| 1 | <?php |
| 2 | /* |
| 3 | * Copyright (C) 2003-2010 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 PlFlagSet |
| 25 | { |
| 26 | /** string that holds the PlFlagSet */ |
| 27 | private $values = array(); |
| 28 | |
| 29 | /** the boundary between flags */ |
| 30 | private $sep; |
| 31 | |
| 32 | |
| 33 | /** set flag |
| 34 | * @param $flags services FROM coupures |
| 35 | * @return VOID |
| 36 | */ |
| 37 | public function __construct($flags = '', $sep = ',') |
| 38 | { |
| 39 | $this->sep = $sep; |
| 40 | $splitted = explode($sep, $flags); |
| 41 | foreach ($splitted as $part) { |
| 42 | $this->values[$part] = true; |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | |
| 47 | /** add flag |
| 48 | * @param $flag name of the flag |
| 49 | * @param $cond if true, add the flag (default is true), else, ignore. |
| 50 | * @return VOID |
| 51 | */ |
| 52 | public function addFlag($flag, $cond = true) |
| 53 | { |
| 54 | if (empty($flag) || !$cond) { |
| 55 | return; |
| 56 | } |
| 57 | $this->values[$flag] = true; |
| 58 | } |
| 59 | |
| 60 | |
| 61 | /** test si flag ou pas |
| 62 | * @param $flag XXX |
| 63 | * @return 1 || 0 |
| 64 | */ |
| 65 | public function hasFlag($flag) |
| 66 | { |
| 67 | return !empty($flag) && isset($this->values[$flag]) && $this->values[$flag]; |
| 68 | } |
| 69 | |
| 70 | /** test flag combination |
| 71 | */ |
| 72 | public function hasFlagCombination($flag) |
| 73 | { |
| 74 | $perms = explode(',', $flag); |
| 75 | foreach ($perms as $perm) |
| 76 | { |
| 77 | $ok = true; |
| 78 | $rights = explode(':', $perm); |
| 79 | foreach ($rights as $right) { |
| 80 | if (($right{0} == '!' && $this->hasFlag(substr($right, 1))) || !$this->hasFlag($right)) { |
| 81 | $ok = false; |
| 82 | } |
| 83 | } |
| 84 | if ($ok) { |
| 85 | return true; |
| 86 | } |
| 87 | } |
| 88 | return false; |
| 89 | } |
| 90 | |
| 91 | /** remove flag |
| 92 | * @param $flag XXX |
| 93 | * @return VOID |
| 94 | */ |
| 95 | public function rmFlag($flag) |
| 96 | { |
| 97 | if (empty($flag)) { |
| 98 | return; |
| 99 | } |
| 100 | if (isset($this->values[$flag])) { |
| 101 | unset($this->values[$flag]); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | |
| 106 | /** return the PlFlagSet |
| 107 | */ |
| 108 | public function flags() |
| 109 | { |
| 110 | $flags = ''; |
| 111 | foreach ($this->values as $key=>$value) { |
| 112 | if (!empty($flags)) { |
| 113 | $flags .= $this->sep; |
| 114 | } |
| 115 | if ($value) { |
| 116 | $flags .= $key; |
| 117 | } |
| 118 | } |
| 119 | return $flags; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
| 124 | ?> |