<?php
  /**************************************************************************\
  * phpGroupWare API - Browser detect functions                              *
  * This file written by Miles Lott <milosch@phpgroupware.org>               *
  * Majority of code borrowed from Sourceforge 2.5                           *
  * Copyright 1999-2000 (c) The SourceForge Crew - http://sourceforge.net    *
  * Browser detection functions for phpGroupWare developers                  *
  * -------------------------------------------------------------------------*
  * This library is part of the phpGroupWare API                             *
  * http://www.phpgroupware.org/api                                          * 
  * ------------------------------------------------------------------------ *
  * This library is free software; you can redistribute it and/or modify it  *
  * under the terms of the GNU Lesser General Public License as published by *
  * the Free Software Foundation; either version 2.1 of the License,         *
  * or any later version.                                                    *
  * This library 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 Lesser General Public License for more details.              *
  * You should have received a copy of the GNU Lesser General Public License *
  * along with this library; if not, write to the Free Software Foundation,  *
  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA            *
  \**************************************************************************/

  /* $Id$ */

	class browser
	{
		var $BROWSER_AGENT;
		var $BROWSER_VER;
		var $BROWSER_PLATFORM;

		function browser ()
		{
			global $HTTP_USER_AGENT,$log_version;
			/*
				Determine browser and version
			*/
			if (ereg( 'MSIE ([0-9].[0-9]{1,2})',$HTTP_USER_AGENT,$log_version))
			{
				$this->BROWSER_VER=$log_version[1];
				$this->BROWSER_AGENT='IE';
			}
			elseif (ereg( 'Opera ([0-9].[0-9]{1,2})',$HTTP_USER_AGENT,$log_version))
			{
				$this->BROWSER_VER=$log_version[1];
				$this->BROWSER_AGENT='OPERA';
			}
			elseif (ereg( 'Mozilla/([0-9].[0-9]{1,2})',$HTTP_USER_AGENT,$log_version))
			{
				$this->BROWSER_VER=$log_version[1];
				$this->BROWSER_AGENT='MOZILLA';
			}
			else
			{
				$this->BROWSER_VER=0;
				$this->BROWSER_AGENT='OTHER';
			}

			/*
				Determine platform
			*/
			if (strstr($HTTP_USER_AGENT,'Win'))
			{
				$this->BROWSER_PLATFORM='Win';
			}
			else if (strstr($HTTP_USER_AGENT,'Mac'))
			{
				$this->BROWSER_PLATFORM='Mac';
			}
			else if (strstr($HTTP_USER_AGENT,'Linux'))
			{
				$this->BROWSER_PLATFORM='Linux';
			}
			else if (strstr($HTTP_USER_AGENT,'Unix'))
			{
				$this->BROWSER_PLATFORM='Unix';
			}
			else if (strstr($HTTP_USER_AGENT,'Beos'))
			{
				$this->BROWSER_PLATFORM='Beos';
			}
			else
			{
				$this->BROWSER_PLATFORM='Other';
			}

			/*
			echo "\n\nAgent: $HTTP_USER_AGENT";
			echo "\nIE: ".browser_is_ie();
			echo "\nMac: ".browser_is_mac();
			echo "\nWindows: ".browser_is_windows();
			echo "\nPlatform: ".browser_get_platform();
			echo "\nVersion: ".browser_get_version();
			echo "\nAgent: ".browser_get_agent();
			*/
		}

		function get_agent ()
		{
			return $this->BROWSER_AGENT;
		}

		function get_version()
		{
			return $this->BROWSER_VER;
		}

		function get_platform()
		{
			return $this->BROWSER_PLATFORM;
		}

		function is_linux()
		{
			if ($this->get_platform()=='Linux')
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		function is_unix()
		{
			if ($this->get_platform()=='Unix')
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		function is_beos()
		{
			if ($this->get_platform()=='Beos')
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		function is_mac()
		{
			if ($this->get_platform()=='Mac')
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		function is_windows()
		{
			if ($this->get_platform()=='Win')
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		function is_ie()
		{
			if ($this->get_agent()=='IE')
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		function is_netscape()
		{
			if ($this->get_agent()=='MOZILLA')
			{
				return true;
			}
			else
			{
				return false;
			}
		}
	}
?>