
  // Return Values :
  //   0 on failure,
  //   The list of the added files, with a status of the add action.
  //   (see PclZip::listContent() for list entry format)
  // --------------------------------------------------------------------------------
  function add($p_filelist)
  {
    $v_result=1;

// ----- Reset the error handler
    $this->privErrorReset();

// ----- Set default values
    $v_options = array();
    $v_options[PCLZIP_OPT_NO_COMPRESSION] = FALSE;

// ----- Look for variable options arguments
    $v_size = func_num_args();

// ----- Look for arguments
    if ($v_size > 1) {
      // ----- Get the arguments
      $v_arg_list = func_get_args();

// ----- Remove form the options list the first argument
      array_shift($v_arg_list);
      $v_size--;

// ----- Look for first arg
      if ((is_integer($v_arg_list[0])) && ($v_arg_list[0] > 77000)) {

// ----- Parse the options
        $v_result = $this->privParseOptions($v_arg_list, $v_size, $v_options,
                                            array (PCLZIP_OPT_REMOVE_PATH => 'optional',
                                                   PCLZIP_OPT_REMOVE_ALL_PATH => 'optional',
                                                   PCLZIP_OPT_ADD_PATH => 'optional',
                                                   PCLZIP_CB_PRE_ADD => 'optional',
                                                   PCLZIP_CB_POST_ADD => 'optional',
                                                   PCLZIP_OPT_NO_COMPRESSION => 'optional',
                                                   PCLZIP_OPT_COMMENT => 'optional',
                                                   PCLZIP_OPT_ADD_COMMENT => 'optional',
                                                   PCLZIP_OPT_PREPEND_COMMENT => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_THRESHOLD => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_ON => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_OFF => 'optional'
                                                   //, PCLZIP_OPT_CRYPT => 'optional'
												   ));
        if ($v_result != 1) {
          return 0;
        }
      }

// ----- Look for 2 args
      // Here we need to support the first historic synopsis of the
      // method.
      else {

// ----- Get the first argument
        $v_options[PCLZIP_OPT_ADD_PATH] = $v_add_path = $v_arg_list[0];

// ----- Look for the optional second argument
        if ($v_size == 2) {
          $v_options[PCLZIP_OPT_REMOVE_PATH] = $v_arg_list[1];
        }
        else if ($v_size > 2) {
          // ----- Error log
          PclZip::privErrorLog(PCLZIP_ERR_INVALID_PARAMETER, "Invalid number / type of arguments");

// ----- Return
          return 0;
        }
      }
    }

// ----- Look for default option values
    $this->privOptionDefaultThreshold($v_options);

// ----- Look if the $p_filelist is a string
    else if (is_string($p_filelist)) {
      // ----- Create a list from the string
      $v_string_list = explode(PCLZIP_SEPARATOR, $p_filelist);
    }

// ----- Invalid variable type for $p_filelist
    else {
      PclZip::privErrorLog(PCLZIP_ERR_INVALID_PARAMETER, "Invalid variable type '".gettype($p_filelist)."' for p_filelist");
      return 0;
    }
    
    // ----- Reformat the string list
    if (sizeof($v_string_list) != 0) {
      foreach ($v_string_list as $v_string) {
        $v_att_list[][PCLZIP_ATT_FILE_NAME] = $v_string;
      }
    }
    
    // ----- For each file in the list check the attributes
    $v_supported_attributes
    = array ( PCLZIP_ATT_FILE_NAME => 'mandatory'
             ,PCLZIP_ATT_FILE_NEW_SHORT_NAME => 'optional'
             ,PCLZIP_ATT_FILE_NEW_FULL_NAME => 'optional'
             ,PCLZIP_ATT_FILE_MTIME => 'optional'
             ,PCLZIP_ATT_FILE_CONTENT => 'optional'
             ,PCLZIP_ATT_FILE_COMMENT => 'optional'
						);
    foreach ($v_att_list as $v_entry) {
      $v_result = $this->privFileDescrParseAtt($v_entry,
                                               $v_filedescr_list[],
                                               $v_options,
                                               $v_supported_attributes);
      if ($v_result != 1) {
        return 0;
      }
    }

// ----- Expand the filelist (expand directories)
    $v_result = $this->privFileDescrExpand($v_filedescr_list, $v_options);
    if ($v_result != 1) {
      return 0;
    }

// ----- Call the create fct
    $v_result = $this->privAdd($v_filedescr_list, $p_result_list, $v_options);
    if ($v_result != 1) {
      return 0;
    }

// ----- Return
    return $p_result_list;
  }
  // --------------------------------------------------------------------------------

