2 var DataReader = require('./dataReader');
4 function Uint8ArrayReader(data) {
7 this.length = this.data.length;
11 Uint8ArrayReader.prototype = new DataReader();
13 * @see DataReader.byteAt
15 Uint8ArrayReader.prototype.byteAt = function(i) {
19 * @see DataReader.lastIndexOfSignature
21 Uint8ArrayReader.prototype.lastIndexOfSignature = function(sig) {
22 var sig0 = sig.charCodeAt(0),
23 sig1 = sig.charCodeAt(1),
24 sig2 = sig.charCodeAt(2),
25 sig3 = sig.charCodeAt(3);
26 for (var i = this.length - 4; i >= 0; --i) {
27 if (this.data[i] === sig0 && this.data[i + 1] === sig1 && this.data[i + 2] === sig2 && this.data[i + 3] === sig3) {
35 * @see DataReader.readData
37 Uint8ArrayReader.prototype.readData = function(size) {
38 this.checkOffset(size);
40 // in IE10, when using subarray(idx, idx), we get the array [0x00] instead of [].
41 return new Uint8Array(0);
43 var result = this.data.subarray(this.index, this.index + size);
47 module.exports = Uint8ArrayReader;