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<?php // -*- mode:php; tab-width:4; indent-tabs-mode:t; c-basic-offset:4; -*-
#CMS - CMS Made Simple
#(c)2004-2010 by Ted Kulp (ted@cmsmadesimple.org)
#This project's homepage is: http://cmsmadesimple.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
#
#$Id: class.global.inc.php 6939 2011-03-06 00:12:54Z calguy1000 $

/**
 * @package CMS
 */

/**
 * A class for working with site preferences
 *
 * @package CMS
 * @since 1.10
 * @author Robert Campbell (calguy1000@cmsmadesimple.org)
 */
final class cms_siteprefs
{
  private static $_prefs;

  private function __construct() {}

  private static function _read()
  {
    if( is_array(self::$_prefs) ) return;
    $db = cmsms()->GetDb();

	if( !$db ) return;
    $query = 'SELECT sitepref_name,sitepref_value FROM '.cms_db_prefix().'siteprefs';
    $dbr = $db->GetArray($query);
    if( is_array($dbr) ) {
		self::$_prefs = array();
		for( $i = 0; $i < count($dbr); $i++ ) {
			$row = $dbr[$i];
			self::$_prefs[$row['sitepref_name']] = $row['sitepref_value'];
		}
	}
  }

  private static function _reset()
  {
    self::$_prefs = null;
  }

  /**
   * Retrieve a site preference
   *
   * @param string The preference name
   * @param string Optional default value
   * @return string
   */
  public static function get($key,$dflt = '')
  {
    self::_read();
    if( isset(self::$_prefs[$key]) ) 
      return self::$_prefs[$key];
    return $dflt;
  }


  /**
   * Test if a site preference exists
   *
   * @param string The preference name
   * @return boolean
   */
  public static function exists($key)
  {
    self::_read();
    if( in_array($key,array_keys(self::$_prefs)) ) {
		return TRUE;
	}
    return FALSE;
  }


  /**
   * Set a site preference
   * 
   * @param string The preference name
   * @param string The preference value
   * @return void
   */
  public static function set($key,$value)
  {
    $db = cmsms()->GetDb();
    if( !self::exists($key) )
      {
		  $query = 'INSERT INTO '.cms_db_prefix().'siteprefs (sitepref_name, sitepref_value) VALUES (?,?)';
		  $dbr = $db->Execute($query,array($key,$value));
      }
    else
      {
		  $query = 'UPDATE '.cms_db_prefix().'siteprefs SET sitepref_value = ? WHERE sitepref_name = ?';
		  $dbr = $db->Execute($query,array($value,$key));
      }
    self::$_prefs[$key] = $value;
  }


  /**
   * Remove a site preference
   *
   * @param string The preference name
   * @param boolean Wether to use preference name approximation
   * @return void
   */
  public static function remove($key,$like = FALSE)
  {
    $query = 'DELETE FROM '.cms_db_prefix().'siteprefs WHERE sitepref_name = ?';
    if( $like )
      {
	  $query = 'DELETE FROM '.cms_db_prefix().'siteprefs WHERE sitepref_name LIKE ?';
	  $key .= '%';
      }
    $db = cmsms()->GetDb();
    $db->Execute($query,array($key));
    self::_reset();
  }
}

#
# EOF
#
?>