RE: [xsl] XSL support detection

["James Fuller" <james dot fuller at o-idev dot com>]

> My application supports server-side xslt or client-side.
> The browser can access .html or .xml.
>
> However, I would like the front-page to somehow check for xslt
> and redirect
> the browser to the right location.

you will need to find an external solution to this problem, in other words
use one of the many fine javascript browser sniffers that are out
there.....this is really not the forum for javascript questions...ah heck
its a sunday.


> However, after much banging of my head against the wall, I
> finally realized
> that it doesn't matter a damn what content-type the webserver says it is,
> IE6 _will not_ apply xslt unless the file is called *.xml!

hmmmm, this is because your server httpd.conf file ( e.g. in apache ) is set
to apply the correct mime type to files that have .xml ending....there is
nothing stopping you adjusting this...well you will need server access.

> So, an alternative is to call the index .xml, but have the content-type be
> xhtml. However, this would simply die on older browsers! This defeats the
> whole point of the detection.

I have included a rather popular javascript sniffer program...there are many
out there; basically you will have your js in an external file, and
reference it using <script src="pathtofile/sniffer.js" type="javascript"/>
then I use seomthing like the following in my index.xml file

<script language="JavaScript">
<![CDATA[
function redirect(){
if(is_mac==true ){document.location.href='main_ie.xml';}
else if(is_ie4up==true){document.location.href='main_ie.xml';}
else if(is_ie4==true){document.location.href='main_ie.xml';}
else if(is_aol5==true){document.location.href='main_ie.xml';}
else if(is_nav6up==true){document.location.href='main_nn.xml';}
else if(is_gecko==true){document.location.href='main_nn.xml';}
else if(is_nav4==true){document.location.href='main_nn.xml';}
}
]]>
</script>

where a switch is made to the correct xml file based upon browser.


gl, jim fuller




snip below line and save as sniffer.js and include
----------------------------------------------------------------------------
----------------

// Ultimate client-side JavaScript client sniff. Version 3.02

// (C) Netscape Communications 1999-2001.  Permission granted to reuse and
distribute.

// Revised 17 May 99 to add is_nav5up and is_ie5up (see below).

// Revised 20 Dec 00 to add is_gecko and change is_nav5up to is_nav6up

//                      also added support for IE5.5 Opera4&5 HotJava3 AOLTV

// Revised 22 Feb 01 to correct Javascript Detection for IE 5.x, Opera 4,

//                      correct Opera 5 detection

//                      add support for winME and win2k

//                      synch with browser-type-oo.js

// Revised 26 Mar 01 to correct Opera detection



// Everything you always wanted to know about your JavaScript client

// but were afraid to ask. Creates "is_" variables indicating:

// (1) browser vendor:

//     is_nav, is_ie, is_opera, is_hotjava, is_webtv, is_TVNavigator,
is_AOLTV

// (2) browser version number:

//     is_major (integer indicating major version number: 2, 3, 4 ...)

//     is_minor (float   indicating full  version number: 2.02, 3.01, 4.04
...)

// (3) browser vendor AND major version number

//     is_nav2, is_nav3, is_nav4, is_nav4up, is_nav6, is_nav6up, is_gecko,
is_ie3,

//     is_ie4, is_ie4up, is_ie5, is_ie5up, is_ie5_5, is_ie5_5up,
is_hotjava3, is_hotjava3up,

//     is_opera2, is_opera3, is_opera4, is_opera5, is_opera5up

// (4) JavaScript version number:

//     is_js (float indicating full JavaScript version number: 1, 1.1, 1.2
...)

// (5) OS platform and version:

//     is_win, is_win16, is_win32, is_win31, is_win95, is_winnt, is_win98,
is_winme, is_win2k

//     is_os2

//     is_mac, is_mac68k, is_macppc

//     is_unix

//     is_sun, is_sun4, is_sun5, is_suni86

//     is_irix, is_irix5, is_irix6

//     is_hpux, is_hpux9, is_hpux10

//     is_aix, is_aix1, is_aix2, is_aix3, is_aix4

//     is_linux, is_sco, is_unixware, is_mpras, is_reliant

//     is_dec, is_sinix, is_freebsd, is_bsd

//     is_vms

//

// See http://www.it97.de/JavaScript/JS_tutorial/bstat/navobj.html and

// http://www.it97.de/JavaScript/JS_tutorial/bstat/Browseraol.html

// for detailed lists of userAgent strings.