// --------------------------------------------------------------------------------
  // Function : listContent()
  // Description :
  //   This public method, gives the list of the files and directories, with their
  //   properties.
  //   The properties of each entries in the list are (used also in other functions) :
  //     filename : Name of the file. For a create or add action it is the filename
  //                given by the user. For an extract function it is the filename
  //                of the extracted file.
  //     stored_filename : Name of the file / directory stored in the archive.
  //     size : Size of the stored file.
  //     compressed_size : Size of the file's data compressed in the archive
  //                       (without the headers overhead)
  //     mtime : Last known modification date of the file (UNIX timestamp)
  //     comment : Comment associated with the file
  //     folder : true | false
  //     index : index of the file in the archive
  //     status : status of the action (depending of the action) :
  //              Values are :
  //                ok : OK !
  //                filtered : the file / dir is not extracted (filtered by user)
  //                already_a_directory : the file can not be extracted because a
  //                                      directory with the same name already exists
  //                write_protected : the file can not be extracted because a file
  //                                  with the same name already exists and is
  //                                  write protected
  //                newer_exist : the file was not extracted because a newer file exists
  //                path_creation_fail : the file is not extracted because the folder
  //                                     does not exist and can not be created
  //                write_error : the file was not extracted because there was a
  //                              error while writing the file
  //                read_error : the file was not extracted because there was a error
  //                             while reading the file
  //                invalid_header : the file was not extracted because of an archive
  //                                 format error (bad file header)
  //   Note that each time a method can continue operating when there
  //   is an action error on a file, the error is only logged in the file status.
  // Return Values :
  //   0 on an unrecoverable failure,
  //   The list of the files in the archive.
  // --------------------------------------------------------------------------------
  function listContent()
  {
    $v_result=1;

// ----- Reset the error handler
    $this->privErrorReset();

// ----- Check archive
    if (!$this->privCheckFormat()) {
      return(0);
    }

// ----- Call the extracting fct
    $p_list = array();
    if (($v_result = $this->privList($p_list)) != 1)
    {
      unset($p_list);
      return(0);
    }

// ----- Return
    return $p_list;
  }
  // --------------------------------------------------------------------------------

// --------------------------------------------------------------------------------
  // Function :
  //   extract($p_path="./", $p_remove_path="")
  //   extract([$p_option, $p_option_value, ...])
  // Description :
  //   This method supports two synopsis. The first one is historical.
  //   This method extract all the files / directories from the archive to the
  //   folder indicated in $p_path.
  //   If you want to ignore the 'root' part of path of the memorized files
  //   you can indicate this in the optional $p_remove_path parameter.
  //   By default, if a newer file with the same name already exists, the
  //   file is not extracted.
  //
  //   If both PCLZIP_OPT_PATH and PCLZIP_OPT_ADD_PATH aoptions
  //   are used, the path indicated in PCLZIP_OPT_ADD_PATH is append
  //   at the end of the path value of PCLZIP_OPT_PATH.
  // Parameters :
  //   $p_path : Path where the files and directories are to be extracted
  //   $p_remove_path : First part ('root' part) of the memorized path
  //                    (if any similar) to remove while extracting.
  // Options :
  //   PCLZIP_OPT_PATH :
  //   PCLZIP_OPT_ADD_PATH :
  //   PCLZIP_OPT_REMOVE_PATH :
  //   PCLZIP_OPT_REMOVE_ALL_PATH :
  //   PCLZIP_CB_PRE_EXTRACT :
  //   PCLZIP_CB_POST_EXTRACT :
  // Return Values :
  //   0 or a negative value on failure,
  //   The list of the extracted files, with a status of the action.
  //   (see PclZip::listContent() for list entry format)
  // --------------------------------------------------------------------------------
  function extract()
  {
    $v_result=1;

// ----- Reset the error handler
    $this->privErrorReset();

// ----- Check archive
    if (!$this->privCheckFormat()) {
      return(0);
    }

// ----- Set default values
    $v_options = array();
//    $v_path = "./";
    $v_path = '';
    $v_remove_path = "";
    $v_remove_all_path = false;

// ----- Look for variable options arguments
    $v_size = func_num_args();

// ----- Default values for option
    $v_options[PCLZIP_OPT_EXTRACT_AS_STRING] = FALSE;

// ----- Look for arguments
    if ($v_size > 0) {
      // ----- Get the arguments
      $v_arg_list = func_get_args();

// ----- Look for first arg
      if ((is_integer($v_arg_list[0])) && ($v_arg_list[0] > 77000)) {

