Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- function base64_decode(data){
- var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
- var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,ac = 0,dec = "",tmp_arr = [];
- if (!data) { return data; }
- data += '';
- do {
- h1 = b64.indexOf(data.charAt(i++));
- h2 = b64.indexOf(data.charAt(i++));
- h3 = b64.indexOf(data.charAt(i++));
- h4 = b64.indexOf(data.charAt(i++));
- bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;
- o1 = bits >> 16 & 0xff;
- o2 = bits >> 8 & 0xff;
- o3 = bits & 0xff;
- if (h3 == 64) {
- tmp_arr[ac++] = String.fromCharCode(o1);
- } else if (h4 == 64) {
- tmp_arr[ac++] = String.fromCharCode(o1, o2);
- } else {
- tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
- }
- } while (i < data.length);
- dec = tmp_arr.join('');
- dec = utf8_decode(dec);
- return dec;
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement