Ext.util.base64 (encode/decode)

[wm003]

There were so many base64 versions around but i haven't found an Ext-classed version of this so here it is

call it with

var myencodedstring = Ext.util.base64.encode("Testtext"); //returns VGVzdHRleHQ=
var mydecodedstring = Ext.util.base64.decode("VGVzdHRleHQ="); //returns Testtext 

Ext.util.base64 = {

    base64s : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",
    
    encode: function(decStr){
        if (typeof btoa === 'function') {
             return btoa(decStr);            
        }
        var base64s = this.base64s;
        var bits;
        var dual;
        var i = 0;
        var encOut = "";
        while(decStr.length >= i + 3){
            bits = (decStr.charCodeAt(i++) & 0xff) <<16 | (decStr.charCodeAt(i++) & 0xff) <<8 | decStr.charCodeAt(i++) & 0xff;
            encOut += base64s.charAt((bits & 0x00fc0000) >>18) + base64s.charAt((bits & 0x0003f000) >>12) + base64s.charAt((bits & 0x00000fc0) >> 6) + base64s.charAt((bits & 0x0000003f));
        }
        if(decStr.length -i > 0 && decStr.length -i < 3){
            dual = Boolean(decStr.length -i -1);
            bits = ((decStr.charCodeAt(i++) & 0xff) <<16) |    (dual ? (decStr.charCodeAt(i) & 0xff) <<8 : 0);
            encOut += base64s.charAt((bits & 0x00fc0000) >>18) + base64s.charAt((bits & 0x0003f000) >>12) + (dual ? base64s.charAt((bits & 0x00000fc0) >>6) : '=') + '=';
        }
        return(encOut);
    },
    
    decode: function(encStr){
        if (typeof atob === 'function') {
            return atob(encStr); 
        }
        var base64s = this.base64s;        
        var bits;
        var decOut = "";
        var i = 0;
        for(; i<encStr.length; i += 4){
            bits = (base64s.indexOf(encStr.charAt(i)) & 0xff) <<18 | (base64s.indexOf(encStr.charAt(i +1)) & 0xff) <<12 | (base64s.indexOf(encStr.charAt(i +2)) & 0xff) << 6 | base64s.indexOf(encStr.charAt(i +3)) & 0xff;
            decOut += String.fromCharCode((bits & 0xff0000) >>16, (bits & 0xff00) >>8, bits & 0xff);
        }
        if(encStr.charCodeAt(i -2) == 61){
            return(decOut.substring(0, decOut.length -2));
        }
        else if(encStr.charCodeAt(i -1) == 61){
            return(decOut.substring(0, decOut.length -1));
        }
        else {
            return(decOut);
        }
    }

}; 

[Animal]

FF has a built in function to do this as someone pointed out to me when I included base 64 encode functions in my Grid to Excel UX. See that thread for how to incorporate the native function if available.

[wm003]

FF has a built in function to do this as someone pointed out to me when I included base 64 encode functions in my Grid to Excel UX. See that thread for how to incorporate the native function if available.

ah, didn't know that...(that's why you posted it here...)..I'll check your Excel-thread again (which is quite impressive btw. it's a pity, IE6/7 do not support it)

[wm003]

FF has a built in function to do this as someone pointed out to me when I included base 64 encode functions in my Grid to Excel UX. See that thread for how to incorporate the native function if available.

Thanks, Animal. I updated the code to support that.
However, if somebody will code an own global "atob" or "btoa" function, the Ext.util.base64 will generally fail. Everybody who uses it should keep this in mind.

[gounis]

Hello,

I would like to ask which is the license for using the Ext.util.base64.

Thank you in advance.

[wm003]

Hello,

I would like to ask which is the license for using the Ext.util.base64.

Thank you in advance.

Free as in free beer and free speech

[hieu79vn]

Hi Animal
Could you tell me Where to find the base 64 encode funtion in Extjs?

Thank you

[Misiu]

Base64 is currently not included in ExtJS SDK.
But there are many ready-to-use extensions, just search forum

[aditit]

I want to use base64.encode function .But it is not present in ext-all.js When I added code for base64.encode and called it in .js . But it says , Ext.util.base64.encode is not defined. What is the solution for it.
Thanks in advance!

[wm003]

I want to use base64.encode function .But it is not present in ext-all.js When I added code for base64.encode and called it in .js . But it says , Ext.util.base64.encode is not defined. What is the solution for it.
Thanks in advance!

did you really copy the whole code from post #1? Or just the code within the encode-function? To use "Ext.util.base64.encode" you need to copy the whole code.