//

// Note: you don't want your Nav4 or IE4 code to "turn off" or

// stop working when new versions of browsers are released, so

// in conditional code forks, use is_ie5up ("IE 5.0 or greater")

// is_opera5up ("Opera 5.0 or greater") instead of is_ie5 or is_opera5

// to check version in code which you want to work on future

// versions.



    // convert all characters to lowercase to simplify testing

    var agt=navigator.userAgent.toLowerCase();



    // *** BROWSER VERSION ***

    // Note: On IE5, these return 4, so use is_ie5up to detect IE5.

    var is_major = parseInt(navigator.appVersion);

    var is_minor = parseFloat(navigator.appVersion);



    // Note: Opera and WebTV spoof Navigator.  We do strict client
detection.

    // If you want to allow spoofing, take out the tests for opera and
webtv.

    var is_nav  = ((agt.indexOf('mozilla')!=-1) &&
(agt.indexOf('spoofer')==-1)

                && (agt.indexOf('compatible') == -1) &&
(agt.indexOf('opera')==-1)

                && (agt.indexOf('webtv')==-1) &&
(agt.indexOf('hotjava')==-1));

    var is_nav2 = (is_nav && (is_major == 2));

    var is_nav3 = (is_nav && (is_major == 3));

    var is_nav4 = (is_nav && (is_major == 4));

    var is_nav4up = (is_nav && (is_major >= 4));

    var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||

                          (agt.indexOf("; nav") != -1)) );

    var is_nav6 = (is_nav && (is_major == 5));

    var is_nav6up = (is_nav && (is_major >= 5));

    var is_gecko = (agt.indexOf('gecko') != -1);





    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera")
== -1));

    var is_ie3    = (is_ie && (is_major < 4));

    var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie
5")==-1) );

    var is_ie4up  = (is_ie && (is_major >= 4));

    var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie
5.0")!=-1) );

    var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5")
!=-1));

    var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);

    var is_ie5_5up =(is_ie && !is_ie3 && !is_ie4 && !is_ie5);



    // KNOWN BUG: On AOL4, returns false if IE3 is embedded browser

    // or if this is the first browser window opened.  Thus the

    // variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.

    var is_aol   = (agt.indexOf("aol") != -1);

    var is_aol3  = (is_aol && is_ie3);

    var is_aol4  = (is_aol && is_ie4);

    var is_aol5  = (agt.indexOf("aol 5") != -1);

    var is_aol6  = (agt.indexOf("aol 6") != -1);



    var is_opera = (agt.indexOf("opera") != -1);

    var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2")
!= -1);

    var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3")
!= -1);

    var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4")
!= -1);

    var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5")
!= -1);

    var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);



    var is_webtv = (agt.indexOf("webtv") != -1);



    var is_TVNavigator = ((agt.indexOf("navio") != -1) ||
(agt.indexOf("navio_aoltv") != -1));

    var is_AOLTV = is_TVNavigator;



    var is_hotjava = (agt.indexOf("hotjava") != -1);

    var is_hotjava3 = (is_hotjava && (is_major == 3));

    var is_hotjava3up = (is_hotjava && (is_major >= 3));



    // *** JAVASCRIPT VERSION CHECK ***

    var is_js;

    if (is_nav2 || is_ie3) is_js = 1.0;

    else if (is_nav3) is_js = 1.1;

    else if (is_opera5up) is_js = 1.3;

    else if (is_opera) is_js = 1.1;

    else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;

    else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;

    else if (is_hotjava3up) is_js = 1.4;

    else if (is_nav6 || is_gecko) is_js = 1.5;

    // NOTE: In the future, update this code when newer versions of JS

    // are released. For now, we try to provide some upward compatibility

    // so that future versions of Nav and IE will show they are at

    // *least* JS 1.x capable. Always check for JS version compatibility

    // with > or >=.

    else if (is_nav6up) is_js = 1.5;

