testing out reading pages straight from a cbz file

lib/zip.js/tests/base64.js

@@ -0,0 +1,58 @@
+/// Code can be found at: https://gist.github.com/1284012
+
+(function() {
+
+	var a64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/', a256 = {
+		indexOf : function(c) {
+			return c.charCodeAt(0);
+		},
+		charAt : String.fromCharCode
+	};
+
+	function code(s, discard, alpha, beta, w1, w2) {
+		s = String(s);
+		var b = 0, x = '', i, c, bs = 1, sb = 1, length = s.length, tmp;
+		for (i = 0; i < length || (!discard && sb > 1); i += 1) {
+			b *= w1;
+			bs *= w1;
+			if (i < length) {
+				c = alpha.indexOf(s.charAt(i));
+				if (c <= -1 || c >= w1) {
+					throw new RangeError();
+				}
+				sb *= w1;
+				b += c;
+			}
+			while (bs >= w2) {
+				bs /= w2;
+				if (sb > 1) {
+					tmp = b;
+					b %= bs;
+					x += beta.charAt((tmp - b) / bs);
+					sb /= w2;
+				}
+			}
+		}
+		return x;
+	}
+
+	if (!("btoa" in window))
+		window.btoa = function(s) {
+			s = code(s, false, a256, a64, 256, 64);
+			return s + '===='.slice((s.length % 4) || 4);
+		};
+
+	if (!("atob" in window))
+		window.atob = function(s) {
+			var i;
+			s = String(s).split('=');
+			for (i = s.length - 1; i >= 0; i -= 1) {
+				if (s[i].length % 4 === 1) {
+					throw new RangeError();
+				}
+				s[i] = code(s[i], true, a64, a256, 64, 256);
+			}
+			return s.join('');
+		};
+
+})();