Subversion Repositories Applications.papyrus

if(!dojo._hasResource["dojox.encoding.easy64"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.

dojo._hasResource["dojox.encoding.easy64"] = true;

dojo.provide("dojox.encoding.easy64");

(function(){

	var c = function(input, length, result){

		for(var i = 0; i < length; i += 3){

			result.push(

				String.fromCharCode((input[i] >>> 2) + 33),

				String.fromCharCode(((input[i] & 3) << 4) + (input[i + 1] >>> 4) + 33),

				String.fromCharCode(((input[i + 1] & 15) << 2) + (input[i + 2] >>> 6) + 33),

				String.fromCharCode((input[i + 2] & 63) + 33)

			);

		}

	};

	dojox.encoding.easy64.encode = function(input){

		// summary: encodes input data in easy64 string

		// input: Array: an array of numbers (0-255) to encode

		var result = [], reminder = input.length % 3, length = input.length - reminder;

		c(input, length, result);

		if(reminder){

			var t = input.slice(length);

			while(t.length < 3){ t.push(0); }

			c(t, 3, result);

			for(var i = 3; i > reminder; result.pop(), --i);

		}

		return result.join("");	// String

	};

	dojox.encoding.easy64.decode = function(input){

		// summary: decodes the input string back to array of numbers

		// input: String: the input string to decode

		var n = input.length, r = [], b = [0, 0, 0, 0], i, j, d;

		for(i = 0; i < n; i += 4){

			for(j = 0; j < 4; ++j){ b[j] = input.charCodeAt(i + j) - 33; }

			d = n - i;

			for(j = d; j < 4; b[++j] = 0);

			r.push(

				(b[0] << 2) + (b[1] >>> 4),

				((b[1] & 15) << 4) + (b[2] >>> 2),

				((b[2] & 3) << 6) + b[3]

			);

			for(j = d; j < 4; ++j, r.pop());

		}

		return r;

	};

})();

}