    // NOTE: ie5up on mac is 1.4

    else if (is_ie5up) is_js = 1.3



    // HACK: no idea for other browsers; always check for JS version with >
or >=

    else is_js = 0.0;



    // *** PLATFORM ***

    var is_win   = ( (agt.indexOf("win")!=-1) ||
(agt.indexOf("16bit")!=-1) );

    // NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on
all

    //        Win32, so you can't distinguish between Win95 and WinNT.

    var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows
95")!=-1));



    // is this a 16 bit compiled version?

    var is_win16 = ((agt.indexOf("win16")!=-1) ||

               (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows
3.1")!=-1) ||

               (agt.indexOf("windows 16-bit")!=-1) );



    var is_win31 = ((agt.indexOf("windows 3.1")!=-1) ||
(agt.indexOf("win16")!=-1) ||

                    (agt.indexOf("windows 16-bit")!=-1));



    var is_winme = ((agt.indexOf("win 9x 4.90")!=-1));

    var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1));



    // NOTE: Reliable detection of Win98 may not be possible. It appears
that:

    //       - On Nav 4.x and before you'll get plain "Windows" in
userAgent.

    //       - On Mercury client, the 32-bit version will return "Win98",
but

    //         the 16-bit version running on Win98 will still return
"Win95".

    var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows
98")!=-1));

    var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows
nt")!=-1));

    var is_win32 = (is_win95 || is_winnt || is_win98 ||

                    ((is_major >= 4) && (navigator.platform == "Win32")) ||

                    (agt.indexOf("win32")!=-1) ||
(agt.indexOf("32bit")!=-1));



    var is_os2   = ((agt.indexOf("os/2")!=-1) ||

                    (navigator.appVersion.indexOf("OS/2")!=-1) ||

                    (agt.indexOf("ibm-webexplorer")!=-1));



    var is_mac    = (agt.indexOf("mac")!=-1);

    // hack ie5 js version for mac

    if (is_mac && is_ie5up) is_js = 1.4;

    var is_mac68k = (is_mac && ((agt.indexOf("68k")!=-1) ||

                               (agt.indexOf("68000")!=-1)));

    var is_macppc = (is_mac && ((agt.indexOf("ppc")!=-1) ||

                                (agt.indexOf("powerpc")!=-1)));



    var is_sun   = (agt.indexOf("sunos")!=-1);

    var is_sun4  = (agt.indexOf("sunos 4")!=-1);

    var is_sun5  = (agt.indexOf("sunos 5")!=-1);

    var is_suni86= (is_sun && (agt.indexOf("i86")!=-1));

    var is_irix  = (agt.indexOf("irix") !=-1);    // SGI

    var is_irix5 = (agt.indexOf("irix 5") !=-1);

    var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6")
!=-1));

    var is_hpux  = (agt.indexOf("hp-ux")!=-1);

    var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1));

    var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1));

    var is_aix   = (agt.indexOf("aix") !=-1);      // IBM

    var is_aix1  = (agt.indexOf("aix 1") !=-1);

    var is_aix2  = (agt.indexOf("aix 2") !=-1);

    var is_aix3  = (agt.indexOf("aix 3") !=-1);

    var is_aix4  = (agt.indexOf("aix 4") !=-1);

    var is_linux = (agt.indexOf("inux")!=-1);

    var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);

    var is_unixware = (agt.indexOf("unix_system_v")!=-1);

    var is_mpras    = (agt.indexOf("ncr")!=-1);

    var is_reliant  = (agt.indexOf("reliantunix")!=-1);

    var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) ||

           (agt.indexOf("dec_alpha")!=-1) ||
(agt.indexOf("alphaserver")!=-1) ||

           (agt.indexOf("ultrix")!=-1) ||
(agt.indexOf("alphastation")!=-1));

    var is_sinix = (agt.indexOf("sinix")!=-1);

    var is_freebsd = (agt.indexOf("freebsd")!=-1);

    var is_bsd = (agt.indexOf("bsd")!=-1);

    var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux
||

                 is_sco ||is_unixware || is_mpras || is_reliant ||

                 is_dec || is_sinix || is_aix || is_linux || is_bsd ||
is_freebsd);



    var is_vms   = ((agt.indexOf("vax")!=-1) ||
(agt.indexOf("openvms")!=-1));





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