Stackedit/js/lib/css_browser_selector.js

/*
CSS Browser Selector 0.6.1
Originally written by Rafael Lima (http://rafael.adm.br)
http://rafael.adm.br/css_browser_selector
License: http://creativecommons.org/licenses/by/2.5/

Co-maintained by:
https://github.com/verbatim/css_browser_selector

*/

showLog=true;
function log(m) {if ( window.console && showLog ) {console.log(m); }  }

function css_browser_selector(u)
	{
	var	uaInfo = {},
		screens = [320, 480, 640, 768, 1024, 1152, 1280, 1440, 1680, 1920, 2560],
		allScreens = screens.length,
		ua=u.toLowerCase(),
		is=function(t) { return RegExp(t,"i").test(ua);  },
		version = function(p,n) 
			{ 
			n=n.replace(".","_"); var i = n.indexOf('_'),  ver=""; 
			while (i>0) {ver += " "+ p+n.substring(0,i);i = n.indexOf('_', i+1);} 
			ver += " "+p+n; return ver; 
			},
		g='gecko',
		w='webkit',
		c='chrome',
		f='firefox',
		s='safari',
		o='opera',
		m='mobile',
		a='android',
		bb='blackberry',
		lang='lang_',
		dv='device_',
		html=document.documentElement,
		b=	[
		
			// browser
			(!(/opera|webtv/i.test(ua))&&/msie\s(\d+)/.test(ua))?('ie ie'+(/trident\/4\.0/.test(ua) ? '8' : RegExp.$1))
			:is('firefox/')?g+ " " + f+(/firefox\/((\d+)(\.(\d+))(\.\d+)*)/.test(ua)?' '+f+RegExp.$2 + ' '+f+RegExp.$2+"_"+RegExp.$4:'')	
			:is('gecko/')?g
			:is('opera')?o+(/version\/((\d+)(\.(\d+))(\.\d+)*)/.test(ua)?' '+o+RegExp.$2 + ' '+o+RegExp.$2+"_"+RegExp.$4 : (/opera(\s|\/)(\d+)\.(\d+)/.test(ua)?' '+o+RegExp.$2+" "+o+RegExp.$2+"_"+RegExp.$3:''))
			:is('konqueror')?'konqueror'
	
			:is('blackberry') ? 
				( bb + 
					( /Version\/(\d+)(\.(\d+)+)/i.test(ua)
						? " " + bb+ RegExp.$1 + " "+bb+ RegExp.$1+RegExp.$2.replace('.','_')
						: (/Blackberry ?(([0-9]+)([a-z]?))[\/|;]/gi.test(ua) 
							? ' ' +bb+RegExp.$2 + (RegExp.$3?' ' +bb+RegExp.$2+RegExp.$3:'')
							: '')
					)
				) // blackberry
	
			:is('android') ? 
				(  a +
					( /Version\/(\d+)(\.(\d+))+/i.test(ua)
						? " " + a+ RegExp.$1 + " "+a+ RegExp.$1+RegExp.$2.replace('.','_')
						: '')
					+ (/Android (.+); (.+) Build/i.test(ua)
						? ' '+dv+( (RegExp.$2).replace(/ /g,"_") ).replace(/-/g,"_")
						:''	)
				) //android
	
			:is('chrome')?w+   ' '+c+(/chrome\/((\d+)(\.(\d+))(\.\d+)*)/.test(ua)?' '+c+RegExp.$2 +((RegExp.$4>0) ? ' '+c+RegExp.$2+"_"+RegExp.$4:''):'')	
			
			:is('iron')?w+' iron'
			
			:is('applewebkit/') ? 
				( w+ ' '+ s + 
					( /version\/((\d+)(\.(\d+))(\.\d+)*)/.test(ua)
						?  ' '+ s +RegExp.$2 + " "+s+ RegExp.$2+RegExp.$3.replace('.','_')
						:  ( / Safari\/(\d+)/i.test(ua) 
							? 
							( (RegExp.$1=="419" || RegExp.$1=="417" || RegExp.$1=="416" || RegExp.$1=="412" ) ? ' '+ s + '2_0' 
								: RegExp.$1=="312" ? ' '+ s + '1_3'
								: RegExp.$1=="125" ? ' '+ s + '1_2'
								: RegExp.$1=="85" ? ' '+ s + '1_0'
								: '' )
							:'')
						)
				) //applewebkit	
		
			:is('mozilla/')?g
			:''
			
			// mobile
			,is("android|mobi|mobile|j2me|iphone|ipod|ipad|blackberry|playbook|kindle|silk")?m:''
			
			// os/platform
			,is('j2me')?'j2me'
			:is('ipad|ipod|iphone')?  
				( 
					(
						/CPU( iPhone)? OS (\d+[_|\.]\d+([_|\.]\d+)*)/i.test(ua)  ?
						'ios' + version('ios',RegExp.$2) : ''
					) + ' ' + ( /(ip(ad|od|hone))/gi.test(ua) ?	RegExp.$1 : "" )
				) //'iphone'
			//:is('ipod')?'ipod'
			//:is('ipad')?'ipad'
			:is('playbook')?'playbook'
			:is('kindle|silk')?'kindle'
			:is('playbook')?'playbook'
			:is('mac')?'mac'+ (/mac os x ((\d+)[.|_](\d+))/.test(ua) ?    ( ' mac' + (RegExp.$2)  +  ' mac' + (RegExp.$1).replace('.',"_")  )     : '' )
			:is('win')?'win'+
					(is('windows nt 6.2')?' win8'
					:is('windows nt 6.1')?' win7'
					:is('windows nt 6.0')?' vista'
					:is('windows nt 5.2') || is('windows nt 5.1') ? ' win_xp' 
					:is('windows nt 5.0')?' win_2k'
					:is('windows nt 4.0') || is('WinNT4.0') ?' win_nt'
					: ''
					) 
			:is('freebsd')?'freebsd'
			:(is('x11|linux'))?'linux'
			:''
			
			// user agent language
			,(/[; |\[](([a-z]{2})(\-[a-z]{2})?)[)|;|\]]/i.test(ua))?(lang+RegExp.$2).replace("-","_")+(RegExp.$3!=''?(' '+lang+RegExp.$1).replace("-","_"):''):''
		
			// beta: test if running iPad app
			,( is('ipad|iphone|ipod') && !is('safari') )  ?  'ipad_app'  : ''
		
		
		]; // b

    function screenSize() 
    	{
		var w = window.outerWidth || html.clientWidth;
		var h = window.outerHeight || html.clientHeight;
		uaInfo.orientation = ((w<h) ? "portrait" : "landscape");
        // remove previous min-width, max-width, client-width, client-height, and orientation
        html.className = html.className.replace(/ ?orientation_\w+/g, "").replace(/ [min|max|cl]+[w|h]_\d+/g, "")
        for (var i=(allScreens-1);i>=0;i--) { if (w >= screens[i] ) { uaInfo.maxw = screens[i]; break; }}
		widthClasses="";
        for (var info in uaInfo) { widthClasses+=" "+info+"_"+ uaInfo[info]  };
		html.className =  ( html.className +widthClasses  );
		return widthClasses;
    	} // screenSize
	
    window.onresize = screenSize;
	screenSize();	

	var cssbs = (b.join(' ')) + " js ";
	html.className =   ( cssbs + html.className.replace(/\b(no[-|_]?)?js\b/g,"")  ).replace(/^ /, "").replace(/ +/g," ");

	return cssbs;
	}
	
css_browser_selector(navigator.userAgent);