[Sommaire] [Imprimer]

   1  <?php
   2  //
   3  // Definition of eZGZIPShellCompressionHandler class
   4  //
   5  // Created on: <13-Aug-2003 16:20:19 amos>
   6  //
   7  // SOFTWARE NAME: eZ publish
   8  // SOFTWARE RELEASE: 3.9.0
   9  // BUILD VERSION: 17785
  10  // COPYRIGHT NOTICE: Copyright (C) 1999-2006 eZ systems AS
  11  // SOFTWARE LICENSE: GNU General Public License v2.0
  12  // NOTICE: >
  13  //   This program is free software; you can redistribute it and/or
  14  //   modify it under the terms of version 2.0  of the GNU General
  15  //   Public License as published by the Free Software Foundation.
  16  //
  17  //   This program is distributed in the hope that it will be useful,
  18  //   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  //   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  //   GNU General Public License for more details.
  21  //
  22  //   You should have received a copy of version 2.0 of the GNU General
  23  //   Public License along with this program; if not, write to the Free
  24  //   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  25  //   MA 02110-1301, USA.
  26  //
  27  //
  28  
  29  /*! \file ezgzipshellcompressionhandler.php
  30  */
  31  
  32  /*!
  33    \class eZGZIPShellCompressionHandler ezgzipshellcompressionhandler.php
  34    \brief Handles files compressed with gzip using the shell commands
  35  
  36    Handles GZIP compression by executing the 'gzip' executable,
  37    without this the handler cannot work.
  38  
  39  NOTE: This is not done yet.
  40  */
  41  
  42  include_once ( 'lib/ezfile/classes/ezcompressionhandler.php' );
  43  
  44  class eZGZIPShellCompressionHandler extends eZCompressionHandler
  45  {
  46      /*!
  47      */
  48      function eZGZIPShellCompressionHandler()
  49      {
  50          $this->File = false;
  51          $thus->Level = false;
  52          $this->eZCompressionHandler( 'GZIP (shell)', 'gzipshell' );
  53      }
  54  
  55      /*!
  56       Sets the current compression level.
  57      */
  58      function setCompressionLevel( $level )
  59      {
  60          if ( $level < 0 or $level > 9 )
  61              $level = false;
  62          $this->Level = $level;
  63      }
  64  
  65      /*!
  66       \return the current compression level which is a number between 0 and 9,
  67               or \c false if the default is to be used.
  68      */
  69      function compressionLevel()
  70      {
  71          return $this->Level;
  72      }
  73  
  74      /*!
  75       \return true if this handler can be used.
  76      */
  77      function isAvailable()
  78      {
  79          return false;
  80      }
  81  
  82      function gunzipFile( $filename )
  83      {
  84          $command = 'gzip -dc $filename > $';
  85      }
  86  
  87      /*!
  88       \reimp
  89      */
  90      function doOpen( $filename, $mode )
  91      {
  92          $this->File = @gzopen( $filename, $mode );
  93      }
  94  
  95      /*!
  96       \reimp
  97      */
  98      function doClose()
  99      {
 100          return @gzclose( $this->File );
 101      }
 102  
 103      /*!
 104       \reimp
 105      */
 106      function doRead( $uncompressedLength = false )
 107      {
 108          return @gzread( $this->File, $uncompressedLength );
 109      }
 110  
 111      /*!
 112       \reimp
 113      */
 114      function doWrite( $data, $uncompressedLength = false )
 115      {
 116          return @gzwrite( $this->File, $uncompressedLength );
 117      }
 118  
 119      /*!
 120       \reimp
 121      */
 122      function doFlush()
 123      {
 124          return @fflush( $this->File );
 125      }
 126  
 127      /*!
 128       \reimp
 129      */
 130      function doSeek( $offset, $whence )
 131      {
 132          if ( $whence == SEEK_SET )
 133              $offset = $offset - gztell( $this->File );
 134          else if ( $whence == SEEK_END )
 135          {
 136              eZDebugSetting::writeError( 'lib-ezfile-gziplibz',
 137                                          "Seeking from end is not supported for gzipped files" );
 138              return false;
 139          }
 140          return @gzseek( $this->File, $offset );
 141      }
 142  
 143      /*!
 144       \reimp
 145      */
 146      function doRewind()
 147      {
 148          return @gzrewind( $this->File );
 149      }
 150  
 151      /*!
 152       \reimp
 153      */
 154      function doTell()
 155      {
 156          return @gztell( $this->File );
 157      }
 158  
 159      /*!
 160       \reimp
 161      */
 162      function doEOF()
 163      {
 164          return @gzeof( $this->File );
 165      }
 166  
 167      /*!
 168       \reimp
 169      */
 170      function doPasstrough()
 171      {
 172          return @gzpasstru( $this->File );
 173      }
 174  
 175      /*!
 176       \reimp
 177      */
 178      function compress( $source )
 179      {
 180          return @gzcompress( $source, $this->Level );
 181      }
 182  
 183      /*!
 184       \reimp
 185      */
 186      function decompress( $source )
 187      {
 188          return @gzuncompress( $source );
 189      }
 190  
 191      /*!
 192       \reimp
 193      */
 194      function errorString()
 195      {
 196          return false;
 197      }
 198  
 199      /*!
 200       \reimp
 201      */
 202      function errorNumber()
 203      {
 204          return false;
 205      }
 206  
 207      /// \privatesection
 208      /// File pointer, returned by gzopen
 209      var $File;
 210      /// The compression level
 211      var $Level;
 212  }
 213  
 214  ?>