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   1  PEAR Libraries
   2  ====================================================================
   3  
   4  
   5  This directory (lib/pear) contains unmodified copies of some
   6  libraries from the standard PEAR distribution (http://pear.php.net).
   7  
   8  We include these in Moodle solely for the convenience of sites that
   9  may not have PEAR installed.
  10  
  11  If this directory is DELETED from Moodle then Moodle will search
  12  the standard PHP directories and use the PEAR libraries there instead.
  13  
  14  
  15  In detail, the libraries added here are:
  16  
  17  - PEAR HTML_Quickform:
  18      - Current version: 3.2.6
  19      - by Bertrand Mansion, Adam Daniel, Alexey Borzov
  20      - License: PHP (Permission given to Moodle to redistribute under GPL)
  21      - http://pear.php.net/package/HTML_Quickform
  22  - PEAR HTML_Quickform_Renderer_Tableless:
  23      - Current version: 0.3.4
  24      - by Mark Wiesemann
  25      - License: PHP (Permission given to Moodle to redistribute under GPL)
  26      - http://pear.php.net/package/HTML_QuickForm_Renderer_Tableless
  27  - PEAR HTML_QuickForm_DHTMLRulesTableless:
  28      - Current version: 0.1.2
  29      - by Alexey Borzov, Adam Daniel, Bertrand Mansion, Justin Patrin, Mark Wiesemann
  30      - License: PHP (Permission given to Moodle to redistribute under GPL)
  31      - http://pear.php.net/package/HTML_QuickForm_DHTMLRulesTableless
  32  - PEAR HTML_Common:
  33      - Current version: 1.2.2
  34      - by Adam Daniel, Bertrand Mansion, Klaus Guenther, Alexey Borzov,
  35      - License: PHP  (Permission given to Moodle to redistribute under GPL)
  36      - http://pear.php.net/package/HTML
  37  - PEAR main class:
  38      - Current version: 1.4.5
  39      - by Stig Bakken, Thomas V.V.Cox, Pierre-Alain Joye,
  40        Greg Beaver and Martin Jansen
  41      - License: PHP
  42      - http://pear.php.net/package/PEAR
  43  - PEAR HTTP_WebDAV_Server
  44      - Current version: HEAD @ 28-01-2008
  45      - by Hartmut Holzgraefe and Christian Stocker
  46      - License: BSD
  47      - http://pear.php.net/package/HTTP_WebDAV_Server
  48  - PEAR HTML_AJAX:
  49      - Current version: 0.5.6
  50      - by Elizabeth Smith, Arpad Ray, Joshua Eichorn, David Coallier and Laurent Yaish
  51      - License: LGPL
  52      - http://pear.php.net/package/HTML_AJAX/
  53  - PEAR Auth_RADIUS:
  54      - Current version: 1.0.6 (2008-04-13)
  55      - by Michael Bretterklieber
  56      - License: BSD
  57      - http://pear.php.net/package/Auth_RADIUS
  58  - PEAR Crypt_CHAP:
  59      - Current Version: 1.0.1 (2007-03-14)
  60      - by Michael Bretterklieber
  61      - License: BSD
  62      - http://pear.php.net/package/Crypt_CHAP
  63  
  64  ----------------------------------------------------------------
  65  A NOTE TO DEVELOPERS
  66  ================================================================
  67  
  68  We must not use these classes directly ever. Instead we must build
  69  and use wrapper classes to isolate Moodle code from internal PEAR
  70  implementations, allowing us to migrate if needed to other
  71  libraries in the future. For an example of wrapped classes,
  72  see the excel.class.lib file, that includes code to build
  73  Excel files using the cool library inside PEAR, but using
  74  the old calls used before Moodle 1.6 to maintain compatibility.
  75  
  76  Please, don't forget it! Always use wrapper classes/functions!
  77  
  78  Ciao,
  79  Eloy Lafuente, 2005-12-17 :-)
  80  
  81  
  82  
  83  ----------------------------------------------------------------
  84  A NOTE ON THE PHP LICENSE AND MOODLE
  85  ================================================================
  86  
  87  Everything in Moodle in pure GPL.  This pear directory is the only
  88  part of the distribution that is not.
  89  
  90  There is some question about how PHP-licensed software can be
  91  included within a GPL-licensed distribution like Moodle, specifically
  92  the clause that annoyingly says no derivative of the software can
  93  include the name PHP.
  94  
  95  We don't intend to rename Moodle to anything of the sort, obviously,
  96  but to help people downstream who could possibly want to do so,
  97  we have sought special permission from the authors of these classes
  98  to allow us an exemption on this point so that we don't need to
  99  change our nice clean GPL license.
 100  
 101  Several authors have given Moodle explicit permission to distribute
 102  their PHP-licensed PEAR classes in the Moodle distribution, allowing
 103  anybody using these classes ONLY as part of the Moodle distribution
 104  exemption from clauses of the PHP license that could cause
 105  conflict with the main GNU Public License that Moodle uses.
 106  
 107  We are still waiting to hear back from the others but we assume
 108  for now that it will likewise be OK.
 109  
 110  If you are at all worried about this situation you can simply delete
 111  this directory from Moodle and it will use your installed PEAR
 112  libraries instead.
 113  
 114  Cheers,
 115  Martin Dougiamas, 2 April 2006