include/diogenes/diogenes.flagset.inc.php

   1 <?php
   2 /*
   3  * Copyright (C) 2003-2004 Polytechnique.org
   4  * http://opensource.polytechnique.org/
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21
  22 /** class for describing flags
  23  */
  24 class flagset {
  25   /** string that holds the flagset */
  26   var $value;
  27
  28   /** the boundary between flags */
  29   var $sep = ",";
  30
  31
  32   /** set flag
  33    * @param $flags services FROM coupures
  34    * @return VOID
  35    */
  36   function flagset( $flags="" ) {
  37     $this->value = $flags;
  38   }
  39
  40
  41   /** add flag
  42    * @param $flag XXX
  43    * @return VOID
  44    */
  45   function addflag($flag) {
  46     if (!$flag) return;
  47     if (!$this->hasflag($flag)) {
  48       if ($this->value)
  49         $this->value .= $this->sep;
  50       $this->value .= $flag;
  51     }
  52   }
  53
  54
  55   /** return all active flags
  56    * @return array
  57    */
  58
  59   function as_array()
  60   {
  61     if ($this->value) {
  62       $arr = explode($this->sep, $this->value);
  63     } else {
  64       $arr = array();
  65     }
  66     return $arr;
  67   }
  68
  69
  70   /** test if a flag is set
  71    * @param $flag XXX
  72    * @return 1 || 0
  73    */
  74   function hasflag($flag) {
  75     $tok = strtok($this->value,$this->sep);
  76     while ($tok) {
  77       if ($tok==$flag) return 1;
  78       $tok = strtok($this->sep);
  79     }
  80     return 0;
  81   }
  82
  83
  84   /** remove flag
  85    * @param $flag XXX
  86    * @return VOID
  87    */
  88   function rmflag($flag) {
  89     if (!$flag) return;
  90     $newvalue = "";
  91     $tok = strtok($this->value,$this->sep);
  92     while ($tok) {
  93       if ($tok!=$flag) {
  94         if ($newvalue)
  95          $newvalue .= $this->sep;
  96         $newvalue .= $tok;
  97       }
  98       $tok = strtok($this->sep);
  99     }
 100     $this->value=$newvalue;
 101   }
 102
 103 }
 104
 105 ?>