// ----- Parse the options
        $v_result = $this->privParseOptions($v_arg_list, $v_size, $v_options,
                                            array (PCLZIP_OPT_PATH => 'optional',
                                                   PCLZIP_OPT_REMOVE_PATH => 'optional',
                                                   PCLZIP_OPT_REMOVE_ALL_PATH => 'optional',
                                                   PCLZIP_OPT_ADD_PATH => 'optional',
                                                   PCLZIP_CB_PRE_EXTRACT => 'optional',
                                                   PCLZIP_CB_POST_EXTRACT => 'optional',
                                                   PCLZIP_OPT_SET_CHMOD => 'optional',
                                                   PCLZIP_OPT_BY_NAME => 'optional',
                                                   PCLZIP_OPT_BY_EREG => 'optional',
                                                   PCLZIP_OPT_BY_PREG => 'optional',
                                                   PCLZIP_OPT_BY_INDEX => 'optional',
                                                   PCLZIP_OPT_EXTRACT_AS_STRING => 'optional',
                                                   PCLZIP_OPT_EXTRACT_IN_OUTPUT => 'optional',
                                                   PCLZIP_OPT_REPLACE_NEWER => 'optional'
                                                   ,PCLZIP_OPT_STOP_ON_ERROR => 'optional'
                                                   ,PCLZIP_OPT_EXTRACT_DIR_RESTRICTION => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_THRESHOLD => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_ON => 'optional',
                                                   PCLZIP_OPT_TEMP_FILE_OFF => 'optional'
												    ));
        if ($v_result != 1) {
          return 0;
        }

// ----- Set the arguments
        if (isset($v_options[PCLZIP_OPT_PATH])) {
          $v_path = $v_options[PCLZIP_OPT_PATH];
        }
        if (isset($v_options[PCLZIP_OPT_REMOVE_PATH])) {
          $v_remove_path = $v_options[PCLZIP_OPT_REMOVE_PATH];
        }
        if (isset($v_options[PCLZIP_OPT_REMOVE_ALL_PATH])) {
          $v_remove_all_path = $v_options[PCLZIP_OPT_REMOVE_ALL_PATH];
        }
        if (isset($v_options[PCLZIP_OPT_ADD_PATH])) {
          // ----- Check for '/' in last path char
          if ((strlen($v_path) > 0) && (substr($v_path, -1) != '/')) {
            $v_path .= '/';
          }
          $v_path .= $v_options[PCLZIP_OPT_ADD_PATH];
        }
      }

// ----- Look for 2 args
      // Here we need to support the first historic synopsis of the
      // method.
      else {

// ----- Get the first argument
        $v_path = $v_arg_list[0];

// ----- Look for the optional second argument
        if ($v_size == 2) {
          $v_remove_path = $v_arg_list[1];
        }
        else if ($v_size > 2) {
          // ----- Error log
          PclZip::privErrorLog(PCLZIP_ERR_INVALID_PARAMETER, "Invalid number / type of arguments");

// ----- Return
          return 0;
        }
      }
    }

// ----- Look for default option values
    $this->privOptionDefaultThreshold($v_options);

// ----- Trace

// ----- Call the extracting fct
    $p_list = array();
    $v_result = $this->privExtractByRule($p_list, $v_path, $v_remove_path,
	                                     $v_remove_all_path, $v_options);
    if ($v_result < 1) {
      unset($p_list);
      return(0);
    }

// ----- Return
    return $p_list;
  }
  // --------------------------------------------------------------------------------

// --------------------------------------------------------------------------------
  // Function :
  //   extractByIndex($p_index, $p_path="./", $p_remove_path="")
  //   extractByIndex($p_index, [$p_option, $p_option_value, ...])
  // Description :
  //   This method supports two synopsis. The first one is historical.
  //   This method is doing a partial extract of the archive.
  //   The extracted files or folders are identified by their index in the
  //   archive (from 0 to n).
  //   Note that if the index identify a folder, only the folder entry is
  //   extracted, not all the files included in the archive.
  // Parameters :
  //   $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 and directories are to be extracted
  //   $p_remove_path : First part ('root' part) of the memorized path
  //                    (if any similar) to remove while extracting.
  // Options :
  //   PCLZIP_OPT_PATH :
  //   PCLZIP_OPT_ADD_PATH :
  //   PCLZIP_OPT_REMOVE_PATH :
  //   PCLZIP_OPT_REMOVE_ALL_PATH :
  //   PCLZIP_OPT_EXTRACT_AS_STRING : The files are extracted as strings and
  //     not as files.
  //     The resulting content is in a new field 'content' in the file
  //     structure.
  //     This option must be used alone (any other options are ignored).
  //   PCLZIP_CB_PRE_EXTRACT :
  //   PCLZIP_CB_POST_EXTRACT :
  // Return Values :
  //   0 on failure,
  //   The list of the extracted files, with a status of the action.
  //   (see PclZip::listContent() for list entry format)
  // --------------------------------------------------------------------------------
  //function extractByIndex($p_index, options...)
  function extractByIndex($p_index)
  {
    $v_result=1;