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+<?php
+/*
+** $Id$
+**
+** ITools - the Internet Tools Library
+**
+** Copyright (C) 1995-2003 by the ITools Authors.
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of either the GNU General Public License
+** or the GNU Lesser General Public License, as published by the Free
+** Software Foundation. See http://www.gnu.org/licenses/ for details.
+**
+** Class it_Browser: Browser capability class
+** For a good list see http://www.msb.edu/dept/msbtc/waehner/browser/
+**
+** Inspired by browser.pinc,v 1.1.1.1 1999/03/23 14:51:39 bobak Exp
+*/
+
+/**
+ * Browser capabilities class
+ * var $Type string: Browser type, "Netscape", "MSIE", "Konqueror" etc.
+ * var $Version float: Browser-Version x.y for all brands
+ * var $Platform string: "Win95", "Macintosh", "Linux" ... may be wrong
+ * var $Language string: Browser's language, "de", "en", ... or unset
+ * var $HTMLVersion float: Suported HTML version x.y
+ * var $JavaScript bool: Browser supports Javascript
+ * var $CSS bool: Browser supports Style sheets
+ * var $TextOnly bool: Browser supports only text, no graphics
+ */
+class it_browser
+{
+ /* Generic attributes */
+ var $UserAgent; /* string: Unparsed HTTP_USER_AGENT */
+ var $Type = ''; /* string: Browser type, "Netscape", "MSIE", etc. */
+ var $Version; /* float: Browser-Version x.y for all brands */
+ var $Platform; /* string: "Win95", "Macintosh", "Linux" ... may be wrong */
+ var $Language; /* string: Browser's language, "de", "en", ... or unset */
+ var $HTMLVersion=0; /* float: Suported HTML version x.y */
+ var $JavaScript=0; /* bool: Browser supports Javascript */
+ var $CSS=1; /* int: Style sheet level (0..3) */
+ var $TextOnly=0; /* bool: Browser supports only text, no graphics */
+
+ /* Browser specific stuff (DEPRECATED, use generic attributes above) */
+ var $MSIE; /* float: Microsoft Internet Explorer Version or 0 */
+ var $NS; /* float: Netscape Navigator Version or 0 */
+
+/**
+ * Constructor: Initializes public fields with browser capabilities
+ */
+function it_browser()
+{
+ $this->UserAgent = $_SERVER['HTTP_USER_AGENT'];
+ /* $this->UserAgent = "Mozilla/4.0 [de] (compatible; MSIE 5.0; Bill Gates 1.0; Windows 95)"; */
+
+ /* Find "Mozilla/4.0" */
+ if (ereg("([^/]*)/([^ ]*)", $this->UserAgent, $regs))
+ {
+ $this->Type = $regs[1];
+ $this->Version = (double)$regs[2];
+ }
+
+ /* Find optional "(compatible; MSIE 3.0; Win95)" */
+ if (ereg("\((.*)\)", $this->UserAgent, $regs))
+ {
+ $optattr = split("; ", $regs[1]);
+ if ($optattr[0] == "compatible")
+ {
+ if (ereg("([^/]*)[/ ]([^/]*)", $optattr[1], $regs))
+ {
+ $this->Type = $regs[1];
+ $this->Version = (double)$regs[2];
+ }
+ else $this->Type = $optattr[1];
+ $this->Platform = $optattr[count($optattr)-1];
+ }
+ else
+ $this->Platform = $optattr[0];
+ }
+
+ if ($this->Type == "Mozilla")
+ $this->Type = "Netscape";
+
+ /* Find optional "[de]" */
+ if (ereg("\[(.*)\]", $this->UserAgent, $regs))
+ $this->Language = $regs[1];
+
+ /* And now for the browser capabilities ... */
+ if ($this->Type == "MSIE")
+ {
+ $this->MSIE = $this->Version;
+ $this->HTMLVersion = 4.0;
+ $this->JavaScript = 1;
+
+ if ($this->Version >= 4.0)
+ $this->CSS = 2;
+ }
+ else if ($this->Type == "Opera")
+ {
+ $this->Opera = $this->Version;
+ if ($this->Version >= 3.5)
+ $this->HTMLVersion = 4.0;
+ else
+ $this->HTMLVersion = 3.2;
+ $this->JavaScript = 1;
+ }
+ else if ($this->Type == "Konqueror")
+ {
+ $this->HTMLVersion = 4.0;
+ $this->CSS = 2;
+ $this->JavaScript = 1;
+ }
+ else if ($this->Type == "Netscape")
+ {
+ $this->NS = $this->Version;
+ $this->HTMLVersion = 4.0;
+ $this->JavaScript = 1;
+
+ if ($this->Version >= 5.0)
+ $this->CSS = 2;
+ }
+ else if ($this->Type == "Lynx")
+ $this->TextOnly = 1;
+}
+
+} /* End Class it_Browser */
+?>