+'use strict';
+
+var utils = require('./utils');
+
+/**
+ * An object to write any content to an Uint8Array.
+ * @constructor
+ * @param {number} length The length of the array.
+ */
+var Uint8ArrayWriter = function(length) {
+ this.data = new Uint8Array(length);
+ this.index = 0;
+};
+Uint8ArrayWriter.prototype = {
+ /**
+ * Append any content to the current array.
+ * @param {Object} input the content to add.
+ */
+ append: function(input) {
+ if (input.length !== 0) {
+ // with an empty Uint8Array, Opera fails with a "Offset larger than array size"
+ input = utils.transformTo("uint8array", input);
+ this.data.set(input, this.index);
+ this.index += input.length;
+ }
+ },
+ /**
+ * Finalize the construction an return the result.
+ * @return {Uint8Array} the generated array.
+ */
+ finalize: function() {
+ return this.data;
+ }
+};
+
+module.exports = Uint8ArrayWriter;