--- /dev/null
+<?php
+/*
+ * Copyright (C) 2003-2004 Polytechnique.org
+ * http://opensource.polytechnique.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/** class for describing flags
+ */
+class flagset {
+ /** string that holds the flagset */
+ var $value;
+
+ /** the boundary between flags */
+ var $sep = ",";
+
+
+ /** set flag
+ * @param $flags services FROM coupures
+ * @return VOID
+ */
+ function flagset( $flags="" ) {
+ $this->value = $flags;
+ }
+
+
+ /** add flag
+ * @param $flag XXX
+ * @return VOID
+ */
+ function addflag($flag) {
+ if (!$flag) return;
+ if (!$this->hasflag($flag)) {
+ if ($this->value)
+ $this->value .= $this->sep;
+ $this->value .= $flag;
+ }
+ }
+
+
+ /** test si flag ou pas
+ * @param $flag XXX
+ * @return 1 || 0
+ */
+ function hasflag($flag) {
+ $tok = strtok($this->value,$this->sep);
+ while ($tok) {
+ if ($tok==$flag) return 1;
+ $tok = strtok($this->sep);
+ }
+ return 0;
+ }
+
+
+ /** remove flag
+ * @param $flag XXX
+ * @return VOID
+ */
+ function rmflag($flag) {
+ if (!$flag) return;
+ $newvalue = "";
+ $tok = strtok($this->value,$this->sep);
+ while ($tok) {
+ if ($tok!=$flag) {
+ if ($newvalue)
+ $newvalue .= $this->sep;
+ $newvalue .= $tok;
+ }
+ $tok = strtok($this->sep);
+ }
+ $this->value=$newvalue;
+ }
+
+}
+
+?>