In an application where I make a base64 encoded Vcard , I have the problem that I can't encode special characters like in the string "Zone d'activité" , which should become "Wm9uZSBkJ2FjdGl2aXTDqQ==' (encoded by using https://base64.guru/converter/encode)
I'm using the script I found on https://openntf.org/XSnippets.nsf/snippet.xsp?id=encode-decode-base-64 , which works fine for normal text to encode.
With this encoder I get "Wm9uZSBkJ2FjdGl2aXTp" for the above string ,which isn't correct for my vcard. I guess I need to replace special characters like "'" or "é" with something else to get it encoded correctly , because base64 can only be normal characters ...?
function base64_encode (data) {
// http://kevin.vanzonneveld.net
// + original by: Tyler Akins (http://rumkin.com)
// + improved by: Bayron Guevara
// + improved by: Thunder.m
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + bugfixed by: Pellentesque Malesuada
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Rafał Kukawski (http://kukawski.pl)
// * example 1: base64_encode('Kevin van Zonneveld');
// * returns 1: 'S2V2aW4gdmFuIFpvbm5ldmVsZA=='
// mozilla has this native
// - but breaks in 2.0.0.12!
//if (typeof this.window['btoa'] == 'function') {
// return btoa(data);
//}
var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
ac = 0,
enc = "",
tmp_arr = [];
if (!data) {
return data;
}
do { // pack three octets into four hexets
o1 = data.charCodeAt(i++);
o2 = data.charCodeAt(i++);
o3 = data.charCodeAt(i++);
bits = o1 << 16 | o2 << 8 | o3;
h1 = bits >> 18 & 0x3f;
h2 = bits >> 12 & 0x3f;
h3 = bits >> 6 & 0x3f;
h4 = bits & 0x3f;
// use hexets to index into b64, and append result to encoded string
tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
} while (i < data.length);
enc = tmp_arr.join('');
var r = data.length % 3;
return (r ? enc.slice(0, r - 3) : enc) + '==='.slice(r || 3);
}
var demo = "Zone d'activité"
var test = base64_encode(demo);
return test;
I wouldn't start fiddling with the base64 encoding myself. I use code already made :-)
I have this simple code in Java:
import sun.misc.BASE64Encoder;
:
:
String txt = "xyz...";
BASE64Encoder base64encoder = new BASE64Encoder();
return base64encoder.encode(txt.getBytes());
If you really want to do it in SSJS then you can call Java classes directly. But I prefer to code such things in a Javaclass - and then you could just call that method directly if you need it in SSJS, like:
package com.myapp;
import sun.misc.BASE64Encoder;
public class Utils {
public static String base64Encode(String txt) {
BASE64Encoder base64encoder = new BASE64Encoder();
return base64encoder.encode(txt.getBytes());
}
}
And then you would call that from your SSJS like:
var txt = com.myapp.Utils.base64Encode("The text to encode...");
I haven't checked syntax of the samples - just written directly here, so you may need to correct it slightly :-)